里氏硬度仪用于球墨铸铁件测试精度的分析

Study on Rie's Durometer Used for Ductile Iron Foundry Accuracy Test

介绍了球墨铸铁件采用里氏硬度测试方法和布氏硬度测试方法对比，并以试验回归分析法得出了二者的相关方程，证实了用里氏硬度测试方法经二次修正可以准确地反映球铁铸件的布氏硬度。

Introducing test hardness of ductile iron with Rie's and Brinell's durometers,by result contrast,experiment and regression analysis gains the relative equation which confirms that Rie's hardness,after second correction,can be accurately converted into Brinell's hardness.