Making entity of the core theory, coated sand can produce almost all types, in particular precision casting core entity. When using the wet coated sand, direct access to the hot-box core making equipment and tooling, coated sand regeneration equipment manufacturers, without the need for original equipment and tooling to make any changes. When using dry coated sand, because of its good liquidity, coated sand production line, the need for exhaust mode core box, nozzle and seal the core box for special treatment. Available angle of repose Principle (coated sand repose angle of about 30o), coated sand into the sand shooting resolved exhaust chamber and did not shoot when shot at sand coated sand automatic whereabouts and other issues. Currently, the use of dry-coated sand hot box core technology manufacturers more coated sand regeneration and quality control as human beings continue to improve environmental protection requirements, coated sand recovery and regeneration becomes more and more important and urgent . The most commonly used method of mechanical recycling and renewable thermal regeneration. The basic principles of mechanical reproduction is the use of high-speed rotors wheels (approximately 3500r / min) and the slow rotation of the rotary frame gap between the (5-10mm) friction of the old sand, coated sand reclamation suppliers to achieve sand the surface to remove the resin and the purpose of shaping sand, dust generated through the ventilation and dust removal process (1) General Category coated sand made of quartz sand, thermoplastic phenolic resin, hexamine and calcium stearate composition, without additives concerned. For the production of cast iron in general. (2) high-strength low gas category is the ordinary coated sand coated sand replacement products, coated sand, by the addition of additives and use of new technology related to the preparation, the strength of coated sand higher than the average over 30% Gas evolution was significantly reduced, for the production of complex precision iron castings. Coated sand regeneration _ Qingdao Heng (certified) _ coated sand by Qingdao Heng Machinery Co. Qingdao Heng Machinery Co., Ltd. (www.thjidian.com) is in Qingdao, Shandong Cleaning equipment leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Qingdao Heng leadership with the staff warmly welcome all inquiries negotiations to create a better future Qingdao Heng.