冷轧无取向硅钢片反复弯曲试验的影响因素

试验了弯曲圆弧半径(2.5～7.5 mm)、拉紧力(20～80 N)和试样轧制方向对进口冷轧无取向硅钢片反复弯曲次数的影响。结果表明,弯曲圆弧半径R为5 mm时,随拉紧力由20 N增加到60 N,纵向试样的反复弯曲次数由24次降低到11次,当拉紧力由60 N增至80 N时,反复弯曲次数不变;拉紧力为60 N时,弯曲圆弧半径R由2.5 mm增至7.5 mm时,纵向试样的平均反复弯曲次数由6.5次增加到20.7次。纵向试样的反复弯曲次数较横向试样高6.6%～22.7%。

Influence Factors on Reverse Bend Test of Cold Rolled Non-Orientation Silicon Steel Sheet

The effect of bending radius(2.5~7.5 mm),tension load(20～80 N)and rolling direction of specimen on reversed bending times of imported cold rolled non-orientation silicon steel sheet has been tested. Results showed that as bending radius R was 5 mm,with increasing tension load from 20 N to 60 N,the reversed bending times of longitudinal specimen decreased from 24 to11,and with increasing tension load from 60 N to 80 N,the reversed bending times was constant; and as tension load was 60 N,with increasing bending radius R from2.5 mm to 7.5 mm,the average reversed bending times of longitudinal specimen increased from 6.5 to20.7.The reversed bending times of longitudinal specimen was higher than that of transverse specimen by 6.6%~22.7%.