改进气缸头低压铸件缺陷的分析和对策

Analysis of the Information in the Classfying and Coding Rule of Machine Parts

分析了铝合金气缸头低压铸件的主要缺陷，从铸型工艺上论述缺陷产生的原因和防止措施，并指出用压力铸造取代低压铸造，为提高气缸头铸件质量提供了新的途径。

In this paper,the significance of the classfying and coding rule of machine parts on the GT(Grouping Technology) is expounded.And the information of several common classfying and coding rules have been discussed and analysed from the composition、information resource and decoding function.