(redirected from spot welding)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to spot welding: Seam welding, Projection Welding
The process of fusing one metal to another using combustible gas, covered electrode arcs, and gas-shielded arcs; welding exposes welders to gases, metal fumes, and toxins, and increases risk of lung cancer and mesothelioma


n a process used to join metals.
welding, arc and gas,
n See welding, fusion.
welding, cold,
n the property of welding at room temperature when clean surfaces are pressed into contact. This property is exhibited to the highest degree by gold in the form of foil or crystals.
welding, fusion,
n a process in which parts are melted and fused together. Also called
arc and gas welding.
welding, pressure,
n a welding process in which the parts are not melted, although heat is usually required. Recrystallization across the interface occurs. Gold foil is welded by pressure without temperature elevation. Also called
resistance welding and
spot welding.
welding property,
n the characteristic of certain materials, especially metals, to firmly unite together when subjected to heat or pressure in a suitable environment.
welding, resistance,
n See welding, pressure.
welding, spot,
n See welding, pressure.
References in periodicals archive ?
1" value represents arc welding machine, "2" represents inert-gas welding machine, "3" represents spot welding machine.
In the outer area of the nugget, hardness showed a lower value than that of the base metal due to the annealing effect of the temperature in the spot welding process.
In this study, the applicability of the new Friction Spot Welding process for producing overlap joints of an AA6181-T4 is investigated.
The method of obtaining contact electrodes for pressure spot welding by cladding composite layers has technically and economically benefits as follows:
After testing, one spot welding has been achieved; the joint was tested at shearing traction accordingly to the standard and was established supported force.
The friction stir spot welding experiments were carried out welding two identical plates of the same material (aluminium alloy 5754 was used for the experiments).
Realize also that unlike spot welding, only one-sided access is needed for laser welding, and unlike arc welding, the actual laser equipment can be a considerable distance away from the work area, so otherwise inaccessible areas can be readily reached because the work is being done by a beam of light, not a physical tool.
The solution proposed in this paper is the development of new spot welding electrodes (for spot welding) reinforced using laser beam remelting and carbides embedding, that are not toxic for people and the environment, since they do not contain metallic elements such as Cr, Be, Zr.
The brochure demonstrates examples of deep drawing, spot welding, pressing, roll forming, screen printing and press forming.
The 20- and 40-kHz, 500W units are designed for spot welding, staking, and inserting.
Topics include friction stir welding of an aluminum coal hopper railcar, friction stir joining of thermoplastics, numerical simulation of a refill fraction stir spot welding process, and liquid metal embrittlement of MP-159 pin tools.