The manufacture of metal molds generally goes through several processes such as forging, cutting, and heat treatment. Several major technological properties of hardware molds:
1. Forgeability:
It has low hot forging deformation resistance, good plasticity, wide forging temperature range, low tendency for forging cracking and cold cracking and precipitation of network carbides.
2. Annealing technology:
The spheroidizing annealing temperature range is wide, the annealing hardness is low and the fluctuation range is small, and the spheroidizing rate is high.
3. Machinability:
The cutting amount is large, the tool loss is low, and the machined surface roughness is low.
4. Oxidation and decarburization sensitivity:
When heated at high temperature, it has good oxidation resistance, slow decarburization, insensitivity to heating medium, and small tendency to pitting.
5. Hardenability:
It has a uniform and high surface hardness after quenching.
6. Hardenability:
After quenching, a deep hardened layer can be obtained, which can be hardened by using a mild quenching medium.
7. Quenching deformation and cracking tendency:
The volume change of conventional quenching is small, the shape is warped, the distortion is slight, and the abnormal deformation tendency is low. Conventional quenching has low cracking sensitivity and is not sensitive to quenching temperature and workpiece shape.
8. Grindability:
The relative loss of the grinding wheel is small, the limit grinding consumption without burns is large, and it is not sensitive to the quality of the grinding wheel and cooling conditions, and does not cause abrasion and cracks in the grinding precision stamping die.
9. Blanking die:
Separation of materials along closed or open contours. Such as blanking dies, punching dies, cutting dies, incision dies, trimming dies, cutting dies, etc.
10. Bending die:
A mold that bends and deforms a sheet blank or other blank along a straight line (bending line) to obtain a certain angle and shape of the workpiece.
11. Deep drawing die:
It is a mold that makes a sheet blank into an open hollow part, or further changes the shape and size of the hollow part.
12. Forming die:
It is a mold in which the blank or semi-finished workpiece is directly copied and formed according to the shape of the convex and concave molds, and the material itself only produces local plastic deformation. Such as bulging die, shrinking die, flaring die, undulating forming die, flanging die, shaping die, etc.
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