Hi

I weld(TIG weld) two Stainless Steel (422) work piece with each other in different diameter , one is 300 mm and another is 50mm and then i turning this part but the welded zone is harder and surface finish in this zone is shiny and different from and it is not good for me

please let me to know how can i have the same surface finish in welded and not welded surface after turning(in other nobody can know that this parts welded?


Thank you