Welding without electricity. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Welding without electricity. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / welding equipment

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An ordinary match suggested the design of a thermite pencil. With its help, it is quite possible to weld simple metal products at their summer cottage.

Welding without electricity

The pencil is a piece of wire made of ordinary carbon steel. Its diameter - from 2 to 3 mm - depends on the thickness of the parts to be welded. The thicker, the larger the diameter.

Outside, a thermite mixture is applied to the wire, steeply kneaded with glue. Its composition: 24% (by volume) aluminum filings (but not silumin alloy), and 76% iron oxide. Particle sizes up to 0,5 mm.

At the end of the thermite pencil is a seed, very similar to a match head. It consists of 1 part (by weight) of Bertolet salt and 0,5 part of fine aluminum filings. Both components are also kneaded with glue. It is clear that the seed is needed to initiate the combustion reaction.

That's the whole trick. But we remind you that when welding, be sure to use a holder and glasses with dark glasses.

Author: V.Buryak, Lysychansk

See other articles Section welding equipment.

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