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根据连续退火生产实际情况,运用MARC有限元软件,定量计算了连退炉内双锥度辊辊形参数对带钢瓢曲的影响.模拟发现在双锥度辊锥肩处,带钢张应力和横向应力发生突变,并且带钢横向压应力和等效应力都具有最大值,此处最先发生瓢曲变形,这与现场观测到的带钢瓢曲出现的位置完全吻合.随着总锥度和锥度比的增大,以及平直段长度和直径的减少,带钢发生瓢曲变形的概率都会增加.其中平直段长度对带钢发生瓢曲变形的影响最大,总锥度和锥度比其次,平直段直径的影响最小.
According to the actual situation of continuous annealing production, using MARC finite element software, the influence of the double conical roll roll parameters on the strip bending is quantitatively calculated.The results show that in the double taper roll taper shoulders, the strip tensile stress and transverse The stress is abrupt, and the lateral compressive stress and equivalent stress of the strip all have the maximum value, and the first bending deformation happens here, which is in good agreement with the observed spot position of the strip in the field.With the total taper and taper The increase of the ratio and the decrease of the length and the diameter of the straight section will increase the probability of the strip bending deformation.The flat section length has the greatest effect on the strip bending deformation and the total taper and taper ratio are the second The effect of straight section diameter is the smallest.