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Die casting of aluminum alloy parts

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Causes and solutions of cracks in [aluminum alloy die casting products]

* : * : admin * : 2022/06/13 14:09:29 * : 238
The main causes of cracks in aluminum alloy die-casting products are as follows:
① The content of iron in aluminum alloy is too high or the content of silicon is too low.
② Die casting die retention time is too short, and the time to maintain pressure is too short.
③ Excessive local packing force of the die causes uneven stress of die casting during ejection
How to solve this problem of aluminum alloy die-casting products?
① Properly control the alloy composition. In some cases, pure aluminum ingots can be added to the alloy to reduce the magnesium content in the alloy; Or adding Al Si master alloy to the alloy to increase the silicon content
② Raise the temperature of die casting die; Change the structure of the casting, adjust the core pulling mechanism or even the force on the push rod
③ Increase the inclination of drawing die, and use strong release agent locally
④ Increase the mold retention time and pressure holding time of die-casting die