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机械的配合面密封,一般采用纸垫或腻子夹在配合面中间。但在生产实践中,有些机械的配合面不适宜用纸垫来密封,因为结构确定的配合面比较狭窄。这样的结构常用腻子来密封防漏。不过用腻子密封也有它的缺点。腻子大都采用清漆和填料、溶剂等配制而成,涂到配合面上以后,必须在干燥之前合拢配合面。应该说,用腻子密封在初期阶段效果较好,但是随着时间的推移,腻子中的有机溶剂将会挥发。使腻子干结并开始逐渐收缩,致使配合面之间实际
Machinery with the surface seal, the general use of paper pad or putty folder in the middle of the mating surface. However, in production practice, some of the mechanical mating surfaces are not suitable for sealing with paper pads, because the structure of the mating surface is relatively narrow. This structure commonly used leak-proof putty to seal. But sealing with putty also has its drawbacks. Putty most of the varnish and filler, solvent and other preparation, coated to the surface after the match, must be closed before drying with the mating surface. It should be said that the use of putty seal in the initial stage of better, but over time, the organic solvent putty will be volatile. Putty dry knot and began to gradually shrink, resulting in the actual between the face