Coated sand (coated sand). I.e. before molding sand surface covered with a layer of solid resin film molding sand or core sand. There are two methods of cold and hot coating process: Cold method using the resin is dissolved in ethanol and added methenamine coated sand regeneration process in the sand, so that the two surfaces coated sand coated sand production line regeneration, Coated Sand manufacturer volatile renewable ethanol, was coated sand; thermal preheating the sand to a certain temperature, plus resin melted, stir in the resin-coated sand surface coated sand recycling equipment manufacturers, plus methenamine solution and lubricants, cooling, crushing, screening was coated sand. For steel, cast iron coated sand mainly uses high-quality selection of natural quartz sand as raw sand, thermoplastic phenolic resin, methenamine and enhancer for raw materials. Depending on the technology needs of users, the curing speed, stripping, mobility, collapsibility, the casting surface finish, storage and other aspects of appropriate adjustments to match. Is one of the cars, tractors, hydraulic parts and other materials the best shape. Coated sand recycling equipment company, Dongying coated sand regeneration, provided by Qingdao Heng Heng Machinery Co., Ltd. Qingdao. Qingdao Heng Machinery Co., Ltd. (www.thjidian.com) strong, credible, Shandong Qingdao Cleaning equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Qingdao Heng and you hand into the brilliant, for a better future!