Transactions of Materials and Heat Treatment

Title：Experimental research on laser cladding cermet on hot forging die surface

Authors： WANG Hua-chang ZHENG Chun-guang TANG Yu-xi ZHANG Zhong-sheng(Department of Material Science and Engineering Wuhan University of Technology Wuhan 430070 China)

Unit：

KeyWords： hot forging die laser cladding surface strengthening microstructure

ClassificationCode：TG174.4

year,vol(issue):pagenumber：2008,33(4):108-111

Abstract：

For preparing the molding chamber surface strengthening coating in accordance with the properties of forging die,the cladding of Ni60/Ni-Cr-Cr3C2 on the surface of W6Mo5Cr4V2 steel was studied,mainly including the component composing of the powder,various laser process parameters and the phase composition of clad layers,microstrueture and the distribution of micro-rigidity.The results show that using 50%∶50% Ni60/Ni-CrCr3C2 as cladding material,the laser power P=1.7 kW,scanning velocity V=4 mm·s-1,spot diameter D=3 mm,cladding thickness T=0.6 mm as the laser cladding process,the laser coating with fining microstructure and higher micro hardness can be obtained.The experience shows that laser cladding cermet is one of prospect methods for preparing molding chamber surface strengthening coating.

Funds：

国家自然科学基金资助项目(50675165)

Reference：

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