Process performance of mold
Mold manufacturing generally go through forging, machining, heat treatment, several processes. To ensure the quality of the mold manufacturing, lower production costs, the material should have good malleability, machinability, hardened resistance, hardenability and can grind; also has a small oxidation, decarburization sensitivity and quenching deformation cracking tendencies.
1. Malleability
Forging deformation resistance with a lower, plastic, forging a wide temperature range, forging crack cold cracking and low propensity network carbide precipitation.
2. Annealing of
Ball annealing temperature range, low annealing hardness and small fluctuation range, the ball is high.
3. Machinability
Cutting the amount of large, low-loss tool, low surface roughness.
4. Oxidation, decarburization sensitivity
Antioxidant pregnant when heated to high temperatures can be good, decarbonization slow the heating medium is not sensitive to small pitting tendency.
5. Hardenability
After quenching with a uniform and high surface hardness.
6. Hardenability
After quenching can get deeper hardened layer, using relaxation quenching medium can be hardened.
7. Deformation hardening cracking tendency
Conventional quenching volume change size, shape warping, distortion minor, abnormal deformation tends to lower. Conventional quenching cracking sensitivity is low, and the shape of the workpiece on the quenching temperature-insensitive.
8. Can grind
Wheel relatively small loss, no grinding burn limit large amount of wheel quality and cooling conditions are not sensitive, less prone to injuries mill grinding cracks.
