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Axle vacuum metallurgy melting

Axle is one of the important components that directly affect the safety of train operation. Its fracture will cause the train to derail. The axles of high-speed and heavy-duty rolling stock vehicles shall be guaranteed to have sufficient safety, reliability and long service life under the specified conditions of use. Axle steel should have good fatigue strength, so the metallurgy quality of the axle steel is very important. 

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To this end, foreign countries have begun to use steel ladle degassing, vacuum smelting and other refining methods to produce steel for axles, which greatly improves the fatigue strength and impact performance of refined steel. 

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