Effect of hot-rolling technology on surface chromatic aberration defects for Ti precipitation strengthened steel
YANG Jun1，GAO Jian-hong1，YANG Qi-yu2
（1. Hot Rolling Plant，Baoshan Iron and Steel Co.， Ltd.， Shanghai 200941， China 2. Manufacturing Management department，Baoshan Iron and Steel Co.， Ltd.， Shanghai 200941， China）
Abstract：The surface chromatic aberration of precipitated steel with high Ti content in cold rolling affects surface quality. The effect and mechanism of hot rolling technology on surface chromatic aberration was discussed. The surface chromatic aberration is caused by the difference of grain size on the surface of the strip. In the process of hot rolling，the precipitation of Ti phase particles in the surface is different，which makes the grain refinement different in the annealing process and causes the surface chromatic aberration. The tests about the effect of different finish rolling temperatures and coiling temperature on surface chromatic aberration show that the low rolling temperature is conducive to the improvement of chromatic aberration defects，but the coiling temperature on the surface chromatic aberration is not obvious，and the best finish rolling temperature is 860 ℃.
杨 军，高建红，杨启宇. 热轧工艺对钛析出强化钢表面色差的影响[J]. , 2018, 53(2): 45-49.
YANG Jun，GAO Jian-hong，YANG Qi-yu. Effect of hot-rolling technology on surface chromatic aberration defects for Ti precipitation strengthened steel. Iron and Steel, 2018, 53(2): 45-49.
2018, Vol. 53 
