SU67787A1 - Torch for atomic hydrogen welding - Google Patents

Description

A torch is offered for atomic hydrogen welding using two electrodes mounted on a common holder for them. Through a volt arc formed between the ends of the electrodes, hydrogen is blown, which is subjected to thermal dissociation in the arc.

Such torches are generally known, and the use of double carbon electrodes in arc welding is equally well known.

In the proposed burner, said electrodes form a candle composed of two carbon rods having longitudinal grooves on the surface and stacked with each other so that these grooves form a channel for the passage of hydrogen from the holder to the volt arc burning at the end of the candle.

Such a torch can reduce the consumption of hydrogen compared to normal atomic hydrogen welding; to increase productivity, because there is no need for B frequent rearrangement of electrodes; weld in hard to reach places. In addition, it requires low consumption of the Electro-angles (since, the passage through the channel between the coal, hydrogen removes heat from them and does not allow them to acidify in the air from overheating of the entire surface). Low cost of candles and ease of manufacture.

6 Code Release 2. 1947

makes it available for wide application.

FIG. I shows the scheme of the proposed burner; in fig. 2 - welding candle; in fig. 3 - a cross-section of a candle on AB.

A welding candle consists of two Electro-angles 1 and 2, arranged parallel to one another and sintered with a layer of gypsum, kaolin, quartz, etc., and this layer serves as electrical insulation.

Before sintering, longitudinal grooves are pierced into the electro-angles, which, when the coals are folded into the candle, form an internal channel 3 through which hydrogen is passed during welding.

The end of the candle is provided with a base 4, similar to the base of an electric lamp, with the only difference that it has a central hole forming the continuation of channel 3. The use of such a base provides ease of exploitation. In operation, the welding candle is screwed into its socket 5 with its base, mounted on a burner equipped with a handle 6. The cartridge 5 supplies the candle with electric current and hydrogen at the same time.

Before igniting the volt arc, the flame of the hydrogen coming out of the candle has a yellowish tint; after ignition volt arc 7 between

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the ends of the coal 1 t 2 the flame takes a bright whitish shade.

With an increase in the rate of hydrogen release, the flame temperature rises sharply with the same amperage on the Electro-angle.

The parallel arrangement of the electro-angles provides a greater bulge in the volt arc 7, convenient for welding. An additional bulge is also created by hydrogen, which, by blowing an arc from the ends of the electro-angles, on exiting the aperture of the candle, changes from a molecular to an atomic state and creates a greater stability of the volt arc, thus ensuring a high quality of welding.

A welding candle can be used to boil the same metals and alloys as

are welded by conventional atomic hydrogen welding.

Subject invention

A torch for atomic hydrogen welding with a holder common to both electrodes, between which a volt arc is formed for the thermal dissociation of hydrogen, characterized in that said electrodes form a candle composed of two carbon rods having longitudinal grooves on the surface and folded together Another way is that these grooves form a channel for the passage of hydrogen from the holder to the volt arc burning at the end of the candle.

FIG. one

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FIG. 2