Documents matching your search: 20 [shown 10]
- Electron Beam Welding
Accordance to query: 48.74%
Fragments of message :
... Electron Beam Welding Electron beam welding is a welding process which produces coalescence of metals with the heat obtained from a concentrated beam composed primarily of high-velocity electrons impinging upon the surfaces to be joined...
More: http://euwelding.com/post_1202075926.html
... There were many requirements to weld refractory and reactive metals...
... These metals, because of their affinity for oxygen and nitrogen of the air, are very difficult to weld...
... In welding , the target is the base metal which absorbs the heat to bring it to the molten stage...
... This occurs when the highly accelerated electron hits the base metal...
... The succession of electrons striking the same place causes melting and then evaporation of the base metal...
... This creates metal vapors but the electron beam travels through the vapor much easier than solid metal...
... This causes the beam to penetrate deeper into the base metal...
... The cooling rate is much higher and for many metals this is advantageous...
... Filler metal is not used in electron beam welding...
... however, when welding mild steel highly deoxidized filler metal is sometimes used...
... This helps deoxidize the molten metal and produce dense welds...
... Almost all metals can be welded with the electron beam welding process...
... The metals that are most often welded are the super alloys, the refractory metals, the reactive metals, and the stainless steels...
... Many combinations of dissimilar metals can also be welded... - CNC punching, laser cutting, bending demonstrated
Accordance to query: 12.09%
Fragments of message :
... CNC punching, laser cutting, bending demonstrated The automation of sheet metal working processes, including CNC punching , CNC laser cutting and CNC press brakes will be emphasised for MACH 2008 visitors The Trumpf stand at the UK's MACH 2008 machine tool exhibition will emphasise that there is no need to compromise on automation or unmanned sheet metal working...
More: http://euwelding.com/post_1203436391.html
... The machines accept flexible and expandable automation...
... Degrees of automation - many of the machines featured will demonstrate different degrees of automation...
... Dependent on the machine model chosen, any sheet thickness from 1 - 25mm can be processed with the machine's single cutting head as the engineering beam guidance system automatically adapts to the material and adjusts the laser beam...
... In common with all of the Trumpf high productivity machines this model can be specified with automation to suit the need from semi-automatic loading through to a fully automatic manufacturing cell with warehouse interface...
... Marking and welding - the TruMark Station 5000 performs a wide range of marking and microprocessing tasks on various metals, plastics and ceramics... - History of Welding
Accordance to query: 9.63%
Fragments of message :
... The Middle Ages brought advances in forge welding, in which blacksmiths pounded heated metal repeatedly until bonding occurred...
More: http://euwelding.com/post_1200287944.html
... Welding was transformed during the 19th century—in 1800, Sir Humphry Davy discovered the electric arc, and advances in arc welding continued with the inventions of metal electrodes by a Russian, Nikolai Slavyanov, and an American, C...
... Strohmenger released a coated metal electrode in Britain, which gave a more stable arc, and in 1919, alternating current welding was invented by C...
... It was largely replaced with arc welding , as metal coverings (known as flux) for the electrode that stabilize the arc and shield the base material from impurities continued to be developed...
... During the following decade, further advances allowed for the welding of reactive metals like aluminum and magnesium...
... Gas tungsten arc welding , after decades of development, was finally perfected in 1941, and gas metal arc welding followed in 1948, allowing for fast welding of non-ferrous materials but requiring expensive shielding gases...
... Shielded metal arc welding was developed during the 1950s, using a flux coated consumable electrode, and it quickly became the most popular metal arc welding process... - Thermit Welding
Accordance to query: 5.42%
Fragments of message :
... Thermit Welding Thermit welding (TW) is a welding process which produces coalescence of metals by heating them with superheated liquid metal from a chemical reaction between a metal oxide and aluminum with or without the application of pressure...
More: http://euwelding.com/post_1202070077.html
... Filler metal is obtained from an exothermic reaction between iron oxide and aluminum...
... Since it is almost twice as hot as the melting temperature of the base metal melting occurs at the edges of the joint and alloys with the molten steel from the crucible...
... Normal heat losses cause the mass of molten metal to solidify, coalescence occurs, and the weld is completed... - Ignition of a thermite reaction
Accordance to query: 5.42%
Fragments of message :
... Often, strips of magnesium metal are used as fuses...
More: http://euwelding.com/post_1202072228.html
... Because metals burn without releasing cooling gases, they can potentially burn at extremely high temperatures...
... Reactive metals such as magnesium can easily reach temperatures sufficiently high for thermite ignition...
... A significant danger of magnesium ignition is the fact that the metal is an excellent conductor of heat...
... Similarly, finely-powdered thermite can be ignited by a regular flint spark lighter, as the sparks are burning metal (in this case, the highly-reactive rare-earth metals lanthanum and cerium)... - Disc laser welds 10mm thick mild steel
Accordance to query: 4.3%
Fragments of message :
... Disc laser welds 10mm thick mild steel Offering up to 8kW power, a disc-type laser has low running cost and 25% efficiency, and will weld almost all metals with ease and even highly reflective metals such as copper or aluminium...
More: http://euwelding.com/post_1203435766.html
... It can process almost all materials with ease and even highly reflective metals such as copper or aluminium...
... The Trumpf TruDisk 8002 is especially suited to the more difficult welding jobs on thick sheet metal...
... Similarly hybrid welding and cutting thick sheet present no problem to this disc laser... - Laser Beam Welding
Accordance to query: 4.13%
Fragments of message :
... When using the laser beam for welding the electromagnetic radiation impinges on the surface of the base metal with such a concentration of energy that the temperature of the surface is melted and volatilized...
More: http://euwelding.com/post_1202071899.html
... The beam penetrates through the metal vapor and melts the metal below...
... One of the original questions concerning the use of the laser was the possibility of reflectivity of the metal so that the beam would be reflected rather than heat the base metal...
... It was found, however, that once the metal is raised to its melting temperature the surface conditions have little or no effect...
... Laser beam welding has a tremendous temperature differential between the molten metal and the base metal immediately adjacent to the weld... - Welding and cutting automation to be exhibited
Accordance to query: 4.13%
Fragments of message :
... Welding and cutting automation to be exhibited Equipment for the robotic automation of MIG and TIG welding equipment as well as plasma-arc cutting automation systems will be demonstrated at MACH 2008 for complex fabrications Industrial equipment supplier and sole UK representative for Cebora welding products , Wilkinson Star of Worsley, Manchester, will be launching a series of welding automation systems at the UK's MACH 2008 machine tool exhibition in April...
More: http://euwelding.com/post_1203435237.html
... There will also be a number of other high performance welding power sources and ancillary equipment from the Cebora welding automation range...
... Managing director at Wilkinson Star, Stephen Murray, said: 'MACH 2008 is an excellent platform on which to launch the latest Welding Automation systems available from Cebora...
... As a Company, we have extensive experience in selling high technology welding products and our welding team has the knowledge and experience required to continue taking us forward with welding automation...
... Welding Automation opens up new industries and opportunities for Wilkinson Star and also Cebora, who we have represented in the UK for many years'... - Thermite
Accordance to query: 3.76%
Fragments of message :
... Thermite Thermite is a pyrotechnic composition of aluminium powder and a metal oxide which produces an aluminothermic reaction known as a thermite reaction...
More: http://euwelding.com/post_1202071545.html
... Metals are capable of burning under the right conditions similar to the combustion process of wood or gasoline...
... The aluminium is oxidized by the oxide of another metal, most commonly iron oxide (rust)...
... Other metal oxides can be used, such as chromium oxide, to generate elementary metal... - Welding methods and welding history
Accordance to query: 2.41%
Fragments of message :
... Welding methods and welding history Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence...
More: http://euwelding.com/post_1200286728.html
... Until the end of the 19th century, the only welding process was forge welding , which blacksmiths had used for centuries to join metals by heating and pounding them...
... Following the wars, several modern welding techniques were developed, including manual methods like shielded metal arc welding , now one of the most popular welding methods , as well as semi-automatic and automatic processes such as gas metal arc welding , submerged arc welding , flux-cored arc welding and electroslag welding...