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Gas soldering iron-telescope. home workshop

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Neither welding nor ultra-modern technological methods of joining metal surfaces - with the help of a laser or super-powerful adhesives - have replaced the ancient, but not aging method: soldering. And here promising innovations are constantly appearing, many come from NTTM participants, young innovators in production.

One of the innovations was born at the Vitebsk machine-tool plant named after S. M. Kirov. An original telescopic torch has been developed here, which allows you to solder different-sized parts with fusible solders: small workpieces - the torch is reduced, you need to connect longer ones - the "soldering iron" is stretched to the required size.

Gas soldering telescope
(click to enlarge)

The "secret" is that the burner tube is made of composite. Its outer pipe is made plugged at the end and is mounted on a rod, and that through a slider - with an inner pipe connected to a protective screen and a gas fitting with an adjusting screw. A rod with a fixed slider serves to set the size of the firing area, and also prevents accidental rotation of the pipes relative to each other - that is, it also ensures that the holes of the outer and inner pipes match.

The gas is supplied through the fitting and the regulating nut into the pipe cavities, by expanding the perforated sections, the size of the firing section is set - for the entire soldered length of the workpiece. Thanks to this, warpage of the product is eliminated, uniform heating is ensured, the quality of the connection is improved, and mechanized soldering of parts up to 470 mm long becomes possible.

Gas soldering telescope
Gas soldering iron (click to enlarge): 1 - outer pipe, 2 - slider, 3 - rod, 4 - inner pipe, 5 - protective screen, 6 - adjusting nut, 7 - fitting to the gas pipeline

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