机电工程技术2025，Vol.54Issue(21)：54-60,7.DOI:10.3969/j.issn.1009-9492.2025.00042
42CrMo合金钢及QT400球墨铸铁镀锌摩擦因数试验研究
Tests and Study on the Friction Coefficient of Galvanized 42CrMo Alloy Steel and QT400 Ductile Cast Iron
摘要
Abstract
In wind turbines,hub and blades are typically bolted together.During blade rotation,frictional force drives the main shaft to generate electricity.Insufficient friction can cause relative sliding between components,exposing flange bolts to cyclic shear forces and potentially leading to failure.The anti-slip performance between the turbine hub and main shaft flange is investigated by measuring the friction coefficient of 42CrMo alloy steel and QT400 ductile cast iron.The materials are processed with Sa3-grade thermal zinc spraying,and are consistent with standard turbine materials.To simulate operational environments,tests are conducted under dry friction,lubricating oil application,oil immersion,and water immersion conditions.No significant difference in friction coefficient is observed between 42CrMo steel and QT400 iron under identical lubrication.The friction coefficient varies between 0.18～0.76 with changing surface conditions.Results indicate that the friction coefficient is primarily affected by the zinc layer condition and lubrication,with minimal impact from material properties.关键词
摩擦因数/试验/风电/锌层状态/润滑状态Key words
friction coefficient/testing/wind turbines/zinc coating condition/lubrication condition分类
金属材料引用本文复制引用
李凡,周正强,李达,陈晓东..42CrMo合金钢及QT400球墨铸铁镀锌摩擦因数试验研究[J].机电工程技术,2025,54(21):54-60,7.基金项目
国家自然科学基金项目(52101300) （52101300）
