B - Operations – Transporting – 21 – J
Patent
B - Operations, Transporting
21
J
B21J 5/10 (2006.01) B21D 28/24 (2006.01) B21D 47/02 (2006.01) B21H 8/00 (2006.01)
Patent
CA 2103002
A method of manufacturing a one piece integral metallic beam having flanges, and a web joining said flanges, the beam having been hot rolled from a heated metal workpiece 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 then passed through at least one metal forming die set, which is repeatedly closed on the web to form in the web without forming the flanges. The method may also include the piercing of opening through the web, and the forming of lips around the openings, and also, the forming of a secondary product from the discarded portion of the web, and also hot forging the lips 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.
Mccarthy Tetrault Llp
Rotary Press Systems Inc.
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