Kuyaziwa ukuba umonakalo wesinyithi unempembelelo enkulu kubomi bevalve, ukuthembeka kunye nobomi benkonzo.Isenzo sezinto zoomatshini kunye ne-corrosion kwi-metal kwandisa kakhulu ukunxiba okupheleleyo kwendawo yokudibanisa.Isixa esipheleleyo sokunxitywa kumphezulu we-frictional wevalve ngexesha lokusebenza.Ngexesha lokusebenza kwevalvu, iindawo ezikhuphisanayo ziyanxitywa kwaye zonakaliswe ngenxa yokunxibelelana komatshini kunye neekhemikhali okanye i-electrochemical phakathi kwesinyithi kunye nokusingqongileyo.Kwiivalvu, iimeko zemozulu zemibhobho yazo zintsonkothile, kwaye ubukho behydrogen sulfide, icarbon dioxide kunye nezinye iiasidi eziphilayo kumajelo eendaba ezifana neoyile, igesi yendalo kunye nokugcinwa kwamanzi kwandisa amandla okutshabalalisa umphezulu wesinyithi kwaye ulahlekelwe ngokukhawuleza. ukukwazi ukusebenza.

Ukubola kweekhemikhali zesinyithi kuxhomekeke kubushushu, umthwalo womatshini weendawo zokukhuhlana, iisulfides eziqulethwe kwizinto zokuthambisa, ukuzinza kokumelana ne-asidi, ixesha lokunxibelelana lendawo ephakathi, i-catalysis yesinyithi kwinkqubo ye-nitriding, isantya sokuguqulwa kwe-molecule ukuya kwisinyithi sezinto ezitshabalalisayo, njalo njalo.Ke ngoko, iindlela zevalve yesinyithi ezichasene nomhlwa (okanye imilinganiselo) kunye nokusetyenziswa kweevalvu zezinto zokwenziwa, ziya kuba sesinye sezihloko zophando lweshishini levalve yangoku.

1. Anti-corrosion of Metal Valve

Iivalve zeMetal zikhuselwe kwi-corrosion ngokuzigubungela ngepeyinti, i-pigment, i-lubricating material, njl.

Indlela ye-anticorrosion ye-Metal Valve ixhomekeke kwixesha elifunekayo lokukhusela, ukuthuthwa kunye neemeko zokugcina, iimpawu zokwakha i-valve kunye nezinto eziphathekayo, ngokuqinisekileyo, ukuqwalasela umphumo wezoqoqosho wokuphakamisa i-anticorrosion.

Kukho iindlela ezine eziphambili zokukhusela umhlwa kwiiValuvu zeMetal kunye nezinto zazo:

1.1 Ukukhulula i-volatile corrosion inhibitor kwi-vapor atmosphere (efakwe ngephepha lokuqhawula, elivuthelwe kwigumbi lemveliso, njl. njl.).

1.2 Sebenzisa izisombululo zamanzi kunye notywala obuvaliweyo.

1.3 Faka i-coating encinci ye-anticorrosive kumphezulu wevalve kunye neendawo zayo.

1.4 Faka ifilimu evaliweyo okanye ifilimu yepolymer kumphezulu wevalve kunye namalungu ayo.

2. Ukusetyenziswa kweValve yezinto eziphathekayo

Iivalve ze-Synthetic ziphezulu kuneentsimbi zetsimbi kwiimeko ezininzi ezidliwayo, okokuqala ekuxhathiseni ukubola, okwesibini kubunzima bomnatha, kwaye amandla azo axhomekeke kwimilo, ilungiselelo, kunye nenani lemicu yokuqinisa.(ngokukhona, ipesenti enkulu yefiber, kokukhona ukomelela kwe-composite.)

Kwizicelo zeValve, umxholo osisiseko wobunzima befiber ukwinqanaba le-30% -40%, kwaye ukuzinza kwayo kweekhemikhali kunqunywe ikakhulu yimpawu ze-resin noumenon zefiber ehlanganisiweyo kwimveliso yokugqibela.Kwiivalvu zokwenziwa, umzimba wepolymer oqinileyo unokuba yi-Thermoplastic (efana ne-PVC-polyvinylidene fluoride, i-PPS-poly (p-phenylene sulfide), njl. .

Iresin ye-thermosetting igcina amandla ayo kubushushu obuphezulu kuneresin ye-Thermoplastic (oko kukuthi intlaka ye-thermosetting inobushushu obuphezulu be-thermal deformation).