Study Of Ceramic Coating Deposition On The Surface Of Gears By Composite Treatment

Gear transmission system is one of the most important power and transmission forms for machinery and mechanical equipment. With the development of modern industry, a demand of high-power, high velocity and heavy load gears is increasing, and the requirements of the performance of gears are emphasized. As a result, it is of great importance to study the new technology and materials' application on gears, improve the quality and performance of gears, reduce the cost of manufacture and use, decrease the noise, energy and resource comsumption. It has been emphasized on gear research currently."Study of Ceramic Coating Deposition on the Surface of Gears by Composite Treatment" as one of the major parts of the project (50105022) financed by National Nature Science Foundation, a detailed study is carried out on the deposition of ceramic coating on gear surface with high adhesion, and provide academic and experimental data for high intensity, high toughness, antiwear, high temper resistance gears with long life. Major works in this paper are as follows.① Study on plasma nitridng on 32Cr2MoV steel. By plasma nitriding, the hardness of the surface of 32Cr2MoV is improved, and a hardened layer is found, which provide a good support to TiN coating deposited by Multi-arc ion plating.② Research of plasma nitrinding and ion plating composite treatment, by orthogonal test,deposit TiN coating on the surface of 32Cr2MoV steel after plasma nitriding, the parameters of Mulit-arc ion plating are concern and the process is optimized. We can acquire TiN coatings with high performance by this means.③ The microstructure of 32Cr2MoV steel, nitrided layer and TiN coating are analysised. The anti-corrosion of TiN coating is also investigated.④ To explore the frictional wear performance of TiN coating a roller test with 32Cr2MoV plasma nitriding and composite treatment are implementated. The results indicate 32Cr2MoV steel has better wear resistance.⑤ Some surface ceramic coated gears are made, which is a good start for the following research on gears.