When brazing the tool, the temperature of the base part of the tool is required to be higher than that of the filler metal, and the brazing heating time is longer, so there is a heat conduction process. Considering the temperature uniformity of the heating part of the cutter bar, the medium frequency current should be better than the high frequency current, which is related to the cross section of the cutter bar and the heating current path. Most of the early brazing tools used high-frequency power supply, which mainly considered the versatility with other parts of the tool.
If the power supply is specially used for tool brazing, the current frequency should be selected according to the uniform current and temperature distribution of tool section and brazing surface.
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On 2018-08-08 11:45:46
