Verfahren zum Herstellen einer Kathodenstrahlroehre mit einem Eisenkonus,申请号DE1954N008956-传众专利搜索

Verfahren zum Herstellen einer Kathodenstrahlroehre mit einem Eisenkonus

申请公布号：DE936156(C)

申请号：DE1954N008956

申请日期：1954.05.26

申请公布日期：1955.12.07

申请人：

N. V. PHILIPS' GLOEILAMPENFABRIEKEN

发明人：HAGENBERG THEODORUS

分类号：C03C27/04;H01J9/26

主分类号：C03C27/04

摘要：739,550. Glass-metal seals. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 25, 1954 [May 28, 1953], No. 15380/54. Class 36. In making a cathode-ray tube in which the glass window is sealed to an iron cone, at least the sealing zone of which is nickel-plated, the sealing zone is previously subjected to a heattreatment during which it is so intensely heated for a certain period of time that at least part of the nickel layer forms an alloy with the underlying iron, after which the remaining nickel layer is removed from the sealing zone and the glass window sealed thereto. The nickel layer may be electrolytically deposited on the iron to a depth of 15 microns and may be heated to 1100‹ C in air or a nitrogen-hydrogen mixture for from 3 to 5 minutes. The remaining nickel layer may be removed by chemical or mechanical methods to a depth such that the sealing surface finally consists of an alloy containing 50 per cent nickel and 50 per cent iron.