Tungsten Carbide Flat Roll PM Sintered Parts

Product Introduction

The roll made of powder metallurgy using tungsten carbide and cobalt as raw materials were born with the development of the metal processing industry after the advent of powder metallurgy technology in 1909. Due to the high speed and high stress of the finishing rolling mill, cast iron rolls and tool steel rolls (poor wear resistance, short groove life, frequent repairs, and loading and unloading, which affect performance and are no longer suitable for finishing rolling production requirements) have been replaced by combined tungsten carbide Rolls are replaced.

How are tungsten carbide rolls produced?

Tungsten carbide rolls are produced by powder metallurgy using tungsten carbide powder and cobalt powder (a small amount of other hard phases or alloying elements can also be added) as raw materials. The above two powders were wetly milled and mixed with a ball mill. After the materials are mixed, they are dried and sieved to become the intermediate product—tungsten carbide mixture. The mixture is pressed and sintered to form a roll blank. The roll blank is ground and polished or re-grooved to become a production roll.

With the high speed of wire rod finishing, people are exploring ways to improve the hardness and strength of tungsten carbide rolls. This is mainly to add a small amount of TaC, NbC, Ni, Cr, Mo, and other elements to the tungsten carbide roll; and to produce better quality rolls by means of hot isostatic pressing, vacuum sintering-low pressure hot isostatic pressing, and heat treatment.

Metal Injection Molding Process

Detection Systems

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