Taking the welded rotor of steam turbine as the research object. a two-dimensional axisymmetric finite element model of multi-layer and multi-pass TIG are welding process was established. By using the double ellipsoidal heat source model. the element birth and death method and the Dflux heat source movement subroutine. https://chefesquipmenters.shop/product-category/vegetable-fruit-slicers/