Compact torch for welding with non-consumable electrode

 

The invention relates to the field of welding production, namely the small burners and is used for welding structures in remote places. Compact torch for welding with non-consumable electrode consists of a casing, a tube for supplying cooling water and shielding gas, collets for clamping the electrode, the nozzle and the gas lens. Tube for cooling water and shielding gas are located in the same horizontal plane next to each other, and reliable clamping of the electrode is provided by svorachivaniya collet having an outer tapered thread, in case. Thus the supply of protective gas nozzle is made through holes in the collet. This allows you to weld the parts in hard to reach places, and the presence of water cooling allows you to increaseburner capacity. 3 Il.

The invention relates to the field of welding and can be used for welding structures in hard to reach places.

Known burners Ar-10 and the BLOW-300 for welding with a consumable electrode in a protective gas (“Handbook of welding”, Ed. by Sokolova E. C., M., 1962, so 2, S. 386-389). Burners have a body, a water Roux is Oh conical surface, nonconsumable electrode and the nozzle. To obtain a laminar flow of shielding gas nozzle has an elongated shape, and the gas exits through the slots in the collet or holes located around the collet. Collet clamps the electrode due to its involvement in a smooth tapered bore of the housing when navorachivaya on the threaded end of the collet cap.

The disadvantage of this burner is great its height due to the presence of the cap and a long nozzle that does not allow her to use when welding in hard to reach places. In addition, the supply tube protective gas and tubes for cooling water are at different levels, which further increases its height.

Famous torch for arc welding with a consumable electrode in a protective gas (USSR Author's certificate No. 1291425, CL 23 To 9/16), in which the dimensions are reduced through the use of special water-cooled metal nozzle.

The disadvantage of this burner is the impossibility of its use for manual welding due to uninsulated nozzle.

Closest to the technical essence is the burner (USSR Author's certificate No. 1117164, CL 23 To 9/16), which provides increased maneuverability in tight spaces.

Nedostatochnyi its power.

An object of the invention is the combination of high power and reliability of the burner with the possibility of use in welding in hard to reach areas by reducing its size.

The technical result is achieved by the fact that the torch for welding with a consumable electrode in hard to reach places with the body, a tube for supplying shielding gas and cooling water, the collet, nonconsumable electrode, the nozzle and the gas lens, all three tubes are located in the same horizontal plane as the clamping collet is made with an external tapered thread.

In Fig.1 shows a longitudinal section of the burner; Fig.2 - cross section; Fig.3 is a view of the collet from the top.

The burner includes a housing 1, a shirt 2, the cover 3 and the tube 4, 5, 6, the collet 7, a tungsten electrode 10, a ceramic nozzle 11, a gas lens 12, a layer of heat resistant insulation 13. All casing parts are connected by soldering, hard soldering.

The burner works as follows.

In the housing 1 is screwed to the collet 7 having external tapered thread and the slot 9 to ensure the clamping of the electrode. The clamping of the electrode is performed by nose pliers or a special key for the holes 8. The welding current passes through the body and through the collet goes to the electrode 10. For the gas lens 12 enters the nozzle 11. When passing through the gas lens provides laminar flow of shielding gas. Cooling water flows through the tube 4, circulates in the cavity between the body 1 and the jacket 2 and exits through tube 5.

The proposed burner has a small size, which allows welding in confined spaces, while maintaining its high power.

Claims

Compact torch for welding in hard to reach places with the body, a tube for supplying a protective gas, the collet, nonconsumable electrode, wherein the burner has a tube for cooling water located in the same horizontal plane with a tube for supplying a protective gas, and the clamping collet is made with an external tapered thread.



 

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