阅读说明：本技术 一种耐磨、高硬度的耐磨板制备工艺及含有耐磨板的刮板输送机 (Preparation process of wear-resistant and high-hardness wear-resistant plate and scraper conveyor comprising wear-resistant plate ) 是由 谢昌林 刘成 许海洋 杨杰 于 2021-09-09 设计创作，主要内容包括：本发明公开了一种耐磨、高硬度的耐磨板制备工艺及含有耐磨板的刮板输送机,包括两个机架,两个所述机架之间设有驱动轴,所述机架内设有与所述驱动轴相配合的轴承座,所述驱动轴的外表面中部设有其位于两个所述机架内设有链轮,所述链轮上设有链条,所述链条上设有若干个刮板,所述刮板靠上设有耐磨板,所述驱动轴的一端贯穿所述机架与驱动电机的输出端连接。有益效果：高碳含量有助于石墨化,促进镁吸收,从而使碳全部或大部分呈现球状石墨,增强耐磨板的耐磨效果。(The invention discloses a preparation process of a wear-resistant and high-hardness wear-resistant plate and a scraper conveyor comprising the wear-resistant plate, wherein the scraper conveyor comprises two racks, a driving shaft is arranged between the two racks, a bearing seat matched with the driving shaft is arranged in each rack, the middle part of the outer surface of the driving shaft is provided with a chain wheel which is arranged in each rack, a chain is arranged on each chain wheel, a plurality of scrapers are arranged on each chain, the wear-resistant plate is arranged on each scraper, and one end of each driving shaft penetrates through the corresponding rack and is connected with the output end of a driving motor. Has the advantages that: the high carbon content is beneficial to graphitization and promotes magnesium absorption, so that all or most of carbon is in the form of spherical graphite, and the wear-resisting effect of the wear-resisting plate is enhanced.)

1. The utility model provides a scraper conveyor who contains antifriction plate, its characterized in that, includes two frames (1), two be equipped with drive shaft (2) between frame (1), be equipped with in frame (1) with drive shaft (2) matched with bearing frame (3), the surface middle part of drive shaft (2) is equipped with it and is located two be equipped with sprocket (4) in frame (1), be equipped with chain (5) on sprocket (4), be equipped with a plurality of scraper blade (6) on chain (5), scraper blade (6) are leaned on and are equipped with antifriction plate (7), the one end of drive shaft (2) is run through frame (1) is connected with the output of driving motor (8).

2. The scraper conveyor with wear-resistant plates as claimed in claim 1, wherein a plurality of idlers are arranged in the frame (1) and are matched with the driving shaft (2), a chain wheel (4) is arranged at the end of each idler, and the chain (5) is wound on the plurality of chain wheels (4).

3. The scraper conveyor with the wear-resistant plate as claimed in claim 1, wherein the wear-resistant plate (7) is fixed to the scraper (6) in a clamping manner, the scraper (6) is provided with a clamping groove, and the wear-resistant plate (7) is provided with a clamping block.

4. A preparation process of a wear-resistant and high-hardness wear-resistant plate, which is used for the scraper conveyor based on the wear-resistant plate containing in claim 3, comprises the following steps;

preparing materials: preparing the raw material for manufacturing the wear-resisting plate, wherein the raw material contains C: 1.3% -2.0%, Al0.01-0.02%, Si: 0.6-1.0%, Zn1.8-2.5%, Mn 0.35-1.24%, Ni0.5-1.5%, Cr: 0.8% -2.2%, Sb: 0.01% -0.015%, Cu: 0.03-0.06%, P is less than or equal to 0.05%, S is less than or equal to 0.05%, Sn: 0.05% -0.15%, B: 0.01% -0.05%, Ba: 0.03% -0.07%, Mg: 0.01 to 0.05 percent of the total weight of the alloy, and the balance of Fe;

smelting raw materials: putting the raw materials for manufacturing the alloy into a medium-frequency induction furnace to be smelted into alloy liquid, controlling the temperature at 1480-1630 ℃, keeping the temperature for 1h, and then carrying out standing and slagging-off treatment;

primary smelting: slagging is carried out by using a slagging agent, bottom blowing gas is blown into smelting equipment through a furnace bottom nozzle, stirring is carried out simultaneously, the slag and the slagging agent are uniformly mixed, and the slag is removed from a pit after 5-10 min;

refining: adding a composite modifier into the molten iron, wherein the composite modifier comprises 0.1-0.15% of rare earth alloy, 0.02-0.03% of titanium, 0.1-0.15% of calcium silicon and 0.2-0.25% of aluminum, titanium is added in a titanium iron form, then heating the molten iron to 1150-1200 ℃, adding a nodulizer into a nodulizing package at the later stage of smelting, covering a layer of iron powder on the nodulizer, covering an inoculant which is 0.1% of the total weight of the molten iron on the iron powder, flushing the molten iron, performing inoculation for 15min, discharging and calming, and pouring the molten iron into a mold after 15-20min of sedation to form an abrasion-resistant plate;

sand falling and cleaning: when the wear-resisting plate is cooled to 500-600 ℃, separating the wear-resisting plate from the sand box, separating the wear-resisting plate from molding sand, removing a casting head and a riser on the wear-resisting plate, removing residual core sand, and removing bonded sand, flash burrs and oxide skin on the surface of the wear-resisting plate;

and (3) heat treatment: cooling the wear plate to room temperature, heating to 980 ℃ below 820 ℃ per hour, keeping the temperature for 2.7-3.5 hours, discharging, and quenching in water at 45-80 ℃ to 530 ℃; and returning the steel blank to an electric furnace, heating to 430-500 ℃, carrying out low-temperature tempering treatment, keeping the temperature for 5 hours, taking the steel blank out of the furnace, carrying out air cooling to obtain a steel blank, heating the steel blank in a medium-frequency induction furnace, and then carrying out hot rolling, cold rolling, ball blank forming and polishing to obtain the high-hardness wear-resisting plate.

Technical Field

The invention relates to the technical field of machinery, in particular to a preparation process of a wear-resistant and high-hardness wear-resistant plate and a scraper conveyor containing the wear-resistant plate.

Background

A conveyor which is dragged by a scraper chain and conveys bulk materials in a groove is called a scraper conveyor. The KS scraper conveyor is a bendable scraper conveyor, and adjacent middle grooves of the KS scraper conveyor can be bent in a limited degree in the horizontal plane and the vertical plane. The working face conveyor with the machine body arranged at the intersection of the working face and the haulage roadway in a 90-degree bending mode is called a corner scraper conveyor. In the current coal mining face, the scraper conveyor not only serves to convey coal and materials, but also serves as a running track of a coal mining machine, so that the scraper conveyor becomes an indispensable main device in the modern coal mining process. The scraper conveyor can keep continuous operation, and the production can be normally carried out. Otherwise, the whole coal face will be in a production stop state, so that the whole production is interrupted.

The scraper, one of the important parts of the scraper conveyor, needs to continuously bear the impact load of large coal and rock in the complex underground production environment, so the requirement on the strength of the scraper conveyor directly influences the safety and efficiency of production. However, in the actual coal mining and transporting process, the scraper is frequently required to be replaced due to the fact that the scraper is worn or even broken, and therefore the maintenance cost of production is increased.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

Aiming at the problems in the related art, the invention provides a preparation process of a wear-resistant and high-hardness wear-resistant plate and a scraper conveyor containing the wear-resistant plate, so as to overcome the technical problems in the prior related art.

Therefore, the invention adopts the following specific technical scheme:

the utility model provides a scraper conveyor who contains antifriction plate, includes two frames, two be equipped with the drive shaft between the frame, be equipped with in the frame with drive shaft matched with bearing frame, the surface middle part of drive shaft is equipped with it and is located two be equipped with the sprocket in the frame, be equipped with the chain on the sprocket, be equipped with a plurality of scraper blade on the chain, the scraper blade leans on to be equipped with the antifriction plate, the one end of drive shaft is run through the frame is connected with driving motor's output.

Preferably, a plurality of carrier rollers matched with the driving shaft are arranged in the rack, a chain wheel is arranged at the end part of each carrier roller, and the chain is wound on the plurality of chain wheels.

Preferably, the wear-resisting plate is fixedly connected with the scraper in a clamping mode, a clamping groove is formed in the scraper, and a clamping block is arranged on the wear-resisting plate.

According to another aspect of the invention, a preparation process of a wear-resistant and high-hardness wear-resistant plate is provided, which is used for a scraper conveyor containing the wear-resistant plate, and comprises the following steps;

preparing materials: preparing the raw material for manufacturing the wear-resisting plate, wherein the raw material contains C: 1.3% -2.0%, Al0.01-0.02%, Si: 0.6-1.0%, Zn1.8-2.5%, Mn 0.35-1.24%, Ni0.5-1.5%, Cr: 0.8% -2.2%, Sb: 0.01% -0.015%, Cu: 0.03-0.06%, P is less than or equal to 0.05%, S is less than or equal to 0.05%, Sn: 0.05% -0.15%, B: 0.01% -0.05%, Ba: 0.03% -0.07%, Mg: 0.01 to 0.05 percent of the total weight of the alloy, and the balance of Fe;

smelting raw materials: putting the raw materials for manufacturing the alloy into a medium-frequency induction furnace to be smelted into alloy liquid, controlling the temperature at 1480-1630 ℃, keeping the temperature for 1h, and then carrying out standing and slagging-off treatment;

primary smelting: slagging is carried out by using a slagging agent, bottom blowing gas is blown into smelting equipment through a furnace bottom nozzle, stirring is carried out simultaneously, the slag and the slagging agent are uniformly mixed, and the slag is removed from a pit after 5-10 min;

refining: adding a composite modifier into the molten iron, wherein the composite modifier comprises 0.1-0.15% of rare earth alloy, 0.02-0.03% of titanium, 0.1-0.15% of calcium silicon and 0.2-0.25% of aluminum, titanium is added in a titanium iron form, then heating the molten iron to 1150-1200 ℃, adding a nodulizer into a nodulizing package at the later stage of smelting, covering a layer of iron powder on the nodulizer, covering an inoculant which is 0.1% of the total weight of the molten iron on the iron powder, flushing the molten iron, performing inoculation for 15min, discharging and calming, and pouring the molten iron into a mold after 15-20min of sedation to form an abrasion-resistant plate;

sand falling and cleaning: when the wear-resisting plate is cooled to 500-600 ℃, separating the wear-resisting plate from the sand box, separating the wear-resisting plate from molding sand, removing a casting head and a riser on the wear-resisting plate, removing residual core sand, and removing bonded sand, flash burrs and oxide skin on the surface of the wear-resisting plate;

and (3) heat treatment: cooling the wear plate to room temperature, heating to 980 ℃ below 820 ℃ per hour, keeping the temperature for 2.7-3.5 hours, discharging, and quenching in water at 45-80 ℃ to 530 ℃; and returning the steel blank to an electric furnace, heating to 430-500 ℃, carrying out low-temperature tempering treatment, keeping the temperature for 5 hours, taking the steel blank out of the furnace, carrying out air cooling to obtain a steel blank, heating the steel blank in a medium-frequency induction furnace, and then carrying out hot rolling, cold rolling, ball blank forming and polishing to obtain the high-hardness wear-resisting plate.

The invention has the beneficial effects that:

firstly, the high carbon content is beneficial to graphitization and promotes magnesium absorption, so that all or most of carbon presents spherical graphite, and the wear-resisting effect of the wear-resisting plate is enhanced; antimony belongs to a strong pearlite forming element, so that the gamma → alpha phase transition temperature can be reduced, and the alpha → gamma transition temperature can be increased, so that the generation of pearlite can be well promoted and stabilized, the number of graphite nodules is increased, the graphite nodules are refined, and the wear-resisting effect of the wear-resisting plate is enhanced; barium can generate barium sulfide in the production process of the wear-resistant balls, and oxygen sulfur compounds of barium become core of nodular graphite crystals in high-temperature molten iron, so that the effects of increasing and refining graphite balls and improving the form and distribution of the graphite balls are achieved; the strength, hardness and corrosion resistance of the wear-resisting plate are improved under the combined action of manganese, copper and chromium; the wear-resisting plate has the advantages of improved wear resistance, easy processing, good casting performance, good air tightness and corrosion resistance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a scraper conveyor with wear plates according to an embodiment of the present invention;

FIG. 2 is a first flowchart illustrating steps of a process for manufacturing a wear-resistant, high hardness wear-resistant plate according to an embodiment of the present invention;

fig. 3 is a flow chart of the second step of the process for manufacturing a wear-resistant, high-hardness wear-resistant plate according to an embodiment of the present invention.

In the figure:

1. a frame; 2. a drive shaft; 3. a bearing seat; 4. a sprocket; 5. a chain; 6. a squeegee; 7. a wear plate; 8. the motor is driven.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the present invention, a scraper conveyor comprising wear plates is provided.

The first embodiment;

as shown in fig. 1, the scraper conveyor based on the wear-resistant plate comprises two frames 1, a driving shaft 2 is arranged between the two frames 1, a bearing seat 3 matched with the driving shaft 2 is arranged in each frame 1, a chain wheel 4 is arranged in each frame 1 and positioned in the middle of the outer surface of each driving shaft 2, a chain 5 is arranged on each chain wheel 4, a plurality of scrapers 6 are arranged on each chain 5, the wear-resistant plate 7 is arranged on each scraper 6, and one end of each driving shaft 2 penetrates through each frame 1 and is connected with an output end of a driving motor 8;

a plurality of carrier rollers matched with the driving shaft 2 are arranged in the frame 1, a chain wheel 4 is arranged at the end part of each carrier roller, and the chain 5 is wound on the plurality of chain wheels 4; the wear-resisting plate 7 with 6 joints of scraper blade are fixed, be equipped with the draw-in groove on the scraper blade 6, be equipped with the fixture block on the wear-resisting plate 7.

Example two;

as shown in fig. 1 to 3, according to an embodiment of the present invention, there is also provided a wear-resistant, high-hardness wear-resistant plate manufacturing process for a scraper conveyor based on a wear-resistant plate, including the following steps:

step S101, preparing the raw material for manufacturing the wear plate, where the raw material includes C: 1.3% -2.0%, Al0.01-0.02%, Si: 0.6-1.0%, Zn1.8-2.5%, Mn 0.35-1.24%, Ni0.5-1.5%, Cr: 0.8% -2.2%, Sb: 0.01% -0.015%, Cu: 0.03-0.06%, P is less than or equal to 0.05%, S is less than or equal to 0.05%, Sn: 0.05% -0.15%, B: 0.01% -0.05%, Ba: 0.03% -0.07%, Mg: 0.01 to 0.05 percent of the total weight of the alloy, and the balance of Fe;

step S103, putting the raw materials for manufacturing the alloy into a medium-frequency induction furnace to be smelted into alloy liquid, controlling the temperature at 1480 and 1630 ℃, keeping the temperature for 1 hour, and then carrying out standing and slagging-off treatment;

s105, slagging is carried out by using a slagging agent, bottom blowing gas is blown into smelting equipment through a bottom nozzle, stirring is carried out simultaneously, the slag and the slagging agent are mixed uniformly, and the slag is removed from a pit after 5-10 min;

step S107, adding a composite modifier into the molten iron, wherein the composite modifier comprises 0.1-0.15% of rare earth alloy, 0.02-0.03% of titanium, 0.1-0.15% of calcium silicon and 0.2-0.25% of aluminum, titanium is added in a ferrotitanium form, then heating the molten alloy to 1150-1200 ℃, adding a nodulizer into a nodulizing ladle at the later stage of smelting, covering a layer of iron powder on the nodulizer, covering an inoculant which is 0.1% of the total weight of the molten iron on the iron powder, flushing the molten iron, performing inoculation for 15min, discharging and calming, pouring the molten iron into a mold after the calming for 15-20min to form an abrasion-resistant plate,

step S109, when the wear-resistant plate is cooled to 500-600 ℃, separating the wear-resistant plate from the sand box, separating the wear-resistant plate from molding sand, removing a casting head and a riser on the wear-resistant plate, removing residual core sand, and removing bonded sand, flash burrs and oxide skin on the surface of the wear-resistant plate;

step S111, cooling the wear plate to room temperature, heating to 980 ℃ at a temperature of not higher than 80 ℃/h, keeping the temperature for 2.7-3.5h, discharging, and quenching to 530 ℃ in water at a temperature of 45-80 ℃; and returning the steel blank to an electric furnace, heating to 430-500 ℃, carrying out low-temperature tempering treatment, keeping the temperature for 5 hours, taking the steel blank out of the furnace, carrying out air cooling to obtain a steel blank, heating the steel blank in a medium-frequency induction furnace, and then carrying out hot rolling, cold rolling, ball blank forming and polishing to obtain the high-hardness wear-resisting plate.

In conclusion, by means of the technical scheme, the high carbon content is beneficial to graphitization and magnesium absorption is promoted, so that all or most of carbon presents spherical graphite, and the wear-resisting effect of the wear-resisting plate is enhanced; antimony belongs to a strong pearlite forming element, so that the gamma → alpha phase transition temperature can be reduced, and the alpha → gamma transition temperature can be increased, so that the generation of pearlite can be well promoted and stabilized, the number of graphite nodules is increased, the graphite nodules are refined, and the wear-resisting effect of the wear-resisting plate is enhanced; barium can generate barium sulfide in the production process of the wear-resistant balls, and oxygen sulfur compounds of barium become core of nodular graphite crystals in high-temperature molten iron, so that the effects of increasing and refining graphite balls and improving the form and distribution of the graphite balls are achieved; the strength, hardness and corrosion resistance of the wear-resisting plate are improved under the combined action of manganese, copper and chromium; the wear-resisting plate has the advantages of improved wear resistance, easy processing, good casting performance, good air tightness and corrosion resistance.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.