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2. 发明公开

EP2018929A1 WELDED STRUCTURE EXCELLENT IN BRITTLE-CRACKING PROPAGATION STOPPING CHARACTERISTICS 有权转让
标题翻译：焊接结构具有良好的脆性传播停止特性
公开(公告)号：EP2018929A1
公开(公告)日：2009-01-28
申请号：EP07743252.4
申请日：2007-05-08
申请人： JFE Steel Corporation , IHI Marine United Inc.
发明人： HANDA, Tsunehisa , KUBO, Takahiro , KAWABATA, Fumimaru , MURAOKA, Ryuji , SHIOMI, Hiroshi , NAKAJIMA, Yoshiyuki , TOYODA, Masanobu , NAKANISHI, Yasumasa , KIJI, Noboru
IPC分类号： B23K9/02 , B23K9/00 , B63B3/34
CPC分类号： B23K33/004 , B23K33/00 , F16L57/02
摘要： A welded structure with high brittle crack arrestability suitable for a hull structure is provided. The welded structure includes a fillet weld joint 9 having an unwelded part 4 in a butting face between a web 1 and a flange 2. Preferably, a width n of the unwelded part 4 of the fillet weld joint 9 in the cross section thereof, the ratio X(%) of the width n to the sum L of a plate thickness t of the web 1 and leg lengths 3 (3a and 3b) of fillet weld metal at the left and right, and the brittle crack arresting toughness Kca (N/mm 3/2 ) of the flange at a service temperature satisfy the following expression: X (%) ≥ {5900 - Kca (N/mm 3/2 )}/85. More preferably, the width of the unwelded part 4 of the fillet weld joint 9 is in the range of 15% to 90% of the sum L of the plate thickness t of the web 1 and the leg lengths 3 (3a and 3b) of the fillet weld metal at the left and right. If the web 1 has a butt joint 11, the ratio X(%) of the width to the sum L of the plate thickness t of the web 1 at the butt joint 11 thereof and the leg lengths 3 (3a and 3b) of the fillet weld metal at the left and right and the brittle crack arresting toughness Kca (N/mm 3/2 ) of the flange 2 at the service temperature satisfy the above expression.
摘要翻译：提供了一种适合于船体结构的具有高脆性止裂性的焊接结构。该焊接结构包括在腹板1和凸缘2之间的对接面中具有未焊接部分4的角焊接头9.优选地，角焊接头9的未焊接部分4在其横截面中的宽度n，宽度n相对于腹板1的板厚t与左右角焊缝金属的焊脚长度3（3a，3b）之和L的比率X（％）和脆性断裂韧性Kca（N / mm3 / 2）满足下式：X（％）≥{5900-Kca（N / mm3 / 2）} / 85。更优选地，角焊接头9的未焊接部分4的宽度在腹板1的板厚度t与腿长度3（3a和3b）的总和L的15％至90％的范围内左右角焊缝金属。如果腹板1具有对接接头11，则腹板1在其对接接头11处的宽度与腹板1的板厚t的总和L的比率X（％）与腹板1的对接接头11的腿长度3（3a和3b）角焊缝金属在使用温度下的凸缘2的脆性断裂韧性Kca（N / mm3 / 2）满足上述表达式。

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