Convection-type brazing method and its apparatus for metal workpieces
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United States of America Patent
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app pub date -
May 29, 2001
filing date -
May 30, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A metal workpiece to which a brazing material and a flux are previously adhered is set into an index type convection furnace, and a heating medium gas is blown to this metal workpiece, so that the temperatures of the workpiece are increased up to the brazing temperature. After that, the temperatures of the heating medium gas are varied between the temperature slightly higher than the brazing temperature and the temperature at least 5% lower than that, in a predetermined period, while brazing. According to this method, a temperature slope of the workpiece is eliminated and uniform brazing is possible.
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