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. The possibilities of the fuzzy regression method to predict the bead geometry,such as bead width, bead height, bead penetration and bead area in the robotic GMA (gas metalarc) welding process is presented..., respectively. Using these models, the proper prediction of theprocess variables for obtaining the optimal bead geometry can be determined. Key words:robotic arc welding; bead geometry; fuzzy regression......
height for bulging gas pressure. Key words: superplastic forming; Ti-6Al-4V; laser beam welding ... the bulge height will be. The gas pressure has an optimum value, but both the welding velocity and gas pressure have a little effect on the bulge height. Fig.5 Female die and part after bulging Fig.6......
pores if the air could not escape from the weld pool upon solidification. This phenomenon was also reported by LIU et al [9] while conducting hybrid laser-tungsten inert gas arc welding of magnesium... of die-cast magnesium alloy AM60B-mechanism and remedy [J]. Welding Journal, 2001, 80(8): s204-s210. [9] LIU L M, SONG G, LIANG G L, WANG J F. Pore formation during hybrid laser-tungsten inert gas arc......
, 1997, 23(2): 23-31. [4]Frings A, Stockel S. Fully mechanized inert-gas metal-arc brazing of galvanized thin steel sheet[J]. Schweien und Schneiden, 1986, 38(12): 624-629. [5]Frings A, Stockel S. Fully mechanized inert-gas metal-arc brazing of aluminized thin steel sheet[J]. Schweien und Schneiden, 1989, 41(11): 577-583. [6]Nithiarasu P. An adaptive finite element procedure for solidification......
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joining of TC4 titanium alloy to 2A12 aluminum alloy was conducted by gas tungsten arc welding using Al-Si eutectic filler wire, and the effects of the welding current on the microstructure... A. Key words: Ti/Al dissimilar alloy; gas tungsten arc welding; interfacial reaction; fracture behavior 随着我国航空和航天等行业的快速发展,钛合金和铝合金等轻质高强材料所构成的异种金属复合构件具有着巨大的潜在应用前景,但钛/铝复合构件的应用面临着钛合金与铝合金异种金属能否可靠焊接的技术瓶颈.在高温作用......
than initial weld zones. The repair welding of TA15 titanium alloy with flux is a mending method which can obtain high quality repairing bead. Key words: TA15 Ti alloy; gas tungsten arc welding...): 876-880. [16]张兆栋, 刘黎明, 沈勇, 等. 镁合金的活性电弧焊接[J]. 中国有色金属学报, 2005, 15(6): 912-916. ZHANG Zhao-dong, LIU Li-ming, SHEN Yong, et al. Activating flux for arc welding of magnesium alloy[J]. The Chinese Journal......
electron microscopy(TEM) and the corres- ponding selected area electron diffraction(SAED). 2 Experimental The metal nanopowders were prepared by anodic arc discharging plasma technique in inert... to the arc current supply as anode, and the tungsten rod mounted in an insulated and axial sliding manner and connected to a power supply as cathode. The bulk raw material to be evaporated was placed......
the welding techniques, tungsten inert gas (TIG) welding is one of the main methods in joining 7000 series aluminum alloys. During welding both heating and cooling processes, the highly localized transient heat... D J, SMITH S D, WEBSTER P J. Synchrotron X-ray measurement and finite element analysis of residual strain in tungsten inert gas welded aluminium alloy 2024 [J]. Metallurgical and Materials......
is to obtain spheroidal cast tungsten carbide powder from angular powder at a small scale in laboratories by new technologies[10-12], such as plasma and arc melting-rotary atomization[11-16]. Though... The angular cast tungsten carbide powder was carried by carrier gas continuously through a pre-heated sector and a high temperature spheroidizing sector to spheroidize angular powder at an super-heated......
