Riddhish Thakore et al. Int. Journal of Engineering Research and Applications www.ijera.com ISSN : 2248-9622, Vol. 4, Issue 11(Version - 4), November 2014, pp.63-69 www.ijera.com 63 | Page A Review: Six Sigma Implementation Practice in Manufacturing Industries Riddhish Thakore* 1 , Rajat Dave* 2 , Tejas Parsana**, Amit Solanki*** *Department of Mechanical, SVBIT, Gujarat Technological University, India ** Department of Mechanical, VVP college of Engineering, Rajkot, India *** Department of Mechanical, C U Shah collge of Engineering, Surendranagar, India ABSTRACT Higher Productivity achievement is very crucial factor for the field of production. With the High productivity various other factors must be taken in to consideration in manufacturing industries such as global competitors, diversity in product range, lead time and customer demand in terms of quality and quantity. A new benchmark called Six Sigma has been invented for dealing with all these needs. Six sigma is a quality initiative which reduces variations in a process and helps to lower the cost of product as well as process. The objective of this paper is to review and examine the advancement and encounters of six sigma practices in Global manufacturing Industries and identify the key tools for each step in successful Six Sigma project execution. The paper also integrates the lessons learned from successful six sigma projects and their prospective applications in various manufacturing Industries. In today scenario, many global manufacturing industries operate their processes at the two to four sigma quality levels. Keywords – Six Sigma, DMAIC, review, Tools and Techniques. I. INTRODUCTION The history of quality is as old as civilization. Various quality management strategies have been applied for many years and those strategies are continuously involved in the quality improvement for the customer’s satisfaction [1]. There are several different definitions of the Quality Concept and many different opinions of what should be encompassed in the concept of product quality. "The quality of a product is its ability to satisfy and preferably exceed the needs and expectations of the customers".[2] In the more recent history of the quality development, the quality improvement program Six Sigma has been successful. Six Sigma was created at Motorola in the 1980s. Owing to Six Sigma, Motorola managed to reduce their poor-quality costs and decrease variation in many processes. As a result, Motorola became the first recipient of America’s Malcolm Baldrige National Quality Award in 1988.[3] Six Sigma is one of the last additions in the field of quality improvement methods and (or) business process improvements methods. Although it has been implemented for many years mainly in large manufacturing companies, like Motorola, GE and Honeywell etc.[4] Six Sigma leads mainly to reduction of poor quality cost. The DPMO concept is not just a slogan but a much grounded way to measure how successfully Six Sigma objectives are implemented.[6] II. SIX SIGMA DEFINITION The term Six Sigma comes from statistics as the Greek letter s (sigma) symbolizes the standard deviation, namely the dispersion of the data from the mean average. Number six expresses the accepted level of quality that is six times the standard deviation. Most people consider Six Sigma as a purely statistical methodology. In methodology’s practice the term Six Sigma level, means 3.4 defects per million opportunities or success rate of 99.999660 percentages. Six Sigma’s purpose is to reduce the variance-variability in processes, so to provide to the clients-consumers of the organization, products or services which are more reliable and with fewer errors. Moreover, some companies implement or try to adopt Seven Sigma level, which means even fewer defects and more satisfied customers.[4] The six sigma method includes measured and reported financial results, uses additional, more advanced data analysis tools, focuses on customer concerns, and uses project management tools and methodology. Six Sigma = TQM (CQI) + Stronger Customer Focus + Additional Data Analysis Tools+ Financial Results+ Project Management.[5] 2.1 DMAIC Process The tools of Six Sigma are most often applied within a simple performance improvement model known as Define-Measure-Analyze-Improve-Control, or DMAIC. DMAIC is summarized in Figure 1. DMAIC RESEARCH ARTICLE OPEN ACCESS