Analisis Proses Kapabilitas Produksi Pipa Electrical Resistance Welded (ERW) Jenis Perabot DI PT XYZ

Fatmawati, Binti (2015) Analisis Proses Kapabilitas Produksi Pipa Electrical Resistance Welded (ERW) Jenis Perabot DI PT XYZ. Diploma thesis, Institut Technology Sepuluh Nopember.

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Abstract

Salah satu metode untuk memonitor proses produksi dengan diagram kontrol adalah dengan Statistical Process Control (SPC). PT XYZ merupakan produsen pipa baja terbesar di Indonesia berdasarkan kapasitas produksi. Meskipun sudah melakukan perbaikan. kualitas, tetap masih ada produk yang cacat karena tidak memenuhi karakteristik kualitas. Pada penelitian ini akan dilakukan pengendalian kualitas produksi pipa ERW jenis pipa perabot di PT XYZ menggunakan peta kendali p untuk proporsi cacat dan peta kendali u untuk jumlah cacat hingga proses terkendali dan dianalisa kapabilitas proses. Kemudian jenis cacat yang menjadi penyebab dominan ketidaksesuaian dengan diagram pareto serta penyebab dari ketidaksesuiana tersebut. Proses produksiberdasarkan karakteristik kecacatan Juli 2014 menunjukkan pada periode tersebut terjadi penurunan kualitas pda mesil MILL. Hasil analisis menunjukkan bahwa nilai ˆ %PK p sebesar 0,6082; 0,62358; dan 0,23683 untuk peta p dan 0,35698untuk peta u yang berarti proses belum kapabel. Berdasarkan diagram paerto, jenis cacat yang paling mendominasi pada produksi pipa ERW jenis perabot adalah cacat bengkok. Adapun penyebabnya adalah human eror, material strip kurang bagus, posisi roll berubah, las kasar, dan setel roll serta setel welded. ====================================================================================================== One method to monitor production processes with control charts is the Statistical Process Control (SPC). PT XYZ is the largest steel pipe manufacturer in Indonesia based on production capacity. Although already make improvements. quality, there are still a defective product because it does not meet the quality characteristics. This research will be conducted ERW pipe production quality control type of plumbing fixtures in PT XYZ using u control chart to the process control and process capability analysis. Then the types of defects that become dominant cause incompatibility with the Pareto diagram and the causes of the conformities. The production process is based on the characteristics of disability in the period from July 2014 show that a decline in the quality of MILL machine. The analysis showed that the value of 0.35698 <1 which means that the process is not capable. Based on the diagram paerto, the most dominating type of defect in the production of ERW pipe is deformed crooked type furnishings. As for the cause was human error, lack of good material strip, roll changing position, welding rough, and set the roll and set welded.

Item Type: Thesis (Diploma)
Additional Information: RSSt 519.86 Fat a
Uncontrolled Keywords: SPC, Diagram Kontrol, Proses Kapabilitas, Diagram Pareto, Pipa ERW
Subjects: H Social Sciences > HA Statistics > HA29 Theory and method of social science statistics
T Technology > TS Manufactures > TS156 Quality Control. QFD
Divisions: Faculty of Mathematics and Science > Statistics > (D3) Diploma
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 03 Dec 2018 04:29
Last Modified: 03 Dec 2018 04:29
URI: http://repository.its.ac.id/id/eprint/60064

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