论文部分内容阅读
水玻璃砂具有一定的优点,在国外铸造生产中占有相当的地位,在国内则是铸钢车间的主要用砂。为了克服水玻璃砂存在的某些缺点,近几年,各国的铸造工作者对水玻璃砂的吹气技术、硬化剂、溃散性、抗吸湿性和旧砂再生与回用等做了大量的试验研究工作。本文介绍了某些进步,并列举了美国一家工厂应用水玻璃砂代替树脂砂生产铁路车辆零件的例子。最后,对我国如何发展水玻璃砂提出几点意见。
Sodium silicate sand has certain advantages, in the foreign casting production occupies a considerable position in the country is the main cast steel plant sand. In order to overcome some shortcomings of sodium silicate sand, in recent years, foundry workers in various countries have made a large amount of infiltration techniques, hardeners, collapsibility, anti-hygroscopicity and regeneration and reuse of sodium silicate Experimental research work. This article describes some advances and cites the example of a factory in the United States that uses sodium silicate instead of resin sand to produce parts for rail vehicles. Finally, some suggestions on how to develop sodium silicate sand in our country.