07837880027 Commercial Fusion Welding Engineers WC1 Bloomsbury WC2 Bank EC1 Finsbury Pipe Plastic Welding EC2 Old Street
- Details
- Category: Pipe Welding Engineers
Fusion welding is a generic term for welding processes that rely upon melting to join materials of similar compositions and melting points
Due to the high-temperature phase transitions inherent to these processes, a heat-affected zone is created in the material(although some techniques, like beam welding, often minimize this effect by introducing comparatively little heat into the work piece
Contrast with solid-state welding which does not involve melting of materials.
Types of fusion welding include :
Arc welding is a type of welding that uses a welding power supply to create an electric arc between an electrode and the base material to melt the metals at the welding point. They can use either direct (DC) or alternating (AC) current, and consumable or non-consumable electrodes. The welding region is usually protected by some type of shielding gas, vapor, and/or slag.
Oxy-fuel welding (commonly called oxyacetylene welding, oxy welding, or gas welding and oxy-fuel cutting are processes that use fuel gases and oxygen to weld and cut metals, respectively. Oxy-fuel is one of the oldest welding processes. Still used in industry, in recent decades it has been less widely utilized in industrial applications as other specifically devised technologies have been adopted. It is still widely used for welding pipes and tubes, as well as repair work. It is also frequently well-suited, and favored, for fabricating some types of metal-based artwork.
In oxy-fuel welding, a welding torch is used to weld metals. Welding metal results when two pieces are heated to a temperature that produces a shared pool of molten metal. The molten pool is generally supplied with additional metal called filler. Filler material depends upon the metals to be welded.
In oxy-fuel cutting, a torch is used to heat metal to its kindling temperature. A stream of oxygen is then trained on the metal, burning it into a metal oxide that flows out of the kerf as slag.
Torches that do not mix fuel with oxygen (combining, instead, atmospheric air) are not considered oxy-fuel torches and can typically be identified by a single tank (Oxy-fuel cutting requires two isolated supplies, fuel and oxygen). Most metals cannot be melted with a single-tank torch. As such, single-tank torches are typically used only for soldering and brazing, rather than welding.
Electric resistance welding (ERW) refers to a group of welding processes such as spot and seam welding that produce coalescence of faying surfaces where heat to form the weld is generated by the electrical resistance of material vs the time and the force used to hold the materials together during welding. Some factors influencing heat or welding temperatures are the proportions of the workpieces, the coating or the lack of coating, the electrode materials, electrode geometry, electrode pressing force, weld current and weld time. Small pools of molten metal are formed at the point of most electrical resistance (the connecting surfaces) as a high current (100–100,000 A) is passed through the metal. In general, resistance welding methods are efficient and cause little pollution, but their applications are limited to relatively thin materials and the equipment cost can be high (although in production situations the cost per weld may be as low as $0.04 USD per weld depending on application and manufacturing rate).
Laser beam welding (LBW) is a welding technique used to join multiple pieces of metal through the use of a laser. The beam provides a concentrated heat source, allowing for narrow, deep welds and high welding rates. The process is frequently used in high volume applications, such as in the automotive industry.
Like electron beam welding (EBW), laser beam welding has high power density (on the order of 1 MW/cm2) resulting in small heat-affected zones and high heating and cooling rates. The spot size of the laser can vary between 0.2 mm and 13 mm, though only smaller sizes are used for welding. The depth of penetration is proportional to the amount of power supplied, but is also dependent on the location of the focal point: penetration is maximized when the focal point is slightly below the surface of the workpiece.
A continuous or pulsed laser beam may be used depending upon the application. Milliseconds long pulses are used to weld thin materials such as razor blades while continuous laser systems are employed for deep welds.
LBW is a versatile process, capable of welding carbon steels, HSLA steels, stainless steel, aluminum, and titanium. Due to high cooling rates, cracking is a concern when welding high-carbon steels. The weld quality is high, similar to that of electron beam welding. The speed of welding is proportional to the amount of power supplied but also depends on the type and thickness of the workpieces. The high power capability of gas lasers make them especially suitable for high volume applications. LBW is particularly dominant in the automotive industry.
West Central London : WC1 covers the Bloomsbury & Gray's Inn area, WC2 Holborn , Strand , Covent Garden area, East Central London : EC1 covers the Clerkenwell, Finsbury, Barbican area, EC2 covers the north eastern (Moorgate, Liverpool Street) area of The City, EC3 covers the south eastern (Monument, Aldgate, Fenchurch St, Tower Hill) area of The City, EC4 covers the western (Fleet Street, Temple, Blackfriars, St Paul's) EC1 Clerkenwell EC1 Farringdon EC1 Aldersgate EC1 Angel EC1 Aldgate EC1 Finsbury pipe fusion welding, fusion welding, fusion welding plastic pipe, electric fusion welding, fusion welding courses, fusion welded pipe EC1 Barbican EC1 Goswell EC1 St. Luke's Emergency 24 Hrs family run recommended Central heating inspection and installer EC2 Bank recommended Plumber EC2 Bishopsgate EC2 Broad Street EC2 Broadgate EC2 Cheapside street EC2 Liverpool Street EC2 London Wall EC2 Moorgate EC2 Old Street EC2 Shoreditch EC2 Strand EC2 Smithfield EC3 Billingsgate ,EC3 Fenchurch Street EC3 Tower Hill EC3 Monument EC3 Tower of London Emergency 24 Hrs plumber in London corgi gas engineer plumber in London EC4 Blackfriars EC4 Fleet Street EC4 Cannon EC4 St. Paul's EC4 Mansion House EC4 Ludgate Hill fusion weld pipe, pipe welding, high density, polyethylene, WC1 Holborn Viaduct Emergency 24 Hrs family run recommended plumber corgi registered Plumber WC1 Holborn WC1 Gray's Inn WC1 Bloomsbury Emergency 24 Hrs family run recommended plumber corgi registered WC2 Leicester Square WC2 Covent Garden WC2 Soho London plumber, West Central London : WC1 covers the Bloomsbury & Gray's Inn area, WC2 covers the Holborn , Strand , Covent Garden,West London : W1 covers the West End, including Mayfair, Soho and south Marylebone, W1 Bond Street, Soho, W1 Park Lane, Parliament Square, Big Ben, London Eye (Wheel), London Bridge, Tower Bridge, Downing Street, Knightsbridge, London city airport, Heathrow airport, London airport, Stansted, Hayes, Chislehurst W1 Piccadilly Circus W1 Great Portland Street , W1 Bond Street ,W1 Goodge Street ,Regent Street , Oxford Circus W1, Oxford Street, Warren Street, Marble Arch , butt fusion welding, mig welding, plastic welding Marylebone W1 Mayfair,Tottenham Court Road W1, Westminster , W1 Westminster ,W2 Bayswater, Lancaster Gate W2 plumber City of Westminster W2 Paddington , W2 Royal Oak, Westbourne Green, Westbourne Park W2 covers the Paddington, Bayswater, Hyde Park area, W3 Acton, hdpe pipe, welding ,pipe welding engineers , arc welding W3 South Acton, Acton Town W3 Chiswick High Road, W3 Gunnersbury , W3 Bedford Park , Turnham Green , W4 Chiswick, W4 Bedford Park , W5 Ealing & Broadway , W5 South Ealing , North Ealing, West Ealing, W5 Western Avenue, W6 Hammersmith, W6 Brook Green, Great West Road W6, Hanger Lane, W6 Barons Court W7 Boston Manor W7 Elthorne Park, Hanwell W7 Boston Manor, Kensington, High Street , W7 Hanwell, W8 Kensington (central Kensington), W8 West Kilburn , W8 Kensington , W8 High Street Kensington, W9 Warwick Avenue welding plastic, electro fusion welder, electrofusion welding, socket fusion welding, plastic welder, welding tools, poly pipe fittings, poly pipe installation W9 Maida Hill , W9 Westway ,Maida Hill (also covers Maida Vale), W10 Ladbroke Grove, W10 Latimer Road , Maida Vale, Warwick Avenue , Warwick Park ,W10 Ladbroke Grove, W10 West Kilburn, Westway W10, North Kensington, W11 Latimer Road W11 Notting Hill, Holland Park, W11 Holland Park, Notting Hill, W11 Notting Hill Gate Westbourne Grove, Goldhawk Road , W12 Shepherd's Bush, fusion welder, polyethylene welding rod, pipe welding toolsW12 Goldhawk Road , W12 Shepherds Bush , W12 Uxbridge Road, W12 White City West London ,W12 North Kensington ,Uxbridge Road, W12 North Kensington ,W13 West Ealing, W13 Drayton Green , W13 Northfields , W14 Park, W14 West Olympia, W14 Hammersmith ,W14 Kensington & Chelsea, W14 West Olympia , W14 West Kensington
