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在厂房钢结构中,诸如重级工作制吊车梁的上翼缘与腹板、牛腿与柱子连接的T型接头的焊缝大都要求焊透。随着大型钢结构厂房的涌现,构件也在向大型化发展,构件的尺寸和板厚亦相应增加。如宝钢炼钢厂主厂房中,支承440t吊车,材质为SM50(相当于国产16Mn)的H型吊车梁,腹板厚达32mm;宝钢初轧厂H型运锭轨梁的翼板厚65mm,腹板厚40mm,均为焊透的T型接头。
In plant steel structures, welds such as T-joints on the upper flange and webs, crook legs and columns of heavy duty crane girders require penetration. With the emergence of large-scale steel structure plant, components are also to large-scale development, component size and thickness also increased accordingly. For example, in the main workshop of Baosteel Steel Works, the H-shaped crane girder supporting 440t crane and material SM50 (equivalent to domestic 16Mn) has a web thickness of 32mm; the flange thickness of H- Web thickness 40mm, are welded through the T-type connector.