Exploration for the process and properties of nitrocarburizing of cast iron;

Study on the Combined Heat-treatment of Nitrocarburizing-quenching Process;

Results indicate that a significant improvement occurs in erosion resistance of nitrocarburized 38CrMoAl steel by introducing RE in nitrocarburizing processes comparing conventional nitrocarburizing processes.

The short service lifetime of dies is mainly due to tiny plastic deformation of die cav- ity and poor surface wear resistance,which can be effectively improved by tufftriding, which under conditions of ensuring strength and toughness of matrix,increases the ser- vice lifetime by a factor of 1.

The soft nitriding process with C2H5OH+NH3+CCl4 (catalyst) was used for nodular iron crankshaft.

salt-based liquid soft nitriding is a new technique for chemical heat-treatment at an angle of environmental protection.

Research and Application of a New Non-polluting Salt Bath Nitrocarburising Process;

A process of a Non-Polluting Salt Bath Nitrocarburising for Treating Cylinder Liners of a High Power Locometive;

The effect of RE elements on nitrocarburising process was studied.

A Study on the Technology of Rare Earth Catalyzed Carbonitriding for Crankshaft Made of Ductile Iron;

Research shown that rare earth can faciliate the carbonitriding rate greatly,and increase case hardness,espically that of the diffusion layer,thus decrease hardness gradient,The structure is consistent,carbid and nitridate in diffusion layer are dispersed.

Research shown that Rare Earth can faciliate the carbonitriding rate greatly,and increase case hardnaas,espically that of the diffusion layer,thus decrease hardness gradient.