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本文介绍清华大学用土法生产的铁－石墨轴承ｐＶ值、耐磨性能测定方法及试验数据。 ｐＶ值之测定是在四球磨耗机上进行的。当轴承含碳量为２％时，在无润滑条件下 ｐＶ≤２５ （ 单位为公斤／公分２·公尺／秒）为正常工作区，而有油润滑条件下ｐＶ ≤ １００～１１５ 为正常工作 区。在Ｖ≈０．２公尺／秒时最大ｐＶ值可达１１７。试验证明含碳量对ｐＶ 值有一定影响，当含碳量 约为力２．５％时ｐＶ值可提高到１２０～１２５。 耐磨性能试验是在磨损试验机上进行的，用印痕法来测量试件之磨损量。试验均分有油润滑 及无油润滑两种进行，有油润滑寸耐磨性增加。一般含碳量较高之试件则摩擦系数与磨损量降 低，其中含碳量力４％的较好，其摩擦系数在有油润滑条下μ≈０，０５～０．０７，在无润滑条下 μ≈０．１～０．２０。速度及比压增加，则磨损量增加，当试件渗硫后可提高耐磨性约２倍。 磨料性磨损在苏式Ｘ４－Б试验机上进行。试验证明含碳量较高时，磨料性磨损性能较好。
This paper introduces the pV value of iron-graphite bearing produced by Tsinghua University, the method and test data of wear resistance. The pV value was determined on a four-ball wear machine. When the bearing carbon content is 2%, pV≤25 (kg / cm 2 · m / s) is the normal working area under the condition of no lubrication, while pV ≤100 ~ 115 under the condition of oil lubrication is normal work Area. The maximum pV value can reach 117 at V≈0.2 meters / second. The experiment shows that the carbon content has some influence on the pV value. When the carbon content is about 2.5%, the pV value can be increased to 120-125. Abrasion resistance test is carried out on the wear testing machine, with the impression method to measure the amount of wear test pieces. The test was divided into two types of oil-lubricated and oil-free lubricated, oil lubricated inch wear increased. The higher the carbon content of the specimen is the friction coefficient and wear reduction, carbon content of 4% of which is better, the friction coefficient in the oil lubrication under μ ≈ 0,05 ~ 0.07, Under μ ≈ 0.1 ~ 0.20. When the speed and specific pressure increase, the wear amount increases. When the specimen is infiltrated, the wear resistance can be increased by about 2 times. Abrasive wear on the Soviet-style X4-Б test machine. Experiments show that carbon content is higher, abrasive wear better performance.