AL SHIRAWI ENTERPRISES LLC. Dubai

Flux Cored Arc Welding (FCAW) is quite similar to MIG/MAG welding as far as operation and equipment are concerned. However, the electrode is not solid but consists of a metal sheath surrounding a flux core. The electrode begins life as a flat metal strip, which is formed first into a ‘U’ shape. Flux and alloying materials are deposited into the ‘U’, which is then closed into a tube by a series of forming rolls. As in MIG/MAG welding, the flux cored process depends on a gas shield to protect the weld zone from atmospheric contamination. The gas is either applied separately, in which case the electrode is referred to as a gas shielded flux cored electrode, or it is generated from the decomposition of gas forming ingredients contained in the flux core (self shielding). In addition to the gas shield, the flux cored electrode produces a slag covering for further protection of the weld metal as it cools. This is subsequently removed. GTAW/TIG Gas-Shielded Tungsten Arc Welding (also known as gas tungsten arc or TIG welding) is a process, which uses a non-consumable solid tungsten electrode. The electrode, the arc and the area surrounding the molten weld puddle are protected from the atmosphere by an inert gas shield. If a filler metal is necessary, it is added to the leading edge of the molten puddle. TIG welding produces exceptionally clean, high quality welds. As no slag is produced, the chance of slag inclusions in the weld metal is eliminated and the finished weld requires virtually no cleaning. TIG welding may be used for welding almost all metals and the process lends itself to both manual and automatic operation. TIG welding is most extensively used for welding aluminium and stainless steel alloys where weld integrity is of the utmost importance. It is widely used for high quality joints in the nuclear, chemical, aircraft and food industries.

Brazing is a metal-joining process whereby a filler metal is heated above and distributed between two or more close-fitting parts by capillary action. Brazed joints have been used in plumbing, air-conditioning, heating, electronics and numerous other applications for a very long time. A brazed joint will last a life time and is proven to do so. Only brazing can truly ensure leak free joints in critical applications

These cold thermal spray powders are applied with a flame powder spray system, such as the oxy-acetylene CastoDyn DS 8000. The powder is fed with help of injector effect or a carrier gas (nitrogen, argon or air) into a gas flame (often acetylene/oxygen). The flame heats the powder particles and propels the droplets towards the substrate forming a dense coating with good bonding properties. Due to the moderate transfer of heat to the powder particles and to the workpiece, the base metal stays relatively. Advantages Low heat input to the base metal minimizes distortion, warping and changes in the base metal. Cold is key to simplicity, Efficiency, speed and reliability. Wide range of powders can be sprayed. Spraying equipment is inexpensive. Easy to handle. The low level of noise and fumes during spraying facilitates setting up a new low cost spraying facility. Super Jet - S - Eutalloy SuperJet-S- Eutalloy® is an oxy-acetylene thermal spray torch, which delivers very precise anti-wear protective coatings, thanks to its sensitive controls. Alloy powders are sprayed onto the part to be coated and are fused simultaneously. Diffusion bonding with the base metal ensures that it does not reach its melting point.The dense coating is not affected by dilution and retains all its designed properties. For thermal spraying of Eutalloy® powders. Advantages Flexible, multi purpose and fast Rapid shut-off of acetylene and oxygen while maintaining setting Reliable and precise coatings Usable in all positions on a wide range of base metals, including steels, alloy steels, stainless steels and cast-iron