Weld and Braze
Steel in Sandton
www.weldnbraze.com
Address
58 Hobart rd. Bryanston. Sandton. Gauteng. 2021What you should know about Weld and Braze
Weld and Brtaze is importer and distributor of superior TELWIN/Italy/ welding range of products and official agent of Forster welding systems/Germany/.
Spot Welding Machines for all applications, Plasma cutters, Spot Welding machines for DIY and industrial use, inverter welders, TIG ac/dc, MIG-MAG, variety of spotters on single or three phase for all applications.
METAL TYPE: The metals that steelworkers work with are divided into two general classifications: ferrous and nonferrous. Ferrous metals are those composed primarily of iron and iron alloys. Nonferrous metals are those composed primarily of some element or elements other than iron. FERROUS METALS Ferrous metals include all forms of iron and steel alloys. Normally, ferrous metals are magnetic and nonferrous metals are nonmagnetic. Iron is produced by reducing iron ore to pig iron through the use of a blast furnace. From pig iron many other types of iron and steel are produced by the addition or deletion of carbon and alloys. Almost pure iron, the presence of slag enables wrought iron to resist corrosion and oxidation. NON FERROUS METALS Aluminum Pure aluminum is a silvery-white metal with many desirable characteristics. Pure aluminum is soft and lacks strength, but alloys with small amounts of copper, magnesium, silicon, manganese, and other elements have very useful properties. Magnesium has good fatigue resistance and performs particularly well in applications involving a large number of cycles at relatively low stress. Nickel Nickel fits many applications that require specific corrosion resistance or elevated temperature strength. When compared to steel, other nickel alloys have ultrahigh strength, high proportional limits, and high moduli of elasticity. Commercially pure nickel has good electrical, magnetic, and magneto-restrictive properties. Silver is a very malleable, ductile, and corrosion resistant metal that has the highest thermal and electrical conductivity of all metals and is the least costly of all the precious metals. The most extensively used of these metals are tungsten, tantalum, molybdenum, and columbium (niobium). The metal is nontoxic, solderable, and has a high boiling point. Upon severe deformation, tin and tin-rich alloys work soften. Principal uses for tin are as a constituent of solder and as a coating for steel (tinplate, or terneplate). They have low to medium strength, good notch toughness, reasonably good ductility and possess excellent mechanical properties at cryogenic temperatures. The more highly alloyed alpha and near-alpha alloys offer optimum high temperature creep strength and oxidation resistance as well. Their hot-forming qualities are good, but the high temperature creep strength is not as good as in most alpha alloys. Beta or near-beta alloys are readily heat treatable, generally weldable, capable of high strengths and good creep resistance to intermediate temperatures. Beta-type alloys have good combinations of properties in sheet, heavy sections, fasteners and spring applications.
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