CAJ | 학술논문

研究了不同等温温度及Mn、Si、Cu、Mo对奥贝球铁组织和力学性能的影响，讨论了奥贝球铁加工硬化对机加工性能的影响。同时，将奥贝球铁齿轮代替40Cr调质钢齿轮进行装机试验，对降噪声和耐磨性进行了测试。结果表明，奥贝球铁齿轮与40Cr调质钢齿轮相比，力学性能高，柴油机整机噪声下降1.92dB，齿轮侧噪声下降5.3dB。奥贝球铁齿轮经过45h磨合后，在标定工况下连续运转200h，齿轮无异常磨损，齿轮间隙离极限间隙还有0.13mm的余量，所以其摩擦磨损性能合格，所生产的奥贝球铁齿轮满足设计使用要求。
연구료불동등온온도급Mn、Si、Cu、Mo대오패구철조직화역학성능적영향，토론료오패구철가공경화대궤가공성능적영향。동시，장오패구철치륜대체40Cr조질강치륜진행장궤시험，대강조성화내마성진행료측시。결과표명，오패구철치륜여40Cr조질강치륜상비，역학성능고，시유궤정궤조성하강1.92dB，치륜측조성하강5.3dB。오패구철치륜경과45h마합후，재표정공황하련속운전200h，치륜무이상마손，치륜간극리겁한간극환유0.13mm적여량，소이기마찰마손성능합격，소생산적오패구철치륜만족설계사용요구。
The influences of different austemper temperatures,content of manganese,silicon,copper and molybdenum on the microstructures and mechanical properties of austempered ductile iron (ADI) were studied.The effects of work hardening on machinablities of ADI were also discussed.Meanwhile some ADI gears replaced the 40Cr hardened and tempered steel gears in a diesel engine to test their functions of reducing noise and wear resistance.It was found that the mechanical properties of ADI gears were higher than that of 40Cr hardened and tempered steel gears.The ADI gears decreased the working noise of the whole diesel engine by 1.92dB and the noise in side of the gears by 5.3dB.After 45 hours' run-in and 200 hours' continuous operation in demarcated conditions,there was no abnormal wear in the ADI gears and there still existed allowance of 0.13mm between limit gap and gear gap.So the frictional wear properties of ADI gears were qualified and the ADI gears produced could meet the design and appilication requirements.