农用汽车后桥EQ1060主动齿轮螺纹断裂分析  

Analysis of cracks in drive gear’s thread of“EQ1060”used in agricultural truck rear axle

作　　者：陈天翔 陈宏[2] 何玉林[2] CHEN Tianxiang;CHEN Hong;HE Yulin(Yangzhou Branch of Special Equipment Safety Supervision Inspection Institute of Jiangsu Province,Yangzhou 225000,Jiangsu,China;Department of Mechanical&Electronic Engineering,Jiangsu Vocational College of Finance&Economics,Huaian 223003,Jiangsu,China)

机构地区：[1]江苏省特种设备安全监督检验研究院扬州分院,江苏省扬州市225000 [2]江苏财经职业技术学院智能工程技术学院,江苏省淮安市223003

出　　处：《农业装备与车辆工程》2023年第3期53-55,共3页Agricultural Equipment & Vehicle Engineering

基　　金：淮安市自然科学研究项目(HABZ201922)。

摘　　要：采用宏观及微观检测进行形貌观察、化学成分分析、金相检测,对EQ1060主动齿轮螺纹断裂情况进行了分析。结果表明,由于退火时间过短,加热温度低,使得花键与螺纹根部为热影响区,导致该处强度下降,脆性加大,当外力超出其材料强度极限时造成断裂。In order to find out the reason for the drive gear’s cracks,the macro characteristics,micro-morphology,microstructure of the cracked gear’s thread were observed and analyzed.The composition and hardness were measured.The results show that the spline and thread’s root become heat-affected zone because of the short annealing time and the low heating temperature,causing its strength decreases and its brittleness increases.The cracks happened when the external force exceeded its material’s limited strength.

关 键 词：EQ1060 齿轮螺纹 断裂 

分 类 号：U463.218[机械工程—车辆工程] TH132.429[交通运输工程—载运工具运用工程]