阅读说明：本技术 一种钢板校平处理工艺 (Steel plate leveling treatment process ) 是由 谢振宇 于 2021-07-22 设计创作，主要内容包括：本发明公开了一种钢板校平处理工艺,属于钢板处理技术领域,一种钢板校平处理工艺,首先通过固定组件可将校平底板和校平压板进行固定,保证了钢板后续校平的稳定性,然后将校平机构放入到真空退火炉中,通过校平箱内部气腔中的气体随温度升高而膨胀,从而对下侧的弹性壁进行施加压力,再将作用力传到钢板上,最终完成校平,且因为气体压强的均匀性,通过弹性壁对钢板的各个部分的压力基本一致的,从而达到全面完整的校平,避免了现有校平机只是对钢板局部的塑性变形,防止了受力不均而导致的校平效果不佳的问题,同时避免目前的校平机低温校平而造成钢板局部裂缝,以及压断的风险,提高了钢板的校平效果以及合格率。(The invention discloses a steel plate leveling process, belonging to the technical field of steel plate processing, and the steel plate leveling process comprises the steps of firstly fixing a leveling flat plate and a leveling press plate through a fixing assembly to ensure the stability of subsequent leveling of a steel plate, then placing a leveling mechanism into a vacuum annealing furnace, expanding gas in an air cavity in a leveling box along with temperature rise through the leveling mechanism to apply pressure on an elastic wall at the lower side, transmitting the acting force to the steel plate to finally complete leveling, and achieving comprehensive and complete leveling because the pressure of the gas is uniform, the pressure of each part of the steel plate is basically consistent through the elastic wall, thereby avoiding the problem that the existing leveling machine only performs local plastic deformation on the steel plate, preventing the problem of poor leveling effect caused by uneven stress, and simultaneously avoiding local cracks of the steel plate caused by low-temperature leveling of the existing leveling machine, and the risk of pressure fracture improves the leveling effect and the qualification rate of the steel plate.)

1. A steel plate leveling treatment process is characterized in that: the method comprises the following steps:

s1, placing the steel plate to be leveled at the leveling position in the leveling mechanism, and fixing the leveling mechanism;

s2, filling air with 1.5-2.5 standard atmospheric pressures into the air cavity in the leveling mechanism, and sealing the air inlet after the air filling is finished;

s3, placing the whole leveling mechanism into a vacuum annealing furnace, vacuumizing the vacuum annealing furnace, and then annealing the steel plate, wherein the annealing temperature is 800-;

s4, after the heat preservation is finished, cooling the steel plate to room temperature along with the vacuum annealing furnace, discharging the steel plate out of the furnace, taking out the leveling mechanism, and taking out the steel plate in the leveling mechanism;

s5, detecting the leveled steel plate and detecting the leveling effect of the steel plate;

the leveling mechanism comprises a leveling base plate (1) and a leveling pressing plate (2), two fixing assemblies (3) are connected between the leveling base plate (1) and the leveling pressing plate (2), a first sandy backing plate (4) is fixedly connected to the upper end of the leveling base plate (1), a steel plate is placed on the first sandy backing plate (4), a leveling box (5) is fixedly connected to the lower end of the leveling pressing plate (2), a plurality of electric push rods (6) are fixedly connected to the top of an inner cavity of the leveling box (5), counterweight pressure blocks (7) are fixedly connected to the telescopic ends of the electric push rods (6), a lower pressing plate (8) is fixedly connected to the lower ends of the counterweight pressure blocks (7) together, two elastic walls (9) are fixedly connected to the bottom of the leveling box (5), the two elastic walls (9) are connected with each other, and an air cavity is formed between the two elastic walls (9), the upper side elastic wall (9) is located the lower end of a lower pressing plate (8), the lower side elastic wall (9) is located the upper end of a steel plate and is in contact with the steel plate, a gas filling pipe (14) is communicated with the left wall of the leveling box (5), the gas filling pipe (14) is communicated with a gas cavity, grooves are formed in the left side and the right side of the elastic wall (9), and a gas pressure sensor is arranged inside the gas cavity.

2. The steel sheet leveling process according to claim 1, wherein: fixed subassembly (3) are including two fixed plates (301), the upper and lower side fixed plate (301) fixed connection respectively in the side of levelling bottom plate (1) and levelling clamp plate (2), two through connection has fastening bolt (302) between fixed plate (301), fastening bolt (302)'s downside spiro union has fixation nut (303).

3. The steel sheet leveling process according to claim 1, wherein: the inner wall has seted up spout (10) about levelling case (5), spout (10) inner wall sliding connection has slider (11), the one end fixedly connected with connecting rod (12) of spout (10), both sides are kept away from in slider (11) the connecting rod (12) other end is both ends about lower pressure plate (8) fixed connection respectively.

4. The steel sheet leveling process according to claim 2, wherein: the lower end of the lower pressing plate (8) is fixedly connected with a second sandy base plate (13), and the lower end of the second sandy base plate (13) is in contact with the elastic wall (9) on the upper side.

5. The steel sheet leveling process according to claim 4, wherein: the roughness of the upper end face of the first sand cushion plate (4) and the roughness of the lower end face of the second sand cushion plate (13) are both larger than 2.5 micrometers.

6. The steel sheet leveling process according to claim 2, wherein: the upper end face of the first sandy backing plate (4) and the lower end face of the second sandy backing plate (13) are both coated with polytetrafluoroethylene materials, and the lower end face of the elastic wall (9) is also coated with polytetrafluoroethylene materials.

7. The steel sheet leveling process according to claim 1, wherein: the elastic wall (9) is made of high-toughness heat-resistant material, and the thickness of the elastic wall (9) is 4-6 mm.

8. The steel sheet leveling process according to claim 2, wherein: the fastening bolt (302) and the fixing nut (303) are made of heat-resistant steel materials, and all parts in the leveling mechanism are made of carbon steel materials.

9. The steel sheet leveling process as set forth in claim 5, wherein: the vacuum degree in the vacuum annealing furnace is not lower than 10-2 MPa.

10. The steel sheet leveling process according to claim 1, wherein: the outermost layer of the upper end surface of the first sandy backing plate (4) is also coated with a tungsten trioxide material.

Technical Field

The invention relates to the technical field of steel plate treatment, in particular to a steel plate leveling treatment process.

Background

The steel sheet is a flat steel sheet which is cast from molten steel, cooled, and pressed. The steel plate is flat and rectangular and can be directly rolled or cut by a wide steel belt. The steel plates are divided into thin steel plates with the thickness less than 4 mm, medium steel plates with the thickness of 4-60 mm and extra thick steel plates with the thickness of 60-115 mm. The steel sheet can be classified into hot rolling and cold rolling according to the rolling classification. The thin plates are classified according to steel types, such as common steel, high-quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel, industrial pure iron thin plates and the like; according to the professional application, the plate can be used for oil tanks, enamel plates, bulletproof plates and the like; coating the surface with zinc-plated sheet, tin-plated sheet, lead-plated sheet, plastic clad steel sheet, etc

At present, after a steel plate is pretreated, the steel plate needs to be leveled so as to ensure the assembly precision and simultaneously reduce the residual stress in the steel plate, and the existing leveler continuously and repeatedly bends and corrects the plate through a plurality of mutually parallel leveling rollers which are arranged in a staggered mode according to a certain pressing mode.

However, the existing roller type leveling machine requires that the length and the size of a steel plate are long enough and the steel plate must be rolled between two tension rollers, but aiming at a small steel plate with a small size, the leveling can not be performed through the existing leveling machine, and the plate surface has the defects of buckling, wave shape and the like; when the steel plate is leveled by the roller, the deformation of the steel plate is local, namely, the convex or concave part on the surface of the steel plate is forced to generate plastic deformation, and the local plastic deformation inevitably brings uneven stress and deformation on the whole, so the leveling effect of the steel plate is poor; the existing leveler is easy to cause steel plate cracks during leveling, and can seriously cause pressure fracture damage, and meanwhile, the existing leveler mainly levels a thinner steel plate and cannot play a corresponding role in a thicker steel plate. Therefore, a steel plate leveling process is proposed to solve the above problems.

Disclosure of Invention

1. Technical problem to be solved

In view of the problems in the prior art, the present invention is directed to a steel plate leveling process, the leveling mechanism can be put into the vacuum annealing furnace, and the gas in the gas cavity inside the leveling box expands along with the temperature rise so as to apply pressure to the elastic wall on the lower side, further transmits the acting force to the steel plate to finally finish leveling, has good leveling effect, basically has consistent pressure to each part of the steel plate through the elastic wall at the lower side because of the uniformity of the gas pressure, thereby achieving comprehensive and complete leveling, avoiding the problem that the prior leveling machine only performs local plastic deformation on the steel plate and preventing poor leveling effect caused by uneven stress, meanwhile, the risk problems of local cracks of the steel plate and breakage damage caused by the existing rolling low-temperature leveling are avoided, and the leveling effect of the steel plate leveling and the qualification rate of the steel plate are improved.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A steel plate leveling treatment process comprises the following steps:

s1, placing the steel plate to be leveled at the leveling position in the leveling mechanism, and fixing the leveling mechanism;

s2, filling air with 1.5-2.5 standard atmospheric pressures into the air cavity in the leveling mechanism, and sealing the air inlet after the air filling is finished;

s3, placing the whole leveling mechanism into a vacuum annealing furnace, and annealing the steel plate to be leveled, wherein the annealing temperature is 800-1000 ℃, and the heat preservation time is 90-120 min;

s4, after the heat preservation is finished, cooling the steel plate to room temperature along with the vacuum annealing furnace, discharging the steel plate out of the furnace, taking out the leveling mechanism, and taking out the steel plate in the leveling mechanism;

s5, detecting the leveled steel plate and detecting the leveling effect of the steel plate;

the leveling mechanism comprises a leveling bottom plate and a leveling pressing plate, two fixing assemblies are connected between the leveling bottom plate and the leveling pressing plate, a first sand backing plate is fixedly connected to the upper end of the leveling bottom plate, the steel plate is placed on the first sand backing plate, a leveling box is fixedly connected to the lower end of the leveling pressing plate, a plurality of electric push rods are fixedly connected to the top of an inner cavity of the leveling box, a counterweight pressure block is fixedly connected to the telescopic end of each electric push rod, a lower pressing plate is fixedly connected to the lower ends of the counterweight pressure blocks together, two elastic walls are fixedly connected to the inner wall of the leveling box, the two elastic walls are mutually connected, an air cavity is formed between the two elastic walls, the upper elastic wall is located at the lower end of the lower pressing plate, the lower elastic wall is located at the upper end of the steel plate and is in contact with the steel plate, an air adding pipe is communicated with the left wall of the leveling box, and is communicated with the air cavity, the downside the elasticity wall left and right sides all is seted up flutedly, air cavity internally mounted has baroceptor.

Further, fixed subassembly is including two fixed plates, the upper and lower side the fixed plate is fixed connection respectively in the side of levelling bottom plate and levelling clamp plate, two through connection has fastening bolt between the fixed plate, fastening bolt's downside spiro union has fixation nut, through inserting fastening bolt in the fixed plate of school flat bottom plate and levelling clamp plate, then locks through fixation nut, can fix school flat bottom plate and levelling clamp plate to fix the steel sheet, guaranteed the stability of the follow-up levelling of steel sheet.

Further, the inner wall has seted up the spout about the levelling case, spout inner wall sliding connection has the slider, the one end fixedly connected with connecting rod, both sides of spout are kept away from to the slider the connecting rod other end respectively fixed connection in both ends about the holding down plate, when the decline of counter weight pressure piece drove the holding down plate and descend, the holding down plate drove connecting rod and slider simultaneously along the spout, can improve the stability that holding down plate and counter weight pressure piece descend, improves follow-up effect of pushing down to the steel sheet.

Furthermore, a second sand base plate is fixedly connected to the lower end of the lower pressing plate, and the lower end of the second sand base plate is in contact with the elastic wall on the upper side. After contacting with the steel sheet through the second sandy backing plate, can prevent that the steel sheet from taking place the adhesion, improve the separation effect.

Furthermore, the roughness of the upper end face of the first sandy backing plate and the roughness of the lower end face of the second sandy backing plate are both larger than 2.5 micrometers, and the second sandy backing plate of the first sandy backing plate has certain roughness, so that the steel plate cannot be adhered with the steel plate in the annealing and leveling process, the steel plate is easily separated after the annealing and leveling is finished, and the yield is greatly improved.

Further, first sandy backing plate up end and second sandy backing plate lower extreme surface all scribble polytetrafluoroethylene material, downside the lower terminal surface of elastic wall also scribbles polytetrafluoroethylene material, through the non-staining nature of polytetrafluoroethylene material, can further avoid the steel sheet to take place the adhesion with first sandy backing plate and second sandy backing plate after annealing levelling treatment, further improve the effect of taking of the levelling of steel sheet.

Furthermore, the elastic wall is made of a high-toughness heat-resistant material, the thickness of the elastic thin wall is 4-6 mm, the high-toughness heat-resistant material can avoid the situation that the elastic wall is prone to cracking, the thickness of the elastic thin wall is 4-6 mm, the elastic wall can be guaranteed to be well deformed to act on the steel plate, and the plastic deformation and leveling effects of the steel plate are improved.

Furthermore, the fastening bolt and the fixing nut are made of heat-resistant steel materials, and all parts in the leveling mechanism are made of carbon steel materials. The fastening bolts and the fixing nuts are guaranteed not to be fused and damaged in the vacuum annealing furnace, and the fixing effect and the subsequent taking effect of the leveling bottom plate and the leveling pressure plate are guaranteed; all parts in the leveling mechanism are made of carbon steel materials, so that the leveling mechanism can be prevented from being melted in a vacuum annealing furnace, the melting point of the carbon steel materials is higher than the heating temperature in the vacuum annealing furnace, and the leveling stability of the steel plate can be effectively ensured.

Furthermore, the vacuum degree in the vacuum annealing furnace is not lower than 10-2 MPa, the annealing effect can be ensured by the vacuum degree in the vacuum annealing furnace, and the plastic deformation and leveling effect of the steel plate can be further ensured.

Further, a tungsten trioxide material is further coated on the outermost layer of the upper end surface of the first sandy backing plate; at ordinary times, the lower surface of steel sheet can contact with first sandy backing plate, thereby can be stained with the tungsten trioxide material on the steel sheet, the tungsten trioxide condition of steel sheet lower surface can tentatively be observed through the naked eye after the levelling finishes, tungsten trioxide is yellow, simultaneously still can shine through the ultraviolet ray, tungsten trioxide is blue under ultraviolet irradiation, it is even whether to observe on the steel sheet that tungsten trioxide distributes, can tentatively judge its levelling effect through the naked eye in proper order, can carry out preliminary screening to the steel sheet, and is simple and convenient and effective, and the labor intensity is reduced.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme can fix school flat bottom plate and levelling clamp plate through fixed subassembly to fix the steel sheet, guaranteed the stability of the follow-up levelling of steel sheet, improve its levelling effect.

(2) This scheme is through the gas in the inside air cavity of levelling box and expand along with the temperature rising, thereby exert pressure to the elastic wall of downside, and then pass on the steel sheet with the effort, finally accomplish the levelling, it is effectual to level, and because the homogeneity of gas pressure, the pressure of each part of elastic wall through the downside to the steel sheet is unanimous basically, thereby reach comprehensive complete levelling, avoided current levelling machine only to the local plastic deformation of steel sheet, the not good problem of levelling effect that has prevented the atress inequality and has leaded to.

(3) Meanwhile, the steel plate is subjected to high-temperature annealing treatment, so that the plastic deformation effect is good, the problems of local cracks of the steel plate and the risk of breakage and damage caused by low-temperature leveling of the existing leveler are solved, and the leveling effect of the steel plate and the qualification rate of the steel plate are improved.

(4) The existing leveler generally cannot level steel plates with small sizes and thin thicknesses, is high in limited degree and small in application range, avoids the problem in the scheme, is applicable to leveling most of the steel plates, meets the requirements of leveling the steel plates under different conditions, is large in application range, and reduces the use cost of various levelers.

(5) When the too big accident of air pressure in levelling incasement portion air cavity causes the elastic wall to break in this scheme, air pressure sensor detects the reduction of atmospheric pressure, make electric putter drive counter weight pressure piece decline, drive holding down plate and second sandy backing plate decline and contact the steel sheet of below, and continue to compress tightly it, can prevent the resilience of steel sheet, can be to the further levelling that carries out plastic deformation of steel sheet simultaneously, avoid resulting in the steel sheet not levelling well and producing the wastrel because of the elastic wall breaks, produce corresponding measure for coping with the accident, the qualification rate of steel sheet levelling has been improved, more be applicable to current steel sheet levelling and handle.

(6) After will levelling mechanism and steel sheet are cooled off from vacuum annealing stove and take out, observe the index of the inside baroceptor of air cavity after standing for a few minutes, if the discovery is less than the atmospheric pressure that sets up, and the atmospheric pressure is slowly reducing, electric putter can slowly drive the holding down plate and descend simultaneously, explain that the groove of elastic wall has produced and has revealed, can change the elastic wall this moment, and can know the steel sheet of levelling this moment and probably have a problem, whether further detect in focus is qualified, avoid the outflow of wastrel, avoid simultaneously not knowing to reveal the condition and follow-up continuation is used and lead to more steel sheets unqualified, excellent in use effect.

(7) In this scheme at first through the tungsten trioxide material condition of the first sandy backing plate up end of the visual observation steel sheet lower surface contact after the levelling, tungsten trioxide is yellow, still can shine through the ultraviolet ray simultaneously, tungsten trioxide is blue under the ultraviolet irradiation, can observe on the steel sheet whether tungsten trioxide distributes evenly, can tentatively judge its levelling effect through the naked eye in proper order, can tentatively divide the sieve to the steel sheet, can tentatively divide the sieve out the defective work, reduce follow-up detected quantity, labour saving and time saving.

Drawings

FIG. 1 is a schematic view of a steel sheet leveling process according to the present invention;

FIG. 2 is a schematic view of a leveling mechanism of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of the connection between the electric push rod and the lower pressing plate according to the present invention;

FIG. 5 is a schematic view of the leveling mechanism of the present invention in operation in a vacuum tempering furnace;

fig. 6 is a schematic view of the structure of the elastic wall of the present invention in operation.

The reference numbers in the figures illustrate:

1. leveling the bottom plate; 2. leveling a pressing plate; 3. a fixing assembly; 301. a fixing plate; 302. fastening a bolt; 303. fixing a nut; 4. a first sand pad; 5. leveling box; 6. an electric push rod; 7. a counterweight pressure block; 8. a lower pressing plate; 9. a resilient wall; 10. a chute; 11. a slider; 12. a connecting rod; 13. a second sand pad; 14. and (4) an air adding pipe.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection can be direct connection or indirect connection through an intermediate medium, and can be communication inside the model adapting element. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1, a steel plate leveling process includes the following steps:

s1, placing the steel plate to be leveled at the leveling position in the leveling mechanism, and fixing the leveling mechanism;

s2, filling air at 1.5 standard atmospheric pressures into the air cavity in the leveling mechanism, and sealing the air inlet after the air filling is finished;

s3, placing the whole leveling mechanism into a vacuum annealing furnace, vacuumizing the vacuum annealing furnace, wherein the vacuum degree in the vacuum annealing furnace is not lower than 10-2 MPa, the vacuum degree in the vacuum annealing furnace can ensure the annealing effect, the plastic deformation and the leveling effect of the steel plate are further ensured, and the steel plate to be leveled is annealed at the temperature of 900 ℃ for 100 min;

s4, after the heat preservation is finished, cooling the steel plate to room temperature along with the vacuum annealing furnace, discharging the steel plate out of the furnace, taking out the leveling mechanism, and taking out the steel plate in the leveling mechanism;

s5, detecting the leveled steel plate and detecting the leveling effect of the steel plate;

referring to fig. 2, the leveling mechanism includes a leveling base plate 1 and a leveling press plate 2, two fixing assemblies 3 are connected between the leveling base plate 1 and the leveling press plate 2, each fixing assembly 3 includes two fixing plates 301, the upper and lower fixing plates 301 are respectively fixedly connected to the side ends of the leveling base plate 1 and the leveling press plate 2, a fastening bolt 302 is penetratingly connected between the two fixing plates 301, a fixing nut 303 is screwed to the lower side of the fastening bolt 302, the fastening bolt 302 and the fixing nut 303 are made of heat-resistant steel material, so as to ensure that the fastening bolt 302 and the fixing nut 303 are not melted and damaged in the vacuum annealing furnace, to ensure the fixing effect and subsequent effect of the leveling base plate 1 and the leveling press plate 2, and at the same time, the fastening bolt 302 is inserted into the fixing plates 301 of the leveling base plate 1 and the leveling press plate 2 and then locked by the fixing nut 303, so as to fix the leveling base plate 1 and the leveling press plate 2, thereby fixing the steel plate and ensuring the stability of the subsequent leveling of the steel plate.

Referring to fig. 2 and 4, the upper end of the leveling base plate 1 is fixedly connected with a first sandy backing plate 4, a steel plate is placed on the first sandy backing plate 4, the lower end of the leveling pressing plate 2 is fixedly connected with a leveling box 5, the top of the inner cavity of the leveling box 5 is fixedly connected with a plurality of electric push rods 6, the telescopic ends of the electric push rods 6 are fixedly connected with counterweight pressure blocks 7, the lower ends of the counterweight pressure blocks 7 are jointly and fixedly connected with a lower pressing plate 8, the inner wall of the leveling box 5 is fixedly connected with two elastic walls 9, the elastic walls 9 are made of high-toughness heat-resistant materials, so that the situation that the elastic walls are easy to break is avoided, the thickness of the elastic walls 9 is 4-6 mm, the elastic walls 9 are guaranteed to be capable of better deforming to act on the steel plate, the plastic deformation and the leveling effect of the steel plate are improved, the two elastic walls 9 are connected with each other, an air cavity is formed between the two elastic walls 9, and the upper elastic wall 9 is positioned at the lower end of the lower pressing plate 8, downside elastic wall 9 is located the steel sheet upper end and contacts with the steel sheet, and 5 left walls of levelling case intercommunication have filler 14, and filler 14 communicates in the air cavity, the downside the recess has all been seted up to the 9 left and right sides of elastic wall, air cavity internally mounted has pressure sensor, and pressure sensor and electric putter 6 are high strength heat-resisting material and make, and each part is carbon steel material in the levelling mechanism and makes, can avoid melting in vacuum annealing furnace, and carbon steel material's melting point is greater than the heating temperature in vacuum annealing furnace, can effectively guarantee the stability of steel sheet levelling.

Referring to fig. 2 and 5, in the process of heating to the annealing temperature in the vacuum annealing furnace, the gas in the gas cavity inside the leveling box 5 expands with the temperature rise, the gas expansion in the gas cavity mainly applies pressure to the elastic wall 9 on the lower side and drives the elastic wall to bend, because the yield strength of the steel plate is greatly reduced under the action of high temperature in the annealing furnace, namely the strength of the steel plate generating plastic deformation is greatly reduced, the acting force of the gas expansion on the elastic wall 9 on the lower side is transmitted to the steel plate, so that the steel plate generates plastic deformation, as shown in fig. 5, the leveling is finally completed, the leveling effect is good, the whole steel plate is subjected to plastic deformation adjustment at high temperature, and because of the uniformity of the gas pressure, the pressure of each part of the steel plate through the elastic wall 9 on the lower side is basically consistent, and the elastic wall 9 on the lower side is in contact with the whole surface of the steel plate, the steel plate is enabled to deform uniformly, so that comprehensive and complete leveling is achieved, the problem that the existing leveling machine only performs local plastic deformation on the steel plate is avoided, and the problem that the leveling effect is poor due to uneven stress is solved. Simultaneously because this application is through carrying out high temperature annealing to the steel sheet, not only plastic deformation is effectual, still avoids present roll-in low temperature levelling and causes the local crack of steel sheet simultaneously to and press the risk problem of breaking the damage, improved the levelling effect of steel sheet levelling and the qualification rate of steel sheet. The existing leveler can not level the steel plates with smaller sizes and thinner sizes generally, the limited degree is higher, the application range is smaller, the problem is avoided simultaneously in the scheme, the leveler is applicable to leveling most of the steel plates, the requirements of leveling the steel plates under different conditions are met, and the application range is large.

Please refer to fig. 6, when the gas pressure in the air cavity inside the leveling box 5 is too high and the elastic wall 9 is broken accidentally, at this time, the counterweight pressure block 7 slides down along the inner wall of the electric push rod 6, the counterweight pressure block 7 slides down to drive the lower pressure plate 8 and the second sand cushion plate 13 to descend, the lower pressure plate 8 and the second sand cushion plate 13 descend to contact with the steel plate below, and the steel plate continues to be compressed, so as to prevent the resilience of the steel plate, further level the steel plate by plastic deformation, avoid the defect due to the fact that the steel plate is not leveled because of the broken elastic wall 9, take corresponding measures to deal with the accidental generation, improve the qualified rate of the steel plate leveling, and be more suitable for the existing steel plate leveling process.

Referring to fig. 2 and 3, the inner wall has a chute 10 about the leveling box 5, the inner wall of the chute 10 is connected with a sliding block 11 in a sliding manner, one end of the sliding block 11 far away from the chute 10 is fixedly connected with a connecting rod 12, the other ends of the connecting rods 12 on both sides are respectively fixedly connected to the left end and the right end of the lower pressing plate 8, when the counterweight pressure block 7 descends to drive the lower pressing plate 8 to descend, the lower pressing plate 8 simultaneously drives the connecting rod 12 and the sliding block 11 to descend along the chute 10, so that the descending stability of the lower pressing plate 8 and the counterweight pressure block 7 can be improved, and the subsequent pressing effect on the steel plate can be improved.

Referring to fig. 2 and 3, the lower end of the lower press plate 8 is fixedly connected with a second sandy cushion plate 13, the lower end of the second sandy cushion plate 13 contacts with the elastic wall 9 on the upper side, the roughness of the upper end surface of the first sandy cushion plate 4 and the roughness of the lower end surface of the second sandy cushion plate 13 are both larger than 2.5 microns, the first sandy cushion plate 4 and the second sandy cushion plate 13 have certain roughness, so that the steel plate cannot be adhered to the steel plate in the annealing and leveling process, the steel plate is easily separated after the annealing and leveling process is finished, and the yield is greatly improved. The up end of first sandy backing plate 4 and the 13 lower terminal surfaces of second sandy backing plate all scribble the polytetrafluoroethylene material, and the lower terminal surface of downside elastic wall 9 also scribbles the polytetrafluoroethylene material, through the non-staining nature of polytetrafluoroethylene material, can further avoid the steel sheet to take place the adhesion with first sandy backing plate 4 and second sandy backing plate 13 after annealing levelling treatment, further improve the levelling of steel sheet and get the effect of taking.

After taking out levelling mechanism and steel sheet from the cooling in the vacuum annealing stove, the index of the inside baroceptor of air cavity is observed after keeping static for a few minutes, if the discovery is less than 1.5 atmospheric pressure that set up, and the atmospheric pressure is slowly reducing, electric putter 6 can slowly drive holding down plate 8 and descend simultaneously, explain that the groove of elastic wall 9 has produced and has revealed, can change elastic wall 9 this moment, and can know the steel sheet of levelling this moment and probably have the problem, it is qualified further to focus to detect, avoid the outflow of wastrel, avoid simultaneously not knowing to reveal the condition and follow-up continuation is used and lead to more steel sheets unqualified, excellent in use effect.

The tungsten trioxide material has still been scribbled to first sandy backing plate 4 up end outermost one deck, at steel sheet plastic deformation school at ordinary times, the lower surface of steel sheet can contact with first sandy backing plate 4, thereby can be stained with the tungsten trioxide material on the steel sheet, can tentatively observe the tungsten trioxide condition of steel sheet lower surface through the naked eye after the levelling finishes, tungsten trioxide is yellow, still can shine through the ultraviolet ray simultaneously, tungsten trioxide is blue under ultraviolet irradiation, it is even whether to observe tungsten trioxide distributes on the steel sheet, can tentatively judge its levelling effect through the naked eye in proper order, can tentatively divide the sieve to the steel sheet, can tentatively divide the defective work out, reduce follow-up detected quantity, time saving and labor saving, and labor intensity is reduced.

The working principle is as follows:

when using, at first place the steel sheet of treating the levelling in the 4 upper ends of first sandy backing plate of levelling bottom plate 1, then place levelling clamp plate 2 in the steel sheet upper end, 9 lower extreme contact steel sheets of downside elastic wall, then insert fastening bolt 302 in the fixed plate 301 of levelling bottom plate 1 and levelling clamp plate 2, then lock through fixation nut 303, can fix levelling bottom plate 1 and levelling clamp plate 2, thereby fix the steel sheet, the stability of the follow-up levelling of steel sheet has been guaranteed, improve its levelling effect.

Air with 1.5 standard atmospheric pressures is filled into an air cavity in the leveling box 5 through the air filling pipe 14, the air filling pipe 14 is sealed after the air filling is finished, the sealing performance of the interior of the air cavity is guaranteed, then the whole leveling mechanism and the steel plate are placed into a vacuum annealing furnace, the vacuum annealing furnace is vacuumized, the annealing temperature is set to 900 ℃, the heat preservation time is 100 minutes, and the steel plate is annealed.

In the process of heating to the annealing temperature in the vacuum annealing furnace, the gas in the gas cavity inside the leveling box 5 expands along with the temperature rise, the gas expansion in the gas cavity mainly applies pressure to the elastic wall 9 on the lower side and drives the elastic wall 9 on the lower side to bend, because the yield strength of the steel plate can be greatly reduced under the action of high temperature in the annealing furnace, namely the strength of the steel plate generating plastic deformation can be greatly reduced, the acting force of the gas expansion on the elastic wall 9 on the lower side is transmitted to the steel plate, so that the steel plate generates plastic deformation, the leveling is finally completed, the leveling effect is good, the plastic deformation adjustment is performed on the whole steel plate at high temperature, and because of the uniformity of the gas pressure, the pressure of each part of the steel plate is basically consistent through the elastic wall 9 on the lower side, the elastic wall 9 on the lower side can be contacted with the whole surface of the steel plate, so that the deformation of the steel plate is uniform, therefore, the leveling machine can achieve comprehensive and complete leveling, avoid the problem that the existing leveling machine only performs local plastic deformation on the steel plate, and prevent poor leveling effect caused by uneven stress. Meanwhile, the steel plate is subjected to high-temperature annealing treatment, so that the plastic deformation effect is good, the risk problems of local cracks of the steel plate and press-breaking damage caused by the conventional rolling low-temperature leveling are avoided, and the leveling effect of the steel plate and the qualification rate of the steel plate are improved. The existing leveler can not level the steel plates with smaller sizes and thinner sizes generally, the limited degree is higher, the application range is smaller, the problem is avoided simultaneously in the scheme, the leveler is applicable to leveling most of the steel plates, the requirements of leveling the steel plates under different conditions are met, and the application range is large.

When the gas pressure in the air cavity inside the leveling box 5 is too high and unexpected to cause the elastic wall 9 to break along the groove, the reduction of air pressure is detected by the gas pressure sensor inside the air cavity at this moment, the counter weight pressure block 7 is driven to descend through the electric push rod 6, the counter weight pressure block 7 drives the lower pressing plate 8 and the second sandy backing plate 13 to descend, the steel plate below is descended and contacted through the lower pressing plate 8 and the second sandy backing plate 13, and continue to compress tightly the steel plate, the resilience of the steel plate can be prevented, meanwhile, the further leveling of plastic deformation can be carried out on the steel plate, the phenomenon that the steel plate is not leveled well and defective goods are generated due to the breakage of the elastic wall 9 is avoided, corresponding measures are made for the production of coping accident, the steel plate leveling rate is improved, and the method is more suitable for the existing steel plate leveling treatment.

After taking out levelling mechanism and steel sheet from the cooling in the vacuum annealing stove, the index of the inside baroceptor of air cavity is observed after keeping static for a few minutes, if the discovery is less than 1.5 atmospheric pressure that set up, and the atmospheric pressure is slowly reducing, electric putter 6 can slowly drive holding down plate 8 and descend simultaneously, explain that the groove of elastic wall 9 has produced and has revealed, can change elastic wall 9 this moment, and can know the steel sheet of levelling this moment and probably have the problem, it is qualified further to focus to detect, avoid the outflow of wastrel, avoid simultaneously not knowing to reveal the condition and follow-up continuation is used and lead to more steel sheets unqualified, excellent in use effect.

After vacuum annealing furnace cools off to room temperature, take out the back from vacuum annealing furnace with leveling mechanism, then unscrew fixation nut 303, extract fastening bolt 302, can take out the steel sheet in the leveling mechanism, detect leveling back steel sheet, at first observe the tungsten trioxide material condition of steel sheet lower surface contact first sandy backing plate 4 up end through the naked eye, tungsten trioxide is yellow, still can shine through the ultraviolet ray simultaneously, tungsten trioxide is blue under ultraviolet irradiation, can observe whether tungsten trioxide distributes evenly on the steel sheet, can tentatively judge its levelling effect through the naked eye in proper order, can carry out preliminary screening to the steel sheet, can tentatively screen out the defective work, reduce follow-up detected quantity, time saving and labor saving.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.