The Choice of Parameters for Welding of Steel S355NL

Abstract

Research work is focused on welding of fine grained nomalised steel S355NL with high thickness 50 mm for crane construction. Double sided V-groove butt weld done by GMAW with filler OK Autrod 12.60. Welding parameters and cycle were designed according to norm EN 1011-2. Carbon equivalent, parameter U.C.S. served to set preheat and interpass temperature. No weld heat treatment was used. Destructive and non-destructive testing served to certify used welding process.