论文部分内容阅读
由于水玻璃砂在我国铸造工业中的广泛采用,呈现出原材料供应上的困难,某些车间从去年开始自制水玻璃,质量均能达到铸造生产的要求,而在成本上较市场售价低20~30%。
Due to the wide adoption of sodium silicate sand in China’s foundry industry, the difficulties in supplying raw materials appear. Some workshops made self-made water glass from last year, the quality of which can meet the requirements of foundry production but lower in cost than the market price. ~ 30%.