In the coated sand production areas should be strengthened following two aspects: (1) hair coated sand pollution, mainly from the following aspects: ① to reduce the amount of resin and curing temperature; ② coated sand to improve the overall performance, especially ③ strengthen pollution research phenolic resin substitutes; high temperature performance;. (2) increase the regenerative capacity of coated sand coated sand coated sand production equipment package recycling has been a topic of concern for the majority of experts, the current coated sand regeneration equipment is expensive and regeneration efficiency is not high, productivity is 5 tons / hour The thermal regeneration equipment prices in the 1200-1600 yuan, coated sand regeneration cost 65-90 yuan / ton clay sand reclamation, this cost can not be produced for the domestic foundry business entity core theory, cover film can produce almost all types of sand, especially core entity precision castings. When using the wet coated sand, direct access to hot-box core making equipment and tooling without the original equipment and tooling to make any changes. Clay sand reclamation factory coated sand when dry state, because of its mobility, the need to exhaust the way the core box, the nozzle and the core box seals for special treatment. Angle of repose principle can be used (coated sand repose angle of about 30o) Qingdao clay sand reclamation resolve when coated sand into the sand after shooting shot exhaust chamber and not shoot automatic sand coated sand whereabouts and other issues. Currently, the use of dry heat coated sand box core technology manufacturers are more 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, just after pouring 24 hours after casting cooling Shandong clay sand reclamation 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 are different, can be processed into different performance centrifugal casting coated sand. Differs from other types of coated sand is sand that covered some high density, low-fat and fat gas gas slow clay sand reclamation Shandong, Qingdao Heng (certified), clay sand reclamation from Qingdao Heng Machinery Limited. 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.