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What are the reasons for the scrapping of die-casting molds?

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The die-casting mold has a corresponding life, but this life is related to many factors, so what is the life of the die-casting mold? Let’s understand the reasons for the scrapping of the die-casting mold.

1. Mold design

Try to avoid sharp corners in the mold design, and the positions of holes and slots should be arranged reasonably.

2. Selection of die steel

The selection of die steel must complete the use of heat treatment to eliminate carbide segregation, refine carbide, and uniform structure.

3. Cooling and lubrication

The cooling and lubrication of the mold is to reduce the thermal load of the mold and avoid the mold temperature from being too high. It is usually forced to cool the mold during the intermittent work. This will cause the periodic heating and chilling of the mold to cause thermal fatigue cracks. . Therefore, the mold should be cooled slowly after use, otherwise thermal stress will occur, which will cause the mold to crack and fail.

4. die casting and maintenance

The mold should be fully preheated before die casting. If the preheating temperature is too high, the temperature of the mold is too high during use, the strength is reduced, and plastic deformation is easy to occur, causing the mold surface to collapse; Initiation of cracks.