Patent ID: 8430980
Filing Date: 2013-04-30
Classification: B23K,C21D,C23C,Y10T

Abstract:
1. A method of treating an alloy steel member comprising the steps of: attaching by welding a hard-facing to the member, the hard-facing comprising a weld alloy matrix and hard particulates in the matrix; heating the product to above the austenitizing temperature, quenching the product in an aqueous solution to achieve a martensitic structure, and tempering the product and cooling the product; whereby a hard faced steel member product is provided; characterized in that the hard particles are rounded and substantially evenly sized in the range of about 0.5 mm to about 5 mm and in that the weld matrix alloy is of the same composition as the allow steel member, wherein the steel member comprises an alloy steel chosen from a steel having a composition by weight percent of: carbon less than about 0.5%; manganese less than about 1.2%; silicon less than about 2.0%; nickel less than about 3.0%; chromium less than about 2.5%; molybdenum less than about 1.0%; the balance being iron, incidental ingredients and trace impurities.