Gas protection device for all-position tube plate automatic argon arc welding
The utility model discloses a gas protection device for all-position tube plate automatic argon arc welding. The gas protection device for the all-position tube plate automatic argon arc welding is used for welding a nonferrous metal and alloy heat exchange tube with a tube plate joint in the pressu...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a gas protection device for all-position tube plate automatic argon arc welding. The gas protection device for the all-position tube plate automatic argon arc welding is used for welding a nonferrous metal and alloy heat exchange tube with a tube plate joint in the pressure vessel manufacturing process, and belongs to the technical field of pressure vessel welding. The gas protection device for the all-position tube plate automatic argon arc welding comprises a tube plate, a gas protection welding nozzle and tungsten electrode, a locating rod, a oxidizable nonferrous metal and alloy heat exchange tube and a groove, wherein the locating rod is provided with a protection gas overflow hole; and protection gas overflown from the protection gas overflow hole and protection gas overflown from the gas protection welding nozzle and tungsten electrode are mutually cooperated to form a gas protection area so that the inner airflow and the outer airflow of the nonferrous metal and alloy heat |
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