Research On Improvement And Innovation Of The Manufacturing Method Of The Engine Inlet And Exhaust Valve

The valve is one of the key parts of the engine. Their qualities directly affect the efficiency of the engine. With the surge in China’s passenger car sales, engine sales also increased. According to preliminary estimates, China’s annual productions of the valve are more than 1 billion. The advancement of valve processing technology will directly affect productivity of valve industry. If the foreign advanced equipment and technology are introduced, the investment costs will be huge and the maintenance will be inconvenient.Therefore, it will have a greater impact on the valve productivity to improve the valve process based on existing equipment and processes combined with our existing production conditions.According to the actual production situation, it is important to improve the production process and equipment in the process of production and to improve the production efficiency.The improvements include the following:(1) Improvement of valve stem processing method As an improvement of the traditional method of valve stem, a new method is put forward, which is used for rolling process, the production efficiency is high, the quality is good, the cost is low, the fuel consumption is reduced, and the service life of the engine is extend.(2)Improvement of machining method of valve cone sealing surface The traditional machining method for centerless grinding machine for grinding, usually need 4 ~ 5working procedure processing.New valve cone processing using simple rolling tool is installed on the lathe to rolling processing, after rolling processing, can improve the surface hardness of the valve cone and 4~5 units;Abrasion resistance about double; Greatly improve the production efficiency, processing quality has significantly improved at the same time,also can save a lot of diamond grinding wheel.Finally, the article presented some questions and suggestions in improving the processes and process equipment.