| 2004 №12 (03) | 2004 №12 (05) |
The Paton Welding Journal, 2004, #12, 26-32 pages
Properties of weld metal at induction braze-welding of steel 20
A.S. Pismenny, D.P. Novikova, A.S. Prokofiev, V.V. Polukhin
E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
The paper gives the results of studying the microhardness of the metal of the weld and HAZ produced by the method of induction-press welding (braze-welding) with application of activating materials. It is established that the weld metal is an alloy based on the parent metal of the parts beingjoined. It is determined that deformation coefficient required for performance of sound welds is within kd = 0.025-0.050. It is shown that during performance of braze-welding with contact trajectory along a closed cylindrical surface, up to 25 % of the joint zone is not visualized and the billets are joined over the base metal.
Keywords: braze-welding, tubular and flange Joints, induction heating, deformation, weldability, metallographic examination, express-procedure
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