Article presents results of using padding welding technology with laser and filler wire as an additional material. Research work presented in this paper shown relation between laser parameters and padding welds geometry. Possibility of rapid prototyping of spatial structures are presented.
Laser welding in the case of the beam inclined (not perpendicular) to the metal surface is analysed. The geometry of the heated area is described and the influence of this inclination on the depth and the shape of the fusion zone is experimentally studied. An example of the laser welding of the zinc-coated steel structural element with the use of inclined beam is presented.
Paper presents results of microstructure and mechanical tests of welded joints of new generation Super304 austenitic stainless steel using high power CO2 laser (LBW method) with bifocal welding head. Super304 is modified 304 steel dedicated to energetic installation material, designed to replace currently used. High content of chromium and nickel with others alloying elements improve its resistance and strength characteristic. Use of Super304 steel for production of the superheaters, heating chambers and walls in steam boilers resulted in various weldability researches.
In article are presented results of destructive and non-destructive tests. For destructive: static bending and Vickers hardness tests, and for non-destructive: VT, RT, UT, micro and macroscopic tests were performed.
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