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

本文建立了弧形功能梯度材料压扁成板的轧制过程模型，并在相同或不同辊速和辊径的条件下，对弧形纯铝和Al-Al_3 Ni功能梯度材料进行了轧制实验。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罗恩速度（除相同轧辊直径和轧辊速度外）的情况下，弧形纯铝试样的曲率半径随着轧制次数而变大。圆弧形Al-Al_3 Ni FGM试样的曲率半径随轧制次数的增加而增大。在不同的辊径和相同的辊速下，在1、2、3%压下率下，上、下辊接触伸出长度比为1.08时，可以将弧形Al-Al_3 Ni梯度功能材料变形为板材。因此，轧制工艺使得可以将弧形FGM变形为平板。控制上、下轧辊直径比和轧制速度。

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.