试验钢材包括Q345GJC-Z15（壁厚70mm）、Q345GJC-Z15（壁厚40mm）、Q345C（翼缘厚28mm），焊接位置为柱—柱横焊、柱—梁平焊（包括桁架梁上下翼缘平焊）、T型角立焊。坡口形式及尺寸按设计要求。焊后外观及超声波检查合格后取样进行了力学和物理试验。

    试验结果接头的抗拉强度达到母材抗拉强度标准值，接头弯曲180°无裂纹。采用的焊接材料和焊接设备技术条件应符合国家标准，性能优良。清渣、气刨、焊条烘干保温等装置应齐全有效。

Test steel including Q345GJC - Z15 (wall thickness 70 mm), Q345GJC Z15 (40 mm) thickness, Q345C (28 mm flange thickness), welding position for horizontal column and column, column - liangping welding (including truss beam and flat welding flange), T Angle welding. Groove form and size according to the design requirements. After welding appearance and ultrasonic inspection qualified after sampling the mechanics and physics experiment was carried out.

Test results of the tensile strength of joint reach the parent metal tensile strength standard values, joint bending 180 ° no crack. The welding material and welding equipment technology conditions should comply with the national standards, excellent performance. Slag removal, air gouging, welding electrode drying thermal insulation device should be complete and effective.

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