在横轧前增加正火工序，改善钢的奥氏体晶粒度，消除混晶组织。
Normalization procedure was added before the transverse rolling for improving steel austenite grain fineness and removing mischcrystal structure.
带状组织、混晶现象严重导致变形强化系数偏高是造成轧制困难的主要原因。
Band structure and mixed crystal phenomenon seriously cause the deformation intensification coefficient too high, which is the main reason resulted in the difficult rolling.
结果表明，由于连杆锻后宽度尺寸不够，在增加了热矫形工序后造成其变形量处于临界变形区，导致分模面切边带区出现严重的混晶和魏氏组织。
The result showed hot sizing was the main factor to cause critical deformation, to make mixed grain and coarse grain widmanstatten appear in parting face.
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