Defect reduction with 8 muda concepts in the throttle valve manufacturing of ABC company

บทคัดย่อ

          This research aims to examine on how to reduce the defects from the production process of throttle valves used in automobile engines, using the waste reduction technique of MUDA 8, collecting data of defects from the production process, prioritization of the problems, choosing problems to solve, and analyzing the problems with fishbone diagram and rational analysis (5 why analysis).The result reveals that the problems of defective products are dent and scratch marks from residual chips, and from friction of raw materials and loading work pieces before the work piece forming process. The solution for this problem is to install automatic blow molding. Another problem concerns discoloration of the work piece, rich can be solved by changing the lubricant oil used in the pressing process. The aforementioned adjustment causes reduction in defects. Furthermore, MUDA 8 technique has earned more benefits from re-designing in the production process.