China's coated sand technology began in the mid-1950s, the 1960s was once disabled. In the 1980s, due to the rapid development of automobile industry and the need for mechanical product exports, the quality of castings made a higher demand, thus contributing to the rapid development of coated sand production and application of technology [1]. 1986 Institute of Jinan Casting Forging technology first developed a new type of coated sand production technology, the amount of resin fell from 6 to 10 percent in the early 1980s to 3-4%, close to the international advanced level in the same period. The rapid development of the early 1990s coated sand plant them all over the country, new products, new technologies are emerging, renewable coated sand into the 21st century, annual sales of coated sand industry has reached more than 900,000 tons of coated sand recycling machine manufacturers, widely used in automotive cylinder block, cylinder head, intake manifold, various types of pipe fittings, pump and other complex castings. Easy collapsibility coated sand: it is for non-ferrous metals (especially aluminum) is not easy to sand casting and developed a coated sand. The sand also has good strength has excellent low temperature collapsibility. With its production of non-ferrous metals (aluminum, copper alloys, etc.) castings, no need to re-heating the casting sand coated sand reclamation plant, just after pouring the casting to cool for 24 hours, you can SHAKERS. Centrifugal Casting coated sand: the coated sand suitable for centrifugal casting process, it can be used to replace the production of centrifugal casting and other coating materials based on iron pipe diameter size and technical requirements of different coated sand recycling machine manufacturers, can be processed into different performance centrifugal coated sand casting. Differs from other types of coated sand is sand that covered some high density, low-fat and fat gas gas slow regeneration and quality control of coated sand 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 for mechanical recycling and renewable thermal regeneration. The basic principle is to use high-speed mechanical recycling back wheel wheel (about 3500r / min) and the gap between the slow rotation of the rotary frame (5-10mm) of the old sand friction to achieve the removal of resin and sand surface for the purpose of shaping sand and dust generated by the processing of coated sand recycling machine manufacturers through ventilation and dust, Qingdao Heng (certified), coated sand regeneration provided by Heng Machinery Co., Ltd. Qingdao. Qingdao Heng Machinery Co., Ltd. (www.thjidian.com) is Qingdao, cleaning, 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 led the staff warmly welcome all inquiries negotiations to create a better future Qingdao Heng.