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Hot-gas welding is a manual plastic welding process for joining thermoplastic materials. A hot-gas torch is used to direct hot air to both the joint surface and weld rod, heating the materials to their softening temperature. Application of pressure on the heated weld rod to the joint surface bonds the materials together to form a completed weld. This technique is not easily automatized and is primarily used for repairs or individual manufacturing needs of small or complex components.
Hot-gaswelding is a manual plastic welding process for joining thermoplastic materials. A hot-gas torch is used to direct hot air to both the joint surface...
rheological weldability) for plastics. A number of techniques are used for welding of semi-finished plastic products as given below: Hotgaswelding, also known...
Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) and metal active gas (MAG) is a welding process in which an...
that is an acceptable shielding gas for welding steel. Improper choice of a weldinggas can lead to a porous and weak weld, or to excessive spatter; the...
Gas tungsten arc welding (GTAW, also known as tungsten inert gaswelding or TIG, and heliarc welding when helium is used) is an arc welding process that...
methods include solvent welding (of thermoplastics) using chemicals to melt materials being bonded without heat, and solid-state welding processes which bond...
finished weld. Fit-up of weld joint - tack welding the base material components (using hotgaswelding) or using a clamping system Welding - adding the...
oxygen (O2) gases. This gaseous mixture is used for torches to process refractory materials and was the first gaseous mixture used for welding. Theoretically...
A welding helmet is a type of personal protective equipment used in performing certain types of welding to protect the eyes, face, and neck from flash...
tungsten inert gas (TIG) welding. Also known as manual metal arc (MMA) welding or stick welding. Also known as electric resistance welding (ERW). "جوشکاری...
Forge welding (FOW), also called fire welding, is a solid-state welding process that joins two pieces of metal by heating them to a high temperature and...
reactive gases in air which can cause porosity in the solidified weld puddle. Inert gases are also used in gas metal arc welding (GMAW) for welding non-ferrous...
Fusion welding is a generic term for welding processes that rely on melting to join materials of similar compositions and melting points. Due to the high-temperature...
Robot welding is the use of mechanized programmable tools (robots), which completely automate a welding process by both performing the weld and handling...
arc welding, flux-cored arc welding, and submerged arc welding; but it can also occur in gas metal arc welding. This defect usually occurs in welds that...
Hyperbaric welding is the process of extreme welding at elevated pressures, normally underwater. Hyperbaric welding can either take place wet in the water...
Hot plate welding, also called heated tool welding, is a thermal welding technique for joining thermoplastics. A heated tool is placed against or near...
Laser beam welding (LBW) is a welding technique used to join pieces of metal or thermoplastics through the use of a laser. The beam provides a concentrated...
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...
utilize IR welds. IR welding is categorized as a form thermal plastic welding alongside hotgaswelding, hot tool welding, and extrusion welding. Although...
applications such as soldering, brazing, and welding, the latter using oxygen instead of air for producing a hotter flame, which is required for melting steel...
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 varying...
based on general hazard in the event of line puncturing during welding, not the welding process. Conditions: Vacuum conditions; Dissolved hydrogen in the...
gas tungsten arc welding processes (GTAW), to support uniform welding around a pipe that would be significantly more difficult using a manual welding...
salvage and clearance diving applications. Most underwater welding is direct current wet stick welding, and most underwater metal cutting is immersed oxygen-arc...
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