Laser cladding technology is a surface modification technology and equipment maintenance technology with high-tech content. It is a combination of material preparation and surface configuration. It is one of the key supporting technologies of green remanufacturing technology. It is a high-tech industry in line with the national sustainable development strategy. Its research and development has key practical significance and economic value.
At present, the laser cladding process has a wide range of applications. For other laser processes, the diversity, ductility and adaptability of the laser cladding process have incomparable advantages over other processes. The laser cladding technology not only establishes the need for specific functions on the surface of raw materials, but also saves a lot of valuable elements, which is quite popular in the industry. Now, after decades of development, laser cladding technology has been widely used, especially in industrial applications, such as petroleum, shipbuilding, aerospace, engineering machinery and nuclear power.
Laser cladding technology is to use high-energy laser beam irradiation, through rapid melting, expansion and solidification, to cladding a layer of material with special physical, chemical or mechanical properties on the surface of the substrate, to form a new material different from the substrate, to make up for the lack of high performance of the substrate. According to the performance requirements of the workpiece, the alloy and metal matrix conforming materials with various components can be melted to prepare the surface coating with the characteristics of heat resistance, corrosion resistance, wear resistance, friction reduction, oxidation resistance and non-magnetism, so as to make the material have the structure and properties that conventional treatment does not have.
Coal mining field
In the coal mining industry, based on the harsh production environment, there is a high demand for the functions of coal mining machinery parts. The main effective form of hydraulic column is coating scratch and coating peeling, which will seriously interfere with the function and service life of the product and require overall maintenance. The electroplating process with high pollution is adopted for the coating, and electroplating is one of the traditional processes to be replaced day by day in China. The anti-corrosive surface of the column adopts the process of laser cladding stainless steel layer. The laser cladding hydraulic support column is a kind of high-end technical product, which effectively improves the anti-corrosive function of the column and increases its service life. Therefore, the strengthening of hydraulic column by laser cladding technology has a large industry scope, and it is also a state-supported environment-friendly and recycling high-tech, which can replace the traditional electroplating process.
Under specific working conditions, the rotor journal of the steam turbine rotor in the power plant is subject to wear and tear, and the last stage and the second last stage blades of the steam turbine often form gas turbidity under a period of high temperature working conditions. The steam turbine is a large equipment which is not convenient for transportation, so it needs high reliability laser in-situ repair technology.
The formation of laser cladding of large aluminum alloy structures has been established in domestic universities, which is one of the most significant achievements in laser cladding technology. There is a huge market for the remanufacturing of aero-engine blades. There are many kinds of blade materials and high professionalism. And the repaired blades need to do a lot of work in terms of repair materials, flaw detection technology and life assessment. This can avoid the need to spend huge amounts of money to purchase new parts from abroad for later maintenance.
Oil exploration field
In the petrochemical industry, based on the long-term harsh production environment of equipment, it is more likely to cause serious corrosion and severe wear of parts and components, which will lead to complete scrapping of larger and expensive parts, such as drill collars, non-magnetic drill collars, centralizers and jars. Therefore, under the technical reproduction function of laser cladding, many parts can be restored to their original functions, and the service life of many parts can be enhanced.
Coal mining field
In the coal industry, due to the harsh working environment, the performance requirements of coal mining machinery parts are high. The main failure forms of hydraulic column are coating scratch and coating peeling. The coating adopts high-pollution electroplating process, and electroplating is one of the traditional processes to be gradually banned in China. Therefore, there is a large market for laser cladding technology to strengthen hydraulic column, and it is also a state-supported environment-friendly and recycling high-tech, which can replace the traditional electroplating process.
In addition, laser cladding can also be applied to steel metallurgy, automobile, engineering machinery, mold manufacturing, shipbuilding and other industries, with a very broad application prospect. With the continuous promotion of the “Made in China 2025” development plan, the laser cladding technology will be accepted by the majority of industrial users, and will produce huge economic benefits.About HGSTAR: HGSTAR is is a sub-brand of HGTECH.HGTECH the pioneer and leader of laser industrial application in China, and the authoritative provider of global laser processing solutions. We have comprehensively arranged laser intelligent machine, measurement and automation production lines, and smart factory construction to provide overall solutions for intelligent manufacturing.