Coated sand production line regeneration, Qingdao Heng (certified), Beijing coated sand regeneration

 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 recycling plant, ethanol volatilized to obtain coated sand; calorimetry preheating the sand to a certain temperature, adding the resin to melt, stirring the resin coated sand surface, adding an aqueous solution of hexamine and lubricants, cooling, crushing, and screening to give coated sand. For steel, cast iron coated sand common: their composition usually consists of quartz sand thermoplastic phenolic resin, methenamine and calcium stearate coated sand regeneration constitute offer, without concerning additives. The resin is usually relatively high amount at a certain strength requirements, do not have high temperature, low inflation, low gas and other characteristics suitable for some less demanding, simpler structure of cast iron production. High strength, low gas coated sand: on the basis of ordinary coated sand coated sand on renewable supply, through the preparation and adoption of new technology, so that the amount of resin dropped significantly, significantly reduce gas evolution join related properties "additive" and can delay hair air speed. The coated sand with high strength, low inflation, low gas, gas and other characteristics of slow hair, especially for iron castings, steel castings in small and medium volume requirements for low-fat sand core, such as the body, such as sand cores coated sand regeneration production line, Qingdao Heng (certified), Beijing coated sand regeneration provided by Heng Machinery Co., Ltd. Qingdao. 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.