CAJ | 학술논문

以某排放型单缸柴油机油泵凸轮为研究对象，对其表面进行激光微织构加工，通过发动机台架耐久性试验和表面磨损量检测考察织构化凸轮的耐磨性以及对发动机可靠性的影响，并论证球墨铸铁代替钢作为凸轮材料的可行性。研究结果表明：经过300 h 全速全负荷的耐久性试验，球墨铸铁型激光微织构凸轮，其表面磨损量仅2 m左右，相对于非织构区域，激光加工区域附近的硬度明显提高，耐磨性能得到有效改善；同时样机的动力性能、排放性能以及经济性能都保持良好，未出现功率缺失等不良现象，验证了球墨铸铁型织构凸轮的可靠性。
이모배방형단항시유궤유빙철륜위연구대상，대기표면진행격광미직구가공，통과발동궤태가내구성시험화표면마손량검측고찰직구화철륜적내마성이급대발동궤가고성적영향，병론증구묵주철대체강작위철륜재료적가행성。연구결과표명：경과300 h 전속전부하적내구성시험，구묵주철형격광미직구철륜，기표면마손량부2 m좌우，상대우비직구구역，격광가공구역부근적경도명현제고，내마성능득도유효개선；동시양궤적동력성능、배방성능이급경제성능도보지량호，미출현공솔결실등불량현상，험증료구묵주철형직구철륜적가고성。
In the light of a pump cam of emission type single cylinder diesel engine, a laser micro texture on its surface is inspected. The influence of abrasive resistance of the cam is explored through the engine durability test and surface abrasion test when the cam surface is applied laser surface texturing and reliability of engine. Meanwhile, the feasibility of using the nodular cast iron instead of steel as the camshaft materials is discussed. The results show that: after 300 hours' durability test with full speed and load, the surface wear of the cam is only about 2 m, which is made by nodular cast iron and applied laser surface texturing. At the same time, the hardness and the wear resistance of the area near the surface texturing increased observably, compared to the non-texturing area. In addition, the power performance, emission performance and economic performance of the engine are still good, the power loss and other bad conditions do not occur. In addition, it is feasible to use nodular cast iron by laser surface texturing instead of steel as the camshaft materials.