| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.17 ( October 1987 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Al-killed Steel Plates for LPG Storage Tanks Ryoji Kinaka, Taketo Okumura, Hisae Terashima, Sho Minagawa, Yoshifumi Nakano, Shigeto Matsumoto |
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Synopsis : Investigation has been made on the properties of continuously cast 38 mm thick SLA37 steel plates for LPG storage tanks. The crack arrest toughness Kca of the steel plates manufactured by Kawasaki Thermomechanical Rolling (KTR) and Multipurpose Accelerated Cooling System (MACS) processes was higher than 600 kgf/mm3/2 at -50. In vertical MIG, TIG, SAW, and horizontal SAW of steel plates manufactured by the quenching and tempering (QT) process, and in EGW with a high weld heat input of 60-115 kJ/cm of QT, KTR, and MACS steel plates, bond properties measured at the fusion line of welded joints are 7 kgf.m and over in vE-50, 0.3 mm and over in -50 COD value, and 470 kgf/mm3/2 in Kca. The foregoing results prooved the technical feasibility of the production of SLA37 steel plate for LPG storage tanks by using the combination of continuous casting and QT, KTR and MACS processes. |
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