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Shenzhen WT Hardware and Plastics Limited

contact:Henry yang

Mobile: +86-8923768676

Tel: +86-755-27673590, 23143539
Fax: +86-755-23143536
Add: 5B2, Jiangshi Building, Fuyong, Shenzhen, China
http://www.wt-mold.com/
Email: henry@wt-industry.com
Our main products: Injection Mold, Molding Parts, Die Casting Mold, CNC machining of high quality

             

Best method for preventing heat treatment deformation of dies
May 16, 2017

1. Fair selection. The precision of the complex mold should be selected material good micro-deformation die steel, such as air quenching steel, carbide segregation of severe die steel should be reasonable casting and tempering heat treatment, to the larger and unable to cast steel mold can be solid solution double refinement heat treatment.

2, mold structure design to be fair, thickness do not too disparity, the shape should be symmetrical, for the deformation of larger molds to grasp the law of deformation, reserved processing allowance for large, sophisticated complex molds can be used in combination structure.

3, precision complex molds to be pre heat treatment, eliminating the machining process of residual stress.

4, reasonable choice of heating temperature, control of heating speed, for sophisticated molds can take slow heating, preheating and other balanced heating methods to reduce the mold heat treatment deformation.

5, in the mold to ensure the hardness of the conditions, as far as possible use pre-cooling, grading cooling quenching or temperature quenching process.

6, the precise complex molds, in the case of the premise permits, the use of vacuum heating quenching and quenching after the deep cold treatment.

7, for some sophisticated molds can be used in advance heat treatment, aging heat treatment, quenching and tempering nitriding heat treatment to control the precision of the mold.

8, in repairing mold sand holes, blowhole, wear and other defects, the selection of cold welding machine, such as small thermal impact repair equipment to avoid the process of deformation.


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