Many of the metal stamping parts produced by Bosi Hardware require bending process treatment, which may cause surface scratches during bending. So why does this happen? Below, the editor will explain the reasons and solutions. After all, we have more than 10 years of production experience in the hardware industry and have a certain understanding of this process.

The original solution for scratching the bending surface of metal stamping parts

1. When continuous bending is applied to soft materials such as copper and aluminum alloys, metal particles or slag are prone to adhere to the surface of the working area, causing significant scratches on the workpiece.

Solution: At this point, it is necessary to carefully analyze and study the shape and lubricating oil of the working area to ensure that there are no particles or debris on the blank, which may cause scratches.

2. When the bending direction of metal stamping is parallel to the rolling direction of the material, cracks will appear on the surface of the workpiece, resulting in a decrease in the surface quality of the workpiece.

Solution: When performing metal stamping bending on two or more parts, it is necessary to ensure that the bending direction of the metal stamping is at a certain angle to the rolling direction as much as possible.

3. When the burr surface is used as the outer surface for metal stamping and bending, the workpiece is prone to cracking and scratching;

Solution: Therefore, when bending metal stamping, the burr surface should be used as the inner surface of the metal stamping bending.

4. The radius of the concave die corner is too small, and there are impact marks on the bent part of the metal stamping.

Solution: Polishing the concave mold and increasing the fillet radius of the concave mold can avoidMetal stamping partsScratches.

5. The gap between the convex and concave molds should not be too small, as a small gap can cause thinning and scratching.

Solution: During the stamping process, it is necessary to constantly check the changes in the clearance of the mold.

6. When the depth of the convex mold entering the concave mold is too large, it will cause surface scratches on the parts,

Solution: Therefore, while ensuring that it is not affected by rebound, the depth of the convex mold entering the concave mold should be appropriately reduced.

7. In order to meet the accuracy requirements of the parts, metal stamping and bending dies are often used for bottom pressing. Therefore, during the metal stamping and bending process, the springs, positioning pin holes, support plates, and return holes on the pressing plate will be pressed into indentations, so adjustments should be made.

The above is aboutDongguan Hardware Stamping Manufacturer： http://www.bosiwj.com/mp-12.html I believe you now know how to solve the problem of surface scratches on metal stamping parts that I have introduced to you.

When it comes to bending machines, we have to introduce Dongguan Bosi'sGerman CNC micro bending machineWe can handle material thicknesses between 0.04-1.0mm, with a maximum bending width of 150mm and a minimum bending width of 2.0mm. The accuracy can reach 0.01mm and the angle can reach 0.1 degrees. Welcome to inquire about sample production, we will definitely make the products you need