ANALYSIS OF DYNAMIC DEVELOPMENT OF SURFACE DEPRESSION IN FULL-PENETRATED WELDPOOL

Acta Metall Sin

2006, Vol. 42

Issue (8): 865-869 DOI:

Research Articles

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ANALYSIS OF DYNAMIC DEVELOPMENT OF SURFACE DEPRESSION IN FULL-PENETRATED WELDPOOL

ChuanSong Wu;

山东大学

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ChuanSong Wu. ANALYSIS OF DYNAMIC DEVELOPMENT OF SURFACE DEPRESSION IN FULL-PENETRATED WELDPOOL. Acta Metall Sin, 2006, 42(8): 865-869 .

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Abstract To describe the transient transformation process of surface depression of full-penetrated weldpool, a sudden variation of welding process parameters (welding current and welding speed) at some moment when the weldpool has reached quasi-steady state simulates the disturbance during practical welding process. Through employing the developed model for transient behaviors of tungsten-inert-gas arc weldpool, the dynamic transformation process of surface depression of full-penetrated weldpool after a sudden variation of welding process parameters in quasi-steady state is numerically simulated, and basic data are obtained to guide designing weld penetration control system. The welding experiment results show that the predicted surface depression for both top and bottom sides of weldpool is in agreement with the measured one.

Key words: full-penetrated weldpool surface depression dynamic development

Received: 01 November 2005

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