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一、前言气流紧实是近十年来新出现的型砂紧实方法。它具有速度快,噪音小。紧实度分布均匀,砂型表面硬度高,装置结构简单等优点,所以近几年得到迅速的发展。目前,苏联已有十几条高压气流紧实的造型生产线,日本应用静压造型法,已有系列的静压造型机产品,瑞士的乔治、菲雪公司利用天然气爆炸的冲击造型机,从81年以来已向市场供货,西德的BMD公司也正在出售高压的气流紧实造型机,对气流紧实的造型方法和有关紧实机理的研究正方兴未艾。
First, the preface Air tightness is the emerging sand compact method in the recent ten years. It has fast, low noise. The distribution of solidity is even, sand surface hardness is high, and the structure of the device is simple. Therefore, rapid development has been achieved in recent years. At present, the Soviet Union has more than a dozen high-pressure airflow tight molding production line, the Japanese application of static pressure modeling method, a series of static pressure molding machine products, Switzerland’s George, Philippine snow blasting machine using natural gas explosion machine, from 81 The market has been available for many years and West Germany’s BMD is also selling high-pressure air-tight molding machines. Research into tight-flow modeling methods and compaction mechanisms is in the ascendant.