水泵的填料是什么材质

2025-04-08 01:33:09
推荐回答(2个)
回答1:

传统的填料是石棉绳编织成的,按浸泡液不同,常用有牛油盘根,石墨盘根,现在还有新填料聚四氟乙烯

回答2:

随着新材料的不断出现,填料结构形式也有很大变化,无疑它将促使填料密封应用更为广泛,用作填料的材料应具备如下特性。
1)有一定的弹塑性。当水泵填料受轴向压紧时能产生较大的径向压紧力,
以获得密封;当机器和轴有振动或偏心及填料有磨损后能有一定的补偿能力(追随性)。
2)有一定的强度。使水泵填料不至于在未磨损前先损坏。
3)化学稳定性高。即其与密封流体和润滑剂的适应性要好,不被流体介质腐蚀和溶胀,同时也不污染介质。
4) 不渗透性好。由于流体介质对很多纤维体都具有一定的渗透作用,所以对填料的组织结构致密性要求高,因此填料制作时往往需要进行浸渍、充填相应的填充剂和润滑剂。
5)导热性能好。易于迅速散热,且当摩擦发热后能承受一定的高温。
6)自润滑性好。即摩擦系数低耐磨损。
7)填料制造工艺简单,装拆方便,价格低廉。
同时能满足上述要求的材料较少,如一些金属软填料、碳素纤维填料、柔性石墨填料等,它们的性能好,适应的范围也广,但价格较贵。而一些天然纤维类填料,如麻、棉、毛等,其价格不高,但性能稍差,适应范围比较窄。所以,在水泵填料材料选用时应对各种要求进行全面、综合的考虑。

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