Industry mold needs attention

Universal testing machine > 1. Note 1: The direction of the post-polishing process of the deep drawing mold should be consistent with the direction of flow of the blank metal. The concave cavity should be reciprocated longitudinally rather than circularly.
2, Note two: When polishing should pay attention to cooling, prevent overheating to reduce the hardness of the mold.
3. Note 3: The shape of the cold extrusion punch should be symmetrical after machining, and the working part must be coaxial, otherwise, the unilateral stress of the punch is easy to break.
4. Note 4: The hardening hardness and the depth of the hardened layer should be properly selected according to the working conditions and material properties of the cold die to prevent early failure.
5, Note 5: Heat treatment should pay attention to full tempering, tempering time is generally more than 1.5 hours, if the tempering time is insufficient, even if the hardness meets the requirements of the case, there will still be an avalanche phenomenon.