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铸造用的涂料一般都先配制成膏状再稀释使用。配制膏状涂料需经一定时间的混碾,混碾的作用在于使耐火基料的固体粒子在混碾中不断产生新生表面,提高其吸附能力、润湿性等从而改善涂料的性能。目前混碾时间的长短各厂不一,有的为两小时,有的为8～16小时,有的甚至长达24小时,究竟混碾多长时间涂料的性能最好、最经济合理,没有
Foundry coatings are generally formulated into a paste and then diluted to use. Preparation of paste-like paint to be mixed with a certain period of time, the role of milling is to make the refractory base solid particles in the milling continue to produce a new surface, improve its adsorption capacity, wettability and thus improve the performance of the coating. At present, the length of milling time varies from factory to factory, some for two hours, some for eight to sixteen hours, and some for up to twenty-four hours. How long is the performance of the coating the best, the most economical and reasonable?