METHOD FOR RECONDITIONING CRYSTAL ENVELOPES OF GASEOUS- DISCHARGE LAMPS Russian patent published in 1996 - IPC

Abstract RU 2069025 C1

FIELD: manufacture of gaseous-discharge lamps. SUBSTANCE: envelope is cleaned of metal of electrode assemblies and solder by etching with mixture of nitric and hydrofluoric acids at volume proportion of 2:1 for 15-20 min and with 20% sulfuric acid for 1.5-2 h at 70-80 C. EFFECT: facilitated procedure.

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RU 2 069 025 C1

Authors

Antropov N.I.

Gajdukov E.N.

Prjadko S.P.

Smotrjaev S.A.

Dates

1996-11-10—Published

1991-02-05—Filed