1, high wear resistance
The chemical composition of the alloy layer of carbon content of 4~6%, chromium content of 25~30%, the volume fraction of Cr7C3 carbide in the metallographic structure of more than 45%, the macro hardness of HRC56~62, the hardness of chromium carbide is HV1400~1800, higher than the hardness of quartz HV800~1200. Because the carbide is vertically distributed in the wear direction, the wear resistance is more than doubled compared with the cast alloy with the same composition and hardness. The wear resistance of several typical materials is compared as follows:
(1) with low carbon steel; 20~25:
(2) with high manganese steel; 5~10:
(3) with tool steel; 5~10:
(4) with high chromium cast iron; 1.5~2.5:
2, good impact resistance
The bottom layer of the wear-resistant composite steel plate is low carbon steel or low alloy. Stainless steel and other ductile materials, reflecting the advantages of bimetal, wear-resistant layer to wear the wear of the medium, the substrate bears the load of the medium, so it has good impact resistance. Can withstand impact and wear such as high drop hoppers in material handling systems.
3, better heat resistance
The wear layer is recommended to be used under conditions of ≤600℃. If vanadium, molybdenum and other alloys are added to the alloy layer, it can withstand high temperature wear of ≤800℃. The recommended temperature is as follows: ordinary carbon steel substrate is recommended not to be higher than 380℃; Low-alloy heat-resistant steel plate (15CrMo, 12Cr1MoV, etc.) is recommended for use under conditions not higher than 540℃; Heat-resistant stainless steel substrate is recommended for use under conditions not higher than 800 ° C.
4, good corrosion resistance wear-resistant composite steel plate alloy layer contains a high percentage of metal chromium, so it has a certain rust and corrosion resistance. It can be used to prevent coal sticking on occasions such as dropping coal barrel and funnel.
5, strong applicability
The wear-resistant composite steel plate has complete specifications and many varieties, and has become a commodity series. The thickness of the wear-resistant alloy layer is 3~20mm. The thickness of the composite steel plate is 6mm, and the thickness is not limited. The standard wear-resistant composite steel plate can be provided with 1200 or 1450×2000mm, and can also be customized according to the drawing size according to user needs. Wear-resistant composite steel plate is divided into ordinary type, impact resistance type and high temperature type three, order high temperature wear-resistant and impact resistance composite steel plate to explain.
6, convenient processing
Wear-resistant composite steel plate can be cut, levelled, punched, bent and crimped, it can be made into flat plate, arc plate, cone plate, cylinder. The cut composite board can be welded into various engineering structural parts or components. The composite plate can also be heated and pressed into complex shapes with a touch. Wear-resistant composite steel plate can be bolted or welded to the equipment, easy to replace and maintain.
7, high price performance ratio
Although the manufacturing cost of wear-resistant composite steel plate is increased, the service life is increased several times, making the maintenance cost and downtime loss greatly reduced, and the price performance ratio is about 2 to 4 times higher than that of ordinary materials. The greater the amount of material treated, the more serious the equipment wear, the more obvious the economic effect of using wear-resistant composite steel plate.
