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1. 发明申请

WO2005039792A8 A METHOD OF TREATING A METAL BILLET 审中-公开
标题翻译：一种处理金属床的方法
公开(公告)号：WO2005039792A8
公开(公告)日：2006-05-18
申请号：PCT/GB2004003961
申请日：2004-09-16
申请人： UNIV STRATHCLYDE , ROSOCHOWSKI ANDRZEJ
发明人： ROSOCHOWSKI ANDRZEJ
IPC分类号： B21C23/01 , B21J5/00
CPC分类号： B21C23/001 , B21C23/01
摘要： A method of treating a metal billet of pre-determined dimensions to change said billet's mechanical and/or physical properties by reducing the billet's grain size, the method involving subjecting the billet to plastic strain in three dimensions in a single operation. More specifically, the method involves forcing the billet through a first passage (1); forcing the billet from the first passage (1) into a second passage (2), the second passage (2) being consecutive with and inclined to the first passage (1), whereby the first and second passages (1 and 2) together define a first plane (4), and forcing the billet from said second passage (2) into a third passage (3), the third passage (3) being consecutive with and inclined to the second passage (2), whereby the second and third passages (2 and 3) together define a second plane (5), the second plane (5) being different from the first plane (4). As the billet exits the third passage (3) its grain size is reduced due to the billet having been subjected to plastic strain in three dimensions. Ideally, the dimensions of the billet on exiting the third passage (3) are substantially the same as the dimensions of the billet on entry to the first passage (1).
摘要翻译：一种处理预定尺寸的金属坯料的方法是通过减少钢坯的晶粒尺寸来改变所述钢坯的机械和/或物理性能，所述方法包括在一个操作中使坯料在三维中进行塑性应变。更具体地，该方法包括通过第一通道（1）迫使坯料。将所述坯料从所述第一通道（1）推入第二通道（2）中，所述第二通道（2）与所述第一通道（1）连续并且倾斜于所述第一通道（1），由此所述第一和第二通道（1和2）第一平面（4），并且将所述坯料从所述第二通道（2）推到第三通道（3）中，所述第三通道（3）与所述第二通道（2）连续并倾斜，由此所述第二和第三通道（2和3）共同限定第二平面（5），第二平面（5）不同于第一平面（4）。当坯料离开第三通道（3）时，由于坯料在三维中经受塑性应变，其晶粒尺寸减小。理想地，离开第三通道（3）的坯料的尺寸基本上与进入第一通道（1）时坯料的尺寸相同。

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