Fusion,metal,welding,Welding,f technology Fusion metal welding
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Welding is a fabrication method to get indestructible joinof separate materials. There are many and very different welding processes and methods. Fusion welding is widely applied in industry,agriculture, construction and other areas. In addition to arc welding, alsoapply to contact, gas, pressure, thermal, inductive, laser welding and othermethods.The greatest impact on welding has metal chemical composition. Carbon steel thatcontains up to 0.35% carbon is welded well by all means. If steel has up to1.0-1.5% silicon or manganese, welding is not compromised, but the growing shareof these impurities makes welding increasingly difficult.Electric arc metal welding When welding with electric arc, metal edges are melted by anelectric arc. Aid seam forms a meltedmetal. In order to create the arc, it is necessary to ionize the gas. To this purpose,the metal electrode is touched to metal. The short circuit starts when metalcontact spot heats up, begins to emit electrons, which are ionizing close tothe air, and away from the metal electrode arc occurs. Electric Arc - along-lasting electric-discharge in gas environment. The arc voltage depends onthe arc length and the spray density. Welding manually spray density is small,welding arc length is 2-6 mm and the required voltage is 10-20 volts. For fusionwelding most commonly used fusible welding electrodes, consisting of metalbars, coating improve arc stability and metal to protect the environment, theatmosphere effect. Electrode in a molten metal entrained drops. Arc melted electrode metal in the form of small dropletsmoving in the welding metal crater, the process continually repeats itself, theproposed results. Using the filament electrode the arc is burning between themetal edges of the electrode is fed with added wire, which melts at thetemperature and shape seam.Droplet size depends on the strength of the spray. At thesame electrode diameters, growing current, a drop in its decline, and growingtension - increasing to it. Better proposed to come when a small drop. Thereforein order to obtain good welding seam must boil a short arc, low arc voltage andcurrent selection of thedrops are small.To produce welding electrodes witch are used to fill thewelding grove, which produces in accordance with the relevant standards. WireMark - a metallic chemical composition, which is approximately equivalent towelded metal brand. Welding is used more refined metal from harmful impurities (sulfur,phosphorus), and has increased impurity content. Wire is produced 0,3-12 mm. Wiremust be clean, it is considered dry, delivered in rolls (roll one piece). Themost common fusible electrodes. Produced and unaccompanied electrodes fromtungsten, graphite, carbon.Welding as a specific technological process used inmany industries - energy, construction and other fields. In this article I amgoing to overview general welding process. For more relevant info please checkother my articles
Fusion,metal,welding,Welding,f