刘献达, 郝彦英, 刘运娜. Research and Application of Control Rolling and Cooling Technology in 49MnVS3 Non-Quenched and Tempered Steel for Crankshaft[J]. Special Steel, 2019, 40(4): 31-33.
刘献达, 郝彦英, 刘运娜. Research and Application of Control Rolling and Cooling Technology in 49MnVS3 Non-Quenched and Tempered Steel for Crankshaft[J]. Special Steel, 2019, 40(4): 31-33.DOI:
The production flowsheet of non-quenched and tempered steel 49MnVS3 (/% :0.47C
0.39Si
0.90Mn
0.016P
0.050S
0. 22Cr
0.09V
0.015Ti
0.011Al
0.02Ni) is pretreated hot-metal-60 t top and bottom combined brown converter-LF-VD-220 mm x300 mm bloom casting-contronled rolling and cooling
study the effect of contronled rolling and cooling process on microstructure and properties of non-quenched and tempered steel 49MnVS3. Test parameters of φ110 mm rolled products: heating temperature of 1150 - 1250℃
start rolling temperature 1050℃ and finishing temperature 850 ℃
70 Y/min cooling speed after rolling
cooling start temperature of 850 ℃
and the end temperature 500 ℃.Ilie results showed that the grain size of the test furnace was improved by 0.5 ~ 1.0 and the banded structure was reduced by 0.5 ~ 1.5
the hardness
strength and plasticity are improved
and a good match of strength and toughness is obtained.