Mai rufewa mai wanki wani nau'in kayan gyara ne da ake amfani da shi don rufe injina, kayan aiki, da bututun mai a duk inda akwai ruwa. Abu ne da ake amfani da shi don rufewa ciki da waje. Ana yin wanki na ƙarfe da ƙarfe ko farantin da ba na ƙarfe ba kamar kayan ta hanyar yankan, tambari, ko tsarin yankewa, ana amfani da su don rufe haɗin gwiwa tsakanin bututun da tsakanin abubuwan kayan aikin injin. Dangane da kayan, ana iya raba shi zuwa maƙallan ƙarfe na ƙarfe da wankin da ba na ƙarfe ba. Masu wankin ƙarfe sun haɗa da wankin tagulla,bakin karfe washers, Iron washers, aluminum washers, da dai sauransu. Wadanda ba karfe sun hada da asbestos washers, non asbestos washers, takarda washers,roba washers, da dai sauransu.
Wajibi ne a lura da abubuwan da ke gaba:
(1) Zazzabi
A mafi yawan hanyoyin zaɓe, yanayin zafin ruwa shine abin la'akari na farko. Wannan zai rage kewayon zaɓi da sauri, musamman daga 200 ° F (95 ℃) zuwa 1000 ° F (540 ℃). Lokacin da tsarin zafin jiki na aiki ya kai matsakaicin iyakar zafin aiki mai ci gaba na takamaiman kayan wanki, yakamata a zaɓi matakin mafi girma na kayan. Wannan kuma ya kamata ya zama lamarin a wasu yanayi mara zafi.
(2) Aikace-aikace
Mafi mahimmancin sigogi a cikin aikace-aikacen shine nau'in flange dakusoshi amfani. Girman, yawa, da kuma darajar kusoshi a cikin aikace-aikacen suna ƙayyade tasiri mai tasiri. Ana ƙididdige yanki mai tasiri na matsawa bisa la'akari da girman lamba na mai wanki. Za'a iya samun matsi mai mahimmancin matsi mai mahimmanci daga nauyin da ke kan kusoshi da ma'aunin lamba na mai wanki. Idan ba tare da wannan siga ba, ba zai yuwu a yi zaɓi mafi kyau tsakanin abubuwa da yawa ba.
(3) Mai jarida
Akwai dubban ruwaye a cikin matsakaici, kuma lalata, oxidation, da yuwuwar kowane ruwa ya bambanta sosai. Dole ne a zaɓi kayan bisa ga waɗannan halaye. Bugu da ƙari, dole ne a yi la'akari da tsaftacewa na tsarin don hana lalatawar mai wanki ta hanyar tsaftacewa.
(4) Matsi
Kowane nau'in mai wanki yana da mafi girman matsi na ƙarshe, kuma aikin ɗaukar matsi na mai wanki yana raunana tare da haɓaka kauri. Mafi ƙarancin abu, mafi girman ƙarfin ɗaukar matsa lamba. Dole ne zaɓin ya kasance bisa matsa lamba na ruwa a cikin tsarin. Idan matsin lamba sau da yawa yakan yi tashin hankali, ya zama dole a fahimci cikakken halin da ake ciki don yin zaɓi.
(5) darajar PT
Abin da ake kira ƙimar PT shine samfurin matsa lamba (P) da zafin jiki (T). Rashin juriya na kowanemai wanki abu ya bambanta a yanayin zafi daban-daban kuma dole ne a yi la'akari da shi gabaɗaya. Gabaɗaya, masana'anta na gaskets za su samar da matsakaicin ƙimar PT na kayan.
Lokacin aikawa: Yuli-17-2023