1. The influence of stamping process and die design and measures to increase die life
(1) The influence of raw materials for cold stamping. Raw material thickness tolerance does not meet the requirements, material performance fluctuations, poor surface quality and dirty, etc.
A. The grade, thickness and surface quality of the raw materials should be strictly checked before stamping;
B. Ensure the surface quality and cleanliness of the material.
(2) The influence of layout and edge
The layout method and the overlap value have a great influence on the life of the mold. Unnecessary reciprocating feeding layout and too small overlap value are often important reasons for the rapid wear of the mold and the damage of the convex and concave molds.
(3) The influence of mold guiding structure and guiding accuracy
Necessary and reliable guidance is extremely effective for reducing the wear of working parts and avoiding the damage of the convex and concave molds.
(4) The influence of mold geometric parameters
The shape, gap and fillet radius of the convex and concave molds not only have a great influence on the forming of stamping parts, but also have a great influence on the wear of the mold
2. The influence of the material of the mold: The influence of the material properties of the mold and the quality of heat treatment on the life of the mold is the most important factor in the life of the mold.
3. The influence of mold thermal processing and surface strengthening
4. The influence of mold processing technology: The surface roughness of the mold after mold processing has a great impact on the life of the mold, so the processing technology should be selected reasonably according to the condition of the part.
5. The influence of the accuracy and rigidity of the press
6. The impact of mold use, maintenance and maintenance
The correct use, maintenance and storage of molds are important aspects to improve mold life. It includes the correct installation and adjustment of the mold; keeping the mold clean and reasonable lubrication; prevent misfeeding and double material; strictly control the depth of the punch into the concave mold, and control the bottom dead center position of the upper mold in the process of correcting bending and shaping ; make grinding, polishing regularly and timely, etc.