Study of Piston Making Based on Waste Piston Material Reinforced With Stainless Steel

摘要

The use of aluminum in the automotive industry continued to increase since the udyear 1980, in particular aluminum alloy used for the manufacture of pistons, engine udblocks, cylinder heads and valves. In this study uses the former gasoline engine piston udwaste recycled into the piston Daihatsu Hi-Jet 1000with the addition of ADC 12 and insert udST 60 and cast iron. Former Piston who has the composition 84.19 wt% Al, 10,7 wt% Si, udplus material ADC 12 with insert stainless steel which is used as a ring groove piston with udgravity casting process in the pouring temperature of 700udoudC udThe specimens obtained from the casting material above which is a prototype of the udpiston with insert. The results include the test composition, microstructure, macro-and udmicro-hardness, shear test. The results of the most high-Si alloy composition on the udcomposition of 25% piston former plus 75% ADC 12 and ADC 12 pure. Show the bonding udof microstructure morphology best at the lowest temperature pouring with insert stainless udsteel that has the smallest layer interface and a good bond. Macro and micro hardness udADC 12 hardness highest on the composition of pure and pouring temperature of 700udoudC udwith hardness 156,1 HVN and 81,4HRB. The highest shear strength of 28,50 MPa at udstainless steel pouring temperature of 700udoudC..