OPTIMASI SISTEM PROSES PRODUKSI DAN PEMASARAN PRODUK INDUSTRI KECIL DAN MENENGAH PENGECORAN KOMPONEN OTOMOTIF

The objectives of this research are to know the most marketable product and technically easy to be done mechanically high pressure die casting (HPDC), determining optimal production process and determine result of economy analysis in the small and medium industry of automotive component casting by applying method of HPDC. This research used two methods, market survey and experiment. Economic analysis was done by using Microsoft excel software to count five parameters namely net preset value (NPV), interneal rate of return (IRR), net benefit cost ratio (Net B/C), gross of benefit cost ratio (Gross B/C) and of profitability ratio (PR). The survey result of from market show that handle put on the brakes with mean sale of month is 52 items, but technical it considers technically it is difficult for making handle the rem so it makes adaptor disk of brake and lamp holder of megapro. The optimum process of die casting is with mold temperature 300oC, melt temperature 700oC, pressure 50 kg/cm2 and with mold temperature 350oC, melt temperature 750oC, pressure 75 kg/cm2 b by 24 hours production system. Results of economic analysis by five parameters are NPV, IRR, Net B/C Gross B/C and PR show that over minimum value so the moulding effort of otomotif component is visible to be achieved