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以水玻璃作为粘结剂的水玻璃型(芯)砂(简称水玻璃砂),目前,已在国内外铸钢件的大批量生产中普遍采用。水玻璃砂在原砂准备、铸件的清理、旧砂的再生处理,型砂的混制等工艺方面,具有区别于湿型粘土砂的特殊性。本文介绍我车间已建成并投产使用的水玻璃砂的综合处理机械化流水线的工艺流程及有关设备简况,以供年产万吨铸钢件,每年处理4～5万吨水玻璃砂及其旧砂的车间,在建造相应的机械化流水线时作为一种借鉴。
Water glass as a binder water glass type (core) sand (referred to as sodium silicate), at present, has been widely used in mass production of steel castings at home and abroad. Sodium silicate sand in the original sand preparation, casting cleaning, recycling of old sand, sand and other mixed process, with different from the wet-type clay sand particularity. This article introduces the process flow and related equipment of mechanized assembly line of sodium silicate sand that has been built and put into production in our workshop for annual output of 10,000 tons of steel castings and annual processing of 4-50,000 tons of sodium silicate sand and its old sand The workshop, in the construction of the corresponding mechanized assembly line as a reference.