Title:
【発明の名称】熱間圧延された梁および製造方法
Document Type and Number:
Japanese Patent JPH09509614
Kind Code:
A
Abstract:
PCT No. PCT/CA94/00620 Sec. 371 Date May 9, 1996 Sec. 102(e) Date May 9, 1996 PCT Filed Nov. 8, 1994 PCT Pub. No. WO95/13151 PCT Pub. Date May 18, 1995A method of manufacturing a one piece integral metallic beam (22) having flanges (24), and a web (26) joining said flanges, the beam having been hot rolled from a heated metal workpiece (20) to produce an integral one piece beam having flanges and a web extending therebetween, the flanges having a predetermined first thickness, and the web having a predetermined second thickness less than the first thickness, and in which the web is heated to a hot forming temperature, without substantially heating the flanges and, the web is than passed through at least one metal forming die set (16), which is repeatedly closed on the web to form the web without forming the flanges. The method may also include the piercing of openings (28) through the web, and the forming of lips (30) around the openings, and also, the forming of a secondary product (52) from the portion of the web discarded from the opening, and also hot forging the lips (30) around the openings. Also disclosed is apparatus for carrying out the method, and a forming and forging die for both forming and forging a metal workpiece.
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Inventors:
Bodner, Ernest Earl.
Application Number:
JP51289595A
Publication Date:
September 30, 1997
Filing Date:
November 08, 1994
Export Citation:
Assignee:
Bodner, Ernest Earl.
International Classes:
B21D28/24; B21D47/02; B21H8/00; B21D28/32; (IPC1-7): B21D47/02; B21H8/00; B21D28/32
Attorney, Agent or Firm:
Shusaku Yamamoto