With the development of aviation, aerospace and civil technology, the use temperature of hot end components is more and more high, has reached the limit of superalloy and single crystal materials. Taking the heating parts of fuel turbine such as nozzle
In order to obtain higher energy efficiency and greater thrust, and heavy duty gas turbine engine turbine inlet temperature is as high as 1600 degrees above, only on the improvement of the performance of the materials and the improvement of structure design, has been unable to meet the rapid development of aviation engine and gas turbine industry needs
Zhengzhou Lijia has developed the spraying process and equipment for the inner hole of tungsten carbide with a diameter of more than 100mm. As the core of the supersonic flame inner hole spraying equipment, Lijia company uses HV-80D type kerosene supersonic flame inner hole spraying gun.
The working face of the firebrick forming template is large, and it is subjected to the extrusion, scraping and grinding of refractory hard particles on the 200T pressure machine, so its service conditions are relatively bad. Therefore, the die working face is required to have high hardness
Supersonic flame spraying flame flow (1100 m/s) speed, spray particle impact energy, powder oxidation and burning loss is small, can obtain high density, high bonding strength,
High wear resistance: during the working process, the roller is affected by abrasive wear, adhesive wear and fretting wear, and the wear resistance is not enough, which not only affects the accuracy of the roll surface and the quality of the pole piece, but also reduces the production benefit;
System on line equipment drawing reel and cone pulley surface need to be the excellent properties of wear resistance and fatigue resistance, otherwise the service life is short, often need to change, greatly increased the production cost of the customer
Insulation and conductive coatings are increasingly used in aerospace, automotive, electric power, semiconductor, flat panel display
