Five common problems for die casting and solutions during die casting production

Five common problems for die casting and solutions during die casting production

Die casting is the most widely used of various casting processes, which is characterized by the use of die casting mold cavities to apply high pressure to molten metal. Compared with other metal casting techniques, die casting has a flatter surface, more consistent dimensions, and is less expensive. In the die casting process, there are some common problems that will affect the normal use of the machine and the accuracy of the casting. So what are the problems and what are the solutions? Let's take a look together!

The 5 most common problems in the production process of die casting and their solutions:

1: The material is hard and the tool is easy to wear
Solution: 

Proportion with original materials, without recycled materials, and use gemstone blades specially produced for cemented carbide.

2: The injection head is stuck in the gooseneck
Solution: 

When the die casting equipment is at normal temperature, try to turn the hammer head. If it cannot be turned, replace the cylinder and take out the hammer head. If you want to solve the stuck problem quickly, the best is the refueling pot.

3: Hammer stuck
Solution: 

①. During production, measure the temperature frequently to avoid excessive temperature of the hammer head and cylinder; 

②. Choose high-quality alloy materials without impurities to prevent impurities from sticking to the hammer head.

4: When punching dozens of die casting molds, you can’t punch out, and you have to wait for a few minutes before you can continue to punch.
Solution: 

Check whether there are bright spots on the top of the material head. If the cross-section is all gray, it means that the nozzle is blocked. You can increase the temperature of the nozzle appropriately, and reduce the time of breaking away from the nozzle by 0.1 to 0.2 seconds. Turn it down.

5: Easy to crack when die casting thin-walled products
Solution: 

If this problem occurs, it may be due to material problems or poor die casting mold opening or improper selection of process parameters. Try to control the proportion of waste materials not to exceed 30%, and the mold retention time should not be too long. The time cannot be long, generally 0.5-2s.

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