铝厚板梯温剪切轧制变形研究

Study of Deformation of Aluminium Thick Plate During Gradient Temperature Shear Rolling

传统对称轧制工艺常造成铝厚板表面变形大和中心变形小的不均匀分布,阻碍了高性能厚铝板的生产。为解决此问题,结合异速比和梯度温度,采用梯温剪切轧制的新方法,分析该型式下铝厚板的变形分布特性,并对比了不同轧制型式下等效应变和剪切应变分布。结果表明,梯温剪切轧制中板中心点的变形明显大于对称轧制,变形均匀性显著提升。

The conventional symmetrical rolling usually resuits in inhomogeneity distribution of large deformation on the surface and small deformation in the central,which hinders the high performance thick aluminum plate from producing.To solve this problem,this paper uses a new method of gradient temperature shear rolling to analyze,the deformation distribution characteristics of this plate under the condifions of speed ratio and temperature gratient,and the equivalent strain the shear strain distribution under different rolling patterns distribution is compared with.The results show that the deformation of the center point of the plate during gradient temperature shear rolling is significantly larger than that of the symmetric rolling,and the deformation homogeneity is significantly improved.