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一、问题的提出及试验目的采用合金铸铁、椭圆靠模加工、表面喷涂钼合金处理的240单体铸造活塞环经过几年的试验和实际装车运行考核,证明性能良好,寿命较高,于1979年通过部级鉴定,现已正式投入批量生产。在正式批量生产中,如何保证一批批生产的活塞环具有符合技术条件规定的质量水平,即保证一批批活塞环有良好的在高水平上的复现性,这是一个提高产品成品率,保证产品质量优良的重要问题。内燃机用活塞环具有十分简单的外形,
First, the question raised and test purposes The use of alloy cast iron, oval by die processing, surface spraying molybdenum alloy processing 240 single-piece casting piston ring after several years of testing and actual loading operation assessment to prove good performance, high life expectancy at In 1979 through ministerial identification, is now officially put into mass production. In the formal mass production, how to ensure that a batch of batch production of piston rings meet the technical requirements of the quality level, that is, to ensure that a batch of piston rings have a good high level of reproducibility, which is an increase of product yield , To ensure that the quality of the product an important issue. The internal combustion engine piston ring has a very simple shape,