摘要
为研究磨球材料对G95Cr18不锈钢摩擦磨损特性的影响,分别采用G95Cr18不锈钢、Al_(2)O_(3)陶瓷和WC硬质合金作磨球,以G95Cr18不锈钢作磨盘,在室温和200℃进行了干摩擦磨损试验。随后采用3D共聚焦显微镜检测了磨盘磨痕的三维形貌和二维截面轮廓,计算了磨盘的磨损率,分析了磨盘的磨损机制。结果表明:不论是室温还是在200℃,三种摩擦副的摩擦因数随磨球材料的不同从大到小的变化均为G95Cr18磨球-Al_(2)O_(3)磨球-WC磨球,磨损率则为Al_(2)O_(3)磨球-G95Cr18磨球-WC磨球;200℃的摩擦因数小于室温下的摩擦因数,磨损率则相反。采用G95Cr18不锈钢磨球时磨盘的磨损机制为黏着磨损和磨粒磨损,采用Al_(2)O_(3)陶瓷磨球时为磨粒磨损(主)和黏着磨损(次),采用WC硬质合金磨球时为氧化磨损(主)和磨粒磨损(次)。
In order to investigate the influence of abrasive ball materials on friction-wear characteristics of G95 Cr18 stainless steel, the dry friction-wear teats were performed by using G95 Cr18 stainless steel, Al_(2)O_(3) ceramic and WC carbide as abrasive balls, using G95 Cr18 stainless steel as abrasive disk, at room-temperature and at 200 ℃, respectively. Subsequently, the three-dimensional morphology and two-dimensional section profiles of abrasion marks on the abrasive disk were detected by a 3 D confocal microscope, the wear rates were calculated, and the wear mechanism for the abrasive disk was analyzed. The results showed that(a) either at room temperature or at 200 ℃, the variation of friction coefficient of the three friction pairs with the different abrasive materials all was from G95 Cr18 abrasive ball to Al_(2)O_(3) abrasive ball to WC abrasive ball from great to small, and the variation of wear rate with different abrasive ball materials was from Al2O3abrasive ball to G95 Cr18 abrasive ball to WC abrasive ball from great to small;(b)the friction coefficient at 200 ℃ was smaller than that at room-temperature, and the wear rate was opposite;and(c) wear mechanism of the abrasive disk was the adhesive wear and abrasive wear when G95 Cr18 stainless steel abrasive ball was used, the abrasive wear(primary) and adhesive wear(secondary) when Al_(2)O_(3) ceramic abrasive ball was used, and the oxidation wear(primary) and abrasive wear(secondary) when WC carbide abrasive ball was used.
作者
邵若男
黄雄荣
韩浩盛
SHAO Ruonan;HUANG Xiongrong;HAN Haosheng(Shanghai Bearing Technology Research Institute Limited Company,Shanghai 201801,China)
出处
《热处理》
CAS
2022年第6期54-58,共5页
Heat Treatment
