How to eliminate bubbles in die casting parts?

Bubble

Other name: Air Bubble, Bubbling or Blister

Features: Skin of casting formed gas bulging bubble.

Causes:

1、Mold temperature is too high.

2、The filling speed is too high, the metal flow into the gas too much.

3、Coating gas, excessive amount of unburned, before pouring, the volatile gas enclosed in the surface layer of the casting.

4、The exhaust is not smooth.

5、Premature opening.

6、Alloy smelting temperature is too high.

Elimination Measures:

1、Cooling die to working temperature.

2、Reduce the injection speed, avoid eddy gas inclusion.

3、The small air quantity amount of coating, thin and uniform, then die out.

4、Cleaning and adding overflow tank and exhaust duct.

5、Adjust the die leaving time.

6、Trimming smelting process.

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