At present, Zhengzhou Lijia has developed the inner hole tungsten carbide spraying process and equipment for the diameter of more than 100mm. As the core of the supersonic flame inner hole spraying equipment, Lijia adopts HV-80D type kerosene supersonic flame inner hole spraying gun. The inner hole spray gun adopts the world's original design structure, and has obtained the national invention patent, patent number: X and the continuous design structure innovation and optimization, the spray gun is the world today, only using fuel and oxygen combustion auxiliary supersonic spray gun with the smallest diameter, the gun front end diameter is only 80mm, currently can penetrate into the narrow space within 100mm for spraying operations. At present, it has been successfully applied to the spraying of narrow space in a variety of industries.
The technology is mainly used for inner hole, hydraulic parts, cylinder, valve body, the compressor bore, shell lumen, inside the container, eight hole and internal condition, in the narrow space can be realized by this technology in the inner diameter 100 mm above the wall coating cemented carbide coating, the coating hardness, vickers hardness above HV1100, wear-resisting, anti-corrosive, high temperature resistance, and other functions, At present, Zhengzhou Lijia is actively research and development for smaller inner hole spraying, plans to develop the inner diameter of 80mm in the second half of this year to develop cemented carbide spraying technology, at present, our company to undertake a large number of inner hole tungsten carbide spraying business, welcome friends to visit.