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.

• 

  Specification and Application of Die-Casting Aluminum Alloy A360

  Aluminum alloy A360 is an American standard aluminum ingot. Aluminum content: 88 (%), cast aluminum alloy grade: A360Material compositionMaterial compositionSiFeCuMnMgNiZnSnTiRemainAluminum alloy A360...
• 

  What Are the Reasons for Surface Blackening of Aluminum Castings?

  I. The importance of aluminum castingsWith the improvement of aluminum alloy casting technology, most of the aluminum castings are metal mold castings and shell mold precision castings. The workpiece ...
• 

  How to Better Set the Parting Surface for the Die Cast Aluminium Alloy?

  Ⅰ. Parting surface of the die casting moldDie-casting aluminum alloy must use die-casting molds. We all know that die-casting molds divide into movable molds and fixed molds. The fixed mold is a lock...