The Shell Molding Process Study for Mass Production of Single-Cylinder Diesel Engine Crankshaft

Crankshaft is a key transmission part in single-cylinder diesel engine, but its mass casting production is a problem. Based on the traditional shell molding process of ductile iron castings, this study did lots of techniques optimization for the crankshaft castings of single-cylinder diesel engine. Through increasing the multi-block or a combination of chill iron at sector-plate and upper spindle neck, increasing the pressure head of blind risers and the cross section of sprue, improving the fill compaction of iron pills, and other improvements, produces qualified ductile iron crankshaft castings without or almost without the shrinkage and other casting defects.