PROPOSED PRODUCT DEFECT REDUCTION USING SIX SIGMA METHODOLOGY (A CASE STUDY OF PT. IND)

• Main Author: Raja Dijaya, Indra
• Format: Theses
• Language: Indonesia
• Subjects: Manajemen umum
• Online Access: https://digilib.itb.ac.id/gdl/view/53543
• Institution: Institut Teknologi Bandung

PT IND is a company engaged in manufacturing that produces automotive products and is one of the largest in Indonesia. The demand for automotive products in Indonesia is increasing and this is a promising opportunity for this industry. The increase in automotive products in the market will certainly provide benefits to the company, but the increase in automotive products should also be the company taking continuous corrective actions, especially in matters of maintaining the quality of components used for automotive products. In actual conditions the problem faced by the company is maintaining the quality of the components that will be used in automotive products, especially Wheel Disks. PT. XY is the main supplier for Wheel disk components, wheel disk components have a high percentage of Product defects. The defect found is a visual defect. If this condition is allowed to greatly affect the production line when the Wheel disk process is installed with tires. This study aims to analyze and find solutions and provide effective improvements in solving this problem. The method used is to use a framework from Lean Six Sigma where the approach uses DMAIC (Determine, Measure, Analyze, Improve, Control). Based on the problems faced by the company at the Define stage, the author uses initial identification with Voice of Customer to see the hopes and desires of the supplier side, as well as from the PT. IND then identifies the entire business process from start to finish using the SIPOC DIAGRAM. In the Measure stage, identify the entire process in the Supplier (PT. XY) and PT.IND to see the possibility of a problem. Then the next stage is Analyze after determining the potential problem, do an analysis to find the root of the problem using the Whys analysis method. Then the next step is Improve cleaning maintenance check sheet Masking gauge checks sheet, SOP revision, and periodical training for operators at PT. XY and at PT. IND Create Visual Limit and arrival check sheet. For the Control stage, a monitoring check sheet is made which is used during the audit to the supplier as a guide and the Incoming Check sheet makes it easier when part wheel disk arriving at PT. IND what things need to be checked and the record mechanism.