Coated sand will be seized Index 1992 amended the provisions of coated sand industry standards are: room temperature flexural strength, hot bending strength, loss on ignition, particle size, and the melting point. Optional detection indicators are: room temperature tensile strength, tensile strength hot hair volume and liquidity. Performance coated sand for nearly 10 years has been greatly improved coated sand regeneration, a corresponding increase in the number of new detection indicators: (1) high temperature compressive strength - simulate actual conditions of casting, test coated sand core in 1000- compressive strength of 1500 ℃ when. (2) Heat time - tested coated sand core at high temperatures (700-1500 ℃) to maintain strength, no distortion, no collapsing of time. (3) anti-Shelling - The testing of anti-coated sand shelling capacity. Century has come, this is a modern high-tech rapid development and product quality, environmental protection era of fierce competition. People for the requirements of their own living environment increasingly high, companies should follow the requirements of environmental laws to organize production. Foundry industry is the machinery industry pollution, energy consumption, and poor working conditions in the industry. 21st century styling, core technical progress key issues should be the development of non-polluting, less pollution, low production cost, energy-saving materials and labor conditions are good modeling, core processes. Therefore, coated sand technology in the future direction of development should be: (1) reduction of environmental pollution coated sand, the development of low free phenol, low gas, less pollution phenolic resin, protecting the natural environment for human survival. (2) study of phenolic resin substitutes. Because phenolic resins are expensive to develop a new type of cheap binder is a priority. (3) further research and improvement of rheological phenolic resin, and constantly improve the reaction resin coating and curing properties. (4) study the performance of resin synthesis process control, resin macromolecules and small molecules are also suitable for further study graded coated sand recycling company, in order to improve the strength and toughness and resistance to shelling resin. (5) further study the reuse of the old sand. With the increasing amount of coated sand, many manufacturers have reached several thousand tons more than the amount of research coated sand sand reclamation and reuse old already has great practical significance coated sand renewable suppliers, which can not only improve Cover Sand film performance, but also to save costs, reduce environmental pollution of waste materials in the production of coated sand areas should be strengthened following two aspects: (1) made of coated sand pollution, mainly from the following aspects: ① lower the amount of resin and curing temperature; ② coated sand to improve the overall performance, especially in high temperature performance; ③ strengthen research and pollution-free phenolic resin alternatives;. (2) increase the regenerative capacity of coated sand coated sand coated sand production equipment package recycling has been a subject of concern to the majority of experts coated sand regeneration factory, now coated sand regeneration equipment is expensive and regeneration efficiency is not high, production efficiency 5 tons / hour thermal regeneration equipment prices in 1200-1600 yuan, coated sand regeneration cost 65-90 yuan / ton, this cost can not be covered for domestic foundry sand reclamation enterprises manufacturers | Cover membrane sand reclamation | provided by Qingdao Qingdao Heng Heng Machinery Co. 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!