Brazing method for mounting a tension shadow mask

摘要

A process is disclosed for use in the manufacture of a color cathode ray tube in which an in-process flat glass faceplate has on its inner face a centrally located phosphor screen. A metal color selection electrode support structure with an electrode-receiving surface is secured to the inner face of the faceplate on opposed sides of the screen. A foil color selection electrode composed of hardened metal is provided which has a surface for engaging the electrode-receiving surface of the support structure. The electrode-receiving surface of the support structure, and a surface of the electrode engaging the support structure, are preconditioned with filler metal means. The color selection electrode is expanded and the preconditioned surfaces are placed in conjunction. Heat is applied to the preconditioned surfaces by means effective to melt the filler metal means with minimal annealing of the hardened metal of the electrode. The filler metal means is then cooled to permanently secure the color selection electrode in tension on the support structure.