4B28TC柴油机进气门失效分析及措施研究  

Failure Analysis and Forth Proposals for Process Improvement for Intake Valve Fracture of 4B28TC Diesel Engines

作　　者：余力 张斌 潘安霞 Yu Li;Zhang Bin;Pan An-xia(Changchai Co.,Ltd.,Jiangsu Changzhou 213002;School of Mechanical Engineering,Changzhou Unversity,Jiangsu Changzhou 213164)

机构地区：[1]常柴股份有限公司,江苏常州213002 [2]常州大学机械学院,江苏常州213164

出　　处：《内燃机与配件》2025年第3期56-58,共3页Internal Combustion Engine & Parts

摘　　要：本文针对某公司4B28TC型柴油机进气门异常断裂的情况,借助扫描电镜、金相显微镜、直读光谱仪、能谱仪以及硬度计等仪器,进行了气门失效分析,系统研究了气门原材料、加工过程、热处理工艺等因素对气门失效的影响。结果表明,导致4B28TC型柴油机进气门异常断裂的主要原因是气门盘部堆焊层堆焊工艺缺陷。在此基础上,本文提出了材料选用、工艺改进和加工质量控制等方面的措施和建议。Referring to intake valve fracture of 4B28TC diesel engines developed by A company.,this article carries out failure analysis with the help of various testing apparatus,such as,SEM,metallurgical microscope and hardness tester;and systematically studies factors attributing to the intake valve failure,such as raw materials of valve,manufacturing process and heat treatment,etc.The results show that main reason causing intake valve failure of 4B28TC diesel engine is the deficiency of overlaying welding process of the valve retainer,On this basis,the article sets forth proposals for process improvement and control of process quality.

关 键 词：进气门 失效分析 锥面堆焊 4CR10SI2MO 5CR21MN9NI4N 

分 类 号：U464.134.3[机械工程—车辆工程]