Chromium carbide overlay bimetal wear resistant alloy steel plate from zibo QS are two-layer metal materials composed of two different metals - steel and wear resistant alloy steel plates are firmly interconnected, it is a unified integral bimetal layer with different functions, they are called - the base layer and the sediment layer. The base layer bears mechanical loads and the deposited layer has high wear resistance and protection. The bimetal SWIP (hard panel, composite panel, cover panel) is a panel which can be based on ordinary low carbon steel or heat resistant steel. A special wear-resistant coating is applied to the substrate with the aid of the robot powder coating.
Characteristics of chromium carbide overlay bimetal wear resistant alloy steel plate are as follows:
1, high wear resistance
The chemical composition of the alloy layer has a carbon content of 4 to 5%, a chromium content of 25 to 30%, a volume fraction of Cr7C3 carbide in the metallographic structure of more than 50%, a microhardness of HRC of 56 to 62, and a hardness of chromium carbide of HV1400～1800, higher than the hardness of quartz in sandstone HV800～1200. Since the carbide is dispersed vertically in the direction of wear, the wear resistance is more than doubled even when compared with the forged alloy of the same composition and hardness. The wear resistance of several typical data is as follows:
(1) with low carbon steel; 20 ~ 25: 1
(2) with high manganese steel; 5 ~ 10:1
(3) with tool steel; 5 ~ 10: 1
(4) with as-cast high-chromium cast iron; 1.5 to 2.5:1
2, outstanding impact resistance
Surfacing and wear-resistant composite steel sheets exhibit the superiority of bimetals. The wear-resistant layer resists the wear of the wear medium, and the substrate receives the load of the medium, so it has outstanding impact resistance.
3, better heat resistance
The wear layer is recommended for use under ≤600 °C. If alloys such as vanadium and molybdenum are added to the alloy layer, high temperature wear of ≤800 °C can be accepted.
The recommended application temperature is as follows:
The general carbon steel substrate is recommended to be used no higher than 480 °C;
Low alloy heat resistance (15CrMo, 12Cr1MoV, etc.) Substrate recommendation is not higher than 540 °C
4, better corrosion resistance
The alloy layer of the surfacing wear-resistant composite steel sheet contains a high percentage of metal chromium, so it has a certain rust and corrosion resistance.
5, high quotation performance ratio
Surfacing and wear-resistant composite steel sheets have a high performance quotation ratio. Compared with the high manganese steel head, the service life can be improved by more than five times, which greatly reduces the repair cost and the downtime loss. Therefore, the performance quotation ratio is 2 to 4 times that of the high data.