oxyhydrogen welding - ترجمة إلى العربية
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oxyhydrogen welding - ترجمة إلى العربية

METALWORKING TECHNIQUE USING A GASEOUS FUEL AND OXYGEN
Oxyacetylene; Cutting torch; Welding torch; Oxyacetylene torch; Oxyacetylene welding; Oxy-Fuel Welding and Cutting; Oxyfuel welding; Oxy-fuel welding; Oxyacetalene; Gas axe; Oxy-gas torch; Oxy-acetylene; Oxy-acetylene torch; Hot wrench; Oxy cutting; Oxyacetylene welding torch; Oxyacetylene welding torches; Oxy acetylene; Brazing torch; Oxyhydrogen welding; Gas welding; Flashback (welding); Flashback (in welding); Acetylene torch; Blowtorch goggles; Gas cutting; Blowtorching goggles; Acetylene burner; Oxygen gas torch; Steel profiling; Flame cutting; Oxy-acetylene welding; Oxy-acetylene burner; Smokewrench; Smoke wrench; Oxy-fuel cutting; Pressure gas welding; Oxygen-acetylene torch
  • Gas welding/cutting goggles and safety helmet
  • Compressed gas cylinders containing oxygen and MAPP gas
  • A cutting torch being used to cut a steel pipe
  • Fuel-rich butane torch flame
  • Acetylene generator as used in Bali by reaction of [[calcium carbide]] with water. This is used where acetylene cylinders are not available. The term 'Las Karbit' means acetylene (carbide) welding in Indonesian.
  • Oxy-acetylene Welding (OAW) station
  • Oxygas welding station (keep cylinders and hoses away from the flame)
  • Oxygen-rich butane torch flame
  • Cutting a rail just before renewing the rails and the ballast
  • Torch-cut pipe with visible drag lines (a signature of the torch's oxygen jet)
  • The top torch is a welding torch and the bottom is a cutting torch

oxyhydrogen welding         
لحام بالأكسجين والهيدروجين
oxy-acetylene         
مزيج من غاز الأكسجين والأستلين
Oxy-acetylene welding         
لحام أوكسي أسيتيليني

تعريف

Oxyhydrogen
·adj Of or pertaining to a mixture of oxygen and hydrogen; as, oxyhydrogen gas.
II. Oxyhydrogen ·add. ·adj Of, pertaining to, or consisting of, a mixture of oxygen and hydrogen at over 5000° F.

ويكيبيديا

Oxy-fuel welding and cutting

Oxy-fuel welding (commonly called oxyacetylene welding, oxy welding, or gas welding in the United States) and oxy-fuel cutting are processes that use fuel gases (or liquid fuels such as gasoline or petrol, diesel, bio diesel, kerosene, etc) and oxygen to weld or cut metals. French engineers Edmond Fouché and Charles Picard became the first to develop oxygen-acetylene welding in 1903. Pure oxygen, instead of air, is used to increase the flame temperature to allow localised melting of the workpiece material (e.g. steel) in a room environment. A common propane/air flame burns at about 2,250 K (1,980 °C; 3,590 °F), a propane/oxygen flame burns at about 2,526 K (2,253 °C; 4,087 °F), an oxyhydrogen flame burns at 3,073 K (2,800 °C; 5,072 °F) and an acetylene/oxygen flame burns at about 3,773 K (3,500 °C; 6,332 °F).

During the early 20th century, before the development and availability of coated arc welding electrodes in the late 1920s that were capable of making sound welds in steel, oxy- acetylene welding was the only process capable of making welds of exceptionally high quality in virtually all metals in commercial use at the time. These included not only carbon steel but also alloy steels, cast iron, aluminium, and magnesium. In recent decades it has been superseded in almost all industrial uses by various arc welding methods offering greater speed and, in the case of gas tungsten arc welding, the capability of welding very reactive metals such as titanium. Oxy-acetylene welding is still used for metal-based artwork and in smaller home-based shops, as well as situations where accessing electricity (e.g., via an extension cord or portable generator) would present difficulties. The oxy-acetylene (and other oxy-fuel gas mixtures) welding torch remains a mainstay heat source for manual brazing and braze welding, as well as metal forming, preparation, and localized heat treating. In addition, oxy-fuel cutting is still widely used, both in heavy industry and light industrial and repair operations.

In oxy-fuel welding, a welding torch is used to weld metals. Welding metal results when two pieces are heated to a temperature that produces a shared pool of molten metal. The molten pool is generally supplied with additional metal called filler. Filler material selection depends upon the metals to be welded.

In oxy-fuel cutting, a torch is used to heat metal to its kindling temperature. A stream of oxygen is then trained on the metal, burning it into a metal oxide that flows out of the kerf as dross.

Torches that do not mix fuel with oxygen (combining, instead, atmospheric air) are not considered oxy-fuel torches and can typically be identified by a single tank (oxy-fuel cutting requires two isolated supplies, fuel and oxygen). Most metals cannot be melted with a single-tank torch. Consequently, single-tank torches are typically suitable for soldering and brazing but not for welding.