阅读说明：本技术 一种高端装备制造的冷轧钢板 (Cold-rolled steel sheet of high-end equipment manufacturing ) 是由 关杨 张宏涛 李鑫 于 2020-07-23 设计创作，主要内容包括：本发明涉及冷轧钢板技术领域,尤其涉及一种高端装备制造的冷轧钢板,包括冷轧钢板,所述冷轧钢板的竖直截面呈L型结构,所述冷轧钢板的内部嵌设有陶瓷块,所述陶瓷块内部开设有空腔,所述陶瓷块的内腔顶端面和底端面均等距安装有多个固定块。本发明中,通过冷轧钢板内部嵌设陶瓷块,陶瓷块的内腔顶部和底部等距安装有多个固定块,上下固定块之间通过连杆转动连接,冷轧钢板内部残余的应力分散给陶瓷块,当冷轧钢板承受压力时,陶瓷块内部的连杆的力循环上下分散给固定块和其他连杆,当冷轧钢板承受压力较大时,陶瓷块被压碎,陶瓷碎片嵌设在冷轧钢板内侧始终保持分散压力的状态,提高冷轧钢板的整体承载力和硬度。(The invention relates to the technical field of cold-rolled steel plates, in particular to a cold-rolled steel plate manufactured by high-end equipment, which comprises a cold-rolled steel plate, wherein the vertical section of the cold-rolled steel plate is of an L-shaped structure, a ceramic block is embedded in the cold-rolled steel plate, a cavity is formed in the ceramic block, and a plurality of fixing blocks are arranged on the top end surface and the bottom end surface of an inner cavity of the ceramic block at equal intervals. According to the invention, the ceramic block is embedded in the cold-rolled steel plate, the plurality of fixed blocks are equidistantly arranged at the top and the bottom of the inner cavity of the ceramic block, the upper fixed block and the lower fixed block are rotatably connected through the connecting rod, residual stress in the cold-rolled steel plate is dispersed to the ceramic block, when the cold-rolled steel plate bears pressure, the force of the connecting rod in the ceramic block is circularly dispersed to the fixed blocks and other connecting rods, when the cold-rolled steel plate bears pressure, the ceramic block is crushed, and ceramic fragments are embedded in the inner side of the cold-rolled steel plate to always keep a pressure-dispersed state, so that the.)

1. The cold-rolled steel sheet for manufacturing the high-end equipment comprises a cold-rolled steel sheet (1), wherein the vertical section of the cold-rolled steel sheet (1) is of an L-shaped structure, and is characterized in that a ceramic block (2) is embedded in the cold-rolled steel sheet (1), a cavity is formed in the ceramic block (2), a plurality of fixing blocks (5) are arranged on the top end face and the bottom end face of an inner cavity of the ceramic block (2) at equal intervals, a plurality of connecting rods (6) are arranged between the plurality of fixing blocks (5) which are opposite from top to bottom, and the plurality of connecting rods (6) are rotatably connected with the plurality of fixing blocks (5) through rotating shafts; the fixed block (5) is made of manganese steel, and the hardness of the manganese steel is greater than that of the cold-rolled steel plate (1); the outer surface of the ceramic block (2) is a smooth surface, and horn-shaped elastic rings (4) are arranged on two sides of the ceramic block (2); the smaller end of the elastic ring (4) is fixedly connected to the ceramic block (2) through pouring glue.

2. Cold rolled steel sheet for high-end equipment manufacture according to claim 1, characterized in that said ceramic block (2) has attached to both its vertically extending ends a flexible steel sheet (13); the flexible steel sheet (13) bends when stressed, so that the flexible steel sheet is tightly propped against the inside of the cold-rolled steel sheet (1).

3. Cold rolled steel sheet for high end equipment according to claim 2, where said flexible steel sheet (13) is arranged to be bent like a hook and bent in a counter clockwise direction.

4. The high-end equipment manufactured cold-rolled steel sheet according to claim 1, wherein the anti-torsion sleeve (3) is installed at two vertically extending ends of the cold-rolled steel sheet (1), the vertical section of the anti-torsion sleeve (3) is of an inverted U-shaped structure, the puncture needle (7) is welded at the center position of the inner horizontal end of the anti-torsion sleeve (3), the bottom end of the puncture needle (7) is rotatably connected with two first steel bars (8) through a rotating shaft, the anti-torsion grooves (9) of the inverted T-shaped structure are formed at the horizontally and vertically extending ends of the cold-rolled steel sheet (1), and the anti-torsion grooves (9) are matched with the first steel bars (8) for use.

5. Cold rolled steel sheet for high end equipment according to claim 4, wherein said anti-kink bush (3) is provided with a first fixing groove (10) on the inside of its vertical end for fitting the first steel bar (8).

6. A cold rolled steel sheet for high-end equipment manufacturing according to claim 4, wherein a plurality of vertical steel wires (11) are embedded inside the vertical ends of the anti-torque sleeve (3), a plurality of transverse steel wires (12) are embedded inside the horizontal ends of the anti-torque sleeve (3), and the plurality of transverse steel wires (12) and the plurality of vertical steel wires (11) are in interference fit.

Technical Field

The invention relates to the technical field of cold-rolled steel sheets, in particular to a cold-rolled steel sheet manufactured by high-end equipment.

Background

The cold rolling is a steel plate produced by a cold rolling process, namely a cold plate for short, the thickness of the cold rolled plate is generally between 0.1 and 8.0mm, the thickness of the cold rolled plate produced by most factories is below 4.5mm, the thickness and the width of the cold rolled plate are determined according to the equipment capacity and market demand of each factory, the cold rolling is a steel plate which is further rolled to the target thickness below the recrystallization temperature under the room temperature condition, and compared with the hot rolled plate, the cold rolled plate has more accurate thickness, smooth surface and beautiful surface.

Firstly, although the cold-rolled steel plate is not subjected to thermoplastic compression, residual stress still exists in the cold-rolled steel plate, so that the overall bending property and the local bending property of the cold-rolled steel plate are increased, and the hardness of the cold-rolled steel plate is reduced; secondly, the cold-rolled steel plate manufactured by the existing high-end equipment is generally an open section, so that the free torsional rigidity of the section is lower, torsion is easy to occur when the section is bent, and the torsional property is poorer.

Disclosure of Invention

The invention aims to: the cold-rolled steel plate manufactured by high-end equipment is provided in order to solve the problem that the residual stress in the cold-rolled steel plate manufactured by the high-end equipment influences the hardness of the steel plate and the poor torsional property of an opening section.

In order to achieve the purpose, the invention adopts the following technical scheme:

a cold-rolled steel plate manufactured by high-end equipment comprises a cold-rolled steel plate, wherein the vertical section of the cold-rolled steel plate is of an L-shaped structure, a ceramic block is embedded in the cold-rolled steel plate, a cavity is formed in the ceramic block, a plurality of fixed blocks are arranged on the top end surface and the bottom end surface of an inner cavity of the ceramic block at equal intervals, a plurality of connecting rods are arranged between the plurality of fixed blocks which are opposite up and down, and the plurality of connecting rods are rotatably connected with the plurality of fixed blocks through rotating shafts; the fixed block is made of manganese steel, and the hardness of the manganese steel is greater than that of the cold-rolled steel plate; the outer surface of the ceramic block is a smooth surface, and horn-shaped elastic rings are arranged on two sides of the ceramic block; the smaller end of the elastic ring is fixedly connected to the ceramic block through pouring glue. When the cold-rolled steel plate works, the cold-rolled steel plate manufactured by the existing high-end equipment still has some defects, although the cold-rolled steel plate is not subjected to thermoplastic compression, the internal part still has residual stress, so that the overall and local bending characteristics of the cold-rolled steel plate are increased, and the hardness of the cold-rolled steel plate is reduced, therefore, the ceramic block is embedded in the cold-rolled steel plate, the plurality of fixed blocks are equidistantly arranged at the top and the bottom of the inner cavity of the ceramic block, the upper fixed block and the lower fixed block are rotationally connected through the connecting rod, the residual stress in the cold-rolled steel plate is dispersed to the ceramic block, when the cold-rolled steel plate bears pressure, the force of the connecting rod in the ceramic block is circularly dispersed to the fixed blocks and other connecting rods, when the cold-rolled steel plate bears pressure, the ceramic block is crushed, ceramic fragments are embedded in the inner side of, on one hand, the ceramic block can be supported more strongly, on the other hand, when the pressure bearing capacity of the cold-rolled steel plate is larger, the ceramic block can be crushed by the combined action of the cold-rolled steel plate and the fixed block, the speed of cracking of the ceramic block is accelerated, the cracking of the ceramic block is effectively utilized to release pressure, meanwhile, the elastic rings are arranged on the surfaces of the two sides of the ceramic block, the connection strength of the elastic rings can be better by utilizing the fixed connection of glue, meanwhile, the surface of the ceramic block is set to be a smooth surface, so that the glue can be more easily and fixedly connected with the ceramic block during the filling process, the waste of the glue is less, the elastic rings arranged in a horn shape can be extruded when the ceramic block is positioned in the cold-rolled steel plate, thereby the air in the ceramic block is extruded out, the suction force is generated when the negative pressure is formed in the ceramic, affecting the dispersion of the force by the fixed block.

Preferably, the two vertical extending ends of the ceramic are fixedly connected with flexible steel sheets; the flexible steel sheet is bent when stressed, so that the flexible steel sheet is tightly propped against the inside of the cold-rolled steel sheet. The during operation, through the flexible steel sheet that is equipped with at ceramic block both ends, prepressing flexible steel sheet before embedding ceramic block, make flexible steel sheet take place crooked, thereby be convenient for putting into of ceramic block, when ceramic block gets into cold-rolled steel sheet inside, flexible steel sheet is crooked under the spring action of self, thereby only support the inslot that tightly is equipped with in cold-rolled steel sheet inside, realized the fixed of two perpendicular extension ends of ceramic block, when the cold-rolled steel sheet atress, immobilized ceramic block can give stronger support, thereby the holistic hardness of cold-rolled steel sheet has been improved.

Preferably, the flexible steel sheet is arranged in a bent hook shape, and the bending direction is anticlockwise. During operation, thereby set up to crooked form during the flexible steel sheet initial condition and be convenient for artificially to apply pressure and make the flexible steel sheet crooked, improve the installation convenience of ceramic piece, flexible steel sheet springs back rapidly when losing pressure simultaneously to the tight effect of supporting of flexible steel sheet has been strengthened.

Preferably, anti-torque sleeve is all installed to two vertical extension ends of cold-rolled steel sheet, the vertical cross-section of anti-torque sleeve is the type of falling U structure, the welding of the inboard horizontal end central point department of putting of anti-torque sleeve has the needle of wearing, the bottom of wearing the needle is rotated through the pivot and is connected with two first billet, the anti-torque groove that is the shape of falling T structure is all seted up to the level of cold-rolled steel sheet and vertical extension end, the anti-torque groove uses with first billet cooperation. When the opening section of the cold-rolled steel plate is under pressure, a plurality of vertical steel wires and transverse steel wires are respectively embedded in the vertical end and the horizontal end of the anti-torsion sleeve with the U-shaped vertical section, and the transverse steel wires and the vertical steel wires bear the pressure in a concentrated manner, so that the anti-torsion capacity of the opening section is improved; during the use, after the cold-rolled steel sheet processing was accomplished, install the antitorque cover in the antitorque inslot side, two first billet run through the antitorque groove under the effect of pressure and extend the end and detain in first fixed slot inboard, then install the resistance to compression cover in the outer wall of cold-rolled steel sheet department of buckling, the second billet directly runs through pressure boost groove and extends the end and detain in the second fixed slot inboard, simple structure has improved installation agility and stability.

Preferably, a first fixing groove matched with the first steel bar for use is formed in the inner side of the vertical end of the torsion-resistant sleeve. The stability of installation between anti-torque sleeve and the cold-rolled steel sheet has further been improved.

Preferably, a plurality of vertical steel wires are embedded in the vertical end of the anti-torsion sleeve, a plurality of transverse steel wires are embedded in the horizontal end of the anti-torsion sleeve, and the transverse steel wires and the vertical steel wires are in interference fit. During operation, the hardness of a plurality of transverse steel wires in the same direction and a plurality of vertical steel wires in the same direction are utilized to disperse the pressure at the opening section of the cold-rolled steel plate, and the torsion resistance at the opening section of the cold-rolled steel plate is improved.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the invention, the ceramic block is embedded in the cold-rolled steel plate, the plurality of fixed blocks are equidistantly arranged at the top and the bottom of the inner cavity of the ceramic block, the upper fixed block and the lower fixed block are rotatably connected through the connecting rod, residual stress in the cold-rolled steel plate is dispersed to the ceramic block, when the cold-rolled steel plate bears pressure, the force of the connecting rod in the ceramic block is circularly dispersed to the fixed blocks and other connecting rods, when the cold-rolled steel plate bears pressure, the ceramic block is crushed, and ceramic fragments are embedded in the inner side of the cold-rolled steel plate to always keep a pressure-dispersed state, so that the.

2. According to the anti-torsion sleeve, the anti-torsion sleeve is arranged at the opening section of the cold-rolled steel plate, the needle penetrates through the horizontal end of the anti-torsion groove, the extending end of the needle is clamped on the inner side of the first fixing groove, when the opening section is stressed, a plurality of vertical steel wires and transverse steel wires are embedded in the vertical end and the horizontal end of the anti-torsion sleeve with the U-shaped vertical section respectively, and the transverse steel wires and the vertical steel wires are used for bearing the stress in a concentrated mode, so that the anti-torsion capacity of the opening section is improved.

3. According to the invention, the fixing block made of the high manganese steel material has higher hardness, so that on one hand, the ceramic block can be supported more strongly, and on the other hand, when the cold-rolled steel plate has higher pressure bearing capacity, the ceramic block can be crushed by the combined action of the cold-rolled steel plate and the fixing block, so that the cracking speed of the ceramic block is accelerated, and the cracking of the ceramic block is effectively utilized to release pressure; and the elastic ring that loudspeaker form set up can be extruded when ceramic piece is located cold-rolled steel sheet inside to extrude inside air, make the inside state that forms the negative pressure produce suction, make ceramic piece receive certain limiting displacement, avoid ceramic piece to rock at will and lead to the random removal of inside fixed block, influence the dispersion effect of fixed block to power.

Drawings

FIG. 1 is a side cross-sectional view of a cold rolled steel sheet manufactured by a high-end equipment according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A illustrating the fabrication of a high-end assembly in accordance with the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B illustrating the fabrication of a high-end assembly in accordance with the present invention;

FIG. 4 is a side cross-sectional view of a ceramic block of a cold rolled steel sheet manufactured by a high-end rig according to the present invention;

FIG. 5 is a side cross-sectional view of a torsion sleeve of a high-end equipment-made cold rolled steel sheet according to the present invention;

illustration of the drawings:

1. cold-rolled steel sheets; 2. a ceramic block; 3. an anti-torque sleeve; 4. an elastic ring; 5. a fixed block; 6. a connecting rod; 7. threading a needle; 8. a first steel strip; 9. an anti-torque groove; 10. a first fixing groove; 11. erecting steel wires; 12. a transverse steel wire; 13. a flexible steel sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a cold-rolled steel plate manufactured by high-end equipment comprises a cold-rolled steel plate 1, wherein the vertical section of the cold-rolled steel plate 1 is of an L-shaped structure, a ceramic block 2 is embedded in the cold-rolled steel plate 1, a cavity is formed in the ceramic block 2, a plurality of fixing blocks 5 are arranged on the top end face and the bottom end face of an inner cavity of the ceramic block 2 at equal intervals, a plurality of connecting rods 6 are arranged between the plurality of fixing blocks 5 which are opposite up and down, and the plurality of connecting rods 6 are rotatably connected with the plurality of fixing blocks 5 through rotating shafts; the fixed block 5 is made of manganese steel, and the hardness of the manganese steel is greater than that of the cold-rolled steel plate 1; the outer surface of the ceramic block 2 is a smooth surface, and horn-shaped elastic rings 4 are arranged on two sides of the ceramic block 2; the smaller end of the elastic ring 4 is fixedly connected to the ceramic block 2 through pouring glue. During operation, the cold-rolled steel sheet 1 manufactured by the existing high-end equipment still has some defects, although the cold-rolled steel sheet 1 is not subjected to thermoplastic compression, residual stress still exists in the cold-rolled steel sheet, so that the overall and local bending characteristics of the cold-rolled steel sheet 1 are increased, and the hardness of the cold-rolled steel sheet 1 is reduced, therefore, the ceramic block 2 is embedded in the cold-rolled steel sheet 1, the fixed blocks 5 are arranged at the top and the bottom of the inner cavity of the ceramic block 2 at equal intervals, the upper fixed block and the lower fixed block 5 are rotationally connected through the connecting rods 6, the residual stress in the cold-rolled steel sheet 1 is dispersed to the ceramic block 2, when the cold-rolled steel sheet 1 bears pressure, the force of the connecting rods 6 in the ceramic block 2 is circularly dispersed up and down to the fixed blocks 5 and other connecting rods 6, when the cold, the whole bearing capacity and the hardness of the cold-rolled steel plate 1 are improved, the fixing block 5 made of high manganese steel has higher hardness, on one hand, the ceramic block 2 can be supported more strongly, on the other hand, when the cold-rolled steel plate 1 bears larger pressure, the ceramic block 2 can be crushed by the combined action of the cold-rolled steel plate 1 and the fixing block 2, the speed of cracking of the ceramic block 2 is accelerated, the cracking of the ceramic block 2 is effectively utilized to release pressure, meanwhile, the elastic rings 4 are arranged on the surfaces of the two sides of the ceramic block 2, the connection strength of the elastic rings 4 can be better by utilizing the fixed connection of glue, meanwhile, the surface of the ceramic block 2 is set to be a smooth surface, so that the glue can be more easily fixedly connected with the ceramic block 2 during the pouring, the waste of the glue is reduced, and the elastic rings 4 arranged in a horn shape can be extruded when the ceramic block 2 is positioned inside the cold, make the inside state that forms the negative pressure produce suction for ceramic block 2 receives certain limiting displacement, avoids ceramic block 2 to rock at will and leads to the random removal of inside fixed block 5, influences the dispersion of fixed block 5 to the power.

As an embodiment of the invention, the two vertically extending ends of the ceramic block 2 are fixedly connected with flexible steel sheets 13; the flexible steel sheet 13 is bent when being stressed, so as to be tightly propped against the inside of the cold-rolled steel sheet 1. The during operation, through the flexible steel sheet 13 that is equipped with at 2 both ends of ceramic block, prepressing flexible steel sheet 13 before embedding ceramic block 2, make flexible steel sheet 13 take place crooked, thereby be convenient for putting into of ceramic block 2, ceramic block 2 gets into during 1 inside cold-rolled steel sheet, flexible steel sheet 13 is crooked under the elasticity effect of self, thereby only support the inslot that tightly is equipped with in 1 inside cold-rolled steel sheet, realized the fixed to 2 perpendicular extension ends of ceramic block, when 1 atress of cold-rolled steel sheet, immobilized ceramic block 2 can give stronger support, thereby 1 holistic hardness of cold-rolled steel sheet has been improved.

In one embodiment of the present invention, the flexible steel sheet 13 is configured to be bent in a hook shape and the bending direction is counterclockwise. During operation, thereby set up to crooked form during flexible steel sheet 13 initial condition and be convenient for artificially exert pressure and make flexible steel sheet 13 crooked, improve the installation convenience of ceramic block 2, flexible steel sheet 13 springs back rapidly when losing pressure simultaneously to the tight effect of supporting of flexible steel sheet 13 has been strengthened.

As an embodiment of the present invention, the anti-torsion sleeves 3 are mounted at two vertically extending ends of the cold-rolled steel sheet 1, a vertical cross section of each anti-torsion sleeve 3 is in an inverted U-shaped structure, a needle 7 is welded at a central position of an inner horizontal end of each anti-torsion sleeve 3, two first steel bars 8 are rotatably connected to a bottom end of each needle 7 through a rotating shaft, anti-torsion grooves 9 in an inverted T-shaped structure are formed at the horizontally and vertically extending ends of the cold-rolled steel sheet 1, and the anti-torsion grooves 9 are used in cooperation with the first steel bars 8. When the anti-twisting device works, a cold-rolled steel plate manufactured by the existing high-end equipment is generally an open section, so that the free torsional rigidity of the section is lower, torsion is easy to occur when the cold-rolled steel plate is bent, and the anti-twisting performance is poor, therefore, the anti-twisting sleeve 3 is arranged at the open section of the cold-rolled steel plate 1, the two first steel bars 8 are matched with the anti-twisting grooves 9 formed in the cold-rolled steel plate 1 for use through the penetrating needle 7 and the two first steel bars 8, the two first steel bars 8 penetrate through the horizontal end of the anti-twisting grooves 9, the extending ends are clamped inside the first fixing grooves 10, when the open section is subjected to pressure, a plurality of vertical steel wires 11 and a plurality of horizontal steel wires 12 are respectively embedded inside the vertical end and the horizontal end of the anti-twisting sleeve with the U-shaped vertical section, and the; during the use, after 1 processing of cold-rolled steel sheet is accomplished, install antitorque cover 3 at antitorque groove 9 inboard, two first billet 8 run through antitorque groove 9 under the effect of pressure and extend the end and detain in first fixed slot 10 inboard, then install resistance to compression cover 4 in the outer wall department of buckling of cold-rolled steel sheet 1, the second billet directly runs through pressure-increasing groove 15 and extends the end and detain at second fixed slot 16 inboardly, simple structure has improved and has installed agility and stability.

As an embodiment of the present invention, a first fixing groove 10 is formed inside the vertical end of the torsion-resistant sleeve 3 for matching with the first steel bar 8. The stability of the installation between the anti-torque sleeve 3 and the cold-rolled steel sheet 1 is further improved.

As an embodiment of the present invention, a plurality of vertical steel wires 11 are embedded inside a vertical end of the torsion-resistant sleeve 3, a plurality of transverse steel wires 12 are embedded inside a horizontal end of the torsion-resistant sleeve 3, and the plurality of transverse steel wires 12 and the plurality of vertical steel wires 11 are in interference fit. During operation, the hardness of the plurality of transverse steel wires 12 in the same direction and the hardness of the plurality of vertical steel wires 11 in the same direction are utilized to disperse the pressure at the opening section of the cold-rolled steel sheet 1, so that the torsion resistance at the opening section of the cold-rolled steel sheet 1 is improved.

During operation, the cold-rolled steel sheet 1 manufactured by the existing high-end equipment still has some defects, although the cold-rolled steel sheet 1 is not subjected to thermoplastic compression, residual stress still exists in the cold-rolled steel sheet, so that the overall and local bending characteristics of the cold-rolled steel sheet 1 are increased, and the hardness of the cold-rolled steel sheet 1 is reduced, therefore, the ceramic block 2 is embedded in the cold-rolled steel sheet 1, the fixed blocks 5 are arranged at the top and the bottom of the inner cavity of the ceramic block 2 at equal intervals, the upper fixed block and the lower fixed block 5 are rotationally connected through the connecting rods 6, the residual stress in the cold-rolled steel sheet 1 is dispersed to the ceramic block 2, when the cold-rolled steel sheet 1 bears pressure, the force of the connecting rods 6 in the ceramic block 2 is circularly dispersed up and down to the fixed blocks 5 and other connecting rods 6, when the cold, the whole bearing capacity and the hardness of the cold-rolled steel plate 1 are improved, the fixing block 5 made of high manganese steel has higher hardness, on one hand, the ceramic block 2 can be supported more strongly, on the other hand, when the cold-rolled steel plate 1 bears larger pressure, the ceramic block 2 can be crushed by the combined action of the cold-rolled steel plate 1 and the fixing block 2, the speed of cracking of the ceramic block 2 is accelerated, the cracking of the ceramic block 2 is effectively utilized to release pressure, meanwhile, the elastic rings 4 are arranged on the surfaces of the two sides of the ceramic block 2, the connection strength of the elastic rings 4 can be better by utilizing the fixed connection of glue, meanwhile, the surface of the ceramic block 2 is set to be a smooth surface, so that the glue can be more easily fixedly connected with the ceramic block 2 during the pouring, the waste of the glue is reduced, and the elastic rings 4 arranged in a horn shape can be extruded when the ceramic block 2 is positioned inside the cold, the suction force is generated in a state that negative pressure is formed inside, so that the ceramic block 2 is limited to a certain extent, and the phenomenon that the fixed block 5 inside moves randomly due to random shaking of the ceramic block 2 to influence the force dispersion effect of the fixed block 5 is avoided; simultaneously through the flexible steel sheet 13 that is equipped with at 2 both ends of ceramic block, prepressing flexible steel sheet 13 before embedding ceramic block 2, make flexible steel sheet 13 take place crooked, thereby be convenient for putting into of ceramic block 2, when ceramic block 2 gets into cold-rolled steel sheet 1 inside, flexible steel sheet 13 is crooked under the elasticity effect of self, thereby only support the inslot that tightly is equipped with in cold-rolled steel sheet 1 inside, realized the fixed to two perpendicular extension ends of ceramic block 2, when 1 atress of cold-rolled steel sheet, immovable ceramic block 2 can give stronger support, thereby the holistic hardness of cold-rolled steel sheet 1 has been improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.