Welding

alt=Welder stick welding a metal grate above their head|thumb|Overhead stick welding thumb|Arc welding metal plates|alt=Welder arc welding metal plates

Acetylene (systematic name: ethyne) is a chemical compound with the formula and structure . It is a hydrocarbon and the simplest alkyne. This colorless gas is widely used as a fuel and a chemical building block. It is unstable in its pure form and thus is usually handled as a solution. Pure acetylene is odorless, but commercial grades usually have a marked odor due to impurities such as divinyl sulfide and phosphine.

thumb|A thermite mixture using iron(III) oxide

metalworking technique using a gaseous fuel and oxygen

welding technique

thumb|right|Welders at work, . A welder is a person or equipment that fuses materials together. The term welder refers to the operator, the machine is referred to as the welding power supply. The materials to be joined can be metals (such as steel, aluminum, brass, stainless steel etc.) or varieties of plastic or polymer. Welders typically have to have good dexterity and attention to detail, as well as technical knowledge about the materials being joined and best practices in the field.

use of electrons to join metal parts via melting

electrical resistance welding process that applies current across two points on a sheet metal surface

welding using electric current to melt together metal parts at the joint

Solid-state welding process

welding metal at elevated pressure

solid-state welding process

welding process

surface breaking defect inspection method

non-destructive material testing using ultrasonic waves

solid state process where welding is accomplished by accelerating one of the components at extremely high velocity through the use of chemical explosives

welding process that uses thermite to create exothermic reaction to heat up the metal, and the molten metal joins two or more metal pieces together

technique used to connect a microchip to its package

inert or semi-inert gases that are commonly used in several welding processes

nondestructive testing method of inspecting materials

non-destructive method used to detect defects in ferrous materials

method of joining metal pieces

region of base material which is altered (but not melted) during a heat-intensive welding process

area of continuous connection of pieces of metal or plastic

flaw which compromises a weld's structural integrity

technical process for thermal cutting

device producing controlled flame produced by combusting a fuel gas

metallic wire used to fill the gap between the base metals to be joined.

welding processes which rely on melting to join materials

use of mechanized programmable tools, which completely automate a welding process by both performing the weld and handling the part

The weldability, also known as joinability, of a material refers to its ability to be welded. Many metals and thermoplastics can be welded, but some are easier to weld than others (see Rheological weldability). A material's weldability is used to determine the welding process and to compare the final weld quality to other materials.

type of resistance welding that does not use any filler metals

ferrite with a acicular microstructure

formal written document

metal welding process

pressure welding using a rotating tool

form of welding that uses electromagnetic induction to heat the workpiece

specialized area of welding

concept is used on ferrous materials, typically steel and cast iron, to determine various properties of the alloy when more than just carbon is used as an alloyant, which is typical

electric resistance welding technique

Hardfacing is a metalworking process where harder or tougher material is applied to a base metal. It is welded to the base material, and generally takes the form of specialized electrodes for arc welding or filler rod for oxyacetylene and gas tungsten arc welding. Powder metal alloys are used in plasma-transferred arc (PTA), also called powder plasma welding, and thermal spray processes like high-velocity oxygen fuel coating, plasma spray, spray and fuse, etc. Submerged arc welding, flux core arc welding (FCAW) and metal inert gas (MIG) / metal active gas (MAG) use continuously fed wire varyin

Welding using heat from X-ray

arc cutting process

type of resistance welding

Swordmaking techniques

mixture of hydrogen and nitrogen

form of welding where no additional filler material is added

process to join two surfaces

tool for generating heat and flame by burning propane

blob of melted metal produced during welding

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technique to produce alloys