TY - GEN
T1 - Simulative testing of friction and lubrication in cold forging of steel and aluminum
AU - Ceron, Ermanno
AU - Bay, Niels
AU - Aida, Tetsuo
AU - Dohda, Kuniaki
AU - Nicolaisen, Tor Erik
PY - 2012
Y1 - 2012
N2 - A new, simulative test of friction and lubrication in cold forging is developed by the authors. The test is based on a backward can extrusion process in which the workpiece rotates relatively to the conical punch. An analytical model is presented determining the friction stress from the measured torque during testing combined with an analysis of the sliding velocity distribution along the punch nose. The latter is determined by FE analysis of the test. Results show friction stress for unalloyed low C-steel provided with different types of lubricants, i.e. phosphate coating plus soap, phosphate coating plus MoS2 and single bathe lubrication with PULS and aluminum provided with 6 different lubricant systems. The new test is so severe, that it is possible to break down the best lubrication systems for cold forging of steel and aluminum.
AB - A new, simulative test of friction and lubrication in cold forging is developed by the authors. The test is based on a backward can extrusion process in which the workpiece rotates relatively to the conical punch. An analytical model is presented determining the friction stress from the measured torque during testing combined with an analysis of the sliding velocity distribution along the punch nose. The latter is determined by FE analysis of the test. Results show friction stress for unalloyed low C-steel provided with different types of lubricants, i.e. phosphate coating plus soap, phosphate coating plus MoS2 and single bathe lubrication with PULS and aluminum provided with 6 different lubricant systems. The new test is so severe, that it is possible to break down the best lubrication systems for cold forging of steel and aluminum.
KW - Backward can extrusion
KW - Cold forging
KW - Friction
KW - Limits of lubrication
UR - http://www.scopus.com/inward/record.url?scp=84869818117&partnerID=8YFLogxK
M3 - 会議への寄与
AN - SCOPUS:84869818117
SN - 9781622762477
T3 - Transactions of the North American Manufacturing Research Institution of SME
SP - 287
EP - 296
BT - 40th North American Manufacturing Research Conference 2012 - Transactions of the North American Manufacturing Research Institution of SME
T2 - 40th Annual North American Manufacturing Research Conference, NAMRC40
Y2 - 4 June 2012 through 8 June 2012
ER -