Ukukhetha iwasha ye-EPDM kufuneka igxininise kwezi zinto zintlanu

Iwasha yimpahla okanye indibaniselwano yezinto ezibotshelelwe phakathi kweziqhagamshelo ezimbini ezizimeleyo (ikakhulu iiflanges), umsebenzi wayo kukugcina isitywina phakathi kweziqhagamshelo ezimbini ngexesha lenkonzo emiselwe kwangaphambili.Iwasha kufuneka ikwazi ukutywina umphezulu odibeneyo kwaye iqinisekise ukuba indawo yokutywina ayinamanzi kwaye ayigqwali, kwaye inokumelana neziphumo zobushushu kunye noxinzelelo.Iiwasha ngokubanzi ziquka izihlanganisi (ezifana neeflange), iiwasha, kunye nezibophelelo (ezifana neiibholitikwayeamandongomane). Ngoko ke, xa umisela ukusebenza kokutywinwa kwe-flange ethile, yonke i-flange yokudibanisa isakhiwo kufuneka ithathelwe ingqalelo njengenkqubo. Ukusebenza okuqhelekileyo okanye ukungaphumeleli kwe-washer akuxhomekanga kuphela ekusebenzeni kwe-washer eyenzelwe yona ngokwayo, kodwa kunye nokuqina kunye nokuguqulwa kwenkqubo, ukukhwabanisa kunye nokuhambelana kwendawo edibeneyo, kunye nobukhulu kunye nokufana komthwalo wokukhawuleza.

Izinto ezintlanu zoKhetho lweShim:

1.ubushushu:

Ukongeza kubushushu obuphezulu kunye nobuncinci bokusebenza obunokunyamezela kwixesha elifutshane, ubushushu obuvumelekileyo obuqhubekayo bufanele buqwalaselwe. Izinto zokuhlamba kufuneka zikwazi ukuxhathisa i-creep ukunciphisa ukuphumla koxinzelelo lwe-washer, ukwenzela ukuba kuqinisekiswe ukutywinwa kwayo phantsi kweemeko zokusebenza. Uninzi lwezixhobo zokuhlamba ziya kuba nokunyuka okubukhali njengoko ubushushu bunyuka. Ke ngoko, isalathisi esibalulekileyo somgangatho wewasha kukusebenza kokuphumla kwe-washer kwiqondo elithile lobushushu.

2.isicelo:

Ibhekisa ikakhulu kulwazi lwesixokelelwano soqhagamshelo apho iwasha ibekwe khona, kunye nesixhobo sokuhlamba esifanelekileyo kunye nohlobo kufuneka zikhethwe ngokusekelwe kwizinto zeflange, uhlobo lomphezulu wokutywina weflange, uburhabaxa beflange. iflange, kunye nolwazi lwebholithi. Iiflange ezingezizo isinyithi kufuneka zikhethe ii-gaskets ezineemfuno zamandla okuqina asezantsi ngokwentelekiso, kungenjalo kunokubakho iimeko apho i-gasket ingekaxinzelelwanga kwaye i-flange iye yatyunyuzwa ngexesha lenkqubo yokuqinisa i-flange.

3.phakathi:

I-washer kufuneka ingathinteki kwindawo yokutywina kuzo zonke iimeko zokusebenza, kubandakanywa ukumelana nokushisa kwe-oxidation ephezulu, ukuxhathisa ukubola kweekhemikhali, ukuxhathisa kwe-solvent, ukumelana nokunyamezela, njl.

4.uxinzelelo:

I-washer kufuneka ikwazi ukumelana noxinzelelo oluphezulu, olunokuba luxinzelelo lovavanyo, olunokuba ngu-1.25 ukuya ku-1.5 amaxesha oxinzelelo oluqhelekileyo lokusebenza. Kwii-gaskets ezingezizo ezentsimbi, uxinzelelo lwazo oluphezulu lukwanxulumene nobushushu obuphezulu bokusebenza. Ngesiqhelo, ixabiso lelona qondo lobushushu liphezulu liphindaphindwe ngolona xinzelelo luphezulu (okt ixabiso lePxT) linexabiso lomda. Ke ngoko, xa ukhetha uxinzelelo lwabo olukhulu lokusebenza, kuyafuneka ukuba uthathele ingqalelo elona xabiso liphezulu lePxT elinokumelana ne-gasket.

5.ubungakanani:

Uninzi olunga-iiwasha zamaphepha esinyithi, iiwasha ezibhityileyo nazo zinamandla amakhulu okumelana nokuphumla koxinzelelo. Ngenxa yendawo encinci yoqhagamshelwano phakathi kwecala langaphakathi lewasha ebhityileyo kunye nephakathi, ukuvuza ecaleni komzimba wokuhlamba kuyancipha, kwaye kule meko, amandla okuvuthela athwalwa yiwasha nawo amancinci, okwenza kube nzima ukuba iwasha ivuthelwe ngaphandle.