The Application Of Six Sigma Methodhology In The Process Of Product Quality Control: A Case Study From A Steel Tower Production

Rizki Agam Syahputra, Sandra Octaviani B W, Lukas Lukas, Cut Widy Aulia Putri

Abstract


This paper aims to apply the Six Sigma framework with the DMAIC methodology in the process of manufacturing quality control. The case study company is one of the companies in Indonesia that engages in the manufacturing and trading of steel plates and ready-mixed concrete for industrial construction, transportation, electricity, and communications. The goal of Six Sigma in this study was to ensure the required product quality and to avoid an increase in internal costs associated with poor product quality. In this study, Six Sigma is used to analyses the quality level of steel tower manufacturing based on the number of production and defective products from March-May 2021. The results show that the company's highest product defect rate for tower products is 2,926,829 per one million productions. Therefore, the sigma value obtained from the study shows a value of 4.256, with the criteria of 3.4 DPMO (only 3.4 defective product was found on every one million productions). @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:-536870145 1107305727 0 0 415 0;}p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0cm; text-align:center; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman",serif; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-US;}.MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-family:"Calibri",sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:Calibri; mso-fareast-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}div.WordSection1 {page:WordSection1;}

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DOI: http://dx.doi.org/10.52155/ijpsat.v35.2.4791

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