Based on the experience with more than 10 years running shell mould casting line and with the application of various resin coated sands,some technical problems of resin coated sands for shell mould castings were discussed.

This paper introduces briefly main technological features and application of shell casting techniques and equipments.

This research analyses the material with experiments,and does some techniques optimization for the crankshaft shell casting,finding the range of the quantity of the trace elements in the ductile iron and adequate temperature of casting;technical standards and the selection of coated sand.

The effects of rare earth on the structure and properties of low CuCrMoNi-alloyed cast iron used for camshafts cast in shell mould with iron shot backing and in green sand mould was compared and investigated.