YG15 Three dimensional carbide rolls tungsten carbide roller rings use for cold milling steel bar

In order to solve the problems existing in alloy tool steel and cemented carbide roll materials used in the production of threaded steel wires, carbide GW30, which is between alloy tool steel and cemented carbide, was developed. After forging, machining and heat treatment, the "bridging" phenomenon of carbides in the alloy is weakened, and the material's bending strength and impact toughness reach 2672 MPa and 18.0 J/cm2 respectively, which can prevent early brittle failure of the roll. At the same time, the wear resistance of the hard phase in the cemented carbide was fully utilized. Under the condition of maintaining the strength and toughness of the roll, the surface of the roll was treated with surface boronization, so that the boronization layer was firmly combined with the steel matrix. The microstructure and properties tend to be consistent, further improving the wear resistance of the alloy. Industrial test results show that the service life of the roll is more than ten times that of alloy tool steel, and the economic benefits are significant.