High-strength steel plate stamping forming cracking treatment method

Abstract

The invention discloses a high-strength steel plate stamping forming cracking treatment method, which belongs to the technical field of cracking treatment, and comprises the following steps: obtaining a cracked high-strength steel plate, and placing the cracked high-strength steel plate in a cleaning device; according to the method, crack treatment of the steel plate is achieved by adopting a filler welding method, in the treatment process, high-temperature molten welding flux has excellent fluidity, cracks of the steel plate can be effectively filled up, the welding flux can be effectively integrated with the steel plate after being cooled, and in this way, the welding flux can be recycled, and the quality of the steel plate is improved. According to the method, the subsequent use strength of the steel plate can be effectively guaranteed, the cracking condition of the steel plate is substantially solved, the later service life of the steel plate is effectively guaranteed, meanwhile, the cracking condition is treated in the method, a production mold is specifically adjusted according to the cracking condition of the steel plate, and the production efficiency is improved. The subsequent steel plate cracking condition can be effectively prevented, the problem of steel plate cracking can be solved essentially, and the actual application effect of the whole method is good.

Description

Technical Field

[0001] The invention belongs to the technical field of cracking treatment, and in particular relates to a high-strength steel plate stamping forming cracking treatment method. Background Art

[0002] Steel plate is a common plate material. Due to its high structural strength, steel plate is used in various fields. Some high-strength steel plates have greater structural strength than ordinary steel plates. Generally, high-strength steel plates will adopt the drawing process during stamping. In this process, the steel plate is prone to cracking. In order to deal with this situation, a steel plate stamping forming cracking treatment method is needed.

[0003] Although the current steel plate cracking treatment method can deal with the cracking of the steel plate, it mainly adopts the method of ordinary filling material to fill the cracks. Although the cracks can be filled in this way, the subsequent use strength of the steel plate cannot be guaranteed, the cracking of the steel plate has not been substantially solved, the later service life cannot be improved, and the fluidity of the filler cannot be guaranteed, and the effectiveness of the crack filler cannot be guaranteed. At the same time, it only deals with the cracking situation, and does not adjust the production mold. It cannot effectively prevent the subsequent steel plate cracking. The actual application effect of the overall method is not good. In order to solve this problem, a high-strength steel plate stamping forming cracking treatment method is urgently needed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that although the current steel plate cracking treatment method can handle the cracking of the steel plate, it mainly adopts the method of ordinary filling material to the cracking position to fill the crack. Although the crack can be filled in this way, the subsequent use strength of the steel plate cannot be guaranteed, the cracking of the steel plate is not substantially solved, the later service life cannot be improved, and the fluidity of the filler cannot be guaranteed, and the effectiveness of the crack filler cannot be guaranteed. At the same time, it only handles the cracking situation, and does not adjust the production mold, and cannot effectively prevent the subsequent steel plate cracking. The actual application effect of the overall method is not good. A high-strength steel plate stamping forming cracking treatment method is proposed.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: A method for treating cracking of a high-strength steel plate during stamping forming, comprising the following steps: S1. Obtain a cracked high-strength steel plate, place it in a cleaning device, add a cleaning liquid, and clean it at a certain temperature; S2. After cleaning, the high-strength steel plate is taken out and placed in a drying device to provide a certain temperature for rapid drying; S3, placing it on a grinding device, and clamping and fixing the steel plate with a clamp; S4. Use the grinding device to grind the cracked part of the steel plate along the calibration line to ensure the grinding thickness; S5. Trimming the steel plate; S6. Use a welding gun to weld the cracked part of the steel plate so that the solder can stably fill the cracked part; S7, reinstall the steel plate on the grinding device, and use the grinding device to process the weld; S8. Modify the forming mold; S9. Set the preheating temperature of the mold.

[0006] As a further description of the above technical solution: In S1, a cracked high-strength steel plate is obtained, placed in a cleaning device, and diluted hydrochloric acid cleaning solution is added to clean the cracked high-strength steel plate at 50-60°C.

[0007] As a further description of the above technical solution: In S2, after cleaning, the high-strength steel plate is taken out and placed in a drying device, where a temperature of 70-80° C. is provided for rapid drying.

[0008] As a further description of the above technical solution: In S3, the steel plate is placed on a grinding device, and the steel plate is clamped and fixed by a clamp, and the crack position of the steel plate is marked by a marking pen.

[0009] As a further description of the above technical solution: In S4, a grinding device is used to grind the cracked part of the steel plate along the calibration line to ensure that the cracked part is 2-3 mm.

[0010] As a further description of the above technical solution: In the above S5, the steel plate is trimmed, and the trimming line cannot have an angle. The trimming line is a straight line or an arc, and the straight line and the arc must be tangent.

[0011] As a further description of the above technical solution: In S6, the cracked portion of the steel plate is welded using a welding gun so that the solder stably fills the cracked portion, and the weld is struck with a striking hammer so that the outer skin of the weld falls off.

[0012] As a further description of the above technical solution: In S7, the steel plate is reinstalled on the grinding device, and the weld is processed by the grinding device so that the upper surface of the weld is flush with the upper surface of the steel plate.

[0013] As a further description of the above technical solution: In the above-mentioned S8, the forming die is modified by changing the punch shape, strengthening the guide device and adding a bushing. This method can effectively reduce the stress concentration of the formed steel plate, thereby effectively reducing the cracking.

[0014] As a further description of the above technical solution: In S9, the preheating temperature of the mold is set to 240-260°C.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: In the present invention, the method realizes the treatment of cracks in steel plates by adopting a welding filler method. During the treatment process, the high-temperature melted solder has excellent fluidity and can effectively fill the cracks of the steel plate. After the solder is cooled, it can effectively merge with the steel plate. In this way, not only the subsequent use strength of the steel plate can be effectively guaranteed, the cracking of the steel plate can be substantially solved, and the later service life of the steel plate can be effectively guaranteed. At the same time, the method not only treats the cracking situation, but also makes specific adjustments to the production mold according to the cracking situation of the steel plate, which can effectively prevent the occurrence of subsequent cracking of the steel plate, and help to solve the problem of steel plate cracking in essence. The overall method has a good practical application effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a flow chart of a method for treating cracking during stamping of high-strength steel plates. Implementation

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0018] See also Figure 1 The present invention provides a technical solution: a method for treating cracking of a high-strength steel plate during stamping, comprising the following steps: S1. Obtain a cracked high-strength steel plate, place it in a cleaning device, add a dilute hydrochloric acid cleaning solution, and clean it at 50°C; S2. After cleaning, the high-strength steel plate is taken out and placed in a drying device at a temperature of 70° C. for rapid drying; S3, placing it on a grinding device, clamping the steel plate with a clamp, and marking the cracking position of the steel plate with a marking pen; S4. Use the grinding device to grind the cracked part of the steel plate along the calibration line to ensure that it is 2mm; S5. For trimming of steel plates, there should be no angle on the trimming line. The trimming line should be a straight line or an arc, and the straight line and the arc should be tangent. S6. Use a welding gun to weld the cracked part of the steel plate so that the solder can stably fill the cracked part, and use a percussion hammer to strike the weld so that the outer skin of the weld falls off; S7, reinstall the steel plate on the grinding device, and use the grinding device to process the weld so that the upper surface of the weld is flush with the upper surface of the steel plate; S8. Modify the forming die by changing the punch shape, strengthening the guide device and adding a bushing. This method can effectively reduce the stress concentration of the formed steel plate, thereby effectively reducing the cracking. S9. Set the preheating temperature of the mold to 240°C.

[0019] In this embodiment, the method achieves the treatment of cracks in the steel plate by adopting a welding filler method. During the treatment process, the high-temperature melted solder has excellent fluidity and can effectively fill the cracks of the steel plate. After the solder is cooled, it can be effectively integrated with the steel plate. In this way, not only can the subsequent use strength of the steel plate be effectively guaranteed, the cracking problem of the steel plate can be substantially solved, and the later service life of the steel plate can be effectively guaranteed. Example

[0020] See also Figure 1 The present invention provides a technical solution: a method for treating cracking of a high-strength steel plate during stamping, comprising the following steps: S1. Obtain a cracked high-strength steel plate, place it in a cleaning device, add a dilute hydrochloric acid cleaning solution, and clean it at 52°C; S2. After cleaning, the high-strength steel plate is taken out and placed in a drying device at a temperature of 73° C. for rapid drying; S3, placing it on a grinding device, clamping the steel plate with a clamp, and marking the cracking position of the steel plate with a marking pen; S4. Use the grinding device to grind the cracked part of the steel plate along the calibration line to ensure that it is 2mm; S5. For trimming of steel plates, there should be no angle on the trimming line. The trimming line should be a straight line or an arc, and the straight line and the arc should be tangent. S6. Use a welding gun to weld the cracked part of the steel plate so that the solder can stably fill the cracked part, and use a percussion hammer to strike the weld so that the outer skin of the weld falls off; S7, reinstall the steel plate on the grinding device, and use the grinding device to process the weld so that the upper surface of the weld is flush with the upper surface of the steel plate; S8. Modify the forming die by changing the punch shape, strengthening the guide device and adding a bushing. This method can effectively reduce the stress concentration of the formed steel plate, thereby effectively reducing the cracking. S9. Set the preheating temperature of the mold to 250°C.

[0021] In this embodiment, the method not only handles the cracking situation, but also makes specific adjustments to the production mold according to the cracking situation of the steel plate, which can effectively prevent the subsequent cracking of the steel plate and help to solve the problem of steel plate cracking in essence. The overall method has a good practical application effect. Example

[0022] See also Figure 1 The present invention provides a technical solution: a method for treating cracking of a high-strength steel plate during stamping, comprising the following steps: S1. Obtain a cracked high-strength steel plate, place it in a cleaning device, add a dilute hydrochloric acid cleaning solution, and clean it at 60°C; S2. After cleaning, the high-strength steel plate is taken out and placed in a drying device at a temperature of 80° C. for rapid drying; S3, placing it on a grinding device, clamping the steel plate with a clamp, and marking the cracking position of the steel plate with a marking pen; S4. Use the grinding device to grind the cracked part of the steel plate along the calibration line to ensure it is 3mm; S5. For trimming of steel plates, there should be no angle on the trimming line. The trimming line should be a straight line or an arc, and the straight line and the arc should be tangent. S6. Use a welding gun to weld the cracked part of the steel plate so that the solder can stably fill the cracked part, and use a percussion hammer to strike the weld so that the outer skin of the weld falls off; S7, reinstall the steel plate on the grinding device, and use the grinding device to process the weld so that the upper surface of the weld is flush with the upper surface of the steel plate; S8. Modify the forming die by changing the punch shape, strengthening the guide device and adding a bushing. This method can effectively reduce the stress concentration of the formed steel plate, thereby effectively reducing the cracking. S9. Set the preheating temperature of the mold to 260°C.

[0023] In this embodiment, the method achieves the treatment of cracks in the steel plate by adopting a welding filler method. During the treatment process, the high-temperature melted solder has excellent fluidity and can effectively fill the cracks of the steel plate. After the solder is cooled, it can effectively merge with the steel plate. In this way, not only can the subsequent use strength of the steel plate be effectively guaranteed, the cracking problem of the steel plate can be substantially solved, and the later service life of the steel plate can be effectively guaranteed. At the same time, the method not only treats the cracking problem, but also makes specific adjustments to the production mold according to the cracking problem of the steel plate, which can effectively prevent the subsequent cracking of the steel plate and help to solve the problem of steel plate cracking in essence. The actual application effect of the overall method is good. Example

[0024] See also Figure 1 The present invention provides a technical solution: a method for treating cracking of a high-strength steel plate during stamping, comprising the following steps: S1. Obtain a cracked high-strength steel plate, place it in a cleaning device, add a dilute hydrochloric acid cleaning solution, and clean it at 55°C; S2. After cleaning, the high-strength steel plate is taken out and placed in a drying device at a temperature of 75°C for rapid drying; S3, placing it on a grinding device, clamping the steel plate with a clamp, and marking the cracking position of the steel plate with a marking pen; S4. Use the grinding device to grind the cracked part of the steel plate along the calibration line to ensure it is 3mm; S5. For trimming of steel plates, there should be no angle on the trimming line. The trimming line should be a straight line or an arc, and the straight line and the arc should be tangent. S6. Use a welding gun to weld the cracked part of the steel plate so that the solder can stably fill the cracked part, and use a percussion hammer to strike the weld so that the outer skin of the weld falls off; S7, reinstall the steel plate on the grinding device, and use the grinding device to process the weld so that the upper surface of the weld is flush with the upper surface of the steel plate; S8. Modify the forming die by changing the punch shape, strengthening the guide device and adding a bushing. This method can effectively reduce the stress concentration of the formed steel plate, thereby effectively reducing the cracking. S9. Set the preheating temperature of the mold to 255°C.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for treating cracking of high-strength steel plate during stamping, characterized in that: The steps include: S1. Obtain a cracked high-strength steel plate, place it in a cleaning device, add a cleaning liquid, and clean it at a certain temperature; S2. After cleaning, the high-strength steel plate is taken out and placed in a drying device to provide a certain temperature for rapid drying; S3, placing it on a grinding device, and clamping and fixing the steel plate with a clamp; S4. Use the grinding device to grind the cracked part of the steel plate along the calibration line to ensure the grinding thickness; S5. Trimming the steel plate; S6. Use a welding gun to weld the cracked part of the steel plate so that the solder can stably fill the cracked part; S7, reinstall the steel plate on the grinding device, and use the grinding device to process the weld; S8. Modify the forming mold; S9. Set the preheating temperature of the mold.

2. A method for treating cracking of high-strength steel plate during stamping forming according to claim 1, characterized in that: In S1, a cracked high-strength steel plate is obtained, placed in a cleaning device, and diluted hydrochloric acid cleaning solution is added to clean the cracked high-strength steel plate at 50-60°C.

3. A method for treating cracking of a high-strength steel plate during stamping according to claim 1, characterized in that: In S2, after cleaning, the high-strength steel plate is taken out and placed in a drying device, where a temperature of 70-80° C. is provided for rapid drying.

4. A method for treating cracking of a high-strength steel plate during stamping according to claim 1, characterized in that: In S3, the steel plate is placed on a grinding device, and the steel plate is clamped and fixed by a clamp, and the crack position of the steel plate is marked by a marking pen.

5. The method for treating cracking of high-strength steel plate during stamping forming according to claim 1, characterized in that: In S4, a grinding device is used to grind the cracked part of the steel plate along the calibration line to ensure that the cracked part is 2-3 mm.

6. A method for treating cracking of a high-strength steel plate during stamping according to claim 1, characterized in that: In the above S5, the steel plate is trimmed, and the trimming line cannot have an angle. The trimming line is a straight line or an arc, and the straight line and the arc must be tangent.

7. A method for treating cracking of a high-strength steel plate during stamping according to claim 1, characterized in that: In S6, the cracked portion of the steel plate is welded using a welding gun so that the solder stably fills the cracked portion, and the weld is struck with a striking hammer so that the outer skin of the weld falls off.

8. A method for treating cracking of a high-strength steel plate during stamping according to claim 1, characterized in that: In S7, the steel plate is reinstalled on the grinding device, and the weld is processed by the grinding device so that the upper surface of the weld is flush with the upper surface of the steel plate.

9. A method for treating cracking of a high-strength steel plate during stamping according to claim 1, characterized in that: In the above-mentioned S8, the forming die is modified by changing the punch shape, strengthening the guide device and adding a bushing. This method can effectively reduce the stress concentration of the formed steel plate, thereby effectively reducing the cracking.

10. A method for treating cracking of a high-strength steel plate during stamping according to claim 1, characterized in that: In S9, the preheating temperature of the mold is set to 240-260°C.

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