Tungsten carbide roller rings installation requirements

When the tungsten carbide roller ring is installed, the cone sleeve and the inner hole of the roller ring must be properly matched, not too tight or loose.  When the rolling temperature rises, the thermal expansion coefficient of the carbide roll ring is very small, while that of the steel cone sleeve is large. The thermal expansion coefficient of the steel body is about twice that of the carbide. The inner hole of the roll ring will be affected by the tension caused by the thermal expansion of the steel sleeve, so the assembly between the two needs strict and appropriate amount of fit.  In high-speed wire rolling production, the experience shows that the best fit between roller ring and cone sleeve is 0.01 ~ 0.03mm.  

tungsten carbide roller ring used on the stretch reducing mill for bars, thread steel bars and common wire with the durability 10 to 20 times higher compared to common steel roller. The surface quality and the steel bar size accuracy are greatly improved. The cemented carbide roller reduces effectively the production cost and improves the quality.