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. Coated sand for nearly 10 years has greatly improved the performance of coated sand recycling plant, a corresponding increase in the number of new detection indicators: (1) high temperature compressive strength - simulate actual conditions of coated sand casting recyclers, test review membrane sand core compressive strength at the time of 1000-1500 ℃. (2) Heat time - tested coated sand core at high temperatures (700-1500 ℃) the intensity of ordinary coated sand regeneration, no distortion, no time to keep collapsing. (3) anti-Shelling - The testing of anti-coated sand shelling capacity. Coated sand regeneration and quality control as human beings continue to improve environmental protection requirements, coated sand recovery and regeneration becomes more and more important and urgent. The most commonly used method for mechanical recycling and renewable thermal regeneration. The basic principle is to use high-speed mechanical recycling back wheel wheel (about 3500r / min) and the gap between the slow rotation of the rotary frame (5-10mm) of the old sand friction to achieve the removal of resin and sand surface for the purpose of shaping sand, dust generated by processing through the ventilation dust coated sand coated sand recyclers regeneration _ _ Beijing, Qingdao Heng Heng Machinery Co., Ltd. is provided by 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!