Hardware stamping parts surface abrasion causes and solutions are introduced

When we use metal stamping parts, we will inevitably encounter surface scratches, but what are the reasons inside? What can we do to solve this kind of problem? Here we take a look at several points.

1, for copper, aluminum alloy and other soft materials for continuous operation bending, metal particles or slag is easily attached to the surface of the working part, so that the workpiece appears large scratches, then should carefully analyze the shape of the working part, lubricating oil and other conditions so that the billet is best not to appear particles and slag, and even produce scratches.

2. When the bending direction of metal stamping is parallel to the rolling direction of the material, cracks will occur on the surface of the workpiece, reducing the surface quality of the workpiece. When metal stamping and bending is carried out in more than two parts, it should be ensured that the bending direction of metal stamping and the rolling direction have a certain Angle as far as possible.

3. When the burr surface is used as the outer surface for metal stamping and bending, the parts are easy to produce cracks and scratches; Therefore, when metal stamping and bending, the burr surface should be used as the inner surface of metal stamping and bending.

4, die radius is too small, metal stamping bending parts appear impact marks. Polishing the die and enlarging the radius of the die can avoid the abrasion of the metal stamping and bending parts.

5, the mold gap should not be too small, too small gap will cause thinning scratches. In the stamping process, always check the change of the gap of the mold.

6, punch into the depth of the die is too large will produce parts surface scratches, so in the case of ensuring not affected by rebound, should be appropriate to reduce the punch into the depth of the die.

7, in order to make the parts meet the accuracy requirements often use the metal stamping and bending die at the bottom of the press, the spring on the press plate, positioning pin holes, brackets and return holes will be pressed into indentation when the metal stamping and bending should be adjusted.

Hardware stamping manufacturers concluded that when the metal stamping parts bend the surface, we should know the reasons for it, and there are some solutions, hoping to help you.