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Publication of NL31772CpublicationCriticalpatent/NL31772C/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
B23K1/00—Soldering, e.g. brazing, or unsoldering
B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
B23K1/001—Sealing small holes in metal containers, e.g. tins
C—CHEMISTRY; METALLURGY
C03—GLASS; MINERAL OR SLAG WOOL
C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
C03C3/00—Glass compositions
C03C3/04—Glass compositions containing silica
C03C3/062—Glass compositions containing silica with less than 40% silica by weight
C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths