Taguci Lose Function Pada Uji Beda Proses Hardbait Perbaikan Spray Painting

Abstract

The more detailed the manufacturing process, the more consistent operations will be with the hope of producingbetter products according to their characteristics. The problems found by the researchers were the high rejects inthe form of uneven colors, poor color resistance of harbait, unbalanced working baits and imperfect dimensionsand shapes of harbait. This study uses the Taguchi method by showing which parts do not work optimally bypaying attention to the quality that deviates from the target value so that it can reduce costs and resources to aminimum. The Taguchi methodologywas carried out basedon the Taguchi experimental plan, in addition tousing the different paired sample t-test to determine the difference before and after improvement. The samplingtechniqueused was purposingsampling technique. Data weretakenwithcertaincriteria, specifically for hardbaidproducts, for a certain period of 35time at 07:00 WIB on the first shift of the spray painting department worker.Analysis by calculating the value of loss in qualitywithout having to update a quality function according to itscharacteristics. The product quality loss function is carried out using the Taguchi Loss calculation. Cases afterrepairs earned Rp. 11,927,00/pcs. So thedifference between the average increase beforeand after is Rp 5,389/Psc.In the paired sample t test, there are differences before and after repair. Furthermore, a relationship test will becarried out by looking at the results of the correlation paired output resulting in no relationship beforeand aftertherepair.Meanwhile,identificationofcausesandeffectsofdecreasedproductivityusingFishbonediagrams.