CAJ | 학술논문

为改善钻井泥浆泵活塞的耐磨性能,采用脉冲磁场-电沉积方法在40Cr 试件表面制备 Ni-TiN 复合镀层.利用磨损试验机、电子分析天平、扫描电镜、正交试验法研究并优化 Ni-TiN 复合镀层的制备工艺参数.结果表明,当磁场强度为0．5 T 时,Ni-TiN 复合镀层的磨损量到达最小值0．72 mg,当阴极电流密度和占空比分别为2．2 A/dm2和50％时,Ni-TiN 复合镀层的磨损量达到最小值6．4 mg.脉冲磁场-电沉积 Ni-TiN 复合镀层的最佳工艺参数为磁场强度0．5 T,电流密度2．2 A/dm2,占空比40％.
위개선찬정니장빙활새적내마성능,채용맥충자장-전침적방법재40Cr 시건표면제비 Ni-TiN 복합도층.이용마손시험궤、전자분석천평、소묘전경、정교시험법연구병우화 Ni-TiN 복합도층적제비공예삼수.결과표명,당자장강도위0．5 T 시,Ni-TiN 복합도층적마손량도체최소치0．72 mg,당음겁전류밀도화점공비분별위2．2 A/dm2화50％시,Ni-TiN 복합도층적마손량체도최소치6．4 mg.맥충자장-전침적 Ni-TiN 복합도층적최가공예삼수위자장강도0．5 T,전류밀도2．2 A/dm2,점공비40％.
In order to improve the wear resistance of pistons in drilling mud pumps,Ni-TiN composite coatings were prepared by pulse magnetic-electrodeposition method on the surface of 40Cr pistons.The plating parame-ters for preparing Ni-TiN composite coatings were investigated by using abrasion machine,electronic analytical balance,scanning electron microscope,and orthogonal test.The results show that the Ni-TiN composite coat-ing deposited at magnetic intensity of 0.5 T had the minimal wear mass loss (0.72 mg).And the Ni-TiN com-posite coating prepared at current density of 2.2 A/dm2 and on-duty ratio of 50% had the minimal wear mass loss (0.64 mg).The optimized parameters are listed as follows:magnetic intensity 0.5 T,current density 2.2 A/dm2 and on-duty ratio 50%.