公开(公告)号：EP1422007A4

公开(公告)日：2005-12-14

申请号：EP02730813

申请日：2002-05-30

申请人： NIPPON STEEL CORP

发明人： ONODERA NORIAKI ,  SHIBATA MASAFUMI ,  MIWA MASANORI ,  FUJITA KAZUO

IPC分类号： B21B1/08 ,  B21B15/00 ,  B21B38/00 ,  B21B43/00 ,  B21B45/02 ,  B23D45/00 ,  B23D45/10

CPC分类号： B21B15/0007 ,  B21B1/085 ,  B21B38/00 ,  B21B43/00 ,  B21B2015/0014 ,  B21B2015/0071 ,  B21B2045/0212 ,  B23D45/003 ,  B23D45/10 ,  Y10T29/49989 ,  Y10T29/49991 ,  Y10T29/5184 ,  Y10T83/6588 ,  Y10T83/659

摘要： A rail producing method and producing equipment capable of effectively reducing bending at the ends of a rail and also cut−away waste, the rail producing method being characterized by comprising the steps of cooling a hot−rolled rail to room temperature while being kept at a substantially rolled length, and then cutting it to a specified length by at least three cold sawing−off machines simultaneously. Rail producing equipment characterized by comprising a conveying bed capable of moving a rail, cooled to room temperature while being kept at a substantially rolled length, in a rolling direction and/or a direction perpendicular to the rolling direction, and at least three cold sawing−off machines juxtaposed to the conveying bed.