【摘要】 采用涂料是降低铸钢件用砂成本,防止铸件表面粘砂和提高铸件表面质量的最好方法.本文作者通过试验研究,用价格便宜的铝钒土粉和石英粉做耐火骨料,水玻璃做粘结剂,并加入一种能促进在铸件与涂料接触界面形成≥0.1mm 的氧化铁累积层和10%以上玻璃体烧结层的辅助剂,制得三种防粘砂性能良好的水基铸钢涂料.现场试验证明,该涂料的工艺性良好,对普通碳钢具有令人满意的抗粘砂效果.更多还原

【Abstract】 In order to reduce the costs of the sand used in cast steel,prevent the sand from adhering to the surface of steel casting and improve the surface quality,the best way is to use coating.In this paper,we depended on the point of view that if the accummulative layer of ferric-oxide formed on the interface of contact between casting and mould is not less than 0.1mm in thickness,or the amount of vitreous body which is formed in the sintered layer on the in- terface of contact is over 10 per cent,the sintered layer will peel off automati- cally the surface of casting when the layer is cooled.The cheap Alumina and Quartz powder were used as refactory aggregate,and water glass as binder, a kind of auxiliary agent was adapted which would promote to form the ac- cummulative layer of ferric-oxide more than 0.1mm and the sintered layer of vitreous body more than 10 per cent.Based on a lot of tests,we obtained kinds of water base coatings for cast steely and these coatings can keep it from adhering to casting surface and have excellent technology characte- ristics.Through practical experiments,the coatings are proved to have satis- factory anti-sandsticking property for ordinary carlon steel.The costs are low.更多还原