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一、概述树脂自硬砂近年来开始用于造型和制芯,使用单位越来越多,迫切要求设计制造相应的混砂机。在这种情况下,济南铸锻机械研究所于一九七九年对“树脂自硬砂快速混合器结构参数”及“液体料定量输送系统”等进行了试验研究,在七九年试验的基础上,八○年设计了这台“S243型3吨树脂自硬砂混砂机”。八一年在重庆铸造机械厂制造出样机,八二年三月初开始出“重庆铸造机械厂”、“沪东造船厂”和“济南铸锻机械研究所”组成试验小组,在“沪东造船厂”对样机进行试验,经过一年的调试和生产考核,机器达到了控制方便、混砂均匀、容易清理和维修,能满足混砂工艺要求,并且
First, an overview Resin self-hardening sand in recent years began to shape and core, the use of more and more units, the urgent request for the design and manufacture of the corresponding sand mixer. Under this circumstance, Jinan Casting and Forging Machinery Research Institute carried out experimental research on “structural parameters of rapid hardening resin resin sand mixer” and “liquid material quantitative conveying system” in 1979. In 1979, Based on the design of this 80 years, “S243 3-ton resin sand hard sand mixer.” In August 1981, a prototype was manufactured at Chongqing Foundry Machinery Factory. At the beginning of March 1982, a test group of “Chongqing Foundry Machinery Factory”, “Hudong Shipyard” and “Jinan Casting and Forging Machinery Research Institute” Factory "on the prototype test, after one year of commissioning and production assessment, the machine reached a control convenient, uniform sand, easy to clean and repair, to meet the requirements of sand mixing process, and