The Reason Of Jumping Slug And Improvement Actions On Stamping Products

Stamping is a kind of pressure processing method which can be used to punch the material on the press to make the separation or plastic deformation at normal temperature.With the development of manufacturing technology,to improve the production efficiency,progressive stamping die is increasingly applied to stamping production.It also brings some problems different from traditional stamping,slug jumpings one of them,slug is the metal scrap occurs during high speed stamping production by using the progressive die,sometimes it doesn't drop from the discharge hole of the die,instead it leaves on die plates or attached to the punch inserts,also known as scrap rising or slug jumping.If this problem could be solved,productivity will be improved.Slug jumping can easily cause production problems with higher and higher speed of stamping,seriously affect the appearance quality of stamping products,sometimes will affect the life of the die parts,as well as affecting the accuracy of the die,greatly affect the stamping production efficiency.Completely prevent slug jumping,it is good to improve the quality of the products,is good to keeps month stamping production,to ensure the entire production lines successfully assembled and debugged.Through the summary on the product quality and the frequency of occurrence,the main reasons which cause dent defect on products were fined out.In this paper,through the testing on the structure of raw materials,and mechanical properties,to identify the problem of raw materials,put forward the improvement requirements as well.Find out the process problems by the die structure and process analysis,as well as the die design changes,change cutting profile to prevent the slug jumping.Improve the production process by installing metal chip sensor,adding the suction device,optimizing stamping oil feeding,adjusting punching speed and so on.Thereby reduce product defect rate,improve product quality in production.Increase the production efficiency of the stamping die after solving this kind of problem.