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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.jjqw.com/.