Commercial Pipeline Installation Stirling Road TN13

Thermite welding

Exothermic welding, also known as exothermic bonding, thermite welding (TW), and thermit welding, is a welding process for joining two electrical conductors, that employs superheated copper alloy to permanently join the conductors. The process employs an exothermic reaction of a copper thermite composition to heat the copper, and requires no external source of heat or current. The chemical reaction that produces the heat is an aluminothermic reaction between aluminium powder and a metal oxide.

The reaction reaches very high temperatures, depending on the metal oxide used. The reactants are usually supplied in the form of powders, with the reaction triggered using a spark from a flint lighter. The activation energy for this reaction is very high however, and initiation requires either the use of a "booster" material such as powdered magnesium metal or a very hot flame source. The aluminium oxide slag that it produces is discarded.

When welding copper conductors, the process employs a semi-permanent graphite crucible mould, in which the molten copper, produced by the reaction, flows through the mould and over and around the conductors to be welded, forming an electrically conductive weld between them. When the copper cools, the mould is either broken off or left in place.Alternatively, hand-held graphite crucibles can be used. The advantages of these crucibles include portability, lower cost (because they can be reused), and flexibility, especially in field applications.

The weld formed has higher mechanical strength than other forms of weld, and excellent corrosion resistance. It is also highly stable when subject to repeated short-circuit pulses, and does not suffer from increased electrical resistance over the lifetime of the installation. However, the process is costly relative to other welding processes, requires a supply of replaceable moulds, suffers from a lack of repeatability, and can be impeded by wet conditions or bad weather (when performed outdoors).

Exothermic welding is usually used for welding copper conductors but is suitable for welding a wide range of metals, including stainless steelcast iron, common steelbrassbronze, and Monel. It is especially useful for joining dissimilar metals.

 

Our Pipe Experts And Multi-Trades Specialist And Our Team Are More Than Happy To Assist All Kinds Of Commercial And Residential Clients.

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N22 Crosts Lane, Glendale Avenue, Hampshire Road, Lascotts Road, Lloyd Thomas Court, Lyndhurst Road, Marquis Road, N22 Maryland Road, Parkhurst Road, Shropshire Road, Sidney Road, Sylvan Avenue, Woodside Road, N22 Arcadian Gardens, Cross Road, Crosts Lane, N22 Glendale Avenue, Lyndhurst Road, Maryland Road, Sylvan Avenue, N22 Wolves Lane, Woodside Road, Boreham Road, Chesthunte Road, Eldon Road, N22 Ellenborough Road, N22 Gospatrick Road, Grainger Road, N22 Granville Road, Kevelioc Road, Mark Road, Maurice Avenue, N22 Melrose Avenue, New Road, N22 Penniston Close, N17 Risley Avenue, N17 Sandra Close, N17 Saxon Road, Teynton Terrace, N17 Tintern Road, Topham Square, Turnant Road, Walpole Road, Wateville Road, N17  Westbury Avenue, N22 The Roundway, Berwick Road, Boreham RoadDarwin Road, Eldon Road, Ellenborough Road, Elm Road, Forfar Road, Gladstone Avenue, N22 Grainger Road, Granville Road, N22 Homecroft Road, N22 Lymington Avenue, N22 Mark Road, N22 Melrose Avenue, New Road, Norman Avenue, Paisley Road, Penniston Close, Sandford Avenue, Sandra Close, N17 Saxon Road, N22 Teynton Terrace, Tintern Road, Turnant Road, Lordship Lane, N22 Acacia Road, NBerwick Road, Bracknell Close, N22 Coombe Road, Darwin Road, Douglas Road, Dunbar Road, N22 Elm Road, Farrant Avenue, Forfar Road, Gladstone Avenue, Leith Road, Lymington Avenue, Melrose Avenue, Morley Avenue, N22 Moselle Avenue, N22 Progress Way, Salisbury Road, Solway Road, Stirling Road, N22 Vincent Road, Winkfield Road,Kingston on Thames,TW1, TW2, TW2, TW3, TW4, TW5, TW6, TW7, TW8, TW9, TW10, TW11, TW12, TW13, TW14, TW15, TW16, TW17, TW18, TW19, TW20, Uxbridge UB1, UB2, UB4, UB5, UB6, UB7, UB8, UB9, UB10, UB11, UB18  Kent : TN1, TN2, TN3, TN4, TN5, TN6, TN7, TN8, TN9, TN10, TN11, TN12, TN13, TN14, TN15, TN16, TN17, TN18, TN19, TN20, TN21, TN22, TN23, TN24, TN25, TN26, TN27, TN28, TN29, TN30 Richmond Upon Thames : KT1, KT2, KT3, KT4, KT5, KT6, KT7, KT8, KT9, KT10, KT11, KT12, KT13, KT14, KT15, KT16, KT17, KT18, KT19, KT20, KT21, KT22, KT23, KT24  Heathrow Airport, London City City Airport, Stansted Airport, Gatwick Airport, Luton Airport, Hertfordshire

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