Technical Topics-第12页-Changsha Langfeng Metallic Material Co., Ltd.

New Development of Arc Spraying Technology-Metal arc spraying
Russia's ВНИИТУВИД Institute has been engaged in metal arc spraying process and equipment for many years, at present it is in the summary, absorbing advanced experience at home and abroad based on the successful development of a high-performance type M-5 arc spray gun. Compared with similar devices, it has the following advantages: jet angle is reduced to 13 °, spray utilization increased by 25%, for φ2.4mm spinneret, spray coating process can reduce the weight loss of 30 to 40%; diameter of more than 100mm Cylindrical cylindrical parts, the inner surface of the spray depth of up to 400mm; The device uses a removable structure, and parts of the disassembly is relatively simple, so its maintenance is good; through the console for equipment operation is simple and convenient.
Thermal spraying technology
Thermal spraying is a surface strengthening technology, has been the focus of the promotion of new technology projects. It uses arc, plasma arc, gas-oxygen and other forms of heat source, the metal or non-metallic materials heated to melt or semi-molten state, and under the action of high-speed air so that the atomized droplets or high temperature particles, Wear, corrosion resistance, heat resistance, oxidation resistance, insulation, insulation, conductive, sealed, disinfected, anti-microwave, anti-corrosion, anti-corrosion, anti-corrosion, anti-oxidation, heat insulation, insulation, conductive, sealing, disinfection, and so on. Radiation and other special physical and chemical properties. It can repair the old equipment in the waste, so that scrap the parts "back to life"; can also be strengthened in the manufacture of new products and pre-protection, so that "longevity."
Technology Exchange： Research and Application of Arc Spraying Mold Making Technology
Technology Exchange: Research and Application of Arc Spraying Mold Making Technology Abstract: The arc spraying technology has been successfully applied to mold making,which opens up a new field of arc spraying technology.The use of arc spraying mold has the characteristics of short cycle, low cost and high efficiency. Especially,it has obvious economic effect and practical value for some molds with complex shapes and various decorative patterns. Key words: arc spraying; mold; spray coating; matrix For more information please link: www.langfengmaterials.com,please contact us: sales@langfengmaterials.com
Thermal spraying technology characteristics and application
Thermal spraying technology is an important component of surface engineering in the field of materials science. It is a kind of surface strengthening and surface modification technology. By spraying a coating on the surface of metal substrate, the metal has the characteristics of wear resistance, corrosion resistance, Oxidation, electrical insulation, heat insulation, radiation protection, anti-wear and sealing performance.
Production method of metal powder
These two atomization methods use high-pressure water and high-pressure gas as the atomizing medium to break the continuous flow of molten metal, which is the most important method of producing metal powder. The atomization mechanism includes the formation of a thin layer of fluid, the thin layer is broken into a metal flow wire and the metal flow wire shrinks to form three stages of microdroplets. High-pressure gas atomization powder to obtain a diameter of 50-100μm metal powder, high-pressure water atomized powder particle size between 75-200μm; gas atomization powder is smooth spherical, cooling rate of about 102-103 ℃ / s, water atomization Powder often has irregular morphology and surface, the cooling rate of 102-104 ℃ / s. High pressure gas atomization and water atomization are widely used for large tonnage production of aluminum, tool steel, superalloy, copper, iron, tin and low alloy powders.
Thermal spraying technology introduction
Thermal spraying technology began in the early of this century. Initially, the molten metal is formed only by the flow of compressed air, sprayed onto the surface of the substrate to be coated to form a film layer of tissue. The spraying temperature, the performance of the droplet on the substrate surface and the impact velocity of the material forming the coating layer constituting the core spraying technology. The whole development of thermal spraying technology, which is basically along the three leading line to move forward.Temperature and speed depends on different heat source and the equipment structure. In a sense, the higher the temperature, the faster the speed, the more excellent coating formation, which leads to two elements of the temperature and speed of technological development in the whole process of competition and coordination situation. Variety of coating materials selectively, is another advantage of thermal spray index, which can make different equipment of working face of different devices to be " the Golden, wearing helmet piercing." Just these three elements, so the thermal spraying technique to become a truly unique synergistic effect, it can be designed for the various properties of the surface, obtained from the general mechanical maintenance...

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