How does Manhart (Guangdong) CNC Machine Tool Co., Ltd. handle heat treatment deformation during the machining process of CNC bending machine molds?

In the machining process of CNC bending machine molds, heat treatment deformation is a common problem that requires a series of measures to be taken to deal with and prevent. Here are some suggestions for handling heat treatment deformation:
1. * * Reasonably design the mold structure * *:
-When designing molds, consideration should be given to the possible deformation that may occur during the heat treatment process, and corresponding structural design measures should be taken to reduce the impact of deformation.
-Optimize the rib plate layout of the mold, improve its rigidity, and reduce the risk of heat treatment deformation.
2. * * Choose appropriate heat treatment process * *:
-Select appropriate heat treatment processes based on the material and size of the mold, such as preheating, slow heating, quenching temperature control, etc., to reduce heat treatment deformation.
-For complex molds, vacuum heat treatment or protective atmosphere heat treatment can be considered to reduce deformation caused by oxidation and decarburization.
3. * * Preheating treatment * *:
-Before formal heat treatment, preheating treatment, such as normalizing or quenching and tempering, is carried out to improve the uniformity of the material structure and reduce stress concentration, thereby reducing heat treatment deformation.
4. Quenching cooling control:
-During the quenching process, the cooling speed and selection of cooling medium should be reasonably controlled to avoid deformation caused by too fast or too slow cooling speed.
-By using segmented cooling or graded quenching methods, the temperature gradient is reduced, thermal stress is lowered, and deformation is reduced.
5. * * Tempering treatment * *:
-Tempering treatment after quenching can eliminate the internal stress generated during the quenching process and reduce deformation.
-Select the appropriate tempering temperature and time according to the requirements of the mold to achieve ideal mechanical properties and dimensional stability.
6. * * Compensation processing * *:
-After heat treatment, the mold is subjected to size inspection and appropriate compensation processing, such as grinding, milling, etc., is carried out based on the inspection results to correct dimensional deviations caused by heat treatment deformation.
7. * * Strengthen process control * *:
-Strictly control the temperature, time, atmosphere and other parameters during the heat treatment process to ensure the quality of the heat treatment.
-Regularly maintain and calibrate heat treatment equipment to ensure its accuracy and stability.
8. * * Reasonably arrange production plans * *:
-According to the delivery time and processing cycle of the mold, arrange the production plan reasonably to avoid time delays and processing quality issues during the heat treatment process.
In summary, dealing with the heat treatment deformation of CNC bending machine molds requires multiple aspects such as design, process control, and equipment maintenance. Through reasonable structural design and heat treatment process selection, as well as strict process control and production management, heat treatment deformation can be effectively reduced, and the processing quality and production efficiency of molds can be improved.