摘要 本文介绍了某工程中大型铸钢节点与无缝钢管焊接的关键技术。成功解决了工程中铸钢节点与无缝钢管节点形式的选取、铸钢节点与无缝钢管V形坡口的设计原则、焊接工艺、焊材焊接机具选择、焊接环境、焊接参数、焊前预热措施、焊接质量控制、焊接变形控制、焊接防护措施以及焊后处理等技术。
ABSTRACT The paper introduces the key technology of welding cast-steel joint to the seamless steel pipe in a project. It is a successful case for similar project and the contents include choice of the welding joints of large cast-steel and seamless steel pipe, design principle of V-shape groove of the joints, welding process specification, selection of welding machine and welding material and welding key points ,such as welding environment, welding parameters, welding warming-up, control of deformation, and welding protection, measures after welding, etc.
Abstract: civil engineering structure commonly used two materials, namely, reinforced concrete and steel for civil engineering, it should not only from the structural characteristics Angle consideration, consider the cost effectiveness of construction and construction effectiveness. This paper analyzes the steel structures in civil engineering, and the characteristics of the steel structure of the briefly elaborated construction points.