1. Stomata.

Causes: the exhaust duct is not smooth; sand moulds and cores are not dry.

Prevention methods: dredging exhaust pipe; adjusting drying process.

2. Shrinkage.

Causes: low holding pressure and short holding time.

Prevention method: Increase the pressure and time of holding pressure.

3. Sanding.

Causes: excessive filling pressure; excessive holding pressure.

Prevention: Reduce filling or holding pressure.

4. Insufficient irrigation.

Cause: Pressure holding time is too short.

Prevention: Increase the holding time.

Fifth, we can't run away.

Reasons: Pressure holding time is too long, the ingate solidification is too long.

Prevention: Reduce the holding time.

This article is organized by Foshan Jinju Qiwei Die Casting Co., Ltd., a die-casting manufacturer. The service hotline of aluminium alloy die-casting is 0757-25500218! Website: http://www.nbmt120.com/.