Tungsten carbide roll has high hardness, and its hardness value with the temperature change is very small, 700 ℃ when the hardness value of high-speed steel 4 times; and the modulus of elasticity, compressive strength, bending strength, thermal conductivity are higher than tool steel more than 1 times. All these properties ensure that the tungsten carbide rolls in the working process than the tool steel rolls much better wear resistance and resistance to deformation, thus ensuring that the roll groove finish and size constancy, which ensures the surface quality of the wire and dimensional accuracy is essential. Due to the high thermal conductivity of tungsten carbide rolls, so the heat dissipation effect is good, so that the surface of the rolls in the high temperature of a shorter period of time, so that the rolls with the cooling water in the high temperature of harmful impurities in a shorter reaction time. Therefore, tungsten carbide rolls are more resistant to corrosion and hot and cold fatigue than tool steel rolls.
Post time: Jul-28-2023
