A carbon steel and stainless steel composite coil production device

Abstract

The present invention discloses a carbon steel and stainless steel composite coil production device, which relates to the field of rolling production technology, including a first conveying structure for conveying carbon steel strips and a second conveying structure for conveying stainless steel strips, the first conveying structure including a first conveying roller, a first direction roller and a first extrusion roller, and the carbon steel strip passes through the first conveying roller, the first direction roller and the first extrusion roller in sequence, and also includes: a conveying pipe, through which the interlayer material is conveyed to the surface of the carbon steel strip; a smoothing part, which includes a transmission shaft and a smoothing roller, and the smoothing roller is fixedly installed on the outside of the transmission shaft. The present invention cleans the oxide scale on the surface of the carbon steel strip during the conveying process, and the interlayer material can fully contact the carbon steel strip, which helps to increase the bonding strength. The smoothing part simultaneously smoothes the interlayer material during the conveying process to avoid excessive accumulation of the interlayer material, thereby further increasing the bonding strength of the carbon steel strip and the stainless steel strip.

Description

Technical Field

[0001] The invention relates to the technical field of rolling production, in particular to a carbon steel and stainless steel composite coil production device. Background Art

[0002] Carbon steel and stainless steel composite plates, the stainless steel layer has corrosion resistance and good thermal conductivity, and is mostly used as the inner layer to directly contact the interlayer material. Carbon steel is mostly used as the outer layer. Carbon steel ensures the high strength and high rigidity of the composite plate, can withstand large loads and stresses, and meet various needs.

[0003] Carbon steel and stainless steel composite plates can be prepared by rolling. The carbon steel and stainless steel billets are heated at high temperature and then rolled multiple times through a rolling mill. During the rolling process, the two metals gradually fit together under pressure and form a bond through atomic diffusion. Generally, the rolling temperature is high, which is conducive to the plastic deformation of the metal and allows the two materials to fuse better. This method can achieve continuous production and is suitable for large-scale production. However, during the rolling process, chromium atoms easily diffuse from the stainless steel layer to the carbon steel layer. Chromium is one of the most important alloying elements in stainless steel, and its primary function is to enhance the corrosion resistance of stainless steel. The diffusion of chromium atoms will inevitably lead to a decrease in the performance of the stainless steel layer. Therefore, by adding interlayer materials such as Ni and Nb to the bonding surface, the diffusion of Cr in stainless steel can be effectively inhibited. However, the addition of the intermediate interlayer has a greater effect on the bonding strength of the composite plate. Summary of the Invention

[0004] The purpose of the present invention is to provide a carbon steel and stainless steel composite coil production device to solve the above-mentioned deficiencies in the prior art.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a carbon steel and stainless steel composite coil production device, comprising a first conveying structure for conveying carbon steel strip and a second conveying structure for conveying stainless steel strip, wherein the first conveying structure comprises a first conveying roller, a first direction roller, and a first extrusion roller, and the carbon steel strip passes through the first conveying roller, the first direction roller, and the first extrusion roller in sequence, and further comprising:

[0006] A conveying pipe, through which the interlayer material is conveyed to the surface of the carbon steel strip;

[0007] A smoothing part, comprising a transmission shaft and a smoothing roller, wherein the smoothing roller is fixedly mounted on the outside of the transmission shaft, and the smoothing part is used to smooth the interlayer material on the surface of the carbon steel strip;

[0008] The cleaning mechanism is used to clean the oxide scale at the joint surface of the carbon steel strip. The cleaning mechanism includes a fixed block, a collar, and a scraper. The collar is rotatably connected to the outside of the transmission shaft, the fixed block is fixedly connected to the collar, and the scraper is slidably connected to the fixed block.

[0009] Chip removal mechanism, the oxide scale removed by the cleaning mechanism is discharged through the chip removal mechanism;

[0010] The transmission structure is connected to the first squeezing roller, the smoothing part and the chip removal mechanism through the transmission structure.

[0011] Preferably, the chip removal mechanism includes a shell body attached to the upper surface of the carbon steel strip and a conveying auger, the shell body is provided with a chip removal channel, the conveying auger is arranged in the chip removal channel, and the shell body is provided with a feeding inclined surface attached to the carbon steel strip.

[0012] Preferably, a cavity for accommodating the sandwich material is formed between the shell, the scraper and the carbon steel strip.

[0013] Preferably, the scraper is provided with a notch for the conveying pipe to pass through.

[0014] Preferably, the transmission structure includes a pulley portion and a gear portion, the transmission shaft is rotatably connected to the housing, the transmission shaft and the first extrusion roller are connected via the gear portion, and the first extrusion roller and the conveying auger are connected via the pulley portion.

[0015] Preferably, a compensation mechanism is included, which includes a connecting rod and a first elastic member, one end of the connecting rod is fixedly mounted on the blade, the other end of the connecting rod is slidably connected in the fixed block, and the first elastic member is movably sleeved on the outside of the connecting rod.

[0016] Preferably, the cleaning mechanism also includes a flipping part, which includes a second elastic member, a ball, and a groove. The ball is slidably connected to the transmission shaft, and the groove is opened on the inner wall of the ring. The second elastic member applies elastic force to the ball so that the ball has a tendency to move toward the groove.

[0017] Preferably, it comprises a torsion piece, one end of which is fixed on the chip removal mechanism, and the other end of which is fixed on the mounting ring.

[0018] Preferably, the second conveying structure includes a second conveying roller, a second direction roller and a second squeezing roller, and the stainless steel strip passes through the second conveying roller, the second direction roller and the second squeezing roller in sequence.

[0019] Preferably, the carbon steel strip and the stainless steel strip are adhered to each other under the squeezing of the first squeezing roller and the second squeezing roller.

[0020] In the above technical solution, the present invention provides a carbon steel and stainless steel composite coil production device, which cleans the oxide scale on the surface of the carbon steel strip during the transportation process, so that the interlayer material can fully contact the carbon steel strip, which helps to increase the bonding strength. The interlayer material is synchronously smoothed during the transportation process through the corresponding smoothing part, and the interlayer material is evenly distributed on the bonding surface, avoiding excessive accumulation of the interlayer material, and further increasing the bonding strength of the carbon steel strip and the stainless steel strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of a carbon steel and stainless steel composite coil production device of the present invention;

[0023] Figure 2 This is a partial structural front view of a carbon steel and stainless steel composite coil production device according to the present invention;

[0024] Figure 3 This is a schematic diagram of the chip removal structure of a carbon steel and stainless steel composite coil production device of the present invention;

[0025] Figure 4 This is a schematic diagram of a cleaning mechanism for a carbon steel and stainless steel composite coil production device according to the present invention;

[0026] Figure 5 This is an accessory for a carbon steel and stainless steel composite coil production device of the present invention. Figure 4 The schematic diagram of the structure after enlarging A in the middle;

[0027] Figure 6 This is a schematic diagram of the torsion member structure of a carbon steel and stainless steel composite plate rolling production device of the present invention;

[0028] Figure 7 This is a schematic diagram of the explosion-proof cleaning mechanism of a carbon steel and stainless steel composite coil production device of the present invention;

[0029] Figure 8 This is an accessory for a carbon steel and stainless steel composite coil production device of the present invention. Figure 7 The schematic diagram of the structure after enlarging point B in the middle;

[0030] Figure 9 The figure is a transmission structure diagram of a carbon steel and stainless steel composite plate rolling production device of the present invention.

[0031] Explanation of the accompanying drawings: 1. First conveying structure; 11. First conveying roller; 12. First direction roller; 13. First extrusion roller; 2. Second conveying structure; 21. Second conveying roller; 22. Second direction roller; 23. Second extrusion roller; 3. Chip removal mechanism; 31. Shell; 32. Chip removal channel; 33. Feed ramp; 34. Conveying auger; 4. Transmission shaft; 5. Smoothing roller; 6. Cleaning mechanism; 61. Fixed block; 611. Ring; 62. Shovel; 621. Notch; 63. Connecting rod; 64. First elastic member; 7. Conveying pipe; 71. Second elastic member; 72. Ball; 73. Groove; 8. Torque member; 9. Transmission structure; 91. Pulley part; 92. Gear part. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] See also Figure 1-9 An embodiment of the present invention provides a carbon steel and stainless steel composite coil production device, comprising a first conveying structure 1 for conveying carbon steel strip and a second conveying structure 2 for conveying stainless steel strip. The first conveying structure 1 comprises a first conveying roller 11, a first direction roller 12, and a first squeeze roller 13. The carbon steel strip passes through the first conveying roller 11, the first direction roller 12, and the first squeeze roller 13 in sequence. The device also includes:

[0034] Conveying pipe 7, through which the interlayer material is conveyed to the surface of the carbon steel strip;

[0035] The smoothing part includes a transmission shaft 4 and a smoothing roller 5. The smoothing roller 5 is fixedly mounted on the outside of the transmission shaft 4. The smoothing part is used to smooth the interlayer material on the surface of the carbon steel strip;

[0036] The cleaning mechanism 6 is used to clean the oxide scale at the joint surface of the carbon steel strip. The cleaning mechanism 6 includes a fixed block 61, a collar 611, and a scraper 62. The collar 611 is rotatably connected to the outside of the transmission shaft 4, the fixed block 61 is fixedly connected to the collar 611, and the scraper 62 is slidably connected to the fixed block 61.

[0037] Chip removal mechanism 3, the oxide scale removed by the cleaning mechanism 6 is discharged through the chip removal mechanism 3;

[0038] The transmission structure 9 , the first squeezing roller 13 , the smoothing portion and the chip removal mechanism 3 are connected through the transmission structure 9 .

[0039] In the embodiment of the present invention, the interlayer material is Ni and Nb in powder form. The conveying pipe 7 can convey the interlayer material to the bonding surface of the carbon steel strip to ensure that when the carbon steel strip and the stainless steel strip are bonded, the diffusion of Cr in the stainless steel into the carbon steel strip is reduced, thereby reducing the change in the properties of the stainless steel strip.

[0040] During the conveying process of the carbon steel strip, the first squeezing roller 13 rotates. Under the transmission action of the transmission structure 9, the transmission shaft 4 rotates synchronously, and the transmission shaft 4 drives the scraper 62 to rotate. The scraper 62 squeezes the joint surface of the carbon steel strip and removes the oxide layer at the joint surface of the carbon steel strip. After removing the oxide layer, it helps to improve the bonding strength between the carbon steel strip and the stainless steel strip.

[0041] The setting of the smoothing roller 5 can limit the position of the sandwich material, thereby preventing the sandwich material from accumulating in a local area of the carbon steel strip due to the concentrated discharge of the conveying pipe 7, ensuring the uniform distribution of the sandwich material and avoiding the decrease in bonding strength caused by the accumulation of the sandwich material;

[0042] The collar 611 is rotatably connected to the transmission shaft 4. The scraper 62, under the action of its own gravity, will be attached to the joint surface of the carbon steel strip. During the conveying process of the carbon steel strip, the scraper 62 can remove the oxide scale on the surface of the carbon steel strip, thereby improving the bonding between the carbon steel strip and the stainless steel strip.

[0043] The contact position between the scraper 62 and the carbon steel strip is on an inclined surface. The cleaned oxide scale will fall under the action of gravity, and the chip removal mechanism 3 can collect the fallen oxide scale and discharge the collected oxide scale to separate the oxide scale from the carbon steel strip.

[0044] Under the transmission action of the transmission structure 9, the first extrusion roller 13 can drive the conveying auger 34 to rotate when it rotates, so as to realize the discharge of oxide scale; and the transmission shaft 4 is driven to rotate through the transmission structure 9, and the transmission shaft 4 and the ring 611 are rotationally connected. Under the action of friction, the rotation of the transmission shaft 4 will apply a torsional force to the ring 611, so that the scraper 62 has a tendency to flip toward the carbon steel strip. In this way, it helps the scraper 62 to fit closely with the carbon steel strip, further increasing the cleaning effect of the scraper 62.

[0045] In the embodiments of the present invention, please refer to Figure 3 The chip removal mechanism 3 includes a shell 31 attached to the upper surface of the carbon steel strip and a conveying auger 34. The shell 31 is provided with a chip removal channel 32. The conveying auger 34 is arranged in the chip removal channel 32. The shell 31 is provided with a feeding inclined surface 33 attached to the carbon steel strip.

[0046] Since the height of the first extrusion roller 13 is higher than the first direction roller 12, a slope is formed between the two carbon steel strips, and the chip removal mechanism 3 is located at the slope, and the feed slope 33 is in contact with the slope. The oxide scale removed by the scraper 62 will enter the feed slope 33 under the action of gravity, and the oxide scale will enter the chip removal channel 32 through the transportation of the feed slope 33. Under the transmission action of the transmission structure 9, the conveying auger 34 rotates, and the conveying auger 34 will transport the oxide scale from the opening of the chip removal channel 32 for discharge. The chip removal has good continuity and is suitable for continuous production.

[0047] In another embodiment of the present invention, please refer to Figure 3 、 Figure 4 and Figure 5 A cavity for accommodating the sandwich material is formed between the shell 31, the scraper 62 and the carbon steel strip.

[0048] The scraper 62 is used to fit on the carbon steel strip to form a cavity for accommodating the sandwich material, so as to prevent the sandwich material transported by the conveying pipe 7 from escaping. During use, the sandwich material transported by the conveying pipe 7 accumulates on the carbon steel strip. Since the carbon steel strip is in a sloped state at this location, the sandwich material will flow downward. The scraper 62 can hinder the sandwich material from flowing downward, and as the carbon steel strip is continuously transported, the sandwich material will be carried by the carbon steel strip when passing through this area. Due to the setting of the slope surface, as the carbon steel strip moves, most of the sandwich material will detach. After detaching, the sandwich material will return to the bottom of the cavity, which avoids the sandwich material from being concentrated in a certain area of the carbon steel strip to the greatest extent, and ensures the uniform distribution of the sandwich material.

[0049] In yet another embodiment of the present invention, the scraper 62 is provided with a notch 621 for the conveying pipe 7 to pass through.

[0050] The setting of the notch 621 can be used for the passage of the conveying pipe 7. The conveying pipe 7 does not come into contact with the scraper 62 and the smoothing roller 5. The conveying pipe 7 is connected to the external conveying equipment. The conveying equipment is an existing equipment that can convey powder materials. Therefore, it is not drawn in the center of the drawing, and the specific principle of the conveying equipment will not be repeated.

[0051] In the embodiments of the present invention, please refer to Figure 9 The transmission structure 9 includes a pulley portion 91 and a gear portion 92. The transmission shaft 4 is rotatably connected to the housing 31. The transmission shaft 4 and the first squeezing roller 13 are connected via the gear portion 92. The first squeezing roller 13 and the conveying auger 34 are connected via the pulley portion 91.

[0052] By setting the pulley part 91, the conveying auger 34 and the first squeezing roller 13 can rotate synchronously, and by setting the gear part 92, the drive shaft 4 and the first squeezing roller 13 can rotate synchronously, and the drive shaft 4 and the first squeezing roller 13 rotate in opposite directions to ensure that the drive shaft 4 can apply a torque to the ring 611, so that the scraper 62 fits the carbon steel strip and improves the removal effect of the scraper 62.

[0053] In another embodiment of the present invention, please refer to Figure 6 、 Figure 7 、 Figure 8 , including a compensation mechanism, which includes a connecting rod 63 and a first elastic member 64, one end of the connecting rod 63 is fixedly mounted on the scraper 62, the other end of the connecting rod 63 is slidably connected in the fixed block 61, and the first elastic member 64 is movably sleeved on the outside of the connecting rod 63.

[0054] The compensation mechanism is used to compensate the scraper 62. After the scraper 62 is worn, the elastic force of the first elastic member 64 can drive the scraper 62 to move toward the carbon steel strip, so that the cutting edge of the scraper 62 can always fit the carbon steel strip to ensure the removal effect of the scraper 62.

[0055] In another embodiment of the present invention, please refer to Figure 6 、 Figure 7 、 Figure 8 The cleaning mechanism 6 also includes a flipping part, which includes a second elastic member 71, a ball 72, and a groove 73. The ball 72 is slidably connected to the transmission shaft 4, and the groove 73 is opened on the inner wall of the ring 611. The second elastic member 71 applies elastic force to the ball 72 so that the ball 72 has a tendency to move toward the groove 73.

[0056] When the transmission shaft 4 rotates, it drives the ball 72 to revolve around the transmission shaft 4. The ball 72 will inevitably exert a thrust on the groove 73, and the thrust will drive the collar 611 to produce a rotation trend. The rotation of the collar 611 will inevitably drive the scraper 62 to rotate. Therefore, under the action of the transmission shaft 4, the gravity of the scraper 62 itself and the torque exerted on the collar 611, the stability of the scraper 62 is greatly increased, and the scraper 62 will be tightly attached to the carbon steel strip. Moreover, when facing strips of different thicknesses, the scraper 62 can be attached to the carbon steel strip, and has strong applicability.

[0057] In another embodiment of the present invention, please refer to Figure 4 、 Figure 5 、 Figure 6 , including a torque piece 8, one end of which is fixed on the chip removal mechanism 3, and the other end of which is fixed on the mounting ring 611.

[0058] After the carbon steel strip is consumed and a new carbon steel strip needs to be installed, the machine is stopped and, under the action of gravity, the scraper 62 overcomes the resistance of the ball 72 and flips over, causing the scraper 62 to be in a vertical state. This will inevitably make the installation of the carbon steel strip difficult. Therefore, through the torsional action of the torque piece 8, a torsional force in the opposite direction is applied to the ring 611. With the cooperation of the torque piece 8 and the ball 72, the angle of the scraper 62 is guaranteed to be stable, so as to facilitate the installation of the carbon steel strip.

[0059] In an embodiment of the present invention, the second conveying structure 2 includes a second conveying roller 21 , a second direction roller 22 and a second squeezing roller 23 , and the stainless steel strip passes through the second conveying roller 21 , the second direction roller 22 and the second squeezing roller 23 in sequence.

[0060] The stainless steel strip is conveyed by the second conveying structure 2 .

[0061] In the embodiment of the present invention, the carbon steel strip and the stainless steel strip are laminated together under the pressure of the first and second squeeze rollers 13, 23. The first and second squeeze rollers 13, 23 cooperate with each other to convey the carbon steel strip and the stainless steel strip so that the carbon steel strip and the stainless steel strip can be laminated together.

[0062] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A carbon steel and stainless steel composite coil production device, comprising a first conveying structure (1) for conveying carbon steel strips and a second conveying structure (2) for conveying stainless steel strips, wherein the first conveying structure (1) comprises a first conveying roller (11), a first direction roller (12) and a first squeezing roller (13), and the carbon steel strip passes through the first conveying roller (11), the first direction roller (12) and the first squeezing roller (13) in sequence, and is characterized in that: Also includes: A conveying pipe (7), through which the interlayer material is conveyed to the surface of the carbon steel strip; A smoothing portion comprising a transmission shaft (4) and a smoothing roller (5), wherein the smoothing roller (5) is fixedly mounted on the outside of the transmission shaft (4), and the smoothing portion is used to smooth the interlayer material on the surface of the carbon steel strip; A cleaning mechanism (6) is used to clean the oxide scale at the joint surface of the carbon steel strip, and the cleaning mechanism (6) includes a fixed block (61), a collar (611), and a scraper (62), wherein the collar (611) is rotatably connected to the outside of the transmission shaft (4), the fixed block (61) is fixedly connected to the collar (611), and the scraper (62) is slidably connected to the fixed block (61); The first squeezing roller (13) is higher than the first direction roller (12), and the carbon steel strip forms a slope between the first squeezing roller (13) and the first direction roller (12). A chip removal mechanism (3), wherein the oxide scale removed by the cleaning mechanism (6) is discharged through the chip removal mechanism (3); The transmission structure (9), the first squeezing roller (13), the smoothing portion, and the chip removal mechanism (3) are connected to each other through the transmission structure (9); The chip removal mechanism (3) comprises a shell (31) attached to the upper surface of the carbon steel strip and a conveying auger (34), the shell (31) is provided with a chip removal channel (32), the conveying auger (34) is arranged in the chip removal channel (32), and the shell (31) is provided with a feeding inclined surface (33) attached to the carbon steel strip; A cavity for accommodating the sandwich material is formed between the shell (31), the scraper (62) and the carbon steel strip; The invention comprises a compensation mechanism, which comprises a connecting rod (63) and a first elastic member (64), one end of the connecting rod (63) is fixedly mounted on the shovel blade (62), the other end of the connecting rod (63) is slidably connected in the fixed block (61), and the first elastic member (64) is movably sleeved on the outside of the connecting rod (63).

2. The carbon steel and stainless steel composite coil production device according to claim 1, characterized in that: The scraper (62) is provided with a notch (621) for the conveying pipe (7) to pass through.

3. The carbon steel and stainless steel composite coil production device according to claim 2, characterized in that: The transmission structure (9) includes a pulley portion (91) and a gear portion (92); the transmission shaft (4) is rotatably connected to the housing (31); the transmission shaft (4) and the first squeezing roller (13) are connected to each other via the gear portion (92); and the first squeezing roller (13) and the conveying auger (34) are connected to each other via the pulley portion (91).

4. The carbon steel and stainless steel composite coil production device according to claim 3, characterized in that: The cleaning mechanism (6) further comprises a flipping portion, the flipping portion comprising a second elastic member (71), a ball (72), and a groove (73), the ball (72) being slidably connected to the transmission shaft (4), the groove (73) being formed on the inner wall of the collar (611), and the second elastic member (71) applying elastic force to the ball (72) so that the ball (72) has a tendency to move toward the groove (73).

5. The carbon steel and stainless steel composite coil production device according to claim 4, characterized in that: It comprises a torsion piece (8), one end of which is fixed on the chip removal mechanism (3), and the other end of which is fixed on the mounting collar (611).

6. The carbon steel and stainless steel composite coil production device according to claim 1, characterized in that: The second conveying structure (2) comprises a second conveying roller (21), a second direction roller (22) and a second squeezing roller (23), and the stainless steel strip passes through the second conveying roller (21), the second direction roller (22) and the second squeezing roller (23) in sequence.

7. The carbon steel and stainless steel composite coil production device according to claim 1, characterized in that: The carbon steel strip and the stainless steel strip are pressed together by the first squeezing roller (13) and the second squeezing roller (23).

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