Application of The DMAIC Method in Improving The Quality of Electric Power Steering Housing Products

PT. ABC is a manufacturing company that produces Electric Power Steering (EPS) Housing components. For the past three months, there have been problems with EPS production process. The problem related to finding of defective products which on average reached 3.9% total production, and has exceeded maximum limit allowed by company, 2%. This study aims overcome these making improvements using DMAIC method in hope root cause emergence defects reduce number occur. improvement results shown reduced from 3086 pcs 1948 per 22 working days or decreased 0.54% an increase sigma level 3.95 4.01 sigma. In this case, implementation effectively 1.5% based level. To achieve 6-sigma equivalent world-class industry, companies must make continuous fixing other causes.