Methods for Optimizing the Preheat Temperature in Welding
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Authors
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Institute de Soudure, Paris ,FR
R. Gaillard -
Institute de Soudure, Paris ,FRS. Debiez
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Ministry of Public Works, Brussels ,BEM. Hubert
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Centre de Recherches Metallurgiques, Liege ,BEJ. Defourny
Abstract
Several investigations have developed the principle of the control of the weld cycle cooling rate between 300 and 100"C with the aim of decreasing the preheat temperatures generally applied, while avoiding any risk of cold cracking. This control consists in slowing down sufficiently the cooling above 100°C to favour the elimination of diffusible hydrogen.
