发明公开
- 专利标题: RAIL PRODUCING METHOD AND PRODUCING EQUIPMENT
- 专利标题(中): 方法和设备做音乐
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申请号: EP02730813申请日: 2002-05-30
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公开(公告)号: EP1422007A4公开(公告)日: 2005-12-14
- 发明人: ONODERA NORIAKI , SHIBATA MASAFUMI , MIWA MASANORI , FUJITA KAZUO
- 申请人: NIPPON STEEL CORP
- 专利权人: NIPPON STEEL CORP
- 当前专利权人: NIPPON STEEL CORP
- 优先权: JP2001161676 2001-05-30
- 主分类号: B21B1/08
- IPC分类号: B21B1/08 ; B21B15/00 ; B21B38/00 ; B21B43/00 ; B21B45/02 ; B23D45/00 ; B23D45/10
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.
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IPC分类: