Separately excited resonance phenomenon of the weld pool and its application

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Welding Journal (Miami); (United States)

OSTI ID:5990655

Wang, Q L; Yang, C L; Geng, Z ^[1]

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1. Harbin Inst. of Tech., Harbin (China). Dept. of Welding Engineering

On the basis of a study of weld pool resonance phenomenon in stationary gas tungsten arc (GTA) welding of a thin steel plate with a straight polarity pulsating current of a certain frequency, a new method of real-time full joint penetration detection from the top side of the weld using an arc sensor was developed. The correlation between weld pool resonance frequency and top bead width, as well as under bead width, has been studied. An experimental system of full joint penetration control for a thin steel plate was developed. It is shown that by using this system, the real-time control of top and under bead widths can be successfully realized in thin steel plate welding. Stable and regular weld formation, even under severe external interference, even under severe external interference, has satisfactorily verified its promised controlling capability.

• OSTI ID: 5990655
• Journal Information: Welding Journal (Miami); (United States), Journal Name: Welding Journal (Miami); (United States) Vol. 72:9; ISSN 0043-2296; ISSN WEJUA3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ALLOYS
ARC WELDING
CONTROL
CORRELATIONS
DETECTION
ELEMENTS
FABRICATION
FLUIDS
GAS METAL-ARC WELDING
GAS TUNGSTEN-ARC WELDING
IRON ALLOYS
IRON BASE ALLOYS
JOINING
JOINTS
LIQUID METALS
LIQUIDS
METALS
REAL TIME SYSTEMS
STEELS
WELDED JOINTS
WELDING