| 摘要 |
851,744. Casting composite articles. SIEMENS & HALSKE A.G. Oct. 2, 1957 [Oct. 2, 1956], No. 30902/57. Class 83 (1). [Also in Group XXXVI] A method for the manufacture of an encased electrical component consists of providing the component and those parts of its leads which are inside the casing with an electrically-insulating coating, and pouring into the casing a metal in the liquid phase, or a mixture containing a metal, to a height sufficient to cover at least a part of the component. A germanium and indium transistor 3 and its leads are given an insulating coating 6, and a molten metal 2 is poured into the casing 1. The leads are fused through glass beads in the lid 4, which is soldered to the casing. The coating 6 may be silica-varnish, mono-vinyl-carboxyl, or a similar substance. The metal 2 may consist of or contain bismuth, lead, cadmium, or tin. It may be Newton's metal or an alloy containing 24% lead and 56% bismuth. Instead of a molten metal, an oil or molten fat containing metal chips or powder may be used. |
