四辊轧机支承辊止推轴承烧损原因测试

Experimental Research of Cause for Burst of Thrust Bearing of 4-H Strip Mill

通过对武汉钢铁公司热轧带钢厂粗轧机（Ｒ２～Ｒ４）设备、工艺参数的综合测试研究，论述了四辊轧机辊系运动状态与辊系轴向力的关系，分析了辊系轴向力生成的原因和轴向力的大小。以实测数据为依据，讨论了支承辊止推轴承的实际负荷状况、破坏机理及工作寿命，提出了减少Ｒ２～Ｒ４轧机支承辊止推轴承烧损的可行措施。

A complex test about the parameters of technique and equipment has performed on roughing roll stands R_2 & R_4 of hot strip mill in WISCO.The rearch of it consists of the relationship between actual motion of rolls and axial forces of rolls on 4H-mills,the forming origins and values of axial forces.Depending on the test data,the actual loading,the mechanism of fracture and the working life of thrust bearing using for back up roll are explored,at the same time,some available steps are suggested to reduce the break of thrust bearings using for back up rolls on stands R_2& R_4.