• 主题
高级搜索  >
历史搜索 清空历史
首页> 外国专利> FABRICATION METHOD OF COLD-ROLLED PIPES OF LARGE AND MEAN DIAMETRES FROM DIFFICULT-TO-FORM GRADES OF STEEL AND ALLOYS WITH INCREASED WALL ACCURACY

FABRICATION METHOD OF COLD-ROLLED PIPES OF LARGE AND MEAN DIAMETRES FROM DIFFICULT-TO-FORM GRADES OF STEEL AND ALLOYS WITH INCREASED WALL ACCURACY

机译：从壁厚精度提高的钢和合金的难加工品级到大直径和中直径冷轧管的制造方法

页面导航
  • 摘要
  • 著录项
  • 相似文献

摘要

FIELD: metallurgy.;SUBSTANCE: method involves shaping of plate workpiece on roll mills to tube workpiece in order to roll commercial or conversion tubes of large diametre, welding of longitudinal edges by consumable electrode under flux layer, removal of weld reinforcement from external and internal surface of conversion tube, heat treatment of conversion longitudinal welded tube workpiece and rolling on a conical holder in gauges with variable radius; at that, conversion tube workpiece is rolled to commercial cold-rolled tube in one or several rolls with total drawing of not less than 1.2. Cold-rolled tubes are made in several passes; at that, absolute wall crimping during the first pass is taken equal to 1-2 mm, and weld reinforcement is removed by local dressing not throughout the length of the tube, but from external and internal surface from the front tube end as to the rolling at the length of 100-150 mm from the edge with smooth transition at the length of 10-15 mm.;EFFECT: invention decreases labour intensity of preparation of electric welded workpiece for the rolling by 5-6 times.;1 tbl
机译：领域：冶金学;方法：该方法涉及将轧机上的板状工件成型为管件，以便轧制大直径的商业或转换管，通过焊剂层下的可消耗电极焊接纵向边缘，从内部和外部去除焊接钢筋转换管表面，对转换纵向焊接管工件进行热处理，并在变径规的圆锥形支架上滚动;此时，将转化管工件以一或几辊的形式轧制成商用冷轧管，总牵伸不少于1.2。冷轧管分多次通过;这样，在第一道焊道中的绝对壁压接应等于1-2 mm，并通过局部修整去除焊缝增强层，而不是在整个管子的整个长度上，而是从前管端部的内外表面开始进行轧制在距离边缘100-150 mm的长度处以10-15 mm的长度平滑过渡;效果：本发明将准备轧制电焊工件的劳动强度降低了5-6倍。1tbl

著录项

相似文献

  • 专利
  • 外文文献
  • 中文文献
获取专利

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号