铸铁质量综合参数快速测定仪的研制

Development of Compound Parameters Fast Testing Instrument for Quality of Cast Iron

普通灰铸铁的化学分析和机械性能检验,以及球墨铸铁球化率的测定,是控制铸铁质量的重要手段.热分析法的研究和应用,为铸造的质量检验开辟了新的途径.采用微电脑的铸铁质量综合参数快速测定仪,可对普通灰铸铁的化学成分、机械性能,球墨铸铁的球化率等进行炉前快速分析.从浇注试样开始,3分钟内输出全部测试结果.化学成分包括 C%,Si%,CE%;机械性能包括抗拉强度δ_b(Rm),硬度 HB,晶粒度 Neu;球化率包括球化级别和孕育效果等项参数.本文论述了热分析法的基本原理及热分析技术的国内外研究应用现状;分析了微机化铸铁质量综合参数快速测定仪的硬件和软件系统;给出了仪器在实验室和铸造现场的测试结果.

The chemical analysis and physical tests for ordinary gray cast iron and the nodularity determination for nodular cast iron are important means to control the quality of cast iron.The study and use of thermal analysis opened a new channel to test and control the quality of cast iron.Microcomputer compound parameters fast testing instrument may be used to test chemical composition,mechanical features,nodularity of cast iron within only 3 minu- tes.Analysis results printed by the testing instrument includes:T_H.T_L.T_S, T_U,T_R,△T,C%,Si%,CE%,δ_b,HB,Neu,Nodularity,etc.This paper centers around the fundamentals of thermal analysis used in evaluating the quality of cast iron,the present condition of studying and using it at home and abroad;the hardware and software design of the instrument;the results tested with the instrument in the laboratory and the casting factory.