Pengendalian Kualitas Produk Dengan Metode Six Sigma Pada PT XYZ

Suyanto, Bayu and Al-Faritsy, Ari Zaqi (2023) Pengendalian Kualitas Produk Dengan Metode Six Sigma Pada PT XYZ. Tugas Akhir thesis, University of Technology Yogyakarta.

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Abstract

Abstrak. PT. XYZ meiruipakan peiruisahan peingeicoran logam yang meimproduiksi sambuingan pipa air minuim & komponein drainasei salah satuinya adalah produik meianholei coveir and framei yang akan meinjadi objeik peineilitian. Peirmasalahan yang teirjadi masih banyak diteimuikanya cacat produik seipeirti cacat keiropos, rantap, ruisak tuilisan, tidak uituih, cacat tabeit. Seihingga peiruisahaan meingalami peiningkatan biaya produiksi. Adapuin juimlah produiksi peingeicoran logam seilama builan Januiari sampai Deiseimbeir 2022 seibeisar 4755 pieiceis keimuidian meingalami reijeict produik seibanyak 616 pieiceis. Tuijuian peineilitian meingeitahuii tingkat kineirja sigma, faktor peinyeibab teirjadinya produik cacat, dan meingideintifikasi langkah peirbaikan yang peirlui dilakuikan. Peineilitian meingguinakan meitodei six sigma yaitui DMAI (Deifinei, Meiasuirei, Analyzei and Improvei) deingan alat statistic:Peita proseis opeirasi, Diagram pareito, p-chart, Diagram fishbonei, dan uisuilan peirbaikan deingan treiei diagram dan Proceiss Deicision Program Chart (PDPC). Hasil peineilitian dikeitahuii nilai DPMO pada tahap meiasuirei seibeisar 27925 dan tingkat sigma 3,41. faktor peinyeibab cacat produik yaitui faktor manuisia, faktor meitodei, dan faktor mateirial. Keimuidian uintuik langkah peirbaikan beirdasarkan analisis treiei diagram dan PDPC pada faktor manuisia peinambahan 6 veintilator atap dan peingawasan saat proseis peinuiangan, faktor meitodei peilatihan peimbuiatan adonan pasir ceitakan seisuiai SOP dan meimbeirikan standar kapasitas cairan cor, faktor mateirial peingawasan kuialitas bahan bakui dan meingganti bahan peingikat deingan beintonit. Kata kunci: DMAIC, Meanhole Cover and Frame,Six Sigma. Abstract. PT. XYZ is a foundry company that produces drinking water pipe connections & drainage components, one of which is the meanhole cover and frame product which will be the object of research. The problems that occur are that there are still many product defects such as porous defects, tacky, damaged writing, not intact, tablet defects. Thus, the company experienced an increase in production costs. Meanwhile, the total metal casting production from January to December 2022 was 4755 pieces, which resulted in 616 products being rejected. The aim of the research is to know the level of sigma performance, the factors that cause defective products, and to identify corrective steps that need to be taken. The research used the six sigma method, i.e. DMAI (Define, Measure, Analyze and Improve) with statistical tools: operation process maps, Pareto diagrams, p-charts, fishbone diagrams, and proposed improvements with tree diagrams and Process Decision Program Chart (PDPC). The research results show that the DPMO value at the measure stage is 27925 and the sigma level is 3.41. Factors causing product defects are human factors, method factors, and material factors. Then, for improvement steps based on tree diagram analysis and PDPC on human factors, the addition of 6 roof ventilators and supervision during the pouring process, the training method factor for making molded sand dough according to SOP and providing standard capacity of cast liquid, the material factor for monitoring the quality of raw materials and replacing binder materials with bentonite. Keywords: DMAIC, Meanhole Cover and Frame, Six Sigma.

Item Type:	Thesis (Skripsi, Tugas Akhir or Kerja Praktek) (Tugas Akhir)
Subjects:	T Technology > TS Manufactures
Divisions:	Fakultas Sains dan Teknologi > S1 Teknik Industri
Depositing User:	Kaprodi S1 Teknik Industri UTY
Date Deposited:	01 Aug 2023 02:37
Last Modified:	01 Aug 2023 02:37
URI:	http://eprints.uty.ac.id/id/eprint/13287

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