Wholesale coated sand, coated sand, Qingdao Heng

In the coated sand production areas should be strengthened following two aspects: (1) made of coated sand pollution, mainly from the following aspects: ① reduce the amount of resin and curing temperature; ② coated sand to improve the overall performance of coated sand especially high temperature performance; study pollution of phenolic resin substitutes ③ strengthened;. (2) enhance the regenerative capacity in coated sand coated sand production areas should be strengthened following two aspects: (1) made pollution-coated sand coated sand prices, mainly from the following aspects: ① reduce the amount of resin and curing temperature; ② coated sand to improve the overall performance of coated sand mold, especially high-temperature performance; research non-polluting alternatives to phenolic resin ③ strengthened;. (2) increasing the regenerative capacity of coated sand coated sand coated sand production equipment package recycling the majority of experts has been a subject of concern, 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 1200-1600 yuan, regeneration coated sand cost 65-90 yuan / ton, so the cost can not be for domestic enterprises coated sand casting by Dr. German Keluo Ning in two During World War II invention, the process is a powdery thermosetting phenol resin sand mechanically mixed with the original, when heat cured. Later developed into a thermoplastic phenolic resin plus latent curing agent (methenamine) and lubricants through a certain coating process formulated as coated sand, resin coated sand the surface of the molten resin-coated sand coating when heated sand, coated sand products at 乌洛托 decomposition of methylene role, the molten resin rapidly changed from a linear structure into the body structure is not melted, so that the coated sand curing. Wholesale coated sand, coated sand, provided by Qingdao Qingdao Heng Heng Machinery Co. Qingdao Heng Machinery Co., Ltd. (www.thjidian.com) strong, credible, in Qingdao, Shandong 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!