A Six Sigma Application Case Study to Improve a Rolled Throughput Yield of an Automobile Steering Wheel Manufacturing Process

Park, Jong-In; Lee, Dong-Kyu; Byun, Jai-Hyun

Journal of Korean Society for Quality Management > Volume 33(1); 2005 > Article

Journal of Korean Society for Quality Management 2005;33(1): 32-.

자동차 Steering Wheel 제조공정의 누적수율 개선을 위한 6시그마 적용사례

박종인¹, 이동규², 변재현³

¹LG화학 혁신지원팀
²LG화학 울산공장 혁신추진팀
³경상대학교 산업시스템공학부

A Six Sigma Application Case Study to Improve a Rolled Throughput Yield of an Automobile Steering Wheel Manufacturing Process

Jong-In Park¹, Dong-Kyu Lee², Jai-Hyun Byun³

¹Management Innovation Team, LG Chemical
²Leading Innovation Team, Ulsan Plant, LG Chemical
³Dept. of Industrial and Systems Engineering and Engineering Research Center, Gyeongsang National University

ABSTRACT

This paper presents a six sigma application case study for an automobile steering wheel manufacturing process using rolled throughput yield improvement activity. Hidden factory and first pass yield concept is introduced and a DMAIC procedure is implemented to maximize the first pass yield. The result of the six sigma project amounts to the reduction of failure cost of 1.2 billion won per year in the steering wheel manufacturing process. This paper can benefit six sigma practitioners in some ways.

Key Words: Six Sigma;Automobile Steering Wheel;Rolled Throughput Yield;Hidden Factory;Taguchi Method;