CAJ | 학술논문

采用激光加工的方法在压裂泵柱塞试件表面熔蚀出一系列不同面积比和直径的微小型、低密度圆柱形表面织构凹坑。采用销－盘试件运动模拟3000型压裂泵密封摩擦副，在MDW?1型万能摩擦磨损试验机上研究不同表面织构的20＃钢与丁腈橡胶弹性材料配副时的摩擦特性。结果表明：合理布置的表面织构能够明显降低摩擦因数与温升，且凹坑能够吸纳磨粒、避免二次磨损。在载荷100 N、速度2?2 m／s试验条件下，表面织构均匀分布、面积比为2?0％、直径为0?20 mm圆柱形凹坑，可使摩擦因数和温升分别降低56?2％、55?4％，且试件表面磨斑、磨痕明显减少。
채용격광가공적방법재압렬빙주새시건표면용식출일계렬불동면적비화직경적미소형、저밀도원주형표면직구요갱。채용소－반시건운동모의3000형압렬빙밀봉마찰부，재MDW?1형만능마찰마손시험궤상연구불동표면직구적20＃강여정정상효탄성재료배부시적마찰특성。결과표명：합리포치적표면직구능구명현강저마찰인수여온승，차요갱능구흡납마립、피면이차마손。재재하100 N、속도2?2 m／s시험조건하，표면직구균균분포、면적비위2?0％、직경위0?20 mm원주형요갱，가사마찰인수화온승분별강저56?2％、55?4％，차시건표면마반、마흔명현감소。
The surface of fracturing pump plungers specimen is corroded a series of cylindrical pit textures of different area ratio and diameter by laser.By simulating the seal and friction pairs of 3000 fracturing pump with the motion of pin and plate specimens,the tribological properties of a motion pairs made up of hard 20 steel with different surface textures and elastic Nitrile rubber was investigated in a MDW?1 universal friction and wear testing machine. The experimental re?sults show that the friction coefficient and temperature rise are significantly reduced for the specimens with reasonable lay?out surface textures,and the pit in the specimen surface can absorb abrasive and avoid the second wear of the specimens. On test conditions of the load of 100 N and the speed of 2.2 m/s,the cylindrical pit textures in uniform distribution,with area ratio of 2% and diameter of 0.20 mm,can reduce friction coefficient and temperature rise by 56?2%,55?4%,respec?tively.