Process: submerged arc process, open arc process.

C content of wear-resistant layer (%): 3~5.5%.

Cr content (%): 25-40%.

Hardness HRC: 58-65.

Volume fraction of Cr7C3 carbide: more than 50%.

Chemical composition: wear-resistant composite steel plate is a layer or layers of wear-resistant alloy containing a lot of chromium carbide hard particles deposited on the medium and low carbon steel substrate, and some special elements are added to form carbides with special functions.

Microstructure: the volume fraction of Cr7C3 carbide in the metallographic structure of the wear-resistant layer is more than 50%.

Hardness: The surface hardness of wear-resistant alloy varies from HRC56-65 according to the thickness and use of wear-resistant layer, and the maximum micro hardness of chromium carbide is HV1800.

Wear resistance: the laboratory results show that the wear resistance of Wodun wear-resistant composite steel plate is 20 times that of low carbon steel and 8 times that of heat-treated wear-resistant steel. The ASTM-G65A dry sand wear test surface wear and 75% deep wear test data show that it has high wear resistance.

Flatness error: the flatness shall be controlled at 3mn/m.

Thickness error: the thickness of the wear-resistant layer is uniform, and the positive thickness tolerance is 0-0.5mm.

Conventional thickness of submerged arc wear plate mainly includes: 3+3, 4+4, 5+5, 6+4, 6+5, 6+6, 8+5, 8+6, 8+8, 10+5, 10+6, 10+7, 10+8, 10+10, 12+5, 12+6, 12+7, 12+8, 12+10, 12+11, 12+12, 14+6, 14+8, 14+10, 16+6, 16+8, 16+10, 18+6, 18+8, 18+10, 20+6, 20+10, 30+10, 40+10