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“六五”国家科技攻关项目FV315HRL牵引JTBG35J集装箱专用半挂车曾荣获交通部的“金杯奖”,其车架纵梁长12176mm,要求焊接的I字型纵梁上翼面直线度为4mm,焊接变形成为了生产中的关键所在。细丝CO_2焊用于薄板焊接已很普遍,但用于6mm与15mm中板的T型角焊缝及车架其它部位的焊接,在国内还是一种尝试。用计算公式来估算和指导控制焊接弯曲挠度,对焊接生产也有一定的现实意义。
The “Sixth Five-Year” national science and technology project FV315HRL traction JTBG35J container dedicated semi-trailer has won the Ministry of Communications “Jinbei Award”, the frame longitudinal beam length 12176mm, I-beam welding requirements of the upper surface straightness of 4mm, welding deformation The key to production. Filament CO_2 welding has been widely used in sheet metal welding, but it is still an attempt in China to weld T-shaped fillet welds of 6mm and 15mm plates and other parts of the frame. The calculation formula to estimate and guide the control of welding bending deflection, the welding production also has some practical significance.