In the production process of thermal power forgings, the application of wear-resistant coating is of great significance for improving product quality and prolonging service life. Wear-resistant coatings can reduce wear, reduce noise, improve corrosion resistance, etc., thereby improving the operating efficiency and safety of equipment. In recent years, with the continuous development of science and technology, new wear-resistant coatings continue to emerge, bringing more choices and possibilities for the production of thermal power forgings. This paper will introduce and analyze the new wear-resistant coating and its application in the production of thermal power forgings.
Classification of wear resistant coatings
Wear-resistant coatings are mainly divided into metal coatings, ceramic coatings and polymer coatings.
Metal coating: Metal coating is metal or alloy as raw materials, through spraying, electroplating, thermal spraying and other ways to form a layer of metal film on the surface of the workpiece. Metal coating has high hardness and wear resistance, suitable for high temperature, high pressure, high speed and other harsh working environment.
Ceramic coating: Ceramic coating is a ceramic material as a raw material, through spraying, thermal spraying, chemical vapor deposition and other ways to form a layer of ceramic film on the surface of the workpiece. Ceramic coatings have extremely high hardness and wear resistance, and are suitable for severe wear situations.
Polymer coating: Polymer coating is a polymer compound as a raw material, through spraying, brushing, dipping and other ways to form a high molecular film on the surface of the workpiece. The polymer coating has good toughness and corrosion resistance, and is suitable for corrosive environment.
In recent years, with the continuous development of science and technology, new wear-resistant coatings continue to emerge, bringing more choices and possibilities for the production of thermal power forgings. Two new wear-resistant coatings are described below:
Nanocarbon coating: Nanocarbon coating is a new type of wear-resistant coating using carbon nanotubes or nanographene as raw materials. Nano carbon coating has high hardness, wear resistance and lubricity, which is suitable for high temperature, high pressure, high speed and other harsh working environment. In addition, the nano-carbon coating also has good electrical conductivity and thermal stability, which can be used to prepare multifunctional coatings.
Hastelloy coating: Hastelloy coating is a new type of wear-resistant coating using Hastelloy as raw material. Hastelloy is a kind of alloy material with excellent corrosion resistance and oxidation resistance, suitable for high temperature, high pressure, strong corrosion and other harsh working environment. Hastelloy coating has high hardness and wear resistance, which can effectively resist wear and corrosion and extend the service life of equipment.
The application of wear-resistant coating in the production of thermal power forgings is mainly reflected in the following aspects:
Reduce wear: wear-resistant coating can reduce the wear of the workpiece surface and improve the service life of the workpiece. For example, spraying wear-resistant coating on the bearing surface of thermal power forgings can effectively reduce the wear of bearings and improve the service life of bearings.
Reduce noise: wear-resistant coating can reduce the friction coefficient of the workpiece surface and reduce the generation of noise. For example, spraying wear-resistant coating on the gear surface of thermal power forgings can effectively reduce the noise of gear and improve the operating efficiency of equipment.
Improve corrosion resistance: wear-resistant coating can improve the corrosion resistance of the workpiece and reduce corrosion damage. For example, the corrosion resistant coating sprayed on the surface of the valve of thermal power forgings can effectively resist the erosion of corrosive media and extend the service life of the valve.
Multi-functional applications: Some new wear-resistant coatings also have multiple functions, such as conduction, heat conduction, lubrication, etc. These multifunctional coatings can meet the needs of different working environments and improve the overall performance of the equipment. For example, the preparation of nano carbon coating on the surface of thermal power forgings can not only improve the wear resistance of the workpiece, but also achieve the functions of conduction and lubrication.
This paper introduces a new wear-resistant coating and its application in the production of thermal power forgings. New wear-resistant coatings such as nano-carbon coatings and Hastelloy coatings have high hardness and wear resistance, which can effectively resist wear and corrosion and extend the service life of equipment. In addition, the wear-resistant coating also has multi-functional applications such as reducing noise and improving corrosion resistance, which can meet the needs of different working environments. With the continuous development of science and technology, more new wear-resistant coatings will emerge in the future, bringing more choices and possibilities for the production of thermal power forgings.
