Butt-welding of high-carbon steel - with subsequent plastic deformation

摘要

The structure of butt-welds of opt. allowed steel contng. 0.4% C, esp. wires, contng. about 1% C is improved by plastically stretching the weld zone to a total length increase of 5-25% in the temp. range of 1000-600 degrees C, reached by cooling from the welding temp. or by reheating to a temp. =100 degrees C. higher than the Ac3 transformation temp. Martensite is partly converted into ferrite, perlite, or bainite.