Kushandiswa kwakanyanya kwe nitrile rubber gaskets? 

Saka, iwe uri kushamisika nezve Honestly, vanhu vazhinji vanongofunga mafuta kuramba vomira ipapo. Ndiyo danho rakasimba rekutanga, asi rinopotsa nuance. Mukuita, kukosha kweNBR kwechokwadi kuri muchiyero chayo-chakanaka compression set, decent abrasion resistance, uye kuti kuramba kwakavimbika kumafuta, mafuta, uye makemikari akawanda, zvose pamutengo usingaputsi bhangi. Ndiyo bhiza rekushanda, kwete bhiza rekuratidzira. The trick kuziva panoshanda iyo balance uye painotanga kudonha.

Iko NBR Inopenya Chaizvo: Nzvimbo Inotapira

Kwandiri, iyo yekare, isina-brainer application iri mumotokari mafuta masisitimu. Tiri kutaura mafuta epombi modules, kutumira unit seals, carburetor gaskets (painjini dzekare, hongu), uye dzakasiyana-siyana O-mhete mumitsara. Chinokosha apa ndechekugara kuratidzwa peturu uye dhiziri, kazhinji ine mafuta ekuwedzera emazuva ano. Mushonga weNBR wakajairwa, toti nepakati acrylonitrile (ACN) zvemukati, unobata izvi zvakanaka. Ndakavaona vachigara kwemakore munzvimbo idzi umo tembiricha isinganyanyi kudarika 100°C. Zvinofanotaurwa.

Ipapo kune general maindasitiri hydraulics. Kwete iyo yepamusoro-soro, inodzivirira moto-inodzivirira phosphate ester masisitimu-ndiyo mhuka yakasiyana-asi yako yakajairwa mineral oil-based hydraulic system mumashini. Iwo gaskets ari pamavharuvhu anovhara, emvura reservoirs, uye yakaderera-kudzvanywa pombi. Ivo vari pasi pekumanikidzwa nguva dzose uye vakashambidzwa mumafuta. Yakanyatsogadzirwa NBR gasket pano inopa yakavimbika, yenguva refu chisimbiso. Iyo yekutadza modhi inowanzoomeswa zvishoma nezvishoma kwemakore mazhinji, kwete kungoerekana kuputika-kubuda kwenjodzi, izvo ndizvo zvaunoda pakugadzirisa kuronga.

Imwe nzvimbo isingawanzo tariswa ndeyekugeza-pasi midziyo mukugadzira chikafu. Zvino, ndinzwe kunze-NBR haisati iri yechikafu-giredhi kunze kwekunge yakanyatso kusanganiswa uye yakasimbiswa. Asi kune zvisimbiso zvekunze padzimba dzepombi, kutakura magasi pamidziyo inopfapfaidzwa nemvura inopisa, caustic cleaners, uye ma sanitizer akapfava, ishasha inodhura. Iyo inopesana nekuzvimba uye kushatisa iyo inogona kuuraya yakajairwa EPDM gasket mune iyo kemikari sopu. Iwe unongofanirwa kuve nechokwadi chekuti haisi kutarisana zvakananga nerukova rwechigadzirwa.

Iyo Limits uye Iyo Anenge Zvimiro

Apa ndipo apo ruzivo rwunokudyira mari, kazhinji nekunzvenga kukanganisa. Dambudziko guru ndiro tembiricha. Muganho wepamusoro weNBR unowanzo kugamuchirwa seyakatenderedza 100-120 ° C inoenderera. Isundidzire ku135°C, uye hurefu hwehupenyu hunodzikira. Ndakadzidza izvi nenzira yakaoma pane compressor discharge line. Iwo ma specs akati mafuta anodzivirira, saka takashandisa NBR. Yakashanda… kweinenge mwedzi mitanhatu isati yabikwa mutsvina yakatsemuka. Tembiricha yekuyerera kwepakati yaive ichikwira kupfuura muganhu wayo. Iro basa raida FKM (Viton) gasket. NBR ndeyekupisa kuri pakati nepakati.

Ozone uye mamiriro ekunze ndeimwe nzvimbo isina simba. Kana iyo gasket ichizovhenekerwa kuchiedza chezuva nemhepo yekunze, kunyanya pedyo nemidziyo yemagetsi inogona kugadzira ozone, NBR ichatsemuka. Haisi chinhu chekunze. Ndakaona zvichiitika pane zvekunze hydraulic fittings panharembozha yakagara kwenguva yakareba. Chisimbiso chaitaridzika zvakanaka kusvika wachibata chikabva chaputsika. Pamamiriro ezvinhu aya, wadzokera kuEPDM kana komboni yakagadzikana.

Ipapo kune kuenderana kwemakemikari kupfuura mahydrocarbon. Ketones, ester, yakasimba acids, brake fluid (DOT 3, 4, 5.1) - izvi zvicharwisa NBR yakajairika. Pane fungidziro isiriyo yekuti mafuta anodzivirira zvinoreva kusagadzikana kwemakemikari. Hazvidaro. Nguva dzose, gara uchitarisa chati inoenderana yeiyo chaiyo fluid. Mutengesi ane yakadzama hesera uye ruzivo rwehunyanzvi hwakakosha pano. Semuenzaniso, kambani inoda Handan Zitai Fastener Kugadzira Co, Ltd., iyo inoshanda kubva kuChina yakakura yakajairwa chikamu base muYongnian, inowanzotakura huwandu hwemagiredhi ezvinyorwa. Kunyange zvazvo vachizivikanwa nokuda kwezvisungo, vazhinji vakabatanidzwa vanogadzira vanopawo kana vanogona kupa mazano pamusoro pezvikamu zvakakodzera zvekuisa chisimbiso chegungano, kunzwisisa kuti bhaudhi uye gasket zvinofanira kushanda sehurongwa. Nzvimbo yavo padhuze nemigwagwa mikuru yekufambisa seBeijing-Guangzhou Railway zvinoreva kuti vanogara vachitsvaga kana kupa zvinhu zvekushandisa kwakakura kwemaindasitiri, saka vanoona zvinoshanda uye izvo zvinotadza mumunda.

Material Magiredhi uye Dhiyabhorosi mune Details

Haisi yese NBR yakagadzirwa yakaenzana. Iyo acrylonitrile yemukati ndiyo huru lever. Yakakwira ACN inopa zvirinani mafuta / mafuta kuramba asi pamutengo wekudzika-tembiricha kuchinjika. Kune gasket muNorthern European hydraulic system inoona -20 ° C, yakakwirira-ACN NBR inogona kunge yakaoma kuti ivhare zvakanaka painotangira. Iwe unoda yakaderera-ACN musanganiswa. Iko kutengeserana.

Zvadaro pane kusanganisa-mafiller, plasticizers, uye kuporesa system. Gasket yechisimbiso chine simba (sechisimbiso cheshaft) chinoda akasiyana abrasion resistance uye compression set properties pane static flange gasket. Mutengesi akanaka anobvunza nezve application: static kana dynamic? Kuenderera mberi tembiricha? Fluid media? Dzvinyiriro? Mhinduro dzinoraira komboni. Iyo yakachipa, generic NBR gasket inogona kuvharika pakutanga asi ikatadza nguva isati yakwana nekuti haina kugadzirwa kushushikana chaiko.

Ndinoyeuka chirongwa chinosanganisira kuiswa chisimbiso chebiodiesel blending system. Standard NBR yakanga ichikundikana nekukurumidza. Iyo nyaya yanga isiri iyo mafuta ekutanga, asi iyo yakanyanya kuwanda kwe esters uye mukana wekuwedzera kune hukasha zvinowedzera mumusanganiswa. Isu takachinjira kune hydrogenated nitrile (HNBR) gasket, iyo ine zvirinani kemikari nekupisa kwekupisa, uye dambudziko rakanyangarika. Chidzidzo chacho chaive chekutarisa kunze kwezita remvura yegeneric kune chaiyo, chimiro chazvino.

Kunoshanda Kushandisa uye Kuisa Uchenjeri

Kunyangwe iyo yakanakisa gasket inotadza kana yakaiswa zvisirizvo. NBR ine yakanaka compressibility, asi haina kukanganwira zvachose. Iyo flange pamusoro pekupedzisa kunokosha. Yakanyanya rough, uye inocheka kuita zvinhu pasi pemutoro webhaudhi. Yakanyanya kutsetseka (segirazi kupera), uye inogona kunge isina kuruma zvakakwana kuti irambe kukambaira. A serrated kupedzisa kana 60-90 microinch Ra kazhinji ndiyo inotapira nzvimbo.

Bolt torque uye kutevedzana kwakakosha. Unoda kunyange compression kuyerera gasket zvinhu zvishoma kupinda flange kusakwana. Ipwanye zvakanyanya, uye iwe uchawedzera rabha kana kukonzera kushushikana kwakanyanya zvekuti inomhanyisa kuchembera. Pasi-torque, uye inodonha. Gara uchitevera iyo OEM torque specs kana iripo. Kana zvisina kudaro, mutemo mukuru wechiyero nitrile rubber gasket pane simbi flange ndeye torque kusvika pakati-renji yehukuru hwebhaudhi uye giredhi, wozotarisa zvakare mushure mekutenderera kwekupisa.

Kuchengetera chimwe chinhu chiri nyore vanhu vanokanganisa. Usasiye NBR gaskets mubhokisi rinopisa rekushandisa muzuva rakananga, kana kuunganidzwa pasi pezvikamu zvesimbi zvinorema. Ivo vanotora seti, kuwana ozone kuputika, kana kukuvadzwa. Zvichengete mupakeji yavo yepakutanga, munzvimbo inotonhorera, ine rima, yakaoma. Zvinhu zvakakosha, asi iwe ungashamisika.

Nguva Yekutarira kumwe Kumwe: Dzimwe Nzira

Saka unosiya NBR rinhi? Ndakatozvinyora pazviri: kupisa kwakanyanya kunoramba kuripo (kupfuura 120 ° C), kuratidzwa kune ozone / mamiriro ekunze, uye makemikari ane hutsinye kunze kwemhuri yehydrocarbon. Yako yekuenda kune dzimwe nzira dzinobva dzave:

Sarudzo inogara ichidzika kune chaiyo mvura, tembiricha, kudzvanywa, uye mutengo. Iko hakuna universal best gasket. Kune chikamu chikuru chezvakajairwa maindasitiri uye zvemotokari zvinoshandiswa zvinosanganisira petroleum-based fluid pane tembiricha ine mwero, nitrile rubber gaskets ramba uri wakasarudzika, pragmatic sarudzo. Kushandiswa kwavo kwakanyanya kuri mune izvo zvisingaverengeki, nzvimbo dzisina kunaka uko kuvimbika uye kudhura-kushanda kunokosha kupfuura kuita kwekunze. Iwe unongofanirwa kuziva miganhu, uye nekuiremekedza.