Study of prevention mechanism in process control

The product is built by manufacturing process or working process. In order to get the maximum output with best quality by minimum input and lowest operating costs, the prevention mechanism is proposed to be set up in production. The quality is often studied, however, the prevention mechanism is seldom mentioned or studied further till the issues are found. This paper reports the prevention mechanism with Six Sigma Methodology from the quality management perspective. The key techniques including DMAIC, SPC and MSA are utilized to prevent the unexpected occurrences in the final product. According to the statistical principle, the process capability is checked and the process reliability is evaluated to verify the prevention mechanism. The demonstration on power meter production shows the average failure on line has been decreased 33% and the remedy costs are saved completely after the prevention mechanism in process control is set up.