Single-frame heavy-medium plate mill nose control method

The invention discloses a single-frame heavy-medium plate mill nose control method. The method judges if the thickness of a steel plate with a rolling pass reaches the heating thickness of an intermediate blank on a single-frame heavy-medium plate mill and if the head is turned up; if so, two leveling passes are added after the pass; and the purpose of adding the two leveling passes is to level the turned head of the steel plate, to guarantee the rolling reduction of each pass in the finish rolling phase to be consistent with normal rolling and to guarantee stable and consistent product performances. The method can effectively control the head turning condition of the steel plate; the head and tail cracks are reduced by above 50%; after an arc of a non-sizing plate is cut off, the rest parts can serve as finished products; the head and tail shearing sizes are further reduced; and the yield is improved by about 0.5%. 本发明是种单机架中厚板轧机翘头控制方法，在单机架中厚板轧机上判断是否有轧制道次的钢板厚度到达中间坯待温厚度，并且头部有翘头现象，若有，则在此道次后增加两个平整道次；增加两个平整道次的目的是