How to eliminate abrade in die casting parts?

Defects in die castings: #abrade

other name: #tension, stretchmark, #mould sticing mark, #drags

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Features: along the direction of the release, due to metal adhesion, the mold manufacturing slope is too small, resulting in the surface of the casting strain marks, serious when it becomes pulled surface.

Causes：

1 . the casting angle of core and mold wall is too small or inverted.

2. core, wall pressure scars.

3. alloy adhesion mold.

4 . casting out deviation or core axis deviation.

5. the surface of the wall is rough.

6. paint often can not be sprayed.

7. the content of iron in aluminum alloy is less than 0.6%.

So how to eliminate it?

Elimination measures :

1. Adjust the mold to ensure the manufacturing slope.
2. light indentation.
3. reasonable design of gating system to avoid metal flow around the core, wall, and appropriately reduce the filling speed.
4. Fix the die structure.
5. polished surface.
6. paint dosage is thin and even, can not leak spraying paint.
7. appropriate increase in iron content to 0.6~0.8%.

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