Experimental Parameter Calculation of Welding Deformation Correction by Flame Straightening

Abstract

Abstract. In order to study the method of oxygen-acetylene flame straightening parameter design for welding deformation correction, flame straightening experiment and calculation of welding deformation of the T-shaped structure of double bottom plate and stiffened plate on the 110000 tons refined oil products/crude oil ship are completed. The results show that: Flexure deformation is formed between the two adjacent stiffened plate after welding process; The deformation is largest on the free edge of bottom plate; When the thickness of stiffened plate remains unchanged, smaller thickness of the bottom plate leads to larger the flexural deformation of both bottom plate between stiffened plates and the free edge of the bottom plate. The calculation method of oxygen-acetylene flame parameter based on welding heat input is feasible, and the calculated oxygen-acetylene flame parameters can be used to eliminate flexure deformation of T-shaped structure.