Wear-resistant steel plate

Wear-resistant steel plates consist of a low-carbon steel plate and an alloy wear-resistant layer, with the alloy wear-resistant layer generally comprising 1/3 to 1/2 of the total thickness. During operation, the base material provides comprehensive properties such as strength, toughness, and ductility to resist external forces, while the alloy wear-resistant layer provides wear resistance tailored to the specific operating conditions.
The alloy wear-resistant layer and the base material are metallurgically bonded. Using specialized equipment and an automated welding process, high-hardness, self-shielding alloy wire is uniformly welded to the base material. The composite layer can be one, two, or even multiple layers. Due to varying alloy shrinkage ratios, uniform transverse cracks develop during the lamination process, a hallmark of wear-resistant steel plates.
The alloy wear-resistant layer is primarily composed of chromium alloy, with other alloying elements such as manganese, molybdenum, niobium, and nickel added. The carbides in the metallographic structure are fibrous, with the fibers oriented perpendicular to the surface. The carbide microhardness can reach over HV 1700-2000, and the surface hardness can reach HRC 58-62. Alloy carbides are highly stable at high temperatures, maintaining high hardness and excellent oxidation resistance, allowing for full operational performance within temperatures up to 500°C.
The wear-resistant layer can appear in narrow (2.5-3.5mm) or wide (8-12mm) patterns, as well as curved (S and W) patterns. Primarily composed of chromium alloys, these alloys also contain manganese, molybdenum, niobium, nickel, and boron. The carbides are distributed in a fibrous pattern in the metallographic structure, with the fibers running perpendicular to the surface. With a carbide content of 40-60%, the microhardness can reach over HV1700, and the surface hardness can reach HRC58-62. Wear-resistant steel plates are mainly divided into three categories: general-purpose, impact-resistant and high-temperature resistant. The total thickness of wear-resistant steel plates can be as small as 5.5 (2.5+3) mm and as thick as 30 (15+15) mm. Wear-resistant steel plates can be rolled into wear-resistant pipes with a minimum diameter of DN200, and can be processed into wear-resistant elbows, wear-resistant tees and wear-resistant reducers.