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首先确定所需压力的大小，主要取决于以下几方面：被矫钢材的品种、规格；待矫轧件的原始弯曲程度；待矫轧件的终轧温度；被矫轧件的机械性能；矫直温度等。

First, determine the size of the required pressure, which mainly depends on the following aspects: the varieties and specificati*** of the straightened steel, the original bending degree of the rolled piece, the finishing temperature of the rolled piece, the mechanical properties of the leveled piece, the straightening temperature and so on.

优化水量，优化步距。尽可能的使型钢完整进入水区，加强现场通风，保证型钢进入水区前温度小于400℃。水冷时间不宜过长，因为冷却时翼缘为拉伸—压缩—拉伸过程.

Optimize the amount of water and optimize the step distance. As far , the steel can be fully entered into the water area, and the field ventilation is strengthened. The temperature of the steel before entering the water area is less than 400. The time of water cooling should not be too long, because the flange of the wing is stretched, compressed and stretched.

侧壁斜度超差产生的原因为：

（1）辊型不正；压力过大，型钢与矫直辊间隙过小。

（2）辊子磨损、矫直机轴窜动过大，液压螺母没有锁紧或者止推轴承磨损过大都会引起侧壁斜度超差。

The reas*** for the deviation of the side wall slope are:

(1) the roll type is not correct; the pressure is too large and the gap between the type steel and the straightening roller is too ***all.

(2) the roller wears, the straightening machine shaft moves too big, the hydraulic nut is not locked or the thrust bearing wear too much will cause the side wall slope to exceed the difference.