EFFECT OF ROLL DIAMETER AND ROLLING SPEED IN ROLLING FOR FLATTENING AN ARC -SHAPED FGM

本研究建立了弧形功能梯度材料的轧制模型，并在相同或不同轧制速度和轧辊直径的不同条件下进行了弧形纯铝的轧制和Al-Al_3Ni功能梯度材料的热轧。在相同轧辊直径和不同轧辊速度、不同轧辊直径和相同轧辊速度、不同轧辊直径和不同RON速度的情况下，除相同的轧辊直径和轧辊速度外，弧形纯铝试件的曲率半径随着轧制次数的增加而增大。在所有条件下，弧形Al-Al_3Ni功能梯度材料的曲率半径均随轧制次数的增加而增大。在不同轧辊直径和相同轧辊速度下，在1%、2%、3%的拔深中，当接触投影长度的上辊与排辊长度之比为1.08时，可以将弧形的AI-Al_3Ni功能梯度材料变形为板材。因此，轧制工艺使得将弧形功能梯度材料变形为平板成为可能。控制上下辊径比和轧制速度。

In this study, the models for rolling process of flattening arc-shaped FGM to a sheet were exhibited and the rolling of an arc-shaped pure aluminum and the hot rolling of AI-AI_3Ni FGM were carried out on various conditions forsame or different roll speeds and roll diameters. A radius of curvature of an arc-shaped pure aluminum specimen becomes Large as rolling times in case of all of same roll diameter and different roll speeds, different roll diameters and same roll speed, different roll diameters and different ron speeds except for same roll diameter and roll speed. A radius of curvature of arc-shaped AI-AI_3Ni FGM specimen becomes large as rolling times in all conditions. It is possible to deform an arc-shaped AI-AI_3Ni FGM to the sheet in the conditions of the value of 1.08 of the ratio between upper and rower roll of contact projected length in 1, 2, 3 % draft in different roll diameters and same roll speed. Therefore, the rolling process has made it possible to deform the arc-shaped FGM to the flat plate. controlling the ratio between upper and Lower roll diameter and rolling speed.