Stål med lavt kulstofindhold og cementeret karbidsliddel

摘要

The present disclosure relates to a wear part having high wear resistance and strength and a method of making the same. The wear part is composed of a compound body of cemented carbide particles cast with a low-carbon steel alloy. The low-carbon steel alloy has a carbon content corresponding to a carbon equivalent Ceq=wt%C+0.3(wt%Si+wt%P) of about 0.1 to about 1.5 weight percent. In another embodiment the wear part could include a body with a plurality of inserts of cemented carbide particles cast into a low-carbon steel alloy disposed in the body. A method of forming a high wear resistant, high strength wear part includes the steps of forming a plurality of cemented carbide inserts by encapsulating cemented carbide particles with a molten low-carbon steel alloy to cast a matrix of cemented carbide particles and low-carbon steel alloy, the low-carbon steel alloy having a carbon content of and about 1-1.5 weight percent. Each of the plurality of cemented carbide inserts are coated with at least one layer of oxidation protection/chemical resistant material. The plurality of inserts are directly fixed onto a mold corresponding to the shape of the wear part. The cemented carbide inserts are then encapsulated with the molten low- carbon steel alloy to cast the cemented carbide inserts with the low-carbon steel alloy.