火花塞成形新工艺研究

Research on new technology of spark plug forming

小六角火花塞是当前汽车发动机上普遍采用的点火元件,分析小六角火花塞与传统火花塞的主要区别,介绍小六角火花塞壳体成形工艺的特点,探讨小六角火花塞的材料选择、下料、毛坯精整形、退火、润滑处理和冷挤压工艺,同时,也介绍了这种壳体成形工艺过程中容易出现问题的工序、部位和解决方法.最后还对形状复杂、独特的小型冷挤压零件的成形要点和不足之处进行了总结。

Small hexagon spark Plugs are the prevailing igniting parts for petrol engine in advanced countries, which are the substitutes of the ordinary spark plugs used in our country now. This article introduces small hexagon spark plugs from the following 4 aspects： A） The main differences between small hexagon spark plugs and traditional spark plugs. B） The characteristic of shell forming technology： material selection, blanking, slug with preliminary processing, annealing, surface lubrication treatment process, the design, selecting principle and method in extrusion technology. C） The process, station where problems are very easy to arise and the solution. D） Summarizing the key and the shortcoming of the cold forming parts with complex peculiarity. All these have practical value to the technicians who are engaged in the forming technology and design.