Comparing with the traditional liquid oxygen and kerosene HVOF system (LHVOF), the development of the DZ9000E Oxygen Gaseous HVOF system (GHVOF) is emphasized on reduction of the cost of coatings and increasing the in-situ removability to suit various working conditions. DZ9000E hand-held spraying gun is assembled with dual-valve handle, ON/OFF switches for powder feeding, and compressing and cooling valve, which can provide portable and simple operation mode for users. The whole system is economical, which enables the system to meet the requirement of spraying medium or low cost HVOF coatings for medium and small job shops. The deposited cermets coatings by the DZ9000E system have good performance with average micro hardness of over HVOF 2900 and the bond strength between coating and substrate of over 50MPa.

Thermal spraying technology was one of the listed advanced manufacturing technologies to be developed with great effort in “the eleventh five-year” programming and the perspective layout for the years to 2020 of China. It is also a very important technology to promote establishment of economical society. This paper analyzed some application cases of thermal spraying technology to several typical components such as the corrugated roller used for packaging industry, injection molding screw for plastic industry, insulated bearing for railway industry and ball valve with large diameter for petroleum & chemistry industry which were practiced by Surface Engineering Research Institute of CAAMS in recent years. This paper presented some new developments on applications of thermal spraying technology in China and some considerations on the developing trends of thermal spraying applications in China in future are put forward in comparison with the current situation of oversea thermal spray practices.