The Paton Welding Journal, 2012, №05



2012 №05 (07)

2012 №05 (09)

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The Paton Welding Journal, 2012, #5, 37-39 pages  

EQUIPMENT AND TECHNOLOGY OF EBW IN FINISHING SMOOTHING AND REPAIR OF REVERSE BEADS OF WELDS OF TUBULAR PRODUCTS

L.A. KRAVCHUK

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
Given are the hardware and technological solutions for the finishing smoothing and repair of linear reverse beads of weld of up to 1200 mm long inside the position extended tubular products of a rectangular shape using a system of electron beam refraction by 90°. As applied to titanium alloy VT20, the parameters of electron beam finishing smoothing were obtained providing the formation of a smooth transition from base metal to weld, smooth surface of molten metal and prevention of undercuts of up to 0.15 mm depth.
 
 
Keywords: electron beam welding, through penetration, reverse bead of weld, electron beam, rotating system, long tubular products, working distance, focusing, depth and width of penetration, crater
 
 
Received:                27.12.11
Published:               28.05.12
 
 
References
1. Borovik, V.M., Frolov, O.V., Shubin, F.V. (1991) Flashing of inner surface of cylindrical specimens by deviated beam. In: Proc. of 11th All-Union Sci.-Techn. Conf. on Electron Beam Welding (Nikolaev, 1-3 Oct. 1991). Leningrad: Sudostroenie, 73-74.
2. Nazarenko, O.K. (2008) Reduction of evacuation time of large-sized vacuum chambers of electron beam welding installations. The Paton Welding J., 3, 41-42.
3. Nudelman, Ya.B., Zadery, B.A. (1988) Weld formation in electron beam welding of titanium alloys up to 25 mm thickness. Avtomatich. Svarka, 5, 29-30.
4. Kravchuk, L.A. (2010) Elimination of undercuts in EBW with complete and incomplete penetration. The Paton Welding J., 6, 22-25.
5. Zhdanevich, M.L. (1989) Deformation of resonators in electron beam welding. In: Abstr. of All-Union Sci.-Techn. Conf. on Electron Beam Welding in Machine-Building (Nikolaev, Sept. 1989), 41-42.

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