40cr Steel Plate, Sales of Shandong 40cr Alloy Steel Plate

Wear Resistant Steel Plate refers to a special type of sheet product designed for large-area wear conditions. Commonly used wear-resistant steel plates are made by applying a wear-resistant alloy layer of high hardness and excellent wear resistance through surfacing on the surface of ordinary low-carbon steel or low-alloy steel with good toughness and plasticity. Additionally, there are cast wear-resistant steel plates and alloy quenched wear-resistant steel plates.

Wear-resistant steel plate is composed of two parts: low-carbon steel plate and an alloy wear-resistant layer, with the alloy wear-resistant layer typically accounting for 1/3 to 1/2 of the total thickness. During operation, the matrix provides the strength, toughness, and plasticity required to resist external forces, while the alloy wear-resistant layer offers the wear resistance necessary for the working conditions.

The wear-resistant steel plate alloy features a metallurgical bond between the wear-resistant layer and the substrate. Using equipment, the high-hardness self-protective alloy wire is evenly welded onto the substrate through an automatic welding process. The composite layers can range from one to two layers, up to multiple layers. During the composite process, due to the different shrinkage ratios of the alloys, uniform transverse cracks appear, which are a distinct characteristic of the wear-resistant steel plate.

The wear-resistant layer of the alloy primarily consists of chrome alloy, supplemented with other alloy components such as manganese, molybdenum, niobium, and nickel. The carbides in the microstructure are fibrous and oriented perpendicular to the surface. The microhardness of the carbides can reach above HV1700-2000, and the surface hardness can reach HRC58-62. The alloy carbides maintain high stability at high temperatures, retaining a high level of hardness, and also exhibit excellent oxidation resistance, ensuring normal operation up to 500°C.