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http://dx.doi.org/10.3740/MRSK.2004.14.4.300

A Study on the Formation of Cavity and Welding Property in the Laser Welding Fusion Zone between Sintered Segment and Mild Steel Shank  

Cho Nam-Joon (국민대학교 공과대학 신소재공학부)
Jung Woo-Gwang (국민대학교 공과대학 신소재공학부)
Kim Sung-Wook (한양대학교 공과대학 신소재공학부)
Lee Chang-Hee (한양대학교 공과대학 신소재공학부)
Kim Sung-Dea (국민대학교 공과대학 신소재공학부)
Publication Information
Korean Journal of Materials Research / v.14, no.4, 2004 , pp. 300-306 More about this Journal
Abstract
A laser welding has been made between sintered tip of Fe-Co-W and low carbon steel shank for the diamond saw blade. The welding characteristics and formation of defect has been investigated carefully for the weld fusion zone in different welding condition. Full penetration has been observed for the whole range of heat input investigated in the present work. Bead width and under-fill have been increased with the increase of heat input. With increasing of heat input small cavities were decreased while large cavities were increased. The ratio of total cavity area to the entire weld bead area was not changed significantly with change of heat input. Most of cavities were found near the tip, and supposed to be formed from the pore in the tip.
Keywords
diamond saw blade; laser welding; heat input; Fe-Co-W sintered tip; cavity;
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