This paper presents a warm-forging process for the manufacture of an aluminium alloy differential case in an automobile, which has usually been produced from ductile cast iron. In order to replace the conventional ductile cast iron with a lightweight material in the differential case, aluminium alloy 6082 is utilized in the proposed warm-forging process, which is then analysed by numerical simulations using DEFORM-3D. Experimental warm forging using aluminium alloy 6082 was conducted in a 1600 tonf press shop to evaluate the proposed design in the die and the punch as well as the forgeability of the aluminium alloy differential case. The as-forged aluminium alloy differential case not only provides a net shape but also has a crack-free volume internally, while reducing the total weight by about 40% based on the proposed design.
KimHRSeoMGBaeWB. A study of the manufacturing of tie-rod ends with casting/forging process. J Mater Process Technol2002; 125–126: 471–476.
2.
KimHHKangCG. Vacuum-assisted rheo-forging process of A356 aluminum alloys. Int J Mach Tool Mf2008; 48: 1626–1636.
3.
YoonJHLeeJSLeeJH. Enhancement of the microstructure and mechanical properties in as-forged Mg–8Al–0.5Zn alloy using T5 heat treatment. Mater Sci Engng A2013; 586: 306–312.
4.
KongYSKangDMKimTWKwakJS. Development of acoustic emission signal parameter and its application for strength estimation of friction welded joints. Int J Precision Engng Mfg2013; 14; 10: 1783–1789.
5.
ParkJHKimKJ. Optimal design of camber link component for light weight automobile using CAE (computer aided engineering). Int J Precision Engng Mfg2013; 14; 8: 1433–1437.
6.
KimYHRyouTKChoiHJHwangBB. An analysis of the forging processes for 6061 aluminum-alloy wheels. J Mater Process Technol2002; 123: 270–276.
7.
KwonYNLeeYSLeeJH. Deformation behavior of Al–Mg–Si alloy at the elevated temperature. J Mater Process Technol2007; 187–188: 533–536.
8.
DursunTSoutisC. Recent developments in advanced aircraft aluminium alloys. Mater Des2014; 56: 862–871.
9.
YoonJHParkSH. Forgeability test of extruded Mg–Sn–Al–Zn alloys under warm forming conditions. Mater Des2014; 55: 300–308.
10.
KimWYKangCGKimBM. The effect of the solid fraction on rheological behavior of wrought aluminum alloys in incremental compression experiments. Mater Sci Engng A2007; 447: 1–10.
11.
FujikawaSKitamuraYShimamuraS. Application of numerical methods for the aluminum casting/forging process. J Mater Processing Technol1991; 27: 93–110.
12.
PetrovPPerfilovVStebunovS. Prevention of lap formation in near net shape isothermal forging technology of part of irregular shape made of aluminium alloy A92618. J Mater Processing Technol2006; 177: 218–223.
13.
KangCGChoiJSKangDW. A filling analysis of the forging process of semi-solid aluminum materials considering solidification phenomena. J Mater Processing Technol1998; 73: 289–302.
14.
ShanDBWangZLuYXueKM. Study on isothermal precision forging technology for a cylindrical aluminium-alloy housing. J Mater Processing Technol1997; 72: 403–406.
15.
YoshimuraHTanakaK. Precision forging of aluminum and steel. J Mater Processing Technol2000; 98: 196–204.
16.
ForcelleseAGabrielliF. Warm forging of aluminium alloys: a new approach for time compression of the forging sequenceInt J Mach Tool Mf2000; 40: 1285–1297.
17.
NarayanasamyRBaskaranKArunachalamSMurali KrishnaD. An experimental investigation on barreling of aluminium alloy billets during extrusion forging using different lubricants. Mater Des2008; 29: 2076–2088.
18.
KangSGNaYSParkKY. A study on the micro-formability of Al 5083 superplastic alloy using micro-forging method. Mater Sci Engng A2007; 449–451: 338–342.
19.
PuertasIPerezCJLSalcedoD. Design and mechanical property analysis of AA1050 turbine blades manufactured by equal channel angular extrusion and isothermal forging. Mater Des2013; 52: 774–784.
20.
GrochePWohletzSErbeAAltinA. Effect of the primary heat treatment on the bond formation in cold welding of aluminum and steel by cold forging. J Mater Processing Technol2004; 214; 2040–2048.
21.
SamołykG. Investigation of the cold orbital forging process of an AlMgSi alloy bevel gear. J Mater Processing Technol2013; 213: 1692–1702.
22.
YoonJHLeeJH. Process design of warm-forging with extruded Mg–8Al–0.5Zn alloy for differential case in automobile transmission. Int J Precision Engng Mfg2015; 16: 841–846.
23.
Nageswara RaoPSinghDJayaganthanR. Mechanical properties and microstructural evolution of Al 6061 alloy processed by multidirectional forging at liquid nitrogen temperature. Mater Des2014; 56: 97–104.
24.
DamKPrusaFVojtechD. Structural and mechanical characteristics of the Al–23Si–8Fe–5Mn alloy prepared by combination of centrifugal spraying and hot die forging. Mater Sci Engng A2014; 610: 197–202.
25.
ChoiYKimDUKangBY. Forming of the precision aluminum tube for a light weight propeller shaft. J Mech Sci Technol2013; 27: 3445–3449.
26.
SrinivasuluMKomaraiahMKrishna Prasada RaoCS. Prediction of the surface roughness of AA6082 flow-formed tubes by design of experiments. J Mech Sci Technol2013; 27: 1835–1842.
