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一、前言粘土是用于造型的主要原料之一,大约每生产一吨合格铸件,需消耗150公斤左右的粘土。粘土的好坏直接影响着铸件的质量和成本。一般而言,与造型材料直接或间接有关的铸件缺陷,约占铸件废品的35～60％。耐火度是粘土重要的高温性能之一。因此,在没有测试手段的条件下,如何比较精确地计算出耐火度具有重要意义。我们做了这方面的研究工作,从中总结出粘土耐火度的经验公式。
First, the foreword Clay is one of the main raw materials for modeling, about one kilogram of qualified castings, about 150 kilograms of clay to be consumed. The quality of clay directly affects the quality and cost of the castings. In general, casting defects, which are directly or indirectly related to the molding material, account for about 35-60% of the cast scrap. Refractoriness is one of the important high temperature properties of clay. Therefore, in the absence of test means under the conditions of how to calculate the refractometer more important. We have done research work in this area, from which we sum up the empirical formula of clay refractory.