Research on Welding Procedure of Q420NE Steel for Door Frame of Wind Power Tower Barrel
For a wind power tower barrel manufacturing project,a research was conducted on the flux-cored arc welding with CO2 gas shielding(FCAW)process of Q420NE thick plate butt joint for door frame of wind power tower barrel,and the Q420NE thick plate welding procedure was evaluated.Additionally,through solid wire control group experiments,the influence of different shielding gases on the solid wire gas shieled welding was analysed.Results show that,the FCAW process meets the welding procedure requirements for Q420NE thick plate and can be used for the tower barrel door frame welding.For solid wire gas shielded welding,the type of shielding gas has a significant impact on the welding of Q420NE steel,and welding Q420NE steel with pure CO2 gas cannot ensure that the weld meets the technical requirements.
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