Manufacturing Continuous Improvement of Busbar Product Using Six Sigma Approach in PT Sutrakabel Intimandiri

JIHAN, NABILA (2021) Manufacturing Continuous Improvement of Busbar Product Using Six Sigma Approach in PT Sutrakabel Intimandiri. Other thesis, Universitas Andalas.

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Abstract

ABSTRACT Sutrado Kabel (PT Sutrakabel Intimandiri) is a manufacturing company engaged in the production of cables and conductors. PT Sutrakabel Intimandiri produces various types of cables and conductors such as busbars. Busbar is a copper bar used to distribute electric power. The problem that occurs at PT Sutrakabel Intimandiri is that there are still reject products in the busbar production The reject criteria found are as follows: bent busbar, scratched visual, oxidized visual, cracked visual during bending test. This research was conducted with the aim of reducing the total rejects in busbar products by proposing improvements to the busbar production process by applying the six sigma method. The data used in this study consisted of primary data (results of discussions with production managers, quality control managers and engineering staff and research in field) and secondary data (types and total rejects within 21 months). The result of this research is that the proposed quality improvement for the busbar production process is obtained so that the company can reduce the number of defective products and improve product quality. Based on the results of data processing that has been done using the six sigma method, it is found that at the define stage scratched busbar and bent busbar are the dominant type of busbar that will be improved in this research. At the measure stage, the company sigma value is 3.607. Analyze the stage of the root causes of each defect and obtain the RPN value from FMEA analysis. In the improvement stage, a proposal for improving the production process was obtained by giving a sponge or filter when spraying on the drawbench machine, replacing the filter or sponge once a month, proposing checking for lubricant water before use in drawbench instruction work, and making instruction work. Keywords: Quality Control, Six sigma, Busbar, FMEA, PT Sutrakabel Intimandiri.

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