15 Problems in the Process of Auto Mould Maintenance (PART4)

Scrap bounce

Improper clearance,punch entry amount,material or SPM and many other factors may lead to scrap bounce.

1.       The sharpness of cutting edge.The radius of cutting block will affect scrap diacharge.For relatively thin stainless steel,sheared punch should be adopted.

2.       Regular scrap should be shaped more complicated.Concave-convex sheer angle should be made on cutting block of die.

3.       Proper clearance is very important.

4.       The entry amount of punch into die should be increased.

5.       Check if there is greasy dirt on material.

6.       Adjust SPM.

7.       Demagnetized punch,insert and material.