| 摘要 |
A method and a device for performing spot heating of a body, particularly for brazing hard solder gold alloys. In said method an article, for example of a hard solder gold alloy, which is to be heated to a predetermined temperature, is positioned in the focal point of one or more reflecting partial ellipsoids, in whose other focal point or focal points, respectively, an appropriate lamp, for example an IR lamp, is disposed. The radiated heat of the IR lamps causes the article to be heated rapidly and intensely. Temperature control can be carried out subjectively by observing the melting of the solder through a window or alternatively by means of a thermocouple connected to the article. The device of the invention comprises a chamber having an airtight glass cover. On top of this a heating unit is placed consisting of one or more ellipsoid-shaped casings each having an IR lamp in its focal point. In the chamber a support table on which the article to be heated is disposed is positioned in the other focal point of the partial ellipsoid or ellipsoids. The device is provided with a window through which the solder can be viewed, and the device can contain equipment for manipulating the workpiece or the solder from the outside. |
