Tungsten Carbide Hot/Cold Wire Forming Rolling Mill Roll

WC roll rings are subjected to high temperature, rolling stress, thermal corrosion and impact load in the hot rolling process. Compared with WC roll rings produced abroad, there are still some gaps in the purity of raw materials, processing technology and performance indexes of roll rings manufactured in China, and the wear resistance of rolls in use is poor and the roll rings are prone to breakage. Based on the ordinary carbide roller ring material, Lubrication GradientMaterial (LGM for short) is used to develop the gradient material LGM roller ring.
The technology is to add sulfur and oxygen to the ordinary carbide material to form stable gradient metal oxides and metal sulfides (Co3O4 and CoS, respectively) on the surface of the metal base material. The industrial test of LGM roll ring shows that the sulfide and oxide in the gradient material can reduce the friction coefficient during rolling, significantly improve the lubrication performance of the roll ring under high temperature and large rolling force, reduce the generation of transverse cracks, and the service life of the roll ring is 1.5 times that of ordinary carbide roll ring, and reduce the amount of resharpening and roll change. The service life of the roller ring is 1.5 times longer than that of ordinary carbide roller ring, and it can reduce the amount of grinding and the number of roller changes, which has significant economic benefits.