X-ray apparatus and method of construction
    24.
    发明授权
    X-ray apparatus and method of construction 失效
    X射线装置及其施工方法

    公开(公告)号:US2310567A

    公开(公告)日:1943-02-09

    申请号:US37363041

    申请日:1941-01-08

    Abstract: 554,545. Copper -containing solder alloys. BRITISH THOMSON - HOUSTON CO., Ltd., (General Electric Co.). June 16, 1942, No. 8247. Drawings to Specification. [Class 82 (i)] [Also in Groups XXII and XL] In soldering or brazing beryllium to steel or other metals such as in forming a vacuum-tight joint between a beryllium window and the body of an X-ray apparatus for examining chemical substances &c. an alloy is used of a metal which goes into solution relatively slowly with beryllium when both metals are in the molten state. The alloy has a melting point above 700‹C and preferably between 700‹C and 900‹C and may consist of equal parts of copper and silver and brazing may be effected in a hydrogen furnace with calcium chloride as a flux. Another alloy may consist of 80 per cent of copper, 15 per cent of nickel and 5 per cent of iron which has a melting point about 1200 ‹C.

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