Welding Torch


Also found in: Dictionary, Wikipedia.
Related to Welding Torch: arc welding, Gas welding, Cutting torch

welding torch

[′weld·iŋ ‚tȯrch]
(engineering)
A gas-mixing and burning tool for the welding of metal.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Welding Torch

 

part of a welding apparatus. In electric welding, the torch conducts electric current to the electrode and carries the shielding gas to the arc zone of the welding arc. In gas welding, the torch serves to adjust the mixture of gases and to guide the welding flame. The torch may be moved along the edges being welded by hand (in manual or semiautomatic welding) or automatically (in automatic welding).

Welding torches used in electric welding with consumable electrodes have a head equipped with an interchangeable tip through which the electrode wire extends. The head conducts the current and guides the electrode. A stream of gas is fed through a guide nozzle; the gas shields the weld puddle and the electrode from the atmosphere. Torches used with nonconsumable electrodes have a head equipped with a current-carrying collet clamp.

Welding torches used in gas welding feed the fuel gases, such as acetylene and oxygen, to the weld site. The gases pass through two channels and regulating valves and then enter a mixing chamber, where a combustible mixture is prepared; the mixture then enters the head. Low-pressure torches are equipped with a built-in injector that provides suction of the fuel gases. In high-pressure torches, the fuel gas is fed under pressure from gas generators or from cylinders.

M. G. BEL’FOR

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
In this paper, a spatial interpolation algorithm for the saddle-shaped curve is proposed by using the variable angle interpolation control method for the interpolation stepping angle and establishes welding torch pose model and trajectory model based on space analytic geometry.
I saw the blue and white flame bursting out of the welding torch, the sparks showering the worker's bare hands, his naked eyes squinting warily at the point the flame meets steel, his teeth gritted and his lips pursed with the strain.
British welding ancillaries manufacturer Huntingdon Fusion Techniques (HFT) provide a wide range of trailing shields to fit any make of TIG (GTAW), MIG or Plasma (PAW) welding torch for manual or automatic welding.
* DC engine (MCC) used for oscillation movement of welding torch and welding head position correction.
Without the CAD software, "We'd end up solving many of our problems with a welding torch. That's expensive and time-consuming," Kolb said.
After some experiments, structural craftsmen determined the launchers could be destroyed using a welding torch, so the craftsmen made a work table to hold the launchers while they were torched.
Started when sparks from a welding torch ignited air conditioning filters, the fire caused minor smoke and water damage.
Thick, black fumes produced by the fire - which started when sparks from a welding torch blew onto a pile of 1,500 tons of tyre wire - blew over the sea onto the Headland.
A wide variety of commercial and industrial operations subject their employees to dangerously high temperatures, whether the peril is as mundane as the business end of a live welding torch or as extreme as a cauldron of molten metal on its way to casting.
The torch tower is moved on an easy-glide rail and has a smooth action torch geometry setting system to make it simple to lock the welding torch into the perfect position.
Options available for the FlexArc[R] C cell include the ABB automated calibration system BullsEye, a torch cleaner assembly, SmarTac tactile sensing, AWC through-the-arc weld tracking, welding torch water cooler, photo-optic light curtains, fume extraction hood, and tooling fixtures.
She plays a girl who is a dab hand with a welding torch and who inherits her dad's junkyard.