Ukukhetha impahla efanele yegasket kungenye yezinqumo ezibaluleke kakhulu injiniya azozithatha lapho eklama isistimu yokuvala, ngoba i-elastomer engalungile ingaholela ekwehlulekeni ngaphambi kwesikhathi, ukuma okungahleliwe, kanye nezingozi ezibizayo zokuphepha. Ama-elastomer amathathu asetshenziswa kakhulu kwezimboni kuma-gasket yi-EPDM (ethylene propylene diene monomer), i-FKM (fluoroelastomer), ne-NBR (nitrile butadiene rubber), ngalinye linikeza iphrofayili yokusebenza ehluke ngokuphelele. I-FKM igqama njengokukhetha okuphezulu kwezindawo ezishisayo kanye namakhemikhali anolaka, inikeza ukumelana okukhethekile nokushisa, i-oxidation, kanye nohlu olubanzi loketshezi lwezimboni. I-EPDM, ngokuphambene, igqama emanzini, umusi, nasezimeni zezulu, okwenza kube impahla eyinhloko yezinhlelo ze-HVAC, izimboni zokuhlanza amanzi, nemisebenzi yokuvala yangaphandle. I-NBR inikeza ukumelana okuhle kakhulu namafutha, uphethiloli, namafutha okugcoba ngentengo ethengekayo kakhulu, yingakho ibusa ezinhlelweni zikaphethiloli zezimoto nasembonini kaphethiloli. Wonke ama-gasket akhiqizwa yi-Varicpand International enziwa ngokunemba okuphezulu ngezilinganiso eziqinile, eqinisekisa ukusebenza kokuvala okungavuzi noma yimuphi i-elastomer ekhethiwe, futhi ithimba lethu lobunjiniyela lingakuqondisa ekukhetheni impahla ekahle yemidiya yakho yokuqhubekisela ethile.

Ukusebenza kwanoma yikuphi ukuxhumana kwe-flange, igobolondo lepompo, noma umhlangano we-valve kuncike kakhulu ohlotsheni lwezinto ezisetshenziswayo ukwenza i-gasket, ngoba uphawu lokuvikela kufanele lumelane nengcindezi yokusebenza kanye nesimo samakhemikhali soketshezi olugeleza ohlelweni. I-gasket engahambisani namakhemikhali noketshezi lwenqubo izovuvukala, ithambe, iqhekeke, noma incibilike ngokuhamba kwesikhathi, ekugcineni ivumele ukuvuza okubeka engozini kokubili ukuphepha nokusebenza kahle. Ukushintshashintsha kwezinga lokushisa kwengeza enye ungqimba lobunkimbinkimbi, njengoba ama-elastomer elahlekelwa ukuguquguquka emazingeni okushisa aphansi futhi angonakala unomphela lapho echayeke ekushiseni okuqhubekayo ngaphezu kwemikhawulo yawo elinganiselwe. Ukucindezeleka kwemishini okuvela ekunyakazeni kwamapayipi, ukudlidliza, nokucindezelwa kwesikhathi eside kuphinde kunqume ukuthi iyiphi into ezogcina uphawu oluthembekile phakathi nesikhathi sokusebenza kwempahla. Ngezansi kunetafula lokuqhathanisa elifingqa izici ezibalulekile ze-EPDM, FKM, ne-NBR, linikeza onjiniyela ireferensi esheshayo yokukhetha kokuqala kwezinto ze-gasket ezimweni ezahlukahlukene zezimboni.

Leli thebula libonisa ukuthi abukho into eyodwa esetshenziswayo yokwenza ama-gasket emhlabeni wonke, yingakho kubalulekile ukuqonda kahle izimo zenqubo ngaphambi kokucacisa noma iyiphi i-elastomer. Ukuhambisana nemidiya, ububanzi bezinga lokushisa, ingcindezi yesistimu, kanye nokuchayeka ezintweni zemvelo ezifana nelanga ne-ozone konke kuba nomthelela esincomweni sokugcina. I-gasket yokushisa ephezulu efanele i-chemical reactor ibingeke ifanele nhlobo ukusetshenziswa epayipini lamanzi okuphuza, futhi i-gasket engangenwa uwoyela esetshenziswa enjinini yemoto ingahluleka ngokushesha uma ichayeka kumhwamuko oshisayo. Yingakho i-Varicpand International ikhuthaza amakhasimende ukuthi abelane ngezimo zawo zokusebenza ezigcwele, ukuze onjiniyela bethu bakwazi ukufanisa i-elastomer efanele nemidiya eqondile evalwayo.

Izindleko zihlale ziyinto enkulu okucatshangwa ngayo lapho kukhethwa izinto zokwenziwa kwamagasket, kodwa izindleko zangempela zegasket zidlula kakhulu intengo yokuthenga futhi zihlanganisa umsebenzi wokufaka, izikhathi zokulungisa, ukulahlekelwa ngenxa yokuma komsebenzi, kanye nemiphumela engaba khona yokuvuza. I-NBR iyona nketho engabizi kakhulu phakathi kwalezi zinto ezintathu, okwenza ukuthi ihehe izinhlelo eziningi lapho isabelomali siyinto ebalulekile futhi uketshezi olusetshenziswayo ngokuyinhloko lususelwa kuphethiloli. I-EPDM isesilinganisweni sentengo emaphakathi, ilinganisa ukusebenza kahle emanzini nasezintweni ezinomusi ngentengo efanele yento ngayinye ehambisana nezinhlelo eziningi ze-HVAC nezamapayipi. I-FKM ibiza kakhulu ngenxa yokumelana kwayo namakhemikhali okuphezulu, ukusebenza kahle emazingeni okushisa abanzi, nokuphila isikhathi eside, futhi ngokuvamile iba ngeyonga kakhulu ngokuhamba kwesikhathi ezinhlelweni ezinzima ngoba izikhathi zokushintshwa zinde kakhulu. Kubalulekile ukukhumbula ukuthi ukwehluleka kwegasket elingabizi emgqeni obalulekile wokukhiqiza kungabiza izinkulungwane zamadola ekulahlekelweni komkhiqizo, ngakho onjiniyela kufanele bahlole izindleko eziphelele zokuphila kwento kunokuqhathanisa nje intengo yento ngayinye. I-Varicpand International inikeza intengo eqhudelanayo kuyo yonke uhla lwamagasket e-EPDM, FKM, ne-NBR ngaphandle kokudela ikhwalithi, futhi sinikeza izaphulelo zobuningi kuma-oda amakhulu okusiza amakhasimende ukuthi alawule izabelo zawo zokuvala ngempumelelo.

EPDM iyirabha yokwenziwa eguquguqukayo, futhi umzimba wayo ogcwele uswidi unikeza ukumelana okuhle kakhulu namanzi, umusi, izinto zokuhlanza ezishisayo, ama-ketones, kanye nezinhlobonhlobo ze-polar solvents, okwenza kube enye yama-elastomers athembekile kakhulu ezindaweni ezinamanzi. Enye yezici ezivelele ze-EPDM ukumelana kwayo okumangalisayo nesimo sezulu, i-ozone, kanye nemisebe ye-ultraviolet, yingakho ihlala ivumelana nezimo futhi ingonakali ngisho nangemva kweminyaka yokuchayeka ngaphandle elangeni elinamandla. Iphinde isebenze kahle emazingeni okushisa aphansi, nezinhlelo eziningi zihlala zivumelana nezimo kuze kufike ku- -40°C, futhi imelana kakhulu ne-compression set, okusho ukuthi igcina amandla ayo okusivula isikhathi eside. Umkhawulo oyinhloko we-EPDM ukungahambisani kahle nemikhiqizo esuselwa kuphethiloli, okuhlanganisa amafutha amaminerali, uphethiloli, amagrisi, kanye nezinyibilikisi eziningi ze-hydrocarbon, futhi ukuveza i-EPDM kulezi zinto kubangela ukuvuvukala nokonakala ngokushesha. Izinto ezijwayelekile zokusetshenziswa kwama-gasket e-EPDM zihlanganisa izindawo zokuhlanza amanzi, izinhlelo zamanzi okuphuza, imigqa yomusi, ama-HVAC chillers, kanye nama-marine dock seals, lapho inhlanganisela yokumelana namanzi nokonga izindleko kuthakazeliswa kakhulu. Kumkhiqizi onjengeVaricpand International, i-EPDM ivame ukucaciselwa ama-flange gasket ajwayelekile asetshenziswa ezingqalasizinda zamanzi zomasipala ngoba iletha ukuvala okuthembekile, kwesikhathi eside ngentengo emaphakathi.

FKM, evame ukwaziwa ngamagama okuhweba aziwayo afana neViton, iyi-fluoroelastomer esebenza kahle kakhulu enikeza ukumelana okukhethekile namazinga okushisa aphakeme kanye nohlu olubanzi lwamakhemikhali anolaka, okuhlanganisa ama-asidi amaminerali, ama-hydrocarbon aliphatic noma aromatic, kanye nama-oxidizing agents amaningi. I-fluorocarbon backbone yalokhu kusebenza inikeza ukuzinza okumangalisayo kokushisa, ivumela ukusebenza okuqhubekayo emazingeni okushisa afinyelela ku-200°C kanye nokuchayeka ngezikhathi ezithile emazingeni aphezulu kakhulu ngaphandle kokulahlekelwa okukhulu kwezakhiwo zemishini. I-FKM iphinde ibonise ukumelana okuhle kakhulu ne-ozone, isimo sezulu, nokuguga, futhi igcina ukunwebeka kwayo ngisho nangemva kokuthintana isikhathi eside noketshezi olunolaka olungabhubhisa ngokushesha i-NBR noma i-EPDM. Ububi obukhulu be-FKM yizindleko zayo eziphakeme kakhulu uma kuqhathaniswa ne-EPDM ne-NBR, okusho ukuthi ngokuvamile igcinelwa izinhlelo ezibalulekile lapho ukusebenza kwayo okuphezulu kufanelekelela izindleko ezengeziwe. Ukusetshenziswa okujwayelekile kwama-gasket e-FKM kuhlanganisa izimboni zokucubungula amakhemikhali, izindawo zokuhluza uwoyela, izingxenye ze-aerospace, nezindawo ezinokushisa okuphezulu njengama-seal enjini nama-gasket e-heat exchanger. Ngenxa yokuthi i-FKM iyakwazi ukusingatha izinhlobo eziningi kakhulu zezinto zezimboni, i-Varicpand International ikhiqiza ama-gasket e-FKM ngezimo nosayizi ngokwezifiso kumakhasimende asebenza emkhakheni wamakhemikhali nawepetrochemical, iqinisekisa ukulingana okunembile nokuvikelwa okuqinisekile ekuvuzeni.

I-NBR iyi-copolymer ye-butadiene ne-acrylonitrile enokumelana okumangalisayo namafutha asuselwa kuphethiloli, uphethiloli, amafutha okugcoba, noketshezi lwe-hydraulic, okwenza kube yinto evamile yokwenza ama-gasket embonini yezimoto nekaphethiloli. Izinga le-acrylonitrile ku-NBR lithinta ngqo ukumelana kwayo namafutha namandla emishini, lapho amazinga aphezulu e-acrylonitrile enikeza ukumelana okukhulu nama-hydrocarbon anukaphunga ngezindleko zokuguquguquka emazingeni aphansi okushisa. I-NBR futhi inokumelana okuhle kakhulu nokugqokwa namandla amahle okudonsa, okusho ukuthi ihlala kahle ngaphansi kwengcindezi yemishini nokucindezelwa okuphindaphindiwe ezinhlelweni zokuvala eziguqukayo. Nokho, i-NBR ayimelani kahle ne-ozone, ukukhanya kwelanga, nokuguquka kwesimo sezulu, futhi iba brittle emazingeni aphansi okushisa, ngakho ayifanele ukusetshenziswa ngaphandle noma ezindaweni ezinamazinga aphansi kakhulu okushisa. Le nto futhi ihlaselwa ama-polar solvents, ama-brake fluids, nama-chlorinated hydrocarbons, okunciphisa ukusetshenziswa kwayo kulezo zinto ezithile. Ukusetshenziswa kwama-gasket e-NBR kuhlanganisa amaphampu kaphethiloli ezimoto, ama-carburetor seals, ama-oil filters, amapayipi okudlulisa uphethiloli, nokuvala okujwayelekile kwezimboni lapho kukhona amafutha nokugcoba, futhi izindleko zayo eziphansi ziyenza ilungele ukuvala izingxenye eziningi. Kumakhasimende afuna ukushintsha ama-gasket e-NBR ezinhlelweni zezimoto noma ze-hydraulic, i-Varicpand International ihlinzeka ngama-gasket e-NBR asikwe ngokunembile ahlangabezana nemininingwane ye-OEM futhi anikeze ukusebenza kokuvala okungaguquki nokuthembekile.

Indlela ethembekile kakhulu yokukhetha phakathi kwe-EPDM, FKM, ne-NBR ukuqala ngeshadi elinemininingwane lokuhambisana elibonisa uhlobo ngalunye lwe-elastomer ngokumelene nezinto ezithile uhlelo lwakho oluzosebenzisana nazo, ngoba ukuhambisana kwamakhemikhali kuyisihluzo sokuqala esingenakuphikiswa enqubweni yokukhetha. Emanzini, umusi, nama-asidi ancibilikisiwe noma ama-alkali, i-EPDM ngokuvamile iyona nketho etuswayo ngenxa yokumelana kwayo okuhle kakhulu nezinto ezinamanzi kanye nenani layo elithengekayo, okwenza ifaneleke kahle ezinhlelweni zamanzi zomasipala kanye nemishini ye-HVAC. Amafutha amaminerali ashisayo, uphethiloli one-aromatics, ama-asidi agxilile, namanye amakhemikhali anamandla, i-FKM inikeza ububanzi obubanzi kakhulu bokuhambisana kanye nebhanga lokushisa elibanzi kakhulu lokusebenza, okuthethelela izindleko zayo eziphezulu emigqeni ebalulekile yezinqubo. Ezintweni ezisuselwa kuphethiloli njengophethiloli, udizili, uketshezi lwe-hydraulic, namafutha enjini emazingeni okushisa ajwayelekile okusebenza, i-NBR inikeza ibhalansi engcono kakhulu yokusebenza nomnotho, okuchaza ukubusa kwayo ezinhlelweni zezimoto nezamakhemikhali. Ngaphandle kokuhambisana kwamakhemikhali, onjiniyela kumele futhi bacabangele ingcindezi yokusebenza, amazinga okushisa aphezulu naphansi, ukupheliswa kobuso be-flange, i-bolt torque, kanye nokuthi kungenzeka yini ukuthi izinto zishintshe esikhathini esizayo, konke lokhu okungathinta ukuqina kwesihlanganisi esikhathini eside. Ithimba lobunjiniyela le-Varicpand International lisebenzisa ulwazi lweminyaka eminingi lokusebenza ngezinsimbi ukuze lincome izinto zokugcina ezifanele kakhulu zohlelo ngalunye oluhlukile, futhi sihlala sijabulela ukubuyekeza izimo zakho zenqubo futhi sinikeze isincomo esenziwe ngokwezidingo zakho.

Uma isicelo sakho sibandakanya izinhlobo eziningi zemidiya noma izimo eziguquguqukayo, kungase kufanele ukuthi ucabange ngeringi eliyisipele noma idizayini ye-gasket ehlanganisayo ehlanganisa amandla ezinto ezahlukene, nakuba lokhu kwengeza ubunkimbinkimbi nezindleko. Izinga lokushisa nokucindezela kufanele njalo lihlolwe ngokuqhathaniswa nesimo sangempela sokusebenza kwesistimu, ngoba into esebenza kahle ezingeni lokushisa elijwayelekile ingase yehluleke uma ivezwa kumusi wenqubo noma uketshezi olubandayo kakhulu. Idizayini ye-flange nayo idlala indima ebalulekile, njengoba ama-flange anobuso obuphakeme, ama-flange anobuso obuyisicaba, nama-ring-type joints wona efaka imithwalo ehlukile yokucindezela ku-gasket, futhi into kufanele ikwazi ukumelana nalokho kucindezela ngaphandle kokukhipheka. Kuyafaneleka futhi ukucabangela ishejuli yokulungisa, ngoba ezinqubweni ezidinga ukuhlukaniswa njalo, into ye-gasket enokucindezela okuphansi njenge-FKM izogcina ukuqina kwayo kokuvimbela ukuvuza ezikhathini eziningi zokufaka. I-Varicpand International icabangela zonke lezi zici lapho isiza amakhasimende ekukhetheni isixazululo esifanele sokuvimbela ukuvuza, ihlanganisa ubuchwepheshe kanye nekhathalogi yemikhiqizo ebanzi ukuze iqinisekise ukufanelana okuphelele kuso sonke isicelo sezimboni.

I-Varicpand International isebenze iminyaka engaphezu kwamashumi amabili yakha idumela njengomkhiqizi othembekile wezingxenye zokuvala ezisezingeni eliphezulu, futhi umugqa wethu wemikhiqizo yama-gasket ukhombisa lokho kuzibophezela ekuhambisaneni kobunjiniyela nokwaneliseka kwamakhasimende. Sinikeza ukukhiqizwa kwama-gasket ngokwezifiso ngezinqubo zokusika nokubumba, okusho ukuthi singakhiqiza ama-gasket cishe nganoma yisiphi isimo, usayizi, ubukhulu, nobulukhuni ukuze sihambisane nemininingwane yakho ngqo. Igasket ngalinye likhiqizwa ngaphansi kwezinqubo eziqinile zokulawula ikhwalithi, futhi izikhungo zethu zinezitifiketi ze-ISO kanye nokuthobela i-RoHS ne-FDA lapho kufaneleka, kuqinisekisa ukuthi imikhiqizo yethu ihlangabezana namazinga omhlaba wonke okuphepha nawemvelo. Yonke ibhantshi lama-gasket ihlolwa ngokuqinile ukuze kuqinisekiswe ukunemba kobukhulu, ubulukhuni bento, nokusebenza kokuvala, okunikeza amakhasimende ethu ukuzethemba ukuthi iyunithi ngayinye izosebenza ngokuthembekile lapho isetshenziswa. Siyaziqhenya nangezikhathi zokulethwa ezisheshayo nokusekelwa kwamakhasimende okuphendula ngokushesha, ngakho-ke noma ngabe udinga i-prototype eyodwa noma umkhiqizo ogcwele, ithimba lethu lisebenza ngempumelelo ukuhlangabezana nezikhathi zakho. Kusukela kuma-flange gasket ajwayelekile e-EPDM ne-NBR kuya kuma-FKM gasket asikwe ngokwezifiso ezinqubweni zamakhemikhali ezidinga ukuqina, izixazululo zokuvala ze-Varicpand International zakhelwe ukugcina imishini yakho isebenza ngokuphepha nangempumelelo.

Ngenxa yokuthi ama-gasket ayizingxenye ezibalulekile ezihambisana nama-coupling ezimboni akha ingxenye enkulu yohlu lwethu lwemikhiqizo, i-Varicpand International isungule ubuchwepheshe obujulile bokuthi izinto zokuvala zisebenzisana kanjani nezinhlelo ezahlukene zokuxhuma. Onjiniyela bethu bavame ukuklama ama-gasket ahlangana kahle nama-camlock couplings, ama-Storz couplings, kanye nezinhlobonhlobo zezinto zokusebenza zezimboni, baqinisekise ukuxhumana okungavuzi kulo lonke uhlelo lokudlulisa uketshezi. Le ndlela ebanzi isho ukuthi amakhasimende ethu angathola kokubili i-coupling negasket kumkhiqizi owodwa onokwethenjelwa, okwenza kube lula ukuthenga nokuqinisekisa ukuhambisana okuphelele. Siyaqonda izimo zokusebenza lapho imikhiqizo yethu isebenza khona, kusukela ekucimeni umlilo nokudlulisa amanzi kuya ekucubunguleni amakhemikhali nokuphatha ukudla, futhi silungisa izincomo zethu zokuvala ngokufanele. Ukuze uthole umbono ophelele wamandla ethu okukhiqiza nezinhlelo zethu zekhwalithi, siyakumema ukuthi uhlole i-Imikhiqizo ikhasi, futhi ukuze ufunde kabanzi ngomlando wenkampani yethu, sicela uvakashele i-Ngathi ikhasi. Ungabuye ubuyekeze intuthuko yakamuva nezindatshana zobuchwepheshe ku-Izindaba ikhasi, noma xhumana nethimba lethu ngqo nge-Ukuxhumana ikhasi ukuze uthole ukubonisana kochwepheshe ngegasket.

Uma lapho ubhekene nokufaka isicelo esisha sokuvala (sealing application), indlela ephumelela kakhulu ukwakha uhlaka lwezinqumo oluhlola ngokuhlelekile yonke imingcele yokusebenza ebalulekile ngaphambi kokukhetha into (material). Qala ngokuhlonza ukwakheka kwamakhemikhali okuqondile kwemidiya, kuhlanganise nanoma yikuphi ukungcola okuncane noma izithasiselo ezingase zibe nolaka kune-khemikhali eyinhloko, ngoba ngezinye izikhathi ingxenye encane yokulandelela iba nomthelela ekukhetheni into. Okulandelayo, nquma amazinga okushisa aphezulu naphansi kakhulu i-gasket ezowathola, kuhlanganise nokukhuphuka kwesikhashana ngesikhathi sokuqalisa, ukuvala, noma ukuphazamiseka kwenqubo, futhi qinisekisa ukuthi i-elastomer ekhethiwe ingasinda kulokho kuphakama nokuphansi. Bese uhlola ingcindezi yesistimu kanye nemvelo yokujikeleza kwemithwalo yengcindezi, ngoba izinsiza ezinengcindezi ephezulu nejikelezayo zidinga izinto ezinamandla amakhulu okudonsa (tensile strength) nokuncipha okuncane kokucindezelwa (compression set). Ekugcineni, cabangela izimo zemvelo ezingaphandle kwesistimu, kuhlanganise nokuchayeka elangeni, i-ozone, umswakama, namakhemikhali okungase konakalise i-gasket ngaphandle, futhi ubheke izidingo zokulawula zokudla, amanzi okuphuza, noma izicelo zemithi. Ngokusebenzisa lolu hlelo ngendlela ehlelekile, onjiniyela banganciphisa izinketho zibe into eyodwa noma ezimbili ezingaba khona bese beqinisekisa ukukhetha kwabo ngemininingwane yezobuchwepheshe yomkhiqizi. I-Varicpand International isekela le nqubo ngenkuthalo ngokuhlinzeka ngamashidi emininingwane yezinto (material data sheets) nesiqondiso sokusebenzisa, ukuze amakhasimende aqiniseke ekukhetheni kwawo i-gasket kusukela ekuqaleni.

Izinga lokufakwa kwegasket libaluleke ngokufanayo nokukhetha impahla, futhi ngisho ne-FKM gasket ebiza kakhulu izovuza uma ifakwe ngendlela engafanele ebusweni be-flange elimele. Ngaphambi kokufaka, ubuso be-flange kufanele buhlanze, bube bushelelezi, futhi bungabi nemihuzuko, imigodi, noma izinsalela ze-gasket endala, futhi i-gasket entsha kufanele ibekwe maphakathi ncamashi phakathi kobuso be-flange. Amabhodi kufanele aqiniswe ngendlela yokuphambanisa (crisscross pattern) kuze kufinyelelwe ku-torque efanele, kusetshenziswa ukulandelana kwe-torque okufanele ukuze kuqinisekiswe ukucindezelwa okulinganayo kuyo yonke indawo ye-gasket. Ukuqinisa ngokweqile kuyiphutha elivamile elingachoboza i-gasket noma likhubaze i-flange, kanti ukuqinisa kancane kungaholela ekuvuzeni lapho kusetshenzwa umfutho wokusebenza, ngakho ukulandela izincomo ze-torque zomkhiqizi kubalulekile. Ukuhlolwa njalo nokushintshwa kwe-gasket ngokwesikhathi esimisiwe, kusekelwe esikhathini sokusebenza sempahla nasebukhuleni bendawo yokusebenza, kusiza ukuvimbela ukwehluleka okungalindelekile futhi kwandise impilo yohlelo lonke. I-Varicpand International inikeza isiqondiso sokufaka nokusekelwa kwezobuchwepheshe kuwo wonke amakhasimende ethu, iqinisekisa ukuthi ama-gasket asezingeni eliphezulu esiwakhiqizayo afinyelela amandla awo okusebenza ngokugcwele lapho esetshenziswa.

Amagasket e-EPDM ngokuvamile asebenza kahle ebangeni lokushisa elingaphakathi kuka--40°C kuya ku-150°C, nakuba amanye amafomula akhethekile engabhekana nokuchayeka isikhathi esifushane kuze kufike ku-175°C. Ngaphakathi kwalolu hlu, i-EPDM igcina ukuguquguquka kwayo namandla okuvala, okwenza ifanelekele amanzi, umusi, kanye nezinhlelo zangaphandle. Nokho, ukuchayeka isikhathi eside emazingeni okushisa angaphezu kuka-150°C kuzobangela ukuwohloka kancane kancane kwe-elastomer, ngakho onjiniyela kufanele baqinisekise umjikelezo wangempela wokusebenza ngaphambi kokucacisa i-EPDM yokusebenza kokushisa okuphezulu.

Yebo, ama-gasket e-FKM angasetshenziswa ezinhlelweni zomusi, nakuba i-EPDM ngokuvamile iyona inketho evame kakhulu futhi enezindleko eziphansi kakhulu zokuvala umusi. I-FKM inokumelana okuhle namanzi ashisayo nomusi wokucindezela okuphansi, futhi ububanzi bayo bokushisa obubanzi buyivumela ukuthi ibhekele imigqa yomusi esebenza kuze kufike ku-200°C. Kodwa-ke, ezinhlelweni zomusi wokucindezela okuphezulu, kungadingeka ama-FKM akhethekile noma ezinye izinto ezihlukile, ngakho ukubonisana nedatha yokuhambisana yomkhiqizi kuhlale kunconyiwe.

Ama-gasket e-NBR awavamile ukutuswa ukuthi asetshenziswe ekuthintaneni nokudla ngaphandle uma enziwe ngokukhethekile ukuze ahambisane nemithetho yezinga lokudla nezidingo ze-FDA. I-NBR ejwayelekile iqukethe ama-plasticizer nezinye izithasiselo ezingase zingaphephile ekuthintaneni ngqo nokudla, futhi ukungamelana kwezinto ne-ozone okubi kunciphisa ukufaneleka kwayo emjikelezweni wokuhlanzwa nokubulala amagciwane okuphindaphindwayo. Ezinhlelweni zokucubungula ukudla, ama-gasket e-EPDM noma e-silicone ahambisana ne-FDA ngokuvamile ayikhetho elithandwayo.

Isici esiyinhloko esinqumayo ukuthi i-media evalwayo: khetha i-EPDM emanzini, umusi, ama-asidi, ama-alkali, kanye nezinhlelo zangaphandle, bese ukhetha i-NBR kumafutha asuselwa kuphethiloli, uphethiloli, amafutha okugcoba, kanye noketshezi lwe-hydraulic. Uma uhlelo lwakho lusingatha zombili izinhlobo ze-media, kungenzeka udinge ukucabangela i-FKM noma idizayini ye-gasket ehlanganisiwe. Izinga lokushisa nezindleko nazo ziyathinta isinqumo, njengoba i-EPDM ngokuvamile inikeza ukuguquguquka okungcono kumazinga aphansi okushisa kuyilapho i-NBR ingabiza kancane emsebenzini wamafutha.

I-FKM iyi-fluoroelastomer esebenza kahle kakhulu enikeza ukumelana okuphezulu nokushisa, amakhemikhali, ne-ozone, enezinga lokushisa elifinyelela ku-200°C futhi ihambisana kahle kakhulu nezinto ezinamandla. I-NBR, ngesikhathi esifanayo, i-rubber ye-nitrile enikeza ukumelana okuhle kakhulu namafutha nophethiloli kodwa inamandla alinganiselwe okushisa nokumelana kabi nesimo sezulu. I-FKM ibiza kakhulu kune-NBR, kodwa iyisinqumo esingcono kakhulu ezinhlelweni ezinzima zamakhemikhali nezinga lokushisa eliphezulu.

Awekho amazinga okucindezela amukelwayo awodwa ama-rubber gasket, ngoba ukucindezela okuvumelekile kuncike kumathiriyeli we-gasket, ubukhulu, ukuqina, ukwakheka kwe-flange, i-bolt torque, kanye nezinga lokushisa lokusebenza. Ama-gasket e-EPDM, FKM, nama-NBR ngokuvamile angakwazi ukuphatha amazinga okucindezela kusukela kusebenzisa i-vacuum kuya kumakhulu ambalwa ama-bar, kuye ngokwakheka okuthile. Ezinhlelweni zokucindezela okuphezulu, ama-gasket aqinisiwe noma ama-metallic gasket avame ukudingeka, futhi onjiniyela kufanele babheke amazinga okucindezela nezinga lokushisa omkhiqizi ukuze bathole imininingwane enembile.

Impilo yokusebenza kwegasket yezimboni ihluka kakhulu ngokuya ngento eyenziwe ngayo, izimo zokusebenza, ukuhambelana nemidiya, kanye nekhwalithi yokufakwa. I-FKM gasket ekhethwe kahle futhi ifakwe ngendlela efanele emsebenzini wamakhemikhali ongenabungozi ingahlala iminyaka eminingi, kanti i-NBR gasket engafanelani kahle endaweni eshisayo ene-ozone eningi ingase yehluleke phakathi nezinyanga. Izinhlelo zokuhlola ezijwayelekile ezibheka ukuvuza, ukuqina, ukuqhekeka, noma ukuvuvukala ziyindlela engcono kakhulu yokunquma isikhathi esifanele sokushintsha noma iyiphi igasket.

Yebo, i-Varicpand International igxile ekwenzeni ama-gasket ngokwezifiso, futhi singakwazi ukukhiqiza ama-gasket anoma yisiphi isimo noma usayizi sisebenzisa izinqubo zokusika noma zokubumba. Onjiniyela bethu bazosebenzisana nemidwebo yakho, izilinganiso, noma amasampula ukuze bakhe ama-gasket anembile afana ncamashi nezidingo zakho, kufaka phakathi ubukhulu obungokwezifiso, i-durometer, kanye nokwakheka kwezinto. Sikunikeza namanani amaningi okuthenga ngobuningi emikhiqizweni engokwezifiso, okwenza kube nokonga ukuthola ama-gasket akhethekile kumkhiqizi owodwa.

Cha, i-EPDM ayimelani namafutha asuselwa kuphethiloli, uphethiloli, amafutha okugcoba, noma ama-hydrocarbon solvents amaningi, futhi ukuchayeka kulezi zinto kuzokwenza i-elastomer ivuvuke, ithambe, futhi ekugcineni yehluleke. Lokhu kungumkhawulo obaluleke kakhulu we-EPDM, futhi onjiniyela kumele bagweme ukusebenzisa ama-gasket e-EPDM kunoma yisiphi isicelo esihilela imikhiqizo kaphethiloli. Emsebenzini wamafutha nophethiloli, ama-gasket e-NBR noma e-FKM ayizinqumo ezifanele kuye ngezinga lokushisa nokuqina kwamakhemikhali.

Intengo yama-gasket e-FKM ithonywa ukuhlanganiswa okuthile kwe-FKM, usayizi kanye nokujiya kwe-gasket, inani eli-odiwe, kanye nendlela yokukhiqiza, lapho ama-gasket akhiqizwa ngokubunjwa evame ukubiza kakhulu kunalawo asikwayo. Izinto zokusetshenziswa ezingavuthiwe ze-FKM zibiza kakhulu kune-EPDM noma i-NBR, ngakho izindleko zezinto zokusetshenziswa ziyona enquma intengo yokugcina. Uku-oda ngamanani amakhulu nokukhetha usayizi ojwayelekile kunganciphisa izindleko zeyunithi ngayinye, futhi i-Varicpand International inikeza amanani ancintisanayo ngisho noma ama-oda amancane enziwe ngokwezifiso.

Ukukhetha into yokugquma (gasket material) okuyiyo kuyisinyathelo esibalulekile ekuqinisekiseni ukwethembeka, ukuphepha, nokusebenza kahle kwanoma yiluphi uhlelo lokuthutha uketshezi lwezimboni, futhi ithimba lakwaVaricpand International likulungele ukukusiza ukuthi wenze leso sinqumo ngokuqiniseka. Onjiniyela bethu baletha ulwazi olungaphezu kweminyaka engu-20 lokugquma kuyo yonke iphrojekthi, futhi silihlanganisa lolo lwazi nobubanzi obuphelele bamagasket e-EPDM, FKM, ne-NBR akhiqizwa ngokwezindinganiso eziphakeme kakhulu zamazwe ngamazwe. Noma ngabe udinga amagasket ajwayelekile e-flange esikhungweni sokuhlanza amanzi noma amagasket e-FKM asikwe ngokwezifiso kulayini wokucubungula amakhemikhali, sinamandla okukhiqiza nolwazi lobuchwepheshe ukuletha isixazululo esifanele. Siyakumema ukuthi uxhumane nathi nge-Ukuxhumana ikhasi, lapho ungathumela khona imininingwane yakho yohlelo futhi uthole isincomo somuntu siqu kanye nesilinganiso. Ukuze uthole umbono ophelele wamakhono ethu okukhiqiza kanye nohlu lwemikhiqizo, vakashela i-Imikhiqizo ikhasi noma uqale ku-Ikhaya ikhasi ukuze uhlole konke okunikezwa yi-Varicpand International. Vumela ochwepheshe bethu bokufaka izimbotshana bakusize uvikele imishini yakho, unciphise isikhathi sokuma, futhi ulungiselele izindleko zakho zokunakekela ngezixazululo ze-gasket ezenziwe ngobunyoninco.

Lo mhlahlandlela ubhalwe ithimba lonjiniyela e-Varicpand International, umkhiqizi onolwazi lweminyaka engaphezu kwengu-20 ekuxazululeni izixazululo zokuvimba izimbobo zokuhambisa uketshezi ezimbonini. Onjiniyela bethu ngokuhlanganyela baklame futhi bahlinzeka ngamagasket, ama-coupling, nezinhlelo zokuvimba izimbobo ezinkulungwaneni zezicelo emkhakheni wamanzi, amakhemikhali, uphethiloli, ukudla, nemithi. Sizibophezele ekwabelaneni ngolwazi lobuchwepheshe olusebenzayo olusiza onjiniyela nochwepheshe bokuthenga ukuthi benze izinqumo ezinolwazi, futhi siyakwamukela ithuba lokusekela iphrojekthi yakho elandelayo. Ngokuqondisa kobuchwepheshe, imininingwane ekhethekile, noma usizo ekukhetheni izinto zama-gasket, ithimba lethu liyatholakala ukunikeza izeluleko zobungcweti nesevisi esheshayo.