Zobba na Ajiyayyen, wanda kuma aka sani da zoben anti-extrusion na BURs, suna yin daidai abin da sunansu ke nufi: suna aiki azaman tallafi don rufe taro.
Akwai abubuwa daban-daban da ake amfani da su don yin zoben ajiya, gami da polymers da elastomers.Mafi na kowa polymers don madadin zoben su ne PEEK, Nylon, da PTFE.Yanke shawarar abin da za a yi amfani da shi yawanci ya dogara ne akan matsa lamba da buƙatun zafin jiki.
A cikin wannan shafin yanar gizon, za mu sake nazarin manufar da aikace-aikace na madadin zoben, sa'an nan kuma tattauna jeri na matsa lamba da zafin jiki wanda PEEK, Nylon, da PTFE suka dace da su.Manufar Ajiyayyen Zobba
Zoben da aka ƙera da kyau wanda aka ɗora tsakanin zoben o-ring da tazarar sharewa zai iya hana hatimin o-ring ɗin fita cikin ratar yayin ba da tallafi da kariya ga o-ring.Suna aiki da kyau a cikin yanayi inda akwai babban rata na extrusion, yanayin zafi, ko matsa lamba.Ana yawan amfani da zoben ajiya a:
- bawuloli ga na'ura mai aiki da karfin ruwa da'irori
- sinadaran famfo
- injunan gyare-gyaren allura
- mannewa rarraba bawuloli
- dannawa
- kayan aikin injin
- magunguna
- injinan noma
PEEK Ajiyayyen Zobba
Ana iya amfani da PEEK a matsi har zuwa 20,000 psi da kuma matsakaicin zafin jiki na 500F.Wannan ya sa PEEK ya dace don babban matsa lamba da aikace-aikacen zafin jiki.Hakanan ana samun PEEK cike don ƙarin ƙarfi da tauri.PEEK ya dace da sinadarai iri-iri, gami da mahaɗan tsaftacewa, kuma yana da ƙananan juzu'i.
Nailan Ajiyayyen Zobba
Nailan 6,6yana aiki da kyau a matsananciyar ƙasa 10,000 psi da matsakaicin zafin jiki na 186°F.Naylon yana aiki da kyau don aikace-aikacen matsa lamba amma yana da iyaka sosai game da yanayin zafi.Nylon 6,6 cike da Molybdenum Disulfide (MoS2) don rage gogayya ana amfani da shi don zoben ajiya.Ɗaya daga cikin abubuwan da ke haifar da nailan 6,6 shine shayar da ruwa, wanda zai iya bambanta daga 0.5% zuwa 1.4% a kowace awa 24.
PTFE Ajiyayyen Zobba
Cike PTFE (cikakken gilashi, cike da carbon, cika graphite, cike da tagulla)yana aiki tare da matsa lamba har zuwa 5,800 psi, duk da haka budurwa PTFE tana iyakance zuwa kusan 3,600 psi.Budurwa PTFE, saboda haka, yana iyakance ga ƙananan aikace-aikacen matsa lamba da matsakaici yayin da PTFE cike yake aiki don yawancin matsakaici zuwa aikace-aikacen matsa lamba.Matsakaicin zafin jiki na aiki don PTFE yana kusa da 575 ° F, wanda ya sa ya dace don ƙananan matsa lamba, aikace-aikacen zafin jiki mai girma.PTFE yana da juriya da sinadarai sosai kuma yana da ƙananan juzu'i.
Kammalawa
Lokacin da yazo ga zoben ajiya, PTFE yana aiki da kyau don aikace-aikacen ƙananan matsa lamba amma kuma yana iya ɗaukar yanayin zafi.Naylon na iya ɗaukar matsakaici zuwa aikace-aikacen matsa lamba amma yana iyakance ta wurin aiki da zafin jiki da sha ruwa.Lokacin da yazo ga kayan zobe na madadin, PEEK na iya ɗaukar mafi girman matsi da madaidaicin yanayin zafi.Ka tuna cewa PEEK da PTFE suna kwatankwacin lokacin da ya zo ga ƙarancin juzu'i da daidaituwar sinadarai, duka biyun suna da mahimmanci a aikace-aikacen rufewa.
Lokacin aikawa: Afrilu-14-2017