Chemical Composition

Structural features of wear-resistant steel plate:

The wear-resistant steel plate is composed of a low-carbon steel plate and an alloy wear-resistant layer. The alloy wear-resistant layer is generally 1/3~1/2 of the total thickness. When working, the matrix provides comprehensive properties such as strength, toughness and plasticity against external forces, and the alloy wear-resistant layer provides wear-resistant properties that meet the requirements of specified working conditions.
There is a metallurgical bond between the wear-resistant steel plate alloy wear-resistant layer and the substrate. Through special equipment and automatic welding process, the high-hardness self-protected alloy welding wire is uniformly welded on the substrate, and the number of composite layers is one to two or even multiple layers. During the composite process, due to the different shrinkage ratio of the alloy, uniform transverse cracks appear. It is a distinctive feature of wear-resistant steel plate.
The alloy wear-resistant layer is mainly composed of chromium alloy, and other alloy components such as manganese, molybdenum, niobium, and nickel are also added. The carbides in the metallographic structure are distributed in fibers, and the fiber direction is perpendicular to the surface. The microhardness of carbide can reach HV1700-2000 or more, and the surface hardness can reach HRC58-62. Alloy carbide has strong stability at high temperature, maintains high hardness, and also has good oxidation resistance, and can be used normally within 500 ℃.
The wear-resistant layer has a narrow channel (2.5-3.5mm), a wide channel (8-12mm), a curve (S, W), etc.; it is mainly composed of chromium alloys, and manganese, molybdenum, niobium, nickel, boron are also added. and other alloy components, the carbides in the metallographic structure are distributed in fibers, and the fiber direction is perpendicular to the surface. The carbide content is 40-60%, the microhardness can reach HV1700 or more, and the surface hardness can reach HRC58-62.
Wear-resistant steel plates are mainly divided into three types: general-purpose, impact-resistant and high-temperature-resistant; the total thickness of wear-resistant steel plates can reach a minimum of 5.5 (2.5+3) mm and a maximum thickness of 30 (15+15) mm; wear-resistant steel plates It can roll wear-resistant pipes with a minimum diameter of DN200, and can be processed into wear-resistant elbows, wear-resistant tees, and wear-resistant reducing pipes.

Application range:

Wear-resistant steel plate has high wear resistance and good impact performance. It can be cut, bent, welded, etc., and can be connected to other structures by welding, plug welding, bolt connection, etc., which saves time in the process of repairing the site. It is widely used in metallurgy, coal, cement, electric power, glass, mining, building materials, brick and tile and other industries. Compared with other materials, it has a high cost performance and has been favored by more and more industries and manufacturers. .
 
Comparison of domestic and foreign brands:

NM360 corresponds to foreign standards and grades JFE:NK-EH360/SUMIHARD:K340.

NM400 corresponds to foreign standards and grades JFE:NK-EH400/SUMIHARD:K400/SSAB:HARDOX400/DILLDUR:400V.

NM450 corresponds to foreign standards and grades JFE:NK-EH450/HARDOX450/DILLDUR:450V.

NM360L, WNM360A, WNM360B, WNM360C, WNM360D, WNM360E, WNM400A, WNM400B, WNM400C, WNM400D, WNM400E, WNM450A, WNM450B, WNM450C, WNM500A, WNM500B, WNM500C, 1E0682, 1E0653, 1E1839, and the like.

General wear-resistant steel plate grades are: WNM360A, WNM360B, WNM360C, WNM400A, WNM400B, WNM400C.

The grades of super wear-resistant steel plates are: WNM450A, WNM450B, WNM450C, WNM500A, WNM500B, WNM500C.

High toughness wear-resistant steel plates include: WNM360D, WNM360E, WNM400D, WNM400E.

High wear-resistant steel plate with welding performance: WNM360L.