Casting Process Design and Quality Improvement of High-power Diesel Engine Cylinder Block
More than 40%of castings of diesel engine cylinder block leaked during production.The analysis showed that the leakage position was between the U-shaped channel core and the tappet core.The structure and technical requirements of castings were analyzed.The casting defect was determined to be slag porosity defect through metallographic detection and numerical simulation analysis.Process optimization measures such as reducing binder dosage,replacing basic coating with mixed coating or graphite-based coating,adjusting the ratio of charge in smelting were proposed.The improved casting leakage rate was reduced to less than 2%,effectively improving the quality of cylinder block products.
NETL
NSTL
万方数据
维普
