Wear-resistant steel bi-metal multi-layer wear-resistant steel is the ordinary low-carbon steel or low alloy steel composite surfacing a certain thickness of high hardness, excellent wear resistance of the wear layer; wear-resistant steel from low carbon steel two parts and wear-resistant alloy layer, the the general total thickness of the wear layer 1/3-1/2, wear-resistant layer thickness is generally 3,4,5,6,8,10,12 mm, etc.; wear-resistant steel specialized equipment processing equipment, open arc, submerged arc welding, weld is divided into: narrow channel (5-8mm), by the wide channel (30-50mm), wear-resistant steel work of the curve (W or S-shaped); the overall performance of the substrate to resist external forces strength, toughness and ductility, wear-resistant layer provides wear resistance to meet the needs of the specified conditions; wear plate wear-resistant alloy layer and the substrate is metallurgically bonded, guaranteed not to fall off, able to withstand greater impact; wear resistant steel plate processing, carbon steel and high-chromium alloy the uniform surface cracks due to the alloy shrinkage ratio, which is a normal phenomenon; wear layer high-chromium alloy chromium content of 20 - 40% also add other alloying elements such as manganese, silicon, molybdenum, niobium, boron carbide content can reach 40-60%, metallurgical carbide fiber distribution; Carbide hardness HV1700-2000 the surface hardness can reach HRC55-62, wear resistance is 15 times more than ordinary steel; wear-resistant steel capable of cutting, bending, welding, etc., can be connected with other structures, a province in the course of the repair site, convenient characteristics; wear-resistant steel is widely used in metallurgy, coal, cement, power, mining, glass, construction machinery and other industries, there is a very high price compared with other materials.