hot-gas welding

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• hot gas welding — A welding process involving the joining of thermoplastic materials by softening with a jet of hot air, then joining them at the softened points …   Dictionary of automotive terms

• gas welding — A welding process widely used in body repair shops (now being gradually replaced by MIG welding). Also called oxyacetylene welding. Also see hot gas welding …   Dictionary of automotive terms

• welding — Art of fastening metals (or plastic) together by means of interfusing them. They are heated to a suitable temperature. In some cases pressure is used to bond them together. In other cases a filler material (solder) is used to join them. Among the …   Dictionary of automotive terms

• gas — [1] A non solid material. It can be compressed. When heated, it will expand; and when cooled, it will contract (such as air.) [2] A common term for gasoline. The British term is petrol. [3] A term for LPG or propane. Also see bottled gas [4] A… …   Dictionary of automotive terms

• Welding — is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material (the weld puddle ) that cools to… …   Wikipedia

• welding — Technique for joining metallic parts, usually through the application of heat. Discovered in the 1st millennium AD during attempts to manipulate iron into useful shapes, the technique produced a strong, tough blade. Welding traditionally involved …   Universalium

• Gas tungsten arc welding — TIG welding of a bronze sculpture Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG …   Wikipedia

• Plastic welding — is the process of welding plastic parts together. There are several techniques:Hot gas weldingThis is a plastic welding technique which is analogous to gas welding of metals, though the specific techniques are different. A specially designed heat …   Wikipedia

• Welding helmet — Welding helmets are headgear used when performing certain types of welding to protect the eyes, face and neck from flash burn, ultraviolet light, sparks and heat. Most commonly used with arc welding processes such as shielded metal arc welding… …   Wikipedia

• Welding defect — A welding defect is any flaw that compromises the usefulness of the finished weldment. According to the American Society of Mechanical Engineers (ASME) welding defect causes are broken down into the following percentages: 41% poor process… …   Wikipedia

• Gas compressor — A gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume. Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. As gases are… …   Wikipedia