铸造2024，Vol.73Issue(7)：975-981,7.
基于热分析技术的球墨铸铁球化率和收缩特性预测
Spheroidization Rate and Shrinkage Characteristics Prediction of Ductile Cast Iron Based on Thermal Analysis Technology
摘要
Abstract
In order to solve the problem of high rejection rate caused by casting defects such as shrinkage cavity,porosity and poor spheroidization and so on in the production of ductile cast iron,a study on the spheroidization rate and shrinkage characteristics prediction of ductile cast iron based on thermal analysis technology was carried out.Using a specific thermal analysis sample cup for molten iron sampling analysis,after pouring the target component molten iron,a multi-channel temperature acquisition system was applied to record the solidification temperature curve of the sample,and the characteristic temperatures of liquidus temperature TL,eutectic minimum temperature TEU and eutectic maximum temperature TER were calculated.Using these characteristic values as variables,the mathematical models for predicting shrinkage rate and spheroidization rate have been established through multiple linear regression method.After on-site experimental testing,the average prediction errors of the models for the shrinkage rate and spheroidization rate do not exceed 1％and 2％,respectively.关键词
热分析/球墨铸铁/收缩倾向/球化效果/回归分析Key words
thermal analysis/ductile cast iron/shrinkage tendency/spheroidization effect/regression analysis分类
矿业与冶金引用本文复制引用
白宇轩,叶寒,顾嘉,杨明浩,李仕林,朱福生..基于热分析技术的球墨铸铁球化率和收缩特性预测[J].铸造,2024,73(7):975-981,7.基金项目
蠕墨铸铁铁水热分析关键技术开发与应用(HX202105210001). （HX202105210001）
