CAJ | 학술논문

为了探究某发动机铝质活塞阳极氧化对其热负荷的影响，借助硬度塞温度测试法及数值分析手段，分别对该发动机原始活塞和阳极氧化活塞进行温度场和热应力计算分析。结果表明，在最大负荷工况下，阳极氧化活塞最高温度较原始活塞最高温度降低了7.1%，其最大热应力较原始活塞最大热应力减小了24.5%，其他区域温度和热应力均有不同程度的减小。阳极氧化工艺降低了活塞的热负荷，同时有利于增强活塞的可靠性，延长其使用寿命。
위료탐구모발동궤려질활새양겁양화대기열부하적영향，차조경도새온도측시법급수치분석수단，분별대해발동궤원시활새화양겁양화활새진행온도장화열응력계산분석。결과표명，재최대부하공황하，양겁양화활새최고온도교원시활새최고온도강저료7.1%，기최대열응력교원시활새최대열응력감소료24.5%，기타구역온도화열응력균유불동정도적감소。양겁양화공예강저료활새적열부하，동시유리우증강활새적가고성，연장기사용수명。
In order to investigate heat loads of an engine piston made of aluminum after anodic oxi-dation,both of temperature field and thermal stress of original piston and anodic oxidation piston were researched combined simulation with experiments.It shows that,under peak load conditions,compared with the original piston the highest temperature of anodic oxidation piston is reduced by 7.1%,the maximum thermal stress is reduced by 24.5%,the situations of other points of piston are of the same trends.As a result,heat loads of the piston are decreased after anodic oxidation and it is benefit for thereliability and working life of piston.