For the production of precision stamping parts, steel raw materials if the import of stainless steel material, the stamping out of the precision hardware, often appear spot injury, crush, scratch and other appearance defects.When appearing this kind of circumstance at the same time, add to punch machine vacuum cleaner, expiratory mouth is handled, but the effect is not ideal.

There are many ways to deal with this situation:

1, add cover protective film, stick on the material, when the supplier is required to buy materials, igner metal tube manufacturers products processing without refueling or adding water, production is best to let the product one by one, feeding knife mouth overlap easy to crush, collision!Cost is higher, can consider.

2. If not, try changing different raw materials. The performance of imported SUS and domestic SUS is sometimes quite different.The performance of different domestic suppliers is also different, but in order to ensure adequate performance, cost control is also a way to solve the problem!

3, add appropriate amount of punching shear oil,(to lubricate the punch, shear mouth to prevent waste debris) regularly clean the mold, timely grinding the punch, keep sharp, reduce the generation of debris is also an effective method!Mold finish must be good, zhejiang textile machinery parts processing with a brush to clean the surface of the mold, often clean the surface of the mold and the work table, can not have iron and other particle impurities in the material or mold surface caused by crushing, but the production efficiency is reduced. Relative to the scrap rate, is acceptable!