Abstract

This paper mainly does a research on the secondary dendrite arm spacing of the partition and the adjacent part in the same engine cylinder heads and the engine cylinder heads which passed the reliability tests under the same production condition. According to the analysis of the test’s conclusion, it proves that the casting process of the cylinder heads can satisfy the requirement of the design performance of the engine cylinder heads partition. It also analyses and judges the rationality of casting process by comparing the relationship between the secondary dendrite arm spacing and the mechanical property. The essay also offers some references on the standard of the secondary dendrite arm spacing of the partition for the design of the engine cylinder heads.

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