| 摘要 |
PURPOSE:To distinctively curtail the time through application to manufacture of ultra-large size cathode-ray tube with high thermal capacity by carrying out the baking process for phosphor screen, heat process for flit seal and heat process for exhaustion with a single circulation of heating. CONSTITUTION:An aperture end of a funnel 5 accommodating an electron gun 3 within the neck part 4 or panel 2 is coated with glass flit material, it is specifically held with a position setting means 12 of a transfer board 30, a valve 24 is opened, a valve 25 is closed, and thereby external air is introduced into a bulb assembling body 11 from a chip tube 10. The transfer board 30 is introduced into a heating furnace for heat processing. Thereby, the baking process for the phosphor screen within the panel 2 and flit seal processing of panel 2 and funnel 5 are carried out. The valve 24 is closed, the valve 25 is opened, thereby the inside of tube is exhausted by a vacuum pump 22 and the chip tube 10 is sealed by melted material by supplying the power to a heater 21. |
