Wear-resistant steel plate Creusabro 4800

Structural features

Wear-resistant steel plate consists of two parts: low carbon steel plate and alloy wear-resistant layer. The alloy wear-resistant layer is generally 1/3~1/2 of the total thickness. During operation, 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 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 base plate. Through special equipment and an automatic welding process, the high-hardness self-protecting alloy wire is evenly welded to the substrate. The number of composite layers is one to two or even multiple layers. During the composite process, due to the different shrinkage ratios of the alloys, uniform transverse cracks appear. This It is a distinctive feature of wear-resistant steel plates.

The alloy wear-resistant layer is mainly made 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 a fibrous form, and the fiber direction is perpendicular to the surface. The microhardness of carbide can reach above HV1700-2000, and the surface hardness can reach HRC58-62. Alloy carbide has strong stability at high temperatures, maintains high hardness, and also has good oxidation resistance, and can be used normally within 500°C.

The wear-resistant layer is expressed in narrow channels (2.5-3.5mm), wide channels (8-12mm), curves (S, W), etc.; it is mainly made of chromium alloy, while also adding manganese, molybdenum, niobium, nickel, and boron For other alloy components, the carbides in the metallographic structure are distributed in a fibrous form, and the fiber direction is perpendicular to the surface. The carbide content is 40-60%, the microhardness can reach above HV1700, and the surface hardness can reach HRC58-62.

Wear-resistant steel plates are mainly divided into three categories: general-purpose, impact-resistant and high-temperature-resistant types; the total thickness of wear-resistant steel plates can reach a minimum of 5.5 (2.5+3) mm and a maximum of 30 (15+15) mm; wear-resistant steel plates Wear-resistant pipes with a minimum diameter of DN200 can be rolled and processed into wear-resistant elbows, wear-resistant tees, and wear-resistant reducers.

Application range

Wear-resistant steel plates have high wear resistance and good impact resistance. They can be cut, bent, welded, etc. They can be connected to other structures by welding, plug welding, bolting, etc. They are time-saving and convenient during maintenance. They are widely used in metallurgy, coal, cement, electricity, glass, mining, building materials, bricks and tiles and other industries. Compared with other materials, they have a high cost-effectiveness and have been favored by more and more industries and manufacturers.

Performance description

1. Excellent wear resistance The chemical composition of the alloy wear-resistant layer contains 4-5% carbon and 25-30% chromium. The volume fraction of Cr7C3 carbide in its metallographic structure reaches more than 50%, the macroscopic hardness is HRC56-62, and the hardness of chromium carbide is HV1400-1800. Since the carbides are distributed perpendicular to the wear direction, the wear resistance is more than doubled even compared with the casting alloys with the same composition and hardness. The wear resistance comparison with several typical materials is as follows: (1) with low carbon steel; 20-25:1 (2) with cast high chromium cast iron; 1.5-2.5:1

2. Good impact resistance The substrate of the wear-resistant composite steel plate is low carbon steel or low alloy. Tough materials such as stainless steel reflect the superiority of bimetallic materials. The wear-resistant layer resists the wear of the wear medium, and the substrate bears the load of the medium, so it has good impact resistance. It can withstand the impact and wear of high drop hoppers in material conveying systems. 3. The alloy wear-resistant layer with better heat resistance is recommended to be used under the condition of ≤600℃. If vanadium, molybdenum and other alloys are added to the alloy wear-resistant layer, it can withstand high temperature wear of ≤800℃. The recommended operating temperature is as follows: ordinary carbon steel substrate is recommended to be used under the condition of not higher than 380℃; low alloy heat-resistant steel plate (15CrMo, 12Cr1MOV, etc.) substrate is recommended to be used under the condition of not higher than 540℃; heat-resistant stainless steel substrate is recommended to be used under the condition of not higher than 800℃.

4. Good corrosion resistance The alloy layer of wear-resistant composite steel plate contains a high percentage of metallic chromium, so it has certain anti-rust and corrosion resistance. It can be used in occasions such as coal dropping tubes and funnels to prevent coal sticking.

5. Complete varieties and specifications Wear-resistant steel plates have complete specifications and many varieties, and have become a series of commodities. The thickness of the wear-resistant alloy layer is 3 to 20mm. The thinnest thickness of the composite steel plate is 6mm, and the thickness is not limited. Standard wear-resistant steel plates can be provided in 1200 or 3800×12000mm, and can also be customized according to the drawing size according to user needs. Wear-resistant steel plates are now divided into three types: ordinary type, impact-resistant type and high-temperature type. Please specify when ordering high-temperature wear-resistant and impact-resistant composite steel plates.

6. Convenient processing performance Wear-resistant steel plates can be cut, bent or curled, welded and punched, and it can be processed into various parts that ordinary steel plates can be processed. Cut wear-resistant steel plates can be welded into various engineering structures or parts.

7. Functions and features Weldable and good wear resistance.