Plasma Cladding of Ni60-SiC Cermet Coating on Hot Forging Die

In order to satisfy performance and long life requirements for hot forging die, Ni60-SiC cermet coating was prepared on the high speed steel W
₆
M0
₅
Cr
₄
V
₂
by plasma cladding technology. Metallurgical bonding coating with enough bonding strength was obtained after optimizing the cladding parameters. The clad coating composition, microstructure, microhardness and thermal physical parameters were analyzed by X-ray diffractometer (XRD), optical microscopy (OPM), microhardness tester, laser thermal constant tester and dynamic thermo-mechanical analysis. The experimental results show that Ni60-SiC cermet coating can greatly improve the hardness of hot forging die surface, and reduce the thermal stress of hot forging die surface. Cladding coating has a very good performance of thermal properties.