27MnCrB5-2 wear resistant steel plate is composed of low carbon steel plate and alloy wear-resistant layer, and the alloy wear-resistant layer is generally 1/3 ~ 1/2 of the total thickness. When 27MnCrB5-2 wear resistant steel plate is working, the matrix provides comprehensive properties such as strength, toughness and plasticity to resist external forces, and the alloy wear-resistant layer provides wear-resistant properties required by working conditions.
The alloy wear-resistant layer of 27MnCrB5-2 wear resistant steel plate is mainly chromium alloy, and other alloy components such as manganese, molybdenum, niobium and nickel are added. The carbide in the metallographic structure is distributed in the form of fiber, and the fiber direction is perpendicular to the surface. In the 27MnCrB5-2 wear resistant steel plate, the microhardness of carbide can reach over hv1700-2000, and the surface hardness can reach HRC58-62. The alloy carbide has strong properties and high hardness at high temperature. At the same time, 27MnCrB5-2 wear resistant steel plate also has good oxidation resistance and can be used normally within 500 ℃.
