Research on Secondary Spray Coating of Engine APS Cylinder Block
This article focuses on the process of plasma spraying on engine cylinder blocks,analyzes the common pore defects it produces,and formulates pore determination standards for secondary spraying through statistical analysis of pore size,providing a data basis for secondary spraying.Then,theoretical calculations were conducted based on the feasibility of machining the cylinder body dimensions,and a complete process flow for secondary spraying was developed.Actual machining parameters were optimized and adjusted to coordinate the spraying process.Finally,a batch verification plan was developed,and quality confirmation was carried out based on the final surface state of pores,metallography,drawing force,and other aspects of batch processing.The feasibility of the secondary spraying process was ultimately verified.Through actual batch processing,the high success rate of secondary spraying has been proven,providing a complete theoretical basis and validation data for subsequent batch implementation.
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