| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.17 ( October 1987 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Production of Heavy-Gauge Steel Plates Suitable for High-Heat Input Welding in the Arctic Region Shin-ichi Deshimaru, Ikuo Hirai, Kenichi Amano, Syuzo Ueda, Takashi Uemura, Kazuya Tsubota |
|
Synopsis : For application to the energy resources development in the Arctic region, the YP 36 kgf/mm2 class structural steel plates (maximum 70 mm in thickness), which have high toughness for high heat input welding, have been developed and manufactured using the multipurpose accelerated cooling system (MACS). This steel contains a small amount of Nb for the purpose of reducing C and Mn contents. Its carbon equivalent is reduced by utilizing MACS and its mechanical properties have satisfied the EH36 steel grade. For the each-side one-pass welding joint with a heat input of 130 kJ/cm, vE-60 is more than 10 kgf.m at any notch position. The preheating temperature for crack prevention has been confirmed to be below 0 by the Y-groove restraint test. |
| TextiPDF: 7p./306kbj |