In order to eliminate the high content of ferrite structure in the outer layer with depth of 1 mm of the chilled cast iron camshaft produced in shell mould,an experiment with adding metal antimony into iron melt was conducted.

The "black line" defect found on chilled cast iron camshafts was analyzed metallographically and found that the microstructure of defect zone consisted of pearlitic matrix and D-type graphite.

In room temperature,under load and continuous lubrication condition, malleable iron,wear resistant iron,naduar iron,chilled iron with 45 # steel can be employed;chilled with wear resistant iron;chilled with chilled iron comparative testing research friction-wear characteristics of chilled iron.

Arc welding power supply in cast iron cold welding;

The paper describes about the turning technology of the chilled cast iron calender roll for the paper machinery, introduces the cutting tool material, cutter geometric parameter, cutting value and cutting result, explains the selecting principle of cutter date and the analysis of experimental result.

The camshaft with excellent wear resistance was obtained by using the chilled cast iron with composition of 3.

The effect of niobium on cast iron and microstructure and properties of niobium－ containing cast iron was described including the morphology of niobium existing in cast iron,influence of niobium on structure and properties of gray iron,supercooled gray iron and chilled cast iron.