Xa usiva i-gasket emnyama enamandla aphezulu, yintoni ethi qatha engqondweni? Abaninzi bacinga ngokukhawuleza ngombala-ongamatte okanye ngamanye amaxesha ukugqiba okumnyama okukhazimlayo-kwaye uwulinganise nokusebenza okuphezulu. Kodwa lo ngumgibe wokuqala. Umbala lunyango nje olungaphezulu, kaninzi iphosphate okanye i-oxide yokwambathisa, ngamanye amaxesha iba yi-elastomeric yokwambathisa amatywina athile. Umbuzo oqinileyo wokwenyani awukho malunga nombala obambekayo; imalunga nokuba amandla aphezulu Isixhobo esingundoqo, esidityaniswe nalo mphezulu, sinokumelana nemeko-bume ethile ephoswe kuyo. Ndibone iiprojekthi ezininzi kakhulu apho iqela lichaza i-gasket emnyama yeflange yoxinzelelo oluphezulu, ithotywe yinkangeleko eyomeleleyo, kuphela ukujongana nokusilela kwangaphambi kwexesha kuba bezigxile kubuhle kunokubekwa kwezinto kunye neemeko zenkonzo.

Undoqo Osemva Kombala

Masiyihlube kwakhona. Amandla aphezulu abhekisa kumbindi wentsimbi. Sihlala sithetha ngentsimbi yasentwasahlobo (njenge-301/304/316 engenasici), i-carbon steel, okanye ngamanye amaxesha i-alloys yethusi-nickel. Inkqubo yokwenza mnyama, njengokwalekwa kwe-zinc phosphate kwintsimbi ye-carbon, ibonelela ngokusisiseko ukuxhathisa kokuhlwa kunye nentwana yokukhuhlana komphezulu ukuze ubambe ngcono. Ayitshintshi ngomlingo into ephantsi yomgangatho kwintsebenzo ephezulu. Amandla avela kumsindo wesinyithi kunye nobukhulu. Ukongamela okuqhelekileyo kukuchaza ubukhulu ngaphandle kokuqwalasela ukuhanjiswa komthwalo. I-1.5mm ubukhulu, i-gasket ye-304SS emnyama inokukhangela inxalenye, kodwa phantsi komthwalo ophezulu we-bolt kwi-flange engalinganiyo, inokukhupha okanye inwetshwe, ilahlekelwe amandla ayo okutywina. Isigqubuthelo esimnyama sisenokuba sisenjalo, sinikela imvakalelo yobuxoki yokhuseleko ngelixa itywina sele liwile.

Ndikhumbula ityala kwi-retrofit yokutshintsha ubushushu. Umxhasi ugxininise kwi-black oxide-coated carbon steel spiral injury gasket for the superheated steam line, ecaphula ukusetyenziswa okudlulileyo okuyimpumelelo kumgca wamanzi. Ukuhamba ngebhayisikili kunye ne-chemical condensate kwinkonzo ye-steam yahlasela i-carbon steel core phantsi kwengubo. I-coating ngokwayo ibambelele, kodwa safumana i-corrosion yoxinzelelo kwi-folds yentsimbi emva kweenyanga ezisibhozo. Ukuqina komphezulu omnyama kwakuyi-herring ebomvu epheleleyo. Siye satshintshela kwinxeba le-316L eligcwele igraphite, eligqunywe mnyama, layisombulula. Sifunda ntoni? Okusingqongileyo - iqondo lobushushu, imidiya, i-pH, ukukhwela ibhayisekile ngoxinzelelo - kumisela eyona nto iphambili. Umbala uyazenzekela.

Enye i-nuance kukunyaniseka kwengubo. Ayizizo zonke iingubo ezimnyama ezilinganayo. Ixabiso eliphantsi, elibhityileyo lokugquma lephosphate lingaguga ngexesha lofakelo okanye ukusuka kwintshukumo encinci yeflange, iveze intsimbi engenanto kumhlwa. I-elastomer emnyama eyomelele ngakumbi, efana ne-fluoroelastomer, yongeza ukuxhathisa kweekhemikhali kodwa inokunciphisa ubushushu. Kufuneka uyazi into oyithengayo. Ndihlala ndibuza ababoneleli ngephepha le-coating - ngaba i-ASTM A380 ye-stainless? Ngaba ipholima yomnini? Ukuba abanako ukubonelela, loo nto iflegi ebomvu.

Uxinzelelo, Ubushushu, kunye nokucudisa

Ukuqina phantsi komthwalo apho ithiyori idibana negrinder. A i-gasket ayisiyonxalenye yokwenziwa; yinto eyenzelwe ukuba ihambe phantsi komthwalo we-bolt ukuze igcwalise ukungafezeki kwe-flange, emva koko igcine ukubuyiswa kwe-elastic ukugcina isitywina njengoko inkqubo ishushu kwaye uxinzelelo luguquguquka. Ingubo emnyama ichaphazela i-friction coefficient. Ukhuhlane oluphezulu (olubonelelwa ziingubo ezimnyama) lunokuba lulungele ukuxhathisa ukuvuthela kodwa lunokufuna itorque ephezulu yebholithi ukufezekisa ucinezelo olululo lokuqala. Ukuba i-torque ayilungiswanga, unokucinezela ngaphantsi, okukhokelela ekuvuzeni ukusuka kusuku lokuqala.

Sabalekela kule nto kumgca wokukhupha icompressor. Ukusebenzisa i-gasket entsha yentsimbi efakwe kwintsimbi emnyama yomthengisi, abafakeli basebenzisa ixabiso labo eliqhelekileyo le-torque. Uvavanyo lokuqala lwe-hydro luphumelele, kodwa ekusebenzeni, ngokukhwela ibhayisekile eshushu, siye safumana ukuvuza okuzingileyo. Emva kokuchithwa, i-gasket ibonise unyawo olungaphelelanga - i-coating ayizange idluliselwe ngokupheleleyo kwi-flange face, ebonisa ukuba ayizange icinezele ngokupheleleyo. Ingubo yayijiyile kwaye ibambelele ngakumbi kunomthengisi wangaphambili. Kuye kwafuneka ukuba singqube itorque malunga ne-15% kubungakanani obufanayo begama. Yinkcukacha encinci, kodwa yabulala ukuqina yolo fakelo sade sayiqonda.

Ubushushu ngomnye umbulali. Loo ngubo intle emnyama kwi-carbon steel gasket inokuba ilungile ukuya kuthi ga kwi-500 ° F, kodwa ngaphezu koko, inokuthoba, itshise, okanye itshise. Ndibone iingubo ezimnyama zijika zibe luthuthu oluyimpuphu kwizicelo zokushisa okuphezulu, zishiya umbindi wentsimbi eveziwe. Kwiinkonzo eziphezulu zokushisa, ukhangele iipeyinti ezikhethekileyo eziphezulu zokushisa okanye, ngokuqhelekileyo, ukwamkela ukuba i-coating iya kutshisa kwaye ixhomekeke kwi-high-temperature oxidation resistance of the core metal ngokwayo, njengokusebenzisa i-321SS okanye i-Inconel. Umnyama kule meko udla ngokuba yinto yokuqala yokuchongwa kunye nokuthintela umhlwa kwindawo yokugcina, kungekhona ekusebenzeni kwinkonzo.

Iintsilelo zeHlabathi zokwenyani kunye nento abayifundisayo

Akukho nto ifundisa njengokungaphumeleli. Ndikhumbula ibhetshi ye-black-oxide egqunywe iigaskiti zeringi ezisicaba zokwenziwa kweekhemikhali ezininzi. Izinto eziphathekayo zazilungile (316SS), ukulinganiswa koxinzelelo kwakulungile. Basilela kwiiveki nje ezimbalwa ngokufaka umhlwa phantsi kwengubo. Oyena nobangela? Iikloridi kumlambo wenkqubo. Ukugquma kweoksidi emnyama kwi-stainless, ngelixa ilungele ukuxhathisa umhlwa ngokubanzi, ngamanye amaxesha inokudala iimeko zokuqhekeka ukuba ayisetyenziswanga ngokugqibeleleyo. Iikloridi ezivaleleke kwimingxuma emincinane yolugqubuthelo ikhokelele kwimingxuma nakwimingxuma yokuhlwa kwentsimbi engaphantsi. Ukugquma ngenene kube negalelo ekusileleni. Sitshintshele kwithafa, elithafa kwaye ladlula i-316SS gasket ngaphandle kokutyabeka, kwaye ingxaki yaphela. Ngamanye amaxesha, okona kugqiba ixesha elide akupheleli kwaphela.

Enye iklasi ye-galvanic corrosion. Igasket yentsimbi egqunywe emnyama esetyenziswe phakathi kweeflange ezimbini zentsimbi. Ukwaleka kuyakrweleka ngexesha lofakelo kwimingxuma yebholiti okanye imiphetho. Ngoku une-anode encinci (i-carbon steel) echukumisa i-cathode enkulu (i-stainless), kwindawo eqhubayo. I-carbon steel idla ngokukhawuleza, idla icandelo lomthwalo we-gasket. Ingubo emnyama ibonakala ilungile ngaphezu kwe-90% yendawo, kodwa i-gasket iphazamisekile kwimida ebalulekileyo. Kungenxa yoko le nto ukuhambelana kwezinto kulinyathelo lokuqala elingaxoxisiyo, elibaluleke kakhulu kunombala womphezulu.

La mava andikhokelela ekubeni ndithandabuze ngokunzulu nayiphi na ikhathalogu edwelisa nje i-gasket emnyama njengento ephambili. Iimpawu zokwenyani - ASME B16.20, B16.21, iicerts eziphathekayo (ezifana nomvelisi othembekileyo onjengo I-Sunnian Zitai Festener Fishaner Comment Com., esekelwe kwi-hub enkulu ye-fastener ye-China ye-fastener kunye nenethiwekhi yayo eyomeleleyo ye-logistical), imilinganiselo yoxinzelelo lobushushu, kunye neenkcukacha zokugqoka - yinto ebalulekileyo. Iwebhusayithi https //wwww.ziitasteners.com ukuze badwelise iimveliso zabo, kodwa incoko yokwenyani iqala xa ucela iingxelo zovavanyo emva kwabo i-gasket emnyama izintlu.

Ukufakela - Umzuzu weNyaniso

Ukuqina kwakhona kwenziwa ngexesha lofakelo. I-gasket egqunywe ngomnyama inokuthi ichaphazeleke ngakumbi ekuphatheni umonakalo. Ukuyiwisa kumgangatho wekhonkrithi kunokuyicoca ingubo. Ukusebenzisa ibrashi yocingo ukucoca iflange endala kwaye emva koko uphumle igasket entsha kuyo inokushumeka amasuntswana abrasive kwisambatho esithambileyo. Ndihlala ndigxininisa kwizandla ezicocekileyo, ezineglavu kunye nendawo ecocekileyo yeqonga. Ukwaleka ngumgca wokuqala wokukhusela; ukuyiphula ngexesha lokufakela kufana nokupeyinta ucingo emva kokuba sele uqhekeze iinkuni.

Ukuthambisa yenye ingongoma. Ngaba kufuneka uthambise i-gasket egqunywe emnyama? Ngokuqhelekileyo, akukho. I-coating isoloko ilungiselelwe ukukhuhlana okuthile. Ukongeza i-lubricant engahambelaniyo inokwaphula i-coating okanye idale umgangatho otyibilikayo okhuthaza ukuvuthwa kwe-gasket phantsi koxinzelelo. Ubuso be-flange kufuneka bucoceke kwaye bome ngaphandle kokuba umenzi we-gasket ucebisa ngokuthe ngqo ukuchasana nokubanjwa (ngokuqhelekileyo kuphela kwiintlobo ezithile zegraphite okanye ze-PTFE). Le yenye indawo apho ukucinga ukuba zonke iigaskets ezimnyama ziyafana kukhokelela enkathazweni.

Ukubona ubungqina bokuqala boxinzelelo. Igasket elungileyo, eyomeleleyo iya kuhlala kwaye ibambe. Ngamanye amaxesha, ngohlobo olutsha, unokubona ukulila okuncinci emva koko kutywinwe njengoko isambatho sihambelana - oko kuhlala kulungile. Kodwa ukuvuza okuzingileyo kuthetha ukuba kukho into engalunganga: imathiriyeli engalunganga, ukungonelanga kwebholiti, ukugquma okonakalisiweyo, okanye imiba yobuso beflange. Awunako ukuqhubeka ujikeleza; kufuneka uxilonge.

Ke, Kuthetha Ukuthini Ukuhlala Ngokusisigxina?

Ekugqibeleni, kwi-a amandla aphezulu e-gasket emnyama, ukuqina kuthetha ukuba igcina umsebenzi wayo wokutywina wobomi obuyiliweyo benkonzo phantsi kweemeko ezichaziweyo. Ingubo emnyama iyinxalenye yaloo nto, kodwa enye kuphela. Umsebenzi wayo kukukhusela ngexesha lokugcinwa kunye nokuphatha, ukubonelela ukungqubuzana okungaguqukiyo, kunye nokubonelela ukuxhathisa umhlwa kokuqala. Ukuphakanyiswa okunzima kwenziwa ngamandla emveliso yentsimbi engundoqo, ukuxhathisa ukukhasa, kunye nokuhambelana.

Xa ndivavanya, ndiyayichitha ngengqondo: 1) Izinto ezingundoqo kwimichiza kunye ne-thermal. 2) Ukuyila (i-flat, inxeba elijikelezayo, i-jacketed) yoxinzelelo kunye nohlobo lwe-flange. 3) Uhlobo lwe-Coating yokuphatha kunye nokutywinwa kokuqala. 4) Inkqubo yokufakela. Ukuphosa nayiphi na enye kuyingozi kwinkqubo yonke. Igasket evela kumvelisi okhethekileyo kwindawo yemizi mveliso, njengeSithili saseYongnian apho Handan Zitai Fastener isebenza, ihlala inenzuzo yemveliso edibeneyo ukusuka kwintambo / isitokhwe ukuya kwimveliso egqityiweyo, oko kunokuthetha ukuhambelana okungcono kuloo nto ingundoqo - eyona nxalenye ibaluleke kakhulu.

Ekugqibeleni, musa ukulahlwa ngumbala. Cacisa iimfuno zokusebenza kuqala, emva koko ubone ukuba loluphi unyango olungaphezulu, ukuba lukhona, lungena. I-gasket ehlala ixesha elide yinto oyilibalayo emva kokufakwa kuba isebenza nje, nokuba imnyama, isilivere, okanye isinyithi esicacileyo. Umbala ngowoncedo lwethu kwindawo yokugcina impahla, hayi koomatshini. Umatshini ukhathalela kuphela itywina.