Chromium Lining Plate Steel Wear-Resistant Wear-Resistant

Product Description

Wear - Resistant Lining Plate

 

1. Definition and Function

 

A wear - resistant lining plate is a kind of protective material that is mainly used to reduce the wear and tear caused by the impact, friction, and abrasion of materials in various industrial equipment and containers. It serves as a shield between the working medium and the inner wall of the equipment, effectively prolonging the service life of the equipment.

 

For example, in a mining crusher, the ores and rocks with high hardness are constantly crushed and rubbed. The wear - resistant lining plate installed inside the crusher can bear the brunt of the impact and abrasion of these materials, preventing the direct damage of the crusher's shell and reducing maintenance costs.

 

2. Materials and Manufacturing Processes

 

• Materials:
  • High - chromium alloy is a common material for wear - resistant lining plates. The high chromium content provides excellent hardness and wear resistance. The chromium forms a stable carbide phase during the solidification process of the alloy, which can resist the abrasion of hard particles. For instance, a typical high - chromium alloy lining plate may have a chromium content of about 20% - 30%.
  • Ceramic - lined composite materials are also widely used. Ceramic materials such as alumina and zirconia have extremely high hardness. They are usually combined with a metal substrate through a special bonding process. The ceramic layer on the surface provides outstanding wear - resistance, while the metal substrate offers good mechanical strength and impact resistance.
• Manufacturing Processes:
  • Casting is a traditional and widely - used manufacturing method. The molten alloy is poured into a pre - made mold according to the required shape and size of the lining plate. During the casting process, strict control of temperature, pouring speed, and cooling rate is necessary to ensure the quality of the casting and the uniformity of the microstructure.
  • For ceramic - lined composite lining plates, the sintering process is crucial. The ceramic powder is first evenly coated on the metal substrate, and then the composite material is sintered at a high temperature. This process allows the ceramic layer to bond firmly with the substrate and gives the lining plate its excellent performance.

 

3. Types and Applications

 

• Types:
  • Flat - type wear - resistant lining plates are simple in structure and are mainly used in places where the impact force is relatively small and the wear is mainly caused by friction, such as the bottom and side walls of material storage bins.
  • Curved - type lining plates are designed to fit the inner wall of cylindrical or conical equipment. They are used in equipment such as ball mills and rotary kilns, where the lining plate needs to adapt to the curved shape of the equipment to ensure good contact and protection.
• Applications:
  • In the mining industry, wear - resistant lining plates are used in crushers, mills, and conveyor systems. In crushers, they can withstand the impact of large - sized ores; in mills, they help to grind ores more efficiently while reducing wear on the equipment body; and in conveyor systems, they protect the conveyor trough from being worn by the transported ores.
  • In the cement industry, rotary kilns and cement mills are equipped with wear - resistant lining plates. The lining plates in rotary kilns can resist the high - temperature abrasion of clinker, and those in cement mills play an important role in the grinding process of cement raw materials.
  • In the power generation industry, the coal - handling system, including coal crushers and coal bunkers, uses wear - resistant lining plates to prevent wear caused by coal with different particle sizes and high - hardness gangue.

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