Research on testing method of resin sand high temperature compressive strength

作     者：Peng Wan Luan-cai Li Long Zhang Wen-qing Wang 

作者机构：State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science & Technology School of Metallurgical Engineering Anhui University of Technology 

出 版 物：《China Foundry》 (中国铸造（英文版）)

年 卷 期：2016年第13卷第5期

页      面：335-341页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China(No.51405002) 

主　　题：resin sand high temperature compressive strength hollow cylinder specimens variation coefficient 

摘      要：High temperature compressive strength is one of the most important performances of resin sand; its value directly concerns the quality of castings. In order to seek the best testing method of resin sand high temperature compressive strength, a self-developed instrument was used to carry out experiments, and the sample shape and size were designed and studied. The results show that a hollow cylinder sample can reflect the strength difference of different resin sands better than a solid cylinder sample, and its data is stable. The experiments selected φ20/5×30 mm as the size of the hollow cylinder samples. The high temperature compressive strengths of phenol-formaldehyde resin coated sand, furan resin self-setting sand, and TEA resin sand were each tested. For the resin sand used for cast steel and cast iron, 1,000 ℃ was selected as the test temperature; for the resin sand used for cast non-ferrous alloy, 800 ℃ was selected as the test temperature; and for all the resin sand samples, 1 min was selected as the holding time. This testing method can truthfully reflect the high temperature performance of three kinds of resin sand; it is reproducible, and the variation coefficients of test values are under 10%.