Low-temperature high-construction steel thick plate welding method
The invention provides a low-temperature high-construction steel thick plate welding method, which belongs to the technical field of thick plate welding, and comprises the following steps: carrying out special welding process evaluation, compiling an operation instruction book, and determining weldi...
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| creator | GUO FAQIANG WANG HONGJUN WU YUE NIU HUIYONG LIAO RUIZHI ZHANG XINHE MA XIN JIANG YAO |
| description | The invention provides a low-temperature high-construction steel thick plate welding method, which belongs to the technical field of thick plate welding, and comprises the following steps: carrying out special welding process evaluation, compiling an operation instruction book, and determining welding process parameters; a protective shed is erected in the welding area; preheating before welding: preheating a welding area through a heating piece, wherein the lowest preheating temperature is 60 DEG C; a multi-layer and multi-pass welding method is adopted, and the interlayer temperature ranges from 100 DEG C to 150 DEG C; and post-welding heat preservation, wherein after welding is finished, post-heating heat preservation treatment is conducted on a weld joint. Through the process steps of arrangement of the protective shed, preheating before welding, interlayer temperature welding and heat preservation after welding, the quality of a welding seam is improved to the maximum extent, welding residual stress and |
| format | Patent |
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| subjects | CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM |
| title | Low-temperature high-construction steel thick plate welding method |
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