同济大学学报（自然科学版）2017，Vol.45Issue(7)：1009-1015,7.DOI:10.11908/j.issn.0253-374x.2017.07.010
重载接触试验与机理分析
Mechanism Analysis of Overloading Contact Test
摘要
Abstract
Taking the roller system of the heavy equipment telescopic boom as the research object,the overloading contact tests of the rolller system and the supporting plate was conducted to investigate the wear mechanism of friction specimens,in order to improve the wear resistance and the life span of the mechanical parts.By using scanning metallography,SEM and EDS techniques,the surface morphologies,chemical composition and plastic deformation of the worn test specimens were analyzed.The results show that under heavy-duty conditions and with the increase of wear times,the wear mechanism of the supporting plate is both abrasive and adhesive.However,the wear of the roller is less serious than that of the supporting plate because of its higher hardness.The wear mechanism of the roller is both abrasive and mild adhesive.A study of the worn roller layer microstructure indicates that lamellar pearlite has dislocation movement and microstructure damage in the local area,which shows that the plastic deformation of the roller has happened under overloading contact.关键词
重载接触/托辊系统/磨损机理/表面形貌Key words
overloading contact/roller system/worn mechanism/surface morphology分类
机械制造引用本文复制引用
卞永明,梁敖,张泽宇,陈哲..重载接触试验与机理分析[J].同济大学学报（自然科学版）,2017,45(7):1009-1015,7.基金项目
国家自然科学基金(51575398) （51575398）
上海市自然科学基金(15ZR1442400) （15ZR1442400）
中央高校基本科研业务费专项资金 （）
