Waɗanne matsaloli ya kamata a kula da su a cikin zaɓin hatimin roba

Waɗanne matsaloli ya kamata a kula da su a cikin zaɓin hatimin roba

Zaɓin hatimin roba dole ne yayi la'akari da yanayin aiki, don zaɓar madaidaicin nau'in hatimi da kayan hatimi, tsarin shigarwa.

Zaɓin hatimin roba yana buƙatar la'akari da yanayin aiki gabaɗaya sun haɗa da: zazzabi, matsa lamba, matsakaici.Sauran suna buƙatar haɗuwa tare da halayen kayan aiki da kansu don yin la'akari da zaɓin hatimi.

Game da yawan zafin jiki, kamar abin rufewa NBR kayan aiki zazzabi kewayon shine gabaɗaya -40 ~ +120 ℃.Yana da fiye da 120 ℃ don la'akari da amfani da FKM, har ma da kayan PTFE, ƙananan zafin jiki yana da wuya, gabaɗaya magana a cikin yanayin -20 ~ -40 ℃ don yin la'akari da yin amfani da NBR mai sanyi, kayan NBR gabaɗaya a ƙasa. yanayin zafin jiki zai haifar da taurin kayan abu, wanda zai haifar da yabo, irin su locomotive na jirgin kasa a arewacin lokacin hunturu sau da yawa suna bayyana irin waɗannan matsalolin.

Amma ga matsa lamba, yana rinjayar nau'in hatimin da za a zaɓa.Gabaɗaya magana, yin amfani da hatimin roba ko PU don ƙarancin matsa lamba da matsakaici ba zai sami matsala mai girma ba.Amma don la'akari da matsalar matsa lamba mai tasiri, irin su kayan aikin gini a farkon, rufe lokacin da tasirin tasirin sa ya fi ƙarfin aiki na yau da kullum, don haka sau da yawa za su zabi matsa lamba har zuwa 70MPA tasirin anti-matsi HBY ko SPGW a matsayin babban hatimi. .PTFE hadaddiyar hatimi kuma zaɓi ne na kowa.

Matsalar matsakaici tana da sauƙi.Kawai kula da wasu ƙananan matsaloli na musamman, kamar silinda na masana'antar ƙarfe yakan yi amfani da ruwa-glycol da ruwa mai phosphate.Wani lokaci, ko da yake yawan zafin jiki na aiki ba shi da yawa, amma zaɓi na kayan rufewa ya kamata a yi hankali sosai, ana amfani da mai na hydraulic lokacin da karshen ko FKM.

Zaɓin hatimi yana da mahimmanci, ko kuma dole ne a haɗa shi tare da yanayin kayan aiki da kansa don zaɓar.