Application Of SPC’s Control Chart In Quality Management

With the market competition fiercer and fiercer, quality is very important for theexistence and development of corporation. Quality control is one of the core contentin the corporation management. The quality variance of the products is regularity. Wecan find out the root cause of abnormality, and perform quality management forimprovement. Statistical process control is preferred because it’s cheap effective andeasy.Statistical process control is one of the basic method of quality control. It’s veryuseful for quality assurance of corporation. Especially for mass production, SPC isproved scientific and efficiency. Regarding SPC, Control chart is important method,because it can reduce scrap rate, increase quality of products, increase benefit ofcorporation. SPC is regarded and applied by more and more corporation.First, SPC is introduced, including definition, function, development and ProspectForecast of SPC at home and abroad. Then the concept, statistics principle andclassification of Control Chart are discussed. In which Shewhart control chart isexpounds emphatically, with its classification, choice, stabilization criterion etc.X Rcontrol chart’s operation is analysed deeply, and with actual production, theShewhart control chart is extended, method of the X-control chart and average controlchart for Rayleigh Distribution are proposed, and primary verification is performed.Based on statistics theory, the stability criteria of manufacturing process is intensivelystudied, and concluded that the essence of manufacturing process stability is theconsistency of instant distribution for qulity characteristic, therefore the stability ofmanufacturing process can be distinguished by testing the consistency of instantdistribution.Lastly, a case about SPC application of Sundiro Honda Motorcycle Co. Ltd TianjinBranch office is provided, which demonstrated that SPC is an effective method forquality controlling and improving.