Prediction and Verification of Deformation Law during Repair Welding for Process Hole of Titanium Alloy Castings
In order to master the deformation law and stress distribution during repair welding of titanium alloy cast-ings,the key simulation parameters were proofread firstly based on the combination of simulation analysis and process experiment.The heat input voltage was measured to check double ellipsoid heat source model,and the simulation as well as verification of casting deformation were carried out for the process hole of slide-way sleeve casting under differ-ent welding currents.The results indicate that the deformation near the casting process hole presents a downward trend with the welding current of 100,150 and 200 A,and the deformation is about 0.1 mm.With the increase of welding current,the deformation in the middle arc of casting is gradually increased from 0.08 mm to 0.2 mm,which is consis-tent with the trend predicted by Sysweld simulation.
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