Development and Verification of Automatic Longitudinal Welding for the Stainless Steel Rectangular Water Pipe
The automatic longitudinal welding pipe manufacturing technology is applied to develop a process for welding stainless steel rectangular water pipes used in the water cooling stator coils of 1 000 MW water-hydro-gen-hydrogen turbine generators in the article.It has been verified that the stainless steel rectangular water pipes welded by means of automatic longitudinal welding meet with technical requirements in fields of macroscopic me-tallographic,hardness,tensile properties,and intergranular corrosion resistance.Additionally,the water pipe's bending and welding performance are validated through the trial production of a 1 000 MW generator of stator coils,thus,the water pipes are well sealed.Verification result shows the feasibility of application of the welded stainless steel rect-angular water pipes into stator coils.
turbine generatorstator coilwelded tuberectangular water pipe
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