Production of rings for gas-turbine engines by the hot rolling of welded blanks

Abstract

The manufacture of rings for gas-turbine engines is considered. The rings are obtained from folded and welded steel sheet, with subsequent strengthening of the weld seam by forging and rolling (with 30–50% deformation). Metallographic data confirm that uniform structure is obtained by hot rolling at the weld seam; its grain size is optimal and its mechanical properties are good.