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冷芯盒制芯工艺是1968年开始发展起来的一种制芯工艺,七十年代以来,在美国和欧洲的铸造行业中逐步得到广泛的应用。近年来,我国已有一些单位试验这种工艺,并引进了树脂和有关的工艺设备,处于发展之中。这种工艺和SO_2冷芯盒工艺、热芯盒工艺相比,有它的特点。现结合其工艺要求,试谈工厂设计中的几个问题,以供讨论。一、冷芯盒工艺的特殊要求三乙胺冷芯盒工艺是将作为粘结剂的酚醛树脂、多异氰酸脂和砂混合后,射入芯盒,通入三乙胺使之迅速硬化的制芯工艺。这种工艺在生产中有以下一些特殊要求。 1.对原材料要求严格。根据资料介绍,要求原砂呈圆形,颗粒度50(?)60或40(?)90。含泥量(?)0.3％,含水量(?)0.25％,碱性化合物含量(?)0.5％,氧化物含量(?)0.3％。 2.在各重要工艺环节上要控制温度。采用冷芯盒工艺时各个工艺环节的温度控制是一个重要问
Cold-core box core making process is a kind of core-making process that began to develop in 1968. Since the 1970s, it has been widely used in the foundry industry in the United States and Europe. In recent years, some units in our country have experimented with this kind of technology, and introduced resins and related process equipment, which are under development. Compared with SO2 cold box process and hot box process, this process has its own characteristics. Now combined with its technical requirements, to talk about several issues in the factory design for discussion. First, the special requirements of cold-box process Triethylamine cold-box process is as a binder of phenolic resin, polyisocyanate and sand mixed, injected into the core box, the rapid introduction of triethylamine to make it harden The core making process. This process has some special requirements in the production. 1. strict requirements on raw materials. According to the introduction of the data, it is required that the original sand be round in shape with a particle size of 50 (?) 60 or 40 (?) 90. 0.3% of mud content (?), 0.25% of water content (?), 0.5% of basic compound (?), And 0.3% of oxide (? 2 in all important aspects of the process to control the temperature. The use of cold-box process when the various aspects of the temperature control process is an important question