论文部分内容阅读
涟钢三炼钢车间的钢吊车梁,其跨距有6米、12米和18米等多种,制作材料有3号钢和16锰钢,腹板厚度为10～14毫米,翼板厚14～20毫米。焊缝形式主要为T形角焊和对接平焊,焊接方式有自动焊与手工焊两种。按国家有关规定,系属于一、二类结构,其焊缝应进行无损检验。为此,我们对主要焊缝全部进行了超声波探伤,并抽查了一部分对接平焊缝进行X光拍照,以便校核。在探伤中发现的不合格部位及时进行了铲除和补
The steel crane beam in the third steel-making plant of Handan Iron and Steel Co., Ltd. has spans of 6 meters, 12 meters, and 18 meters, etc. The production materials include No. 3 steel and 16-manganese steel, and the thickness of the web is 10 to 14 mm. 14 to 20 mm. The main forms of welds are T-shaped fillet welding and butt welding. There are two types of welding methods, automatic welding and manual welding. According to the relevant regulations of the State, it belongs to the Class I and Class II structures, and the welds should be subjected to non-destructive testing. To this end, we performed all ultrasonic inspections on the major welds and spotted a portion of the butt welds for X-ray photography for verification purposes. The unqualified parts found during the inspection were timely eradicated and repaired