Emergency Pipe Purging & Tightness Test RM4, RM5

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.

  • Landlords, tenants                                                                * Overseas clients in all countries
  • Commercial – domestic Landlord or tenant                     * Clients from Surgeries, clinics, hospitals
  • Clients in cinemas or theatres                                             * Hotel Clints
  • Restaurant Clients                                                                 * Clients in Pub - Cafe
  • Office Clients                                                                          * Supermarket Clients
  • Shopping mall Clients                                                           * Clients in Commercial Buildings
  • Clients in Colleges, universities or schools                       * Clients in Hospital
  • Clients at Clinic,Surgery                                                       * Clients in the Markets
  • Clients who work in all commercial properties               * Clients in the showrooms
  • Clients in the showroom                                                      * Senior Citizen Clients
  • Charity clients                                                                        * Charity Clients
  • Letting agent & Property maintenance customers         * Other Contractors and Trades Clients
  • Customers in museum                                                         * Customers in building sites      
  • Anyone in small, medium,large property                         * Clents who live on the boats
  • Clients who are in Mobile Caravans                                  * Production Factory clients 
  • Clients who are at Airports                                                 * Clients in Factory  

commercial pipe fusion welder Halstead, Harwich

gas safe thames water enginerer 

Available 7 days per week
24 Hours Per Day

07801295368
Request a Quote

EC4V, EC4R, EC4P,EC4N, EC4M,EC4A, Westend London W1, W2, W3, W4, W5, W6, W7, W8, W10, W11, W12, 14 Northwest London NW1, NW2, NW3, NW4, NW5, NW6, NW7, NW8, NW9, NW10, NW11 ,East London E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11, E12, E13, E14, E15, E16 E17, E18 North London N1, N2, N4, N5, N6, N7, N8, N9, N11, N13, N14, N15, N18, N21, N22, N12, N16 ,N17, N19, N20, N21, South West London SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW17, SW18, SW19, SW20 Croydon CR0, CR1, CR2, CR3, CR4, CR5, CR6, CR7,CR8 South East London, SE1, SE2, SE3, SE4, SE5, SE6, SE7, SE8, SE9, SE10 ,SE11, SE12, SE13, SE14, SE15, SE16, SE17, SE18, SE19,SE20, SE21, SE22, SE23, SE24, SE25, SE26, SE27, SE28 Southend On Sea : SS1, SS2, SS3, SS4, SS5, SS6, SS7, SS8, SS9, SS10, SS11, SS12, SS13, SS14, SS15, SS16, SS17,SS18 Clacton-on-Sea SS2, Southend SS5, Hockley,SS6 Rayleigh, SS7 Benfleet,SS8 Canvey Island, SS9 Eastwood, SS12 North Benfleet, Wickford SS14, Basildon, SS17 Corringham,Stanford Le Hope,Colchester CO1,CO2,CO3,CO4,CO5 Clacton-on-SeaCO6,CO7,CO8,CO9,CO10 ColchesterCO11,CO12,CO13 BuresCO14,CO15,CO16 Frinton-on-Sea, Halstead, Harwich, Manningtree and Walton-on-the-Naze, Sudbury, Suffolk,  CB9, CB10,  CB11, BR1, BR2, BR3, BR4, BR5, BR6, BR7, BR8, BR9 Kent,HP1, HP2, HP3, HP4, HP5, HP6, HP7, HP8, HP9, HP10, HP11, HP12, HP13, HP14, HP15, HP16, HP17, HP18, HP19, HP20, HP21, HP22, HP23, HP27  St Albans : AL1, AL2, AL3, AL4, AL5, AL6, AL7, AL8, AL9, AL10  Watford  : WD2, WD3, WD4, WD5, WD6, WD7, WD17, WD18, WD19, WD23, WD24, WD25, Bromley : BR1, BR2, BR3, BR4, BR5, BR6, BR7, BR8  Harrow : HA1, HA2, HA3, HA4, HA5, HA6, HA7, HA8, HA9  Croydon, Dartford DA1, DA2, DA3, DA4, DA5, DA6, DA7, DA8, DA9, DA10, DA11, DA12, DA13, DA14, DA15, DA16, DA17, DA18 Essex : RM1, RM2, RM3, RM4, RM5, RM6, RM7, RM8, RM9, RM10, RM11, RM12, RM13, RM14, RM15, RM16, RM17, RM18, RM19, RM20, IG1, IG2, IG3, IG4, IG5, IG6, IG8, IG9, IG10, IG11 Twickenham,N22 - Wood Green district: Wood Green, Bounds Green (part), Bowes Park, Haringey, Enfield, Alexandra Palace, Greater London, Alexandra Park, Greater London, Bowes Park, Greater London, Noel Park, Greater London, Wood Green, Greater London, Adams Mews, N22 Arcadian Gardens, Cheshire Road, Cross Road

download 15

WE COVER ALL LONDON BOROUGHS AND SURROUNDING CITIES