In the paper, it is systematically elaborated the product defects when rolling H beam with universal pass as well as mainly discussed and analyzed from such two aspects as the steel defects and rolling defects of H beam aiming at the rolling process of H beam with universal pass in 1^# production line of Rail and Beam Rolling Plant of Baotou Steel. The steel defects include inclusions, scabs and cracks of product as well as rolling defects include dimension deviation, scratch and bending of product. The treatment methods and optimization measures are put forward according to different types of defects. The amount of waste products caused by unqualified H beam is reduced by taking such measures as reasonably controlling rolling reduction, optimizing guide and controlling rolling speed as well as optimizing control process. As a result, the first pass yield and yield of H beam are improved so that economic benefits are increased.

H beam  /  steel defect  /  rolling defect  /  optimize