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Publication of LU64681A1publicationCriticalpatent/LU64681A1/xx
B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
B23K15/00—Electron-beam welding or cutting
B23K15/0046—Welding
B23K15/0053—Seam welding
B23K15/0066—Seam welding with backing means disposed under the seams