Research on the Casting Process of a Small Integral Cylinder Head
The casting problems such as porosity,cavity seam and broken core in the process of production of a three-cylinder connected cylinder head are studied.The porosity problem was solved by reducing the cross-sectional area of the bottom injection,re-ducing the pouring temperature and adopting the paint with low gas output and good permeability.The crack problem caused by sand core deformation was solved by low temperature curing technology.The problem of breaking core is solved by pre-filling core sand and designing and making secondary core auxiliary device.Through process improvement,the quality of the product is reduced from 15％scrap rate to less than 5％.
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