Wear-resistant steel plate structure characteristics


Release time:

2021-07-14

Wear-resistant steel plate is a special plate product used exclusively in the case of large-area wear. Commonly used wear-resistant steel plate is a plate product made by superimposing a certain thickness of high hardness, excellent wear resistance alloy wear-resistant layer on the surface of ordinary low carbon steel or low alloy steel with good toughness and plasticity. In addition, there are cast wear-resistant steel plate and alloy quenched wear-resistant steel plate.

Wear-resistant steel plate is a special plate product used exclusively in the case of large-area wear. Commonly used wear-resistant steel plate is a plate product made by superimposing a certain thickness of high hardness, excellent wear resistance alloy wear-resistant layer on the surface of ordinary low carbon steel or low alloy steel with good toughness and plasticity. In addition, there are cast wear-resistant steel plate and alloy quenched wear-resistant steel plate.

Wear-resistant steel plate consists of low carbon steel plate and alloy wear-resistant layer,. Generally 1/3~1/2 of the total thickness. When working. The matrix provides comprehensive properties such as strength, toughness and plasticity to resist external forces,. The alloy wear-resistant layer provides wear-resistant properties that meet the requirements of the specified working conditions.

A metallurgical bond is formed between the alloy wear-resistant layer of the wear-resistant steel plate and the matrix. Specialized equipment and automatic welding technology are used. The high hardness self-protection alloy welding wire is uniformly welded on the matrix. The composite layer is one to two or even multiple layers. In the composite process. Due to the different shrinkage rate of alloy. There will be uniform transverse cracks,. This is a significant feature of the wear-resistant steel plate.

The alloy wear-resistant layer is mainly made of chromium alloy,. Other alloy components such as manganese, molybdenum, niobium and nickel are also added. The carbides in the metallographic organization are distributed in fibers,. The fiber direction is perpendicular to the surface. The microhardness of carbides can reach HV1700-2000 or more,. The surface hardness can reach HRC58-62. The alloy carbide is stable at high temperatures. Maintain high hardness,. Also has good oxidation resistance,. Can be used normally within 500℃.

Wear-resistant steel plate layer is characterized by narrow channel (2.5-3.5 mm), wide channel (8-12 mm) and curve (s, w). Chromium alloy is mainly used. Other alloy components such as manganese, molybdenum, niobium, nickel and boron are also added. The carbides in the metallographic organization are distributed in the fibers,. The fiber direction is perpendicular to the surface. The carbide content is 40-60%,. Microhardness can reach HV1700 or more,. The surface hardness can reach HRC58-62.

Wear-resistant steel plate is mainly divided into three kinds: ordinary type, impact-resistant type and high temperature-resistant type;. The minimum total thickness of wear-resistant steel plate can be up to 5.5(2.5+3)mm,. The maximum thickness can be up to 30(15+15)mm;. Wear-resistant steel plates can be rolled into wear-resistant pipes with a minimum diameter of DN200,. It can be processed into wear-resistant elbow, wear-resistant tee, wear-resistant reducer pipe.

 

 

Key words:

Wear-resistant steel plate


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