| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.17 ( October 1987 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Development and Manufacture of Low PCM, High Toughness Steel Plates for API 5L-X60 UO Pipe Shigehiko Yoshimura, Kenichi Amano, Takashi Uemura, Hiroshi Nishizaki, Yoshiyuki Saito, Makoto Sekizawa |
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Synopsis : A steel was developed and applied to the production of plates for UOE line pipes which are used to transport sour oil in the North Sea. The steel plates 22.2 to 38.1 mm thick were made of API 5L-X60 and weigh 50 000 tons in total. The most critical and the most difficult requirements to be met follow: The PCM which is an indicator of the susceptibility to weld cracking should be as low as 0.150% for plates 22.2 and 23.8 mm thick. These requirements were unable to be satisfied by the ordinary manufacturing process. Only the thermomechanical control process (TMCP) and the fine steel making process were able to do it. The present paper describes the details of the steel plate manufacturing processes and the properties obtained. |
| TextiPDF: 8p./357kbj |