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目前,在铸钢件的生产中,应用较广的仍是普通石英粉为骨料的涂料。但是,传统的普通石英粉涂料缺点较多,主要有:1.涂层强度低,易开裂、剥落;2.悬浮稳定性不好,容易沉淀;3.耐火度低,清砂困难,特别在厚壁复杂铸钢件上易粘砂,致使铸件表面粗糙。1985年,我厂开展了对新型水基特制石英粉涂料的试验研究工作,经大量生产应用,效果很好,现简介如下。一、新涂料的使用性能好新涂料的悬浮性能好。本系列涂料中使用的粘结剂和悬浮稳定剂有:1.钠基膨润土。应注意用量,用量过多,将导致涂层开裂,反之,悬浮性能差。
At present, in the production of steel castings, the wider application is still ordinary quartz powder aggregate paint. However, the traditional common quartz powder coating has many disadvantages, mainly including: 1. The coating has low strength and is easy to crack and peel off; 2. The suspension stability is poor and the precipitate is easy; 3. The low refractoriness and sand cleaning are difficult, Thick-walled complex castings easily sticky sand, resulting in rough castings. In 1985, our factory carried out a pilot study on a new type of water-based special quartz powder coating. After mass production and application, the effect is very good. The brief introduction is as follows. First, the use of new coatings Good performance of the new paint suspension. This series of paints used in the binder and suspension stabilizer are: 1. Sodium bentonite. Should pay attention to dosage, excessive dosage, will lead to crack coating, on the contrary, poor suspension performance.