内燃机工程2026，Vol.47Issue(2)：118-124,7.DOI:10.13949/j.cnki.nrjgc.2026.02.014
基于共振浇注工艺的柴油机缸体微观组织与力学性能
Microstructure and Mechanical Properties of a Diesel Engine Cylinder Block Based on Resonance Casting Process
摘要
Abstract
To solve the shrinkage porosities and uneven tensile strength problems of gray cast iron cylinder blocks based on the traditional static casting,resonant casting tests were conducted on a six-cylinder diesel engine block with self-developed resonant casting equipment,and resonant casting were compared with the static casting.The resonant casting parameters include 5 000～5 200 r/min resonant speed,15 min resonant duration and 20～25 m/s2 acceleration.Results show that the pour-then-vibrate scheme delivers an optimal material performance.Graphite whose morphology achieves 100%is classified as Type A.The average tensile strength reaches 308.4 MPa,showing a 70.14%improvement in uniformity and a 38.3 MPa increase compared to that of static casting,while the average hardness rises to 192.2 HB,increasing by 11.9 HB compored to that of static casting.Surface inspection revealed the absence of shrinkage cavities or sand inclusions in pour-then-vibrate blocks.Conversely,both static casting and vibrate-then-pour blocks exhibited surface defects such as sand inclusions and shrinkage porosities,and the surface defects in vibrate-then-pour blocks were attributed to improper vibration timing.The resonant casting simultaneously enhances tensile strength uniformity and suppresses surface defects in cylinder blocks.关键词
共振浇注/静态浇注/气缸体/灰铸铁Key words
resonance casting/static pouring/cylinder block/gray cast iron分类
能源科技引用本文复制引用
姜峰,李润泽,黄传刚,何强,杨胜锋,秦栋..基于共振浇注工艺的柴油机缸体微观组织与力学性能[J].内燃机工程,2026,47(2):118-124,7.基金项目
广西重点研发计划项目(桂科AB24010293、桂科AB24010298、桂科AB25069449) （桂科AB24010293、桂科AB24010298、桂科AB25069449）
广西科技重大专项项目(桂科AA24206064) Guangxi Key Research and Development Program(Guike AB24010293,Guike AB24010298,Guike AB25069449) （桂科AA24206064）
Guangxi Science and Technology Major Project(Guike AA24206064) （Guike AA24206064）
