CAJ | 학술논문

宝钢湛江千万吨钢铁基地炼钢主厂房吊车梁结构形式为支撑桥式吊车梁，虽然结构形式简单，但由于吊车梁承载较大，材质为高强度结构钢Q390B ，该材料碳当量高，焊接难度大，焊接变形不易控制；通过对特殊材质对接焊缝的工艺研究，采用焊接反变形措施使拼板对接及主焊缝达到一次成型，减少焊后校正成本；同时通过严格控制涂装环境的方式，使涂装质量满足沿海地区8～10年的防腐使用年限。
보강담강천만둔강철기지련강주엄방조차량결구형식위지탱교식조차량，수연결구형식간단，단유우조차량승재교대，재질위고강도결구강Q390B ，해재료탄당량고，한접난도대，한접변형불역공제；통과대특수재질대접한봉적공예연구，채용한접반변형조시사병판대접급주한봉체도일차성형，감소한후교정성본；동시통과엄격공제도장배경적방식，사도장질량만족연해지구8～10년적방부사용년한。
The crane beam of the main plant building of Baosteel ten‐million‐ton iron and steel base in Zhanjiang city is supporting overhead crane beam .Although the structure was simple ,thick high strength structural steel Q390B was adopted as the material of the crane beam because of heavy loads .The material property of high carbon content may lead to welding difficulties and welding deformation ,which is not easy to control .Through the research of the fabrication technology of butt weld in specific materials ,welding anti‐deformation measures can be applied in butting plate and once forming of the main welding line ,thus decreasing the welding correction cost .At the same time ,through strict control of painting environment ,coating quality can meet the requirements of 8~10 years of corrosion prevention service life in the coastal areas .