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Li D.,Anhui University of Technology | Li M.,Anhui University of Technology | Hong H.,Anhui University of Technology | Gao H.,Anhui Taier Heavy Industry Co. | Wang G.,Anhui Taier Heavy Industry Co.
Hanjie Xuebao/Transactions of the China Welding Institution | Year: 2011

The effect of addition of 1% CeO 2 on the microstructure and wear resistance of high chromium cast iron coating produced by plasma arc cladding process was investigated by means of optical microscope (OM), scanning electron microscope (SEM), X-rays diffraction (XRD) and sliding wear testing. The results show that the phases composition of the alloy coating compared with the Fe-iron coating was not changed, both consisted of γ-(Ni, Fe) solid solution with a face-centered cubic lattice and M 7C 3(M=Cr, Fe, Mo) carbides with a hexagonal structure. Heterogeneous nucleation of the alloy coating modified with rare earth oxide CeO 2 that leads to the microstructure refinement and restrains the growth of carbides. And it changes the crystal growth direction of γ-(Fe, Ni)solid solution from both {111} and {002} to single {002}. Meanwhile, the rare earth oxides homogeneously distribute in eutectic microstructure, thus improving the microhardness and wear resistance of the coating.

Li D.-K.,Anhui University of Technology | Li M.-X.,Anhui University of Technology | Hong H.-F.,Anhui University of Technology | Gao H.-H.,Anhui Taier Heavy Industry Co. | And 2 more authors.
Jinshu Rechuli/Heat Treatment of Metals | Year: 2011

Fe-based coating with high carbon and chromium content was prepared by plasma arc. The microstructure of the coating was investigated by OM, SEM and XRD. The microhardness distribution of the coating was tested by the tester, and the wear resistance of the coating was compared with the high chromium cast iron. The results indicate that the hyperutectic structure of the coating consists of carbides (M7C3) with orthogonal structure and (Fe, Ni) solid solution with fee structure and microhardness of the coating is about 650-850 HV0.2. And its wear resistance is higher than that of high chromium cast iron.

Anhui Taier Heavy Industry Co. | Date: 2014-02-04

Transmission shafts other than for land vehicles; shaft couplings for machines; jacks machines, namely, power jacks; bearings for transmission shafts, being parts of machines; machine wheelwork namely, gears for machines; blades being parts of machines; tools being parts of machines, namely, tool bits for machines, taps; rack and pinion power jacks; gears, other than for land vehicles, namely, gears for machines; reduction gears other than for land vehicles, namely, gears for machines.

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