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Defect Reduction in Special Wire Mesh Production by Six Sigma Technique

Abstract— This research applied the Six Sigma Technique to reduce defects arising in Special Wire Mesh production processes at the case study company. Research procedure is according to the DMAIC Process. The first Define Phase identified the scope of the problem using the Flow Process Chart and Pareto Diagram to discover defect types causing the greatest damage. The second phase is the Measure Phase, which aimed at measuring capabilities of the process and conducting Measurement System Analysis by analyzing Attribute Gauge R&R. The next phase is the Analyze Phase which analyzed the cause of the problem by brainstorming with the relevant personnel, creating a fishbone diagram and a Cause and Effect Matrix to find the causes of the type A defect. The next phase is the Improve Phase which amended the process with the principle of Visual Control. The final phase was the Control Phase. The research found it was possible to reduce the type A defect from 0.79 kg/1,000 m2 to 0.37 kg/1,000 m2, or a reduction of 52.58%.

Index Terms— six sigma technique, DMAIC process, defect reduction.

Kritnicha Wasurattanapat
Master’s Degree Program in Industrial Engineering, Faculty of Engineering, Chiang Mai University, THAILAND
Rungchat Chompu-inwai
Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, THAILAND

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Cite: Kritnicha Wasurattanapat, Rungchat Chompu-inwai, "Defect Reduction in Special Wire Mesh Production by Six Sigma Technique," Proceedings of 2018 the 8th International Workshop on Computer Science and Engineering, pp. 761-768, Bangkok, 28-30 June, 2018.