铸造技术2018，Vol.39Issue(2)：465-468,4.DOI:10.16410/j.issn1000-8365.2018.02.050
40Cr液压轴承断裂失效分析研究
Fracture Failure Analysis of 40Cr Hydraulic Bearing
王鑫 1王璐 2邢珂3
作者信息
- 1. 内蒙古化工职业学院测控与机电工程系,内蒙古呼和浩特010010
- 2. 内蒙古机电职业技术学院机电系,内蒙古呼和浩特010010
- 3. 内蒙古机电职业技术学院冶金系,内蒙古呼和浩特010010
- 折叠
摘要
Abstract
The reason of the 40Cr hydraulic bearing faults were investigated by optical microscope,scanning electron microscope and energy spectrum method to the fault of hydraulic bearing such as chemical composition analysis,fracture morphology observation and metallographic structure.The results show that the chemical composition of the hydraulic bearing conforms to the enterprise standard,but the microstructure is not uniform,the crack source area and at 1/2 radius are fine pearlite and block or semi-reticular ferrite,the coating thickness is about 50 μm on the surface shaft,it is sorbite,a small amount of ferrite and bainite.And close the surface 13 mm,the microstructures are sorbite,fine pearlite and a small amount of ferrite.The hydraulic bearing during heat treatment of internal macro-original crack pillar under the action of working stress is the important reason for brittle fracture.关键词
轴承/断裂/失效/组织/形貌Key words
bearing/fracture/failure/structure/morphology分类
矿业与冶金引用本文复制引用
王鑫,王璐,邢珂..40Cr液压轴承断裂失效分析研究[J].铸造技术,2018,39(2):465-468,4.
