Scientists at the Institute of Non-Ferrous Metals of Siberian Federal University (SFU) have developed a new technology for producing welding wire that provides a higher-strength welded joint for sheets of aluminum alloy with magnesium. This wire, as noted at SFU, is a kind of "metallic glue."
It is more resistant to factors that affect the destruction of the weld. This welding wire will simplify the production of structural products for the automotive industry, rocket engineering, shipbuilding, and aircraft construction.
The strength of the welding wire was achieved within the framework of the National Project "Science and Universities" due to two changes in its production technology. The first is the use of a combined casting-rolling-pressing unit in the production process, patented and developed by the institute's staff. It turned out to be significantly less expensive and yielded a greater output of usable metal.
The second is a change in the composition of the alloy from which the wire is made.
"A feature of the new Russian aluminum-magnesium alloy 1580 is the small addition of the rare-earth element scandium to its composition, which gives it special strength. Also, alloys of the aluminum-magnesium system have properties such as weldability and corrosion resistance, which distinguishes them from other aluminum alloys. Welding sheets from an alloy requires wire of the same chemical composition - this will achieve maximum reliability and strength when joining parts, which is especially important in the automotive industry, shipbuilding, rocket engineering, and the production of materials for aircraft of various purposes.
Scandium is one of the most expensive metals in the world. With the traditional method of manufacturing wire by pressing, up to 20% of the alloy would be wasted. However, the method of combined casting and rolling-pressing minimizes production losses.
Read related materials:
Новые материалы для российских двигателей, турбин и накопителей созданы в РТУ МИРЭА
Россия разрабатывает средства для управления высокоскоростной магнитной микроэлектроникой
