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, a corresponding increase in the detection of some new indicators: (1) high temperature compressive strength - simulate actual conditions of casting, coated sand core testing at the time of 1000-1500 ℃ compressive strength. (2) Heat time - tested coated sand core at high temperatures (700-1500 ℃) strength coated sand regeneration factory, no distortion, no time to keep collapsing. (3) anti-Shelling - The testing of anti-coated sand shelling capacity. Coated sand recycling the majority of experts has been a topic of concern, the current coated sand regeneration equipment is expensive and regeneration efficiency is not high, productivity is 5 tons / hour of thermal regeneration equipment prices in the 1200-1600 ten thousand yuan coated sand renewable manufacturers, recycled coated sand will cost 65-90 yuan / ton, so the cost can not be cast for domestic enterprises generally accepted. So the development of economic and efficient coated sand recycling equipment has a broad market prospect 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. After using it non-ferrous metal production (aluminum, copper alloys, etc.) coated sand casting regeneration, does not require re-heating the casting sand coated sand recycling machinery, just after pouring the casting to cool for 24 hours, then the vibration off sand. 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 volume of gas slowly regenerate coated sand production lines, coated sand regeneration, Qingdao, Qingdao Heng Heng Machinery Limited. 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!