METHOD FOR JOINTING HOT STEEL PRODUCTS,申请号JP19920037469-传众专利搜索

METHOD FOR JOINTING HOT STEEL PRODUCTS

申请公布号：JPH05245507(A)

申请号：JP19920037469

申请日期：1992.02.25

申请公布日期：1993.09.24

申请人：

SUMITOMO METAL IND LTD

发明人：YAHIRO AKITO

分类号：B21B1/26;B21B15/00;B23K20/00;B23K103/04;H05B3/00;(IPC1-7):B21B15/00

主分类号：B21B1/26

摘要：PURPOSE:To obtain a defectless joint part having high strength by energizing and heating the descaled joint part of both members held by a pair of upper and lower dies, then rolling down the members in the thickness direction. CONSTITUTION:The rear end of a preceding material 1-1 and the front end of a succeeding material 1-2 are respectively held by a pair of the upper and lower dies and the joint surfaces of the two materials are rubbed against each other in joining of hot worked steel products. The joint surfaces of the two materials are butted against the flanks of the dies and are rubbed to each other, by which the joint parts of the two materials are so disposed as to overlap slightly on each other in a longitudinal direction and are thereafter moved vertically to plastically deform the joint members. These members are thereby respectively descaled. The joint parts are heated by the front and rear dies as electrodes and the member are rolled down by these dies in the thickness direction, by which the members are jointed. The defectless joint of the hot worked steel products is thereby obtd.