Coated sand coated sand production method, mixed anatomy experienced dry mix, cold coating method, temperature coating, thermal coating method four stages, the current production of coated sand almost all thermal laminating method. Thermal coating process is the first raw sand heated to a certain temperature, and the resin respectively, Wuluo removal of aqueous solution and calcium stearate were mixed and stirred, cooled from crushing and screening. Due to differences in formulation, blending process is different. At present, domestic species, many coated sand coated sand production line recycling equipment company, hand feeding of semi-automatic production lines, about 2000 to 2300, the computer-controlled automatic production line also has nearly 50, to effectively improve production efficiency and product stability . Country in the 1950s began to study the application of coated sand and shell (core) processes, until the mid-1980s, only a few plants using homemade shell core for the production of coated sand. Since then, the coated sand began as a commodity on the market. With the continuous improvement of raw materials, manufacturing equipment and manufacturing processes, coated sand quality is improving, declining production costs, since the 1990s, the application of coated sand has been more rapid development of renewable manufacturers of coated sand, growing product categories and have been formed. Currently coated sand recycling equipment, our annual production of coated sand casting has reached 50 million tons, a total of hundreds of professional manufacturers. With the rapid development of China's automobile industry and mechanical products export needs coated sand regeneration, and the development of international markets casting, casting increasingly demanding high-quality, coated sand applications will be covered in a short period of rapid growth membrane sand reclamation plant, Qingdao Heng (certified), Chongqing 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.