Four important methods of quality engineering
2023 / 10 / 23
In the production process, the fluctuation of the processing size of the product is inevitable. It is caused by the fluctuation of basic factors such as people, machines, materials, methods and environment. There are two types of volatility: normal volatility and abnormal volatility. Normal fluctuations are caused by accidental factors (unavoidable factors). It has little impact on product quality, is technically difficult to eliminate, and is not worth eliminating economically. Abnormal fluctuations are caused by systemic causes (abnormal factors). It has a great impact on product quality, but measures can be taken to avoid and eliminate it. The purpose of process control is to eliminate and avoid abnormal fluctuations, so that the process is in a normal state of fluctuation.
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