| 摘要 |
<p>External locking system of the rings of weld material (3) to position at the extremity of the tubes to weld of the of injection/sucking fittings of collectors for heat exchangers, characterized by the fact to: prearrange the weld material rings (3) with the respective head extremities distanced (I); insert said weld material rings (3) above the collector tubes (11) that must support them for the subsequent welding; tighten said weld material rings (3) until the surface of the tube that supports it (11) is deformed, forming (3'); slight interference (i) and substantial conjunction of the respective head extremities (31). <IMAGE></p> |
