理化检验-物理分册2024，Vol.60Issue(6)：46-50,5.DOI:10.11973/lhjy-wl230117
铸造风电主轴锁定孔开裂原因
Causes of locking hole cracking of cast wind power spindle locking hole
摘要
Abstract
The locking hole of a QT500-14 casting spindle cracked after cutting.The reasons for the cracking of the locking hole were analyzed by means of macroscopic observation,chemical composition analysis,scanning electron microscope analysis,metallographic examination and mechanical property test.The results show that there was an obvious graphite dense distribution area near the cutting surface.Under the action of organizational stress and thermal stress introduced during the cutting process,micro-cracks were generated in this area.The cracks continued to extend under the action of residual stress,which eventually led to the cracking of the spindle locking hole.关键词
风电主轴锁定孔/切割裂纹/应力集中/石墨/残余应力/开裂Key words
wind power spindle locking hole/gas cutting crack/stress concentration/graphite/residual stress/cracking分类
矿业与冶金引用本文复制引用
张振,刘哲,刘珑,杨开彬..铸造风电主轴锁定孔开裂原因[J].理化检验-物理分册,2024,60(6):46-50,5.基金项目
国家自然科学基金项目(12075127) （12075127）
