The Analysis Of Quality Cost In Six Sigma Theory

As our country take part in World Trade Organization. The competition among company were much more intensify., quality, as one of the most important competition factor. With which the company pay attention to. So the company goes to find the way how to control quality. all the time. At this time,6Sigma theory get large successful in the USA, and attract Chinese company's attention. They introduce 6Sigma to their company.but only twenty percent got success. Most are failed. Many article analysis the reason why they failed. And there are many kind of it. But one reason that they all mentioned it is that they didn't insist on implementing 6Sigma.The company implements 6 sigma theory incompletely has potential reason. Company implements 6 theory,producing no defect product, pursuit perfect quality. it needs to invest a lots of preventing quality cost. but if it invests too much preventing quality cost,the traditional quality cost will be away from the least quality cost. So after the improving of the quality, we can not see the effect quickly. So they loss the confidence, and give up finally. Considering this situation, this article introduce potential quality cost, constructing. and analyzing quality cost model. It makes that the company who implement 6 sigma theory will see the effect all the time, and giving the proposal to the company that who improving their quality.When this article construct model, first of all, using trend analysis to find the potential quality loss curve, put the defection that potential quality made as the evidence to analysis, and study the relationship between the effecting factor and the potential quality.. Then using economics to construct model for company more easy to analysis, for that only the single factor and linear can construct the model. So, first of all, analysis the effecting factor put the multivariate to single factor, second, put the nonlinear to linear. Finally it is easy to contrast the model. When analysis the model, introducing the lagged variables and dummy variables to analysis. Taking the significant level to a new stage. Analyzing any factors which can make model failed, making the model more significant. It make six sigma quality cost model as a strong basis for company to analysis. their quality controlling.