Reduce Product Defect in Stainless Steel Production Using Yield Management Method and PDCA

Rosalendro Eddy Nugroho, Agus Marwanto, Sawarni Hasibuan

This study aims to examine and analyze the factors that cause the emergence of defects Wavy & Curve Up on Coil Spring Plate (CSP) at PT. BNM Stainless Steel. Both types of defects are also what makes the trust of customers to the products produced by the company to be down. This is marked by the decrease of orders from Customer from 2014 to 2016. The research data is daily data from 2014 to 2016 data which is the Data of Secondary from Quality Control Department and Production Department. The research covers all product with coil spring plate type (CSP) which is 1/8 Hard, 1/4 Hard, 1/2 Hard, 3/4 Hard, Hard, Extra Hard, and Super Extra Hard (SEH), where sample which is taken by product category which has the highest defect rate among the number of processed products. This research uses PDCA method (Ishikawa Diagram and Pareto Analysis) and Yield Management (Management to produce good product). The results showed several factors that cause the emergence of defect wavy, defect Curve Up and Curve Down. Factors cause of all these problems obtained by using tools fishbone diagram. Completion of all problems using the PDCA system by promoting improvement as a foundation for eliminating all problems. The spirit is Continuous Improvement.