Low Carbon Ferrochrome Alloys

In the smelting field of high-end automotive gear steel and bearing steel, the ultimate performance comparison of materials actually lies in the ultimate control of micro impurities and harmful elements. Although traditional Si75 # silicon iron is widely used as a basic additive, its high aluminum content (usually around 1.5%) has always been an important bottleneck restricting the fatigue life of steel. These aluminum elements form brittle inclusions such as alumina and calcium aluminate in molten steel, which are difficult to deform and eliminate during subsequent rolling and heat treatment, becoming the starting point of stress fatigue and seriously threatening the reliability of components under long-term high-speed operation.Faced with common challenges in this industry, the use of low aluminum Si75 # silicon iron balls processed by vacuum pressure refining technology has become a key process path to break the performance ceiling. This technology effectively separates and reduces…