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判断润滑脂变质方法

2024-10-30

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轴承在运转过程中,为了提供更好的性能使用,一般会采用润滑脂进行润滑轴承,可以降低轴承运转摩擦度和温度的升高,如果润滑脂是变质的,不仅起不到相关的作用,反而对轴承的使用更加不利,因此我们在购买润滑脂时一定要学会如何去辨别润滑脂是否已经变质。这里就教大家几个方法判断润滑油脂是否变质!

◆油流观察法

取两只量杯,其中一个盛有待检查的润滑油,另一只空放在桌面上,将盛满润滑油的量杯举高离开桌面30-40厘米并倾斜,让润滑油慢慢流到空杯中,观察其流动情况,质量好的润滑油油流时应该是细长、均匀、连绵不断,若出现油流忽快忽慢,时而有大块流下,则说润滑油已变质。

◆手捻法

将润滑油捻在大拇指与食指之间反复研磨,较好的润滑油手感到有润滑性、磨屑少、无摩擦,若感到手指之间的砂粒之类较大摩擦感,则表明润滑油内杂质多,不能再用,应更换新润滑油。

◆光照法

在天气晴朗的日子,用螺丝刀将润滑油撩起,与水平面成45度角。对照阳光,观察油滴情况,在光照下,可清晰地看到润滑油中无磨屑为良好,可继续作用,若磨屑过多,应更换润滑油。

◆油滴痕迹法

取一张干净的白色滤试纸,滴油数滴在滤试纸上,待润滑油渗漏后,若表面有黑色粉末,用手触摸有阻涩感,则说明润滑油里面杂质已很多,好的润滑油无粉末,用手摸上去干而光滑,且呈黄色痕迹。

(来源:网络)