There is basically no difference in the methods used by large automobile companies to process parts using the stamping process. Even if the difference occurs, it is caused by the use of different materials. The modern automobile industry is increasingly pursuing lightweight, and the aluminum body has formed a mainstream trend. Material and steel are different in their performance. In comparison, the stamping of the aluminum body is more technically difficult than that of steel, and the surface treatment of automobile molds must also vary from material to material.

The process of sheet metal processing

The metal sheet is processed, and the main processes are shearing, punching, cutting, and folding. During the processing, the metal sheet is subjected to artificial or mechanical stamping deformation, so that the sheet can form the set specifications and shapes. , If you want to get more complex and durable ideal components, you can apply welding or additional processing on this basis. Sheet metal components are very common in daily life. Household chimneys and body shells are all in this column, which can be made by sheet metal technology. A variety of sheet metal processing components, ventilation pipes, funnels, fuel tanks, etc. are the products of this process.

It should be pointed out that when using sheet metal technology to process metal sheets, the understanding and application of geometric knowledge are essential. Since the processing objects of sheet metal technology are mainly metal plates, the finished products are usually also called hardware components. The processing process is to standardize the stretching, bending, buckle, stamping, etc. of the metal sheet, and to ensure that the sheet maintains the same thickness from beginning to end. In addition, some casting, forging, and machining components can also be called Sheet metal components, such as stainless steel kitchen utensils, automotive metal casings, etc.

Common problems and causes of sheet metal stamping parts processing

• Burr, when trimming or punching during sheet metal processing, excess material and truncated surface will inevitably be generated. There will be burrs in these parts. If the truncated surface is set as the reference point to test the burr, if its height exceeds 0.2 mm, the iron powder is caused by the burr, which will aggravate the loss of the mold, and at the same time, the mold will become uneven.

• Concave and convex, when foreign objects such as dust or iron filings enter the uncoiler line, it will cause the surface of the material to become uneven, thereby damaging the sheet metal effect.

• Roller printing, if there are foreign objects attached to the surface of the roller responsible for feeding or cleaning, it will cause a fixed-pitch roller printing, which can be used to clean the sheet printing.

• Sliding mark, when the roller accelerates or stops suddenly, it is easy to cause its sliding, and the sliding will produce marks.

• The crushing of the coil material may cause the edge to wrinkle. The uncoiler line is provided with a guide roller, which may cause wrinkling when the die guide roller has a too small gap. The reason for this phenomenon is that the coil material is not kept in balance when feeding.

• Scratches, if the operation is not meticulous during the processing process, the metal chips fall into the mold, or there are sharp and obvious scratches inside the mold, which will cause scratches on the sheet metal components. It is necessary to clean the mold in time or repair the mold scratches.

• The bottom is cracked. During the processing, the edge of the press ring cannot be over-compressed, and at the same time, ensure that the sheet metal material has strong plasticity. Otherwise, the bottom of the sheet metal component is prone to cracking. The press ring can be appropriately loosened, and material with strong plasticity can be selected.

• Wrinkles on the side walls, if the sheet metal material does not reach the standard thickness, or if the upper and lower dies are eccentric, and the gaps on both sides are different, there will be wrinkles on the side walls of the components, and the dies can be standardized and adjusted immediately according to the specific situation. Can also be replaced with standard sheet metal materials.

Conclusion

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