牙轮钻头轴承RB润滑脂流变性研究

Investigation on the Rheological Property of Rock-bit Bearing Grease

在不同温度和不同剪切速率条件下,对牙轮钻头专用润滑脂的高温流变性进行了实验研究,通过对实验数据的分析处理,得到了牙轮钻头专用润滑脂的名义粘度随温度和剪切速率的变化规律,并找到了该润滑脂适用的最佳工况温度和剪切速率。结果表明,该润滑脂的流变性质表现为典型的B inham流体,适用于高温、高剪切率下的工况。

High temperature rheological analysis for rock-bit grease was studied in different temperature and shearing rate, and the rock-bit grease＇s rheological parameter was measured. Results indicate that the roller-bit grease is a typical Binham liquid, and it can work under the condition of high temperature and high shearing rate.