Method with welding residual stress control and crack prevention functions
The invention discloses a method with welding residual stress control and crack prevention functions, which comprises the following steps of: before welding, determining preheating temperature and heat preservation time according to the strength of a workpiece material, a stress state, a welding met...
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| creator | YANG XUNLIANG LI GUANGJUN MENG XIANGYI LIN CHANGJIU LIU JINGANG ZHAO MAPING ZHANG XU WEI SHENG WANG ZHIQIANG HU GUOMIN HUANG CUNCHAO LI DONG WANG MINFENG ZHU HUAXUE |
| description | The invention discloses a method with welding residual stress control and crack prevention functions, which comprises the following steps of: before welding, determining preheating temperature and heat preservation time according to the strength of a workpiece material, a stress state, a welding method and welding parameters; the annular large-wall-thickness welding seam of the workpiece material is subjected to segmented welding; repeated multi-pass welding is adopted for midway welding, a final plugging section is reserved, and welding is conducted; in the welding process, real-time temperature monitoring is conducted on a welding area, welding parameters are adjusted according to real-time temperature data, and the welding temperature and the welding speed are controlled; and after welding, a welding joint is cooled. The method is used for solving the technical problems that an existing method for controlling the welding stress and preventing the welding cracks cannot well adapt to the welding requirements |
| format | Patent |
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The method is used for solving the technical problems that an existing method for controlling the welding stress and preventing the welding cracks cannot well adapt to the welding requirements</abstract><oa>free_for_read</oa></addata></record> |
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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 | Method with welding residual stress control and crack prevention functions |
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