From Metal Filtration to Environmental Solutions, Innovations Continue to Expand Applications

In casting production, casting waste caused by casting defects such as non-metallic inclusions reduces the profits of casting companies. Especially in the past two years, with the increase in the price of cast pig iron and the maturity of synthetic casting technology, foundries have widely used scrap steel and scrap iron as smelting furnace materials to reduce costs. Although the return charge can reduce costs, the return charge has not been fully sanded and shot blasted, and its sand content is too high, resulting in a large amount of difficult-to-clean slag during the smelting process. At the same time, the source of scrap steel is complex and is often mixed with non-metallic inclusions, which further increases the inclusions and slag in the molten iron, thereby causing defects such as slag inclusions, pores, and slag holes, which seriously affect the quality of castings. So, how to solve this kind of problem? The use of filters can effectively reduce or eliminate various non-metallic inclusions and purify liquid casting alloys.