Research On The Gloss Improvement Of Waterborne Wood Coatings In Z Company Based On Six Sigma Management

Six sigma management,which started in MOTOROLA Company,has been adopted by many enterprises in the world and obtained good economic benefit after many years of practical application.On the basis of data analysis,it is a kind of management ideas and methods in order to reduce defects,cost savings and improve customer satisfaction.Z company group has become the largest wood furniture coating s company in China.As the waterborne wood coatings leading company,how to guarantee the stability of waterborne wood coatings product quality and enhance the level of quality of waterborne wood coatings,especially the gloss qualified rate,has become the main problem.Improving product quality consistency is the basis of “solvent to water” under the current environmental pressure of industry.Based on this background,the water-borne wood coatings gloss quality is studied as a research topic of this paper.This paper first introduces the background and practical significance of the thesis in the process of the transformation and upgrading of the products based on the current environment,also introduces six sigma management and the successful application experience at home and abroad.The origin and development of six sigma management are described in detail.The situation and the main problems of the wood coatings industry are introduced at the same time.The necessity of implementing six sigma management in Z company is analyzed.Finally by using five stages process improvement method of Define,Measure,Analyze,Improve and Control,the gloss qualified rate of current Z company water-borne wood coatings products is improved.In the definition stage,according to water-borne wood coatings process,the problem of the quality of gloss was identified.The team of Six Sigma project was established.The high-end flow chart(SIPOC)was used to identify the problems of the quality.In the measurement stage,the p roduction flow chart and causal diagram were used to determine the factors that affect the quality of glossiness.Data collection plan was made and the validity of the measurement system was evaluated by one-way analysis of variance to ensure the accuracy of the measurement results.In the analysis stage,the stability and process capability of the production process were analyzed by using the operation chart and Xbar-S control chart.Finally,the key factors affecting the glossiness of the water-borne wood coatings were determined by the correlation analysis and regression analysis.In the improvement stage,it developed solutions for the key factors.Preliminary test results had reached the expected goal.In the control stage,successful practices are standardized by optimizing process flows,modifying work instructions and trainings.Through the research on the gloss improvement of water-borne wood coatings in Z company based on six sigma management,the cause of gloss qualified rate is found out,and put forward the corresponding solutions.The practice of Six Sigma management is proved to be feasible and effective.The research helps Z company accumulate valuable practices to develop six sigma activities and elevate its quality management to next level.For the current supply side reform advocated by the country,the transformation and upgrading of products,but also for the promotion of private coating enterprises,this paper provides a reference experience.