STUDY OF WELD ZONE OF FLASH BUTT WELDED C45-HS-6-5-2 BIMETALLIC TOOLS

Particularly large diameter drills which are widely used in industry a re produced from two different steels. Drill shanks are made of carbon steels, whereas drill bodies are made of high speed steels. Flash but t welding is usually used for joining of these types of bimetallic too ls in many countries. In this work, flash butt welded C45-HS 6-5-2 dis similar steel joints were made. The weld zone of the weldments was exa mined using scanning electron microscopy energy dispersive X-ray analy sis, and wavelength dispersive X-ray analysis. Diffusion phenomena in the weld zone of the joints are also explained. (C) 1997 The Institute of Materials.