The continuous cooling transformation ( CCT) curves of 05. 5 mm wire of high carbon steel 82A (% : 0. 81C
0. 50Mn
0. 21 Si
0. 007P
0. 006S) with cooling rate 0. 8 ~ 40 /s are measured by Gleeble 1500 thermal simulation machine
and fitting in with real phase transformation temperature calculated by measured cooling curves at production situ
the correcting dynamic CCT curves to meet the production situation are obtained. Combined the basic model for control-rooling process of high speed rolled wire
it is obtained that the available reeling temperature of wire-rod of steel 82A is 910 ~930 ℃
and the optimum cooling rate during phase transformation process is 9 ~ 12 ℃/s.