Eyona mathiriyeli yegasket ukuzinza? 

Xa ubuza malunga neyona nto ibalaseleyo ye-gasket ukuzinza, sele ungena kwindawo yemigodi yamabango entengiso, izinto ezishiyiweyo eziphelelwe lixesha, kunye norhwebo lwenyani lwesayensi olugcina iinjineli ebusuku. Akulula njengokukhetha ukhetho olubukeka luluhlaza; imalunga noko kusilela ngobubele, ihlala phantsi koxinzelelo lokwenyani, kwaye ayidali ingxubakaxaka enkulu yokusingqongileyo ngexesha lemveliso okanye ukulahlwa. Ndibone iiprojekthi ezininzi kakhulu apho i-gasket ezinzileyo yaba lelona khonkco libuthathaka, likhokelela ekuvuzeni, ixesha lokuphumla, kwaye ngokumangalisayo, inkunkuma eninzi. Masiyinqumle ingxolo.

Ngaphaya kweHype eluhlaza: Kuthetha ukuthini uzinzo lweGasket

Kumgca wethu womsebenzi, ukuzinza ayisosincamathelisi nje. Lubalo lomjikelo wobomi. Isixhobo sinokwenziwa kumxholo osetyenzisiweyo, kodwa ukuba iwohloka kwiinyanga ezintandathu kumgca wekhemikhali, uyitshintsha rhoqo-ayigcinwanga. Ukuzinza okwenene kulinganisa ixesha elide, ukusebenza phantsi kweemeko zokusebenza (cinga ubushushu, imidiya, uxinzelelo), kunye nefuthe lokuphela kobomi. Ndikhumbula umxhasi enyanzelisa irabha ethile ye-bio-based kumgca wamanzi ashushu. Itshekishe ibhokisi evuselelekayo, kodwa ukukhwela ibhayisekile kobushushu rhoqo kuyenze yaba brittle kwisithuba sonyaka. Sayitshintsha saza safaka umxube wemichiza owathatha ishumi leminyaka. Yiyiphi eyona nto yayizinze ngakumbi? Le uyibuyisela kalishumi, okanye le uyifake kube kanye?

Oku kusizisa kundoqo wengxaki: ukuqina yintsika yokuqala yozinzo lwe-gasket. A I-GARTKITT okuthintela ukuvuza ixesha elide kunciphisa ukukhutshwa kwezinto ezikhutshwayo, igcina indawo evaliweyo (ingaba ngamanzi, igesi, okanye inkqubo yekhemikhali), kwaye inciphisa ukusetyenziswa kobutyebi bolondolozo. Eyona gasket ezinzileyo idla ngokuba yileyo ulibale ngayo kuba isebenza nje.

Emva koko kukho unyawo lokuvelisa. Amandla kunye nemithombo efunekayo ukuvelisa imathiriyeli ekrwada kwaye iyenze ibe kwiphepha elisebenzisekayo okanye isigcwali senxeba elijikelezayo. Umzekelo, i-PTFE enyulu inomgangatho ophakamileyo wemveliso, kodwa ukungasebenzi kwayo kunye nokuphila ixesha elide kwinkonzo eyonakalisayo inokuphelisa oko ngokuhamba kwexesha. Yinxaki entsonkothileyo ngaphandle kwempendulo yobungakanani obunye.

Abarhanelwa abaQhelekileyo: Ukwehla kwezinto

Makhe sifumane ikhonkrithi. I-Compressed Non-Asbestos (CNA) Amaphepha, afana ne-fiber-reinforced aramid okanye i-cellulose blends, ngamahashe okusebenza. Bafanelekile kwinkonzo eqhelekileyo, amanzi, umphunga. I-engile yabo yokuzinza? Azinayo i-asbestos (ngokucacileyo, isiseko), kwaye amanye amabanga asebenzisa iifayibha ezihlaziyiweyo. Kodwa zilumkele iiresin zokubopha-ezinye zinokuvuza okanye zinciphise uluhlu lobushushu. Ndizisebenzisile kwiiflange zoxinzelelo oluphantsi kumanzi okupholisa ngeziphumo ezilungileyo, kodwa andiyi kubabeka kufuphi ne-solvent enamandla.

iGrafite eyandisiweyo yinto enika umdla. Okugqwesileyo kumazinga aphezulu, ukuchasana kweekhemikhali ezilungileyo kumajelo amaninzi. Ukusuka kwimbono yokuzinza, igraphite luhlobo lwekhabhoni, luninzi kakhulu. Inkqubo yokwandisa inamandla kakhulu, nangona kunjalo. Ukuphumelela kwayo okukhulu kukuphinda kusetyenziswe—kwezinye iimeko, iigasthi zegraphite ezichithiweyo zinokuphinda zisetyenzwe. Ndizibonile zisetyenziswa ngempumelelo kwiiflange zokutshintsha ubushushu kwiindawo zokucokisa, ezihlala ngokujikwa kaninzi. Kodwa zibuthathaka ngexesha lofakelo; ijiji elinye elingakhathaliyo kwaye ukrazukile, udala inkunkuma ngoko nangoko.

Izinto ezisekelwe kwi-PTFE (intombi enyulu, izaliswe, yandisiwe) yenye yeligi. I-inert yekhemikhali, uluhlu olubanzi lwetekhnoloji. Ingxoxo ezinzileyo apha ibukhali. Imveliso ye-PTFE enyulu ibandakanya ikhemistri yePFAS, eyona iflegi ebomvu yokuzingisa kokusingqongileyo. Nangona kunjalo, ukuqina kwayo akuhambelani nezinto ezithile ezidlekayo. Olona phuhliso lunika umdla ngakumbi lurisayikilishelwe i-PTFE. Ndithathe iigaskets ezenziwe kwi-PTFE scrap ehlaziyiweyo-ukwehla kokusebenza kuncinci kwizicelo ezininzi, kwaye kuphambukisa inkunkuma kwiindawo zokulahla. Linyathelo eliqinileyo eliya phambili.

Iielastomers njenge EPDM okanye iNitrile. Ukuba ufuna i-elasticity kunye nokutywinwa kwimigangatho engalinganiyo, bayakhuphisana. Ukhetho oluzinzileyo apha lubandakanya ukusebenzisa umxholo werabha osetyenzisiweyo okanye iipolymers ze-bio-sourced. Ukubanjwa? Imida yabo yemichiza kunye nobushushu ingqongqo. I-EPDM eluhlaza inokuba igqibelele kwinkqubo yamanzi okusela kodwa iya kujika ibe yi-goo kumgca weoyile. Kufuneka utshatise imidiya ngokugqibeleleyo.

Ikhadi lasendle lokuFakelo kunye noLondolozo

Nantsi inyani ehlala iphoswa kwiinkcukacha zedatha: eyona mathiriyeli izinzileyo inokwenziwa ibe yinkcitho ngofakelo olungeluhle. Iibholiti ezibhuqa ngaphezulu kokutyumza i-gasket ekungeniseni? Oko kugxininisa i-flange, kaninzi konakalisa isakhiwo sangaphakathi se-gasket, kwaye siqinisekisa ubomi obufutshane. Ukuqhuba ngaphantsi? Ukuvuza ukusuka kusuku lokuqala. Inkqubo ezinzileyo yofakelo oluchanekileyo, olulungelelanisiweyo olulandela iinkqubo ezifanelekileyo ezifana ne-ASME PCC-1. Bendikwiindawo apho bebesebenzisa i-gasket enexabiso eliphantsi, efanelekileyo kodwa baxhelele ukufakela ngezitshixo zempembelelo, ekhokelela ekuvuzeni ekuqaliseni kunye nokuvalwa ngokupheleleyo kwi-gasket kwakhona. Inkcitho yabasebenzi, ixesha lokuphumla, kunye ne-gasket echithiweyo ngoku igqithise kakhulu ixabiso lemathiriyeli yeprimiyamu efakwe ngokuchanekileyo.

Ngokufanayo, ifilosofi yokugcina ibalulekile. Ngaba i-gasket iphathwa njengento enye, into yokulahla, okanye inkqubo yenzelwe ukuchithwa ngononophelo kunye nokusetyenziswa kwakhona okunokubakho (kwiindidi ezithile ezinokuphinda zisetyenziswe njengegaskithi ezinebhatyi yentsimbi)? Kwi-retrofit yamva nje yomthengi, sitshintshe ukusuka kwi-CNA esikiweyo ukuya kwi-spiral inxeba gasket ene-graphite filler. Iindleko zokuqala zaziphezulu, kodwa ngexesha lokuguqulwa okucwangcisiweyo, bahlala bekwazi ukuphinda baphinde bafake i-gasket ekhoyo ukuba ihlolwe kwaye ifunyenwe isandi. Oko kwasindisa izinto eziphathekayo kunye nomsebenzi.

Apha kulapho ukuba nomthengisi othembekileyo osiqondayo sonke isicelo, hayi nje ukuthengisa iphepha, kubalulekile. Iqabane elinje I-Sunnian Zitai Festener Fishaner Comment Com. (https //wwww.ziitasteners.com), esekelwe kwi-hub enkulu yokuvelisa i-fastener yaseChina, ufumana oku. Abangomthengisi we-gasket nje; zisembindini wenkqubo yendalo yoshishino. Ukusondela kwabo kwiindlela ezinkulu zezothutho kuthetha ukuba babona uluhlu oluninzi lwezicelo zehlabathi lokwenyani kunye nokusilela. Xa uxoxa ngeprojekthi kunye nomvelisi onjalo, ucofa loo mava asebenzayo, akumgangatho osezantsi malunga nokuba yintoni na ebambe ebaleni, eyazisa ngokuthe ngqo ukhetho oluzinzileyo.

I-Case in Point: I-Hot Oil System Retrofit

Makhe ndihambe ngomsebenzi othile. Isityalo sasinovuza olungapheliyo kwi-300 ° C eshushu yomjikelezo we-oyile. Babesebenzisa i-aramid sheet gasket eqhelekileyo. Yasebenza mhlawumbi iinyanga ezisi-8 ukuya kwezili-12 ngaphambi kokuba iqine kwaye ilile. Ukuthontsiza rhoqo bekuyingozi yomlilo kunye ne-oyile mess, kunye nokubuyisela ixesha lokuphumla bekuxabisa.

Sayihlalutya. Iqondo lobushushu laliphezulu kumda we-binder kuloo nto i-CNA. Sicebise iinketho ezimbini: i-premium, i-CNA ephezulu yobushushu kunye nenkqubo ye-resin ezinzileyo, okanye i-graphite gasket eyandisiweyo. Igraphite yayinexabiso eliphezulu langaphambili. Saqhuba amanani: i-factoring kubomi benkonzo obulindelekileyo (i-graphite iqikelelwe iminyaka eyi-3-5 vs. I-1 ngonyaka we-premium CNA), umngcipheko oncitshisiweyo wokuvalwa okungacwangciswanga, kunye nomsebenzi ococekileyo (akukho binder ukubhaka ngaphandle), i-graphite yayiyeyona nto izinzileyo kunye neyoqoqosho ukhetho kwi-horizon ye-5 yeminyaka.

Umkhabi? Ufakelo. Kwafuneka siqeqeshe iqela labo lokunyamekela ukuphatha amaphepha egraphite athambileyo. Akukho kusika kwi-flange, ukulungelelaniswa ngononophelo, kunye nolandelelwano oluthile lokuqinisa ibholithi ye-multi-pass. Kuthathe ixesha elingakumbi kufakelo lokuqala. Kodwa yabambelela. Kwiminyaka emithathu kamva kuhlolo olucwangcisiweyo, ii-gaskets zazisekwi-spec. Olo uzinzo onokuthi ululinganise: ukuvuza kweqanda, ukutshintshwa kweqanda, inkunkuma eyiziro eveliswa kule nkqubo kwiminyaka emithathu.

Ke, yeyiphi eyona ilungileyo? Yimpendulo yomxholo

Uyabona, akukho nto ilungileyo. Eyona gasket izinzileyo yeyona ifaniswe ngokugqibeleleyo nendawo yenkonzo yayo, efakwe ngokuchanekileyo, kwaye ifunyenwe ngomjikelo wayo opheleleyo engqondweni. Ngombhobho wamanzi ophantsi koxinzelelo, i-CNA enomxholo ohlaziyiweyo ingaba yinto ephambili yokuzinza. Kwinkonzo ye-asidi enoburharha, i-PTFE ehlala ixesha elide, engasebenzi ngokwekhemikhali (okanye ingcono, i-PTFE ehlaziyiweyo) ehlala amashumi eminyaka inokuba lolona khetho lokwenyani oluluhlaza.

Ingcebiso yam? Okokuqala, chaza iiparamitha zakho zokusebenza ngokungenalusini-imidiya, ugxininiso, ubushushu, uxinzelelo, ukuhamba ngebhayisikile. Okwesibini, beka phambili ukuqina kunye nokusebenza okungavuziyo ngaphezu kwayo yonke into. Isitywina esihlala ixesha elide asiyonkcitho kangako. Okwesithathu, hlola iinketho zomxholo osetyenzisiweyo (njenge-PTFE ehlaziyiweyo okanye irabha) kwisicelo sakho-iteknoloji iya ibangcono. Ekugqibeleni, phatha ukufakela njengenxalenye yezinto eziphathekayo. Igasket egqibeleleyo etshatyalaliswe sisitshixo yinkunkuma eyi-100%.

Sisigqibo sobunjineli esisebenzayo, esimdaka, hayi ibhokisi yokukhangela. Yiyo loo nto iincoko nabavelisi abanolwazi olunzulu lwesicelo, njengabo balapha Handan Zitai Fastener, zixabiseke kakhulu. Bame eYongnian, bebona iimfuno kunye nokusilela kumashishini angenakubalwa, nto leyo ibanika imbono yepragmatic, engeyiyo ithiyori malunga nokuba zeziphi izixhobo ezizisa ukusebenza okuzinzileyo kwihlabathi lokwenyani. Olu luhlobo lokuqonda olukuhambisa ngaphaya kwee-specs zekhathalogu kunye nezisombululo ezithembekileyo, ezincitshisiweyo zokutywinwa kwenkunkuma.