The Product Quality Improvement Study Based On SPC And DMAIC

Along with the development of global economy and globalization the competition become more and more intensely, this will forced companies to focus on product quality competition. Meanwhile, the enterprise also gradually realized the key element to keep good quality is do things good at the very beginning, gradually reduce the gravity toward and eliminate various fluctuations. Prevention becomes the core of Quality works, which has become the main target of quality engineering.In products manufacturing process, product quality characteristic value is always fluctuations. It's minor affect for product quality from causal factors, but in production process always exists, is inevitable, by abnormal factors causing fluctuations in product quality impact, and by process improvement can be avoid. Therefore, in the process of production, need to focus on the quality of products and the abnormal fluctuations will soon find out abnormal reason, make improvement, remove abnormal factors, and achieve finally stable state.Statistica1 SPC (statistical Process Control Process Control) can effectively reduce and Control Process of manufacture quality fluctuation, it mainly used statistical techniques to the production Process monitoring, and to the production Process of abnormal trends and warning, so that production management personnel take timely measures, remove abnormal, restore the production Process stability.Although the SPC technology can monitor production process of abnormal fluctuations effectively, but not yet instruct on-site staff and management personnel timely and accuratly to find the source of abnormal fluctuations. If we can cooperate to apply the quality improvement methods SPC, FMEA and DMAIC (definition, measuring, Analyze, Improve, Control) five stages constitute process improvement method, it can get very good Control effect, SPC, FMEA and DMAIC are effective tools to find out root cause, using DMAIC found fluctuation root causes, take measures to eliminate abnormal fluctuations timely, avoid unqualified semi-finished products into next procedure, to achieve "warning" type quality Control.Therefore, based on the analysis of DMAIC and SPC technology and method on the basis of investigation here we defined production process application model which is based on manufacturing process quality control, as the research object, by establishing manufacturing process quality control system, makes DMAIC SPC technology and quality analysis tools combined together effectively. and its applicated into cable manufacturing process. The production results show us that this method for manufacturing process and product quality control is effective.