Improvement of composite properties of aluminum conductor
Improvement of composite properties of aluminum conductor by rare earths
Rare Earth aluminum Conductor is a kind of method which is found by scientists in China to effectively improve the conductivity of aluminum. Rare earth element is a good purifying agent and modifier for nonferrous metals such as aluminum, magnesium, zinc and copper, in the smelting process, the addition of rare earths can play a role in eliminating harmful impurities, refining grains and alloying, whether casting aluminum alloy or processing aluminum alloy, the addition of rare earths has played a role in improving performance.
Adding rare earth to aluminum conductor can obviously improve the comprehensive performance of wire and cable. Silicon is the main impurities affecting the electric wire, and China's electrolytic aluminum contains a high silicon content, so that China's previous production of aluminum conductor conductivity often does not reach the International Electrotechnical Commission standards, has become a long-standing problem for China's aluminum wire industry.
The smelting of aluminum by Rare-earth treatment can precipitate the silicide in the molten aluminum from the grain boundary, overcome the harmful effect of silicon, and improve the conductive performance obviously. At the same time, rare earth can refine grain, improve the mechanical properties and processing performance of wire and cable.
China's production of rare earth aluminum alloy wire and cable, not only conductive performance slightly higher than the International Electrotechnical Commission standards, and more than ordinary aluminum wire strength increased by 20%, corrosion resistance increased by one times.