Tatelano ea tlhahlobo ea li-valve le litemoso pele le ka mor'a ho kenya lisebelisoa tse sebetsang ka tlhaloso e mahareng

Tatelano ea tlhahlobo ea li-valve le mehato ea ho itšireletsa pele le ka mor'a ho kenya lisebelisoa tsa li-valve tse sebetsang tlhaloso ea mahareng Khatello ea tlhahlobo ea khetla ea valve ke linako tse 1.5 tsa khatello e kholo e amohelehang ea ho sebetsa ha valve e le 20 ℃, 'me teko ea ho tiisa ke linako tse 1.1 tsa mosebetsi o moholo o amohelehang. khatello ha valve e le 20 ℃. Nako ea teko ha ea lokela ho ba ka tlase ho 5min. Mocheso oa teko ke 5 ~ 40 ℃. (4) Netefatso ea valve ea tšireletso e tla lumellana le litokisetso tsa litekanyetso tsa hona joale tsa naha le litokomane tsa moralo bakeng sa ho beha khatello ea khatello le teko ea ho tiisa. Sephahla sa tšireletso se lokela ho tlalehoa hantle, se tiisitsoe, se fane ka tlaleho ea cheke. (1) Valve e lokela ho hlahlojoa bakeng sa boleng ba ponahalo pele e kenngoa, 'mele oa valve o lokela ho ba o tsitsitseng, mochine oa ho bula o lokela ho feto-fetoha, sekhahla sa valve ha sea lokela ho kheloha, ho holofala, ho koaheloa,' me letšoao le lokela ho ba le feletseng. (2) Teko ea khatello ea khetla ea li-valve le tlhahlobo ea ho tiisa e lokela ho etsoa, ​​tlhahlobo ea khatello ea khetla ea valve le teko ea ho tiisa e lokela ho ba metsi a hloekileng e le tlhahlobo ea valve ea tšepe e sa hloekang, e nang le chloride ion ka metsing ha ea lokela ho feta 25ppm. (3) khatello ea tlhahlobo ea khetla ea valve ke linako tse 1.5 tsa khatello e kholo e lumelletsoeng ea ho sebetsa ha valve e le 20 ℃, 'me tlhahlobo ea ho tiisa ke linako tse 1.1 tsa khatello e kholo e amohelehang ea ho sebetsa ha valve e le 20 ℃. Nako ea teko ha ea lokela ho ba ka tlase ho 5min. Mocheso oa teko ke 5 ~ 40 ℃. (4) Netefatso ea valve ea tšireletso e tla lumellana le litokisetso tsa litekanyetso tsa hona joale tsa naha le litokomane tsa moralo bakeng sa ho beha khatello ea khatello le teko ea ho tiisa. Sephahla sa tšireletso se lokela ho tlalehoa hantle, se tiisitsoe, se fane ka tlaleho ea cheke. Lisebelisoa tsa valve tse sebetsang ka mokhoa o mahareng oa tlhaloso e sebetsang tlhaloso e mahareng: 1, belofo e sebelisoang haholo ts'ebetso ea lintho tse bonahalang (1) Tšepe (1) tšepe e putsoa: joalo ka HT200, HT250, joalo-joalo, e loketse PN≤16, mocheso o sebetsang pakeng tsa -10 ℃ ~ 100 ℃ oli, mokelikeli o akaretsang oa metsi (metsi, mouoane, lihlahisoa tsa peterole, joalo-joalo); PN≤10, mocheso o sebetsang pakeng tsa -10 ℃ ~ 200 ℃ mouoane, tlhaho e akaretsang ea khase, khase, ammonia le mecha e meng ea litaba (ammonia, joala, aldehyde, ether, ketone, ester le mecha e meng e sa senyeheng). Ha e loketse hydrochloric acid, nitric acid le mecha e meng ea litaba. Empa e ka sebelisoa ho concentrated sulfuric acid, hobane concentrated sulfuric acid e ka hlahisa filimi e hloekisitsoeng holim'a tšepe ea eona ho thibela ho bola ha tšepe e entsoeng ka concentrated sulfuric acid. (2) malleable lahlela tšepe: tse kang KTH350-10, KTH450-06, joalo-joalo, loketseng bakeng sa PN≤25, ho sebetsa mocheso pakeng tsa -10 ℃ ~ 300 ℃ pakeng tsa mouoane, thepa kakaretso ea khase le mokelikeli, oli le mecha ea litaba tse ling. Ho hanyetsa ha eona ha kutu ho tšoana le tšepe e bohlooho. ③ Nodular cast iron: tse kang QT400-15, QT450-10, joalo-joalo, e loketse PN≤25 mocheso o sebetsang pakeng tsa -10 ℃ ~ 300 ℃ mouoane, khase le oli le mecha e meng ea litaba. Ho hanyetsa ha eona ho matla, ho ka sebetsa ka har'a motsoako o itseng oa sulfuric acid, nitric acid, letsoai la acid. Empa ha e hanyetsane le fluoric acid, alkali e matla, hydrochloric acid le ferric chloride e chesang tharollo ea kutu. Sebelisa ho qoba mocheso oa tšohanyetso, serame sa tšohanyetso, ho seng joalo se tla robeha. (4) nickel cast iron: alkali resistance feta grey cast iron, nodular cast iron valve; Nickel cast iron ke lisebelisoa tse loketseng tsa valve bakeng sa ho hlapolla sulfuric acid, dilute hydrochloric acid le caustic soda. (2) k'habone tšepe Carbon tšepe e na le WCA, WCB le WCC, loketseng bakeng sa mouoane, khase e sa senyang, oli le lihlahisoa tse amanang le mecha ea phatlalatso e nang le mocheso sebetsa pakeng tsa -29 ~ 425 ℃. (3) tšepe e sa hloekang Letoto la 304 la tšepe e sa hloekang ka kakaretso le sebetsa ho mocheso o sebetsang pakeng tsa -196 ℃ ~ 650 ℃ mouoane, khase e sa senyang, oli le lihlahisoa tse amanang le litaba tse ling; Mecha ea litaba e senyang e nang le mocheso o sebetsang pakeng tsa -30 ℃ le 200 ℃. E na le khanyetso e ntle ea khase, e hanyetsanang le asiti ea nitric le mecha e meng ea oxidizing, empa hape le alkali, metsi, letsoai, asiti ea organic le tse ling tsa metsoako ea manyolo. Empa ha e hanyetsane le sulfuric acid, hydrochloric acid le tse ling tse se nang oxidizing acid corrosion, hape ha e hanyetsane le ho omisa hydrogen chloride, oxidizing chloride le oxalic acid, lactic acid le tse ling tsa organic acid. ② Motheong oa 304 e nang le 2% ~ 3% molybdenum 316 letoto la tšepe e sa hloekang, khanyetso ea eona ea kutu e betere ho feta 304 letoto la tšepe e sa hloekang, e betere ho feta chromium nickel tšepe e senang oxidizing acid le acid e chesang ea organic, chloride corrosion resistance. ho feta tšepe e sa jeleng ea chromium nickel, ho hanyetsa kutu ho molemo. The 321, 347 letoto la tšepe e sa hloekang e nang le titanium kapa niobium e na le khanyetso e matla ho kutu ea intergranular. ④ E na le chromium e phahameng, nickel e phahameng 904L letoto la tšepe e sa hloekang, ho hanyetsa ha eona ho phahame ho feta tšepe e tloaelehileng e sa hloekang, e ka sebelisoa ho sebetsana le sulfuric acid, phosphoric acid, acid e tsoakiloeng, sulfite, organic acid, alkali, tharollo ea letsoai, hydrogen sulfide, joalo-joalo, 'me e ka sebelisoa maemong a mang a mocheso o phahameng. Empa ha e hanyetse ho concentrated kapa hot hydrochloric acid, fluorine e metsi, chlorine, bromine, iodine, aqua regia corrosion. (4) koporo motsoako Copper motsoako haholo-holo a loketse bakeng sa PN≤25, tshebetso mocheso pakeng -40 ℃ ~ 180 ℃ oksijene, metsi a leoatle liphaephe phala, e na le ho hanyetsa kutu e ntle ho metsi, metsi a leoatle, mefuta e fapaneng ya ditharollo letsoai, lintho tse phelang. E na le khanyetso e ntle ea corrosion ho sulfuric acid, phosphoric acid, acetic acid le dilute hydrochloric acid ntle le oksijene kapa oxidant, 'me e na le khanyetso e ntle ea alkali. Empa ha e hanyetsane le ho bola ha nitric acid, concentrated sulfuric acid le tse ling tse oxidizing acid, 'me ha e hanyetsane le ho bola ha tšepe e qhibilihisitsoeng, sebabole le sulfide. Qoba ho kopana le ammonia, e ka bakang khatello ea maikutlo ho robeha ha koporo le alloy ea koporo. Tlhokomelo e lokela ho lefshoa ho khethoa ha alloy ea koporo, ho hanyetsa ha eona ho na le phapang e itseng. (5) Aluminium alloy Aluminium alloy e na le khanyetso e ntle ea kutu ho matla a oxidizing concentrated nitric acid mme e khona ho mamella li-organic acid le solvents. Empa ka ho fokotsa mahareng, acid e matla, ho hanyetsa kutu e matla ea motheo. Ha aluminium e hloekileng haholoanyane, ho molemo hore e be khahlanong le kutu, empa matla a eona a fokotseha 'me e ka sebelisoa feela bakeng sa li-valve tsa khatello e tlaase haholo kapa li-valve linings. (6) Titanium motsoako Titanium motsoako haholo-holo a loketse bakeng sa PN≤25, tshebetso mocheso pakeng tsa -30 ℃ ~ 316 ℃ metsi a leoatle, chloride, oxidizing acid, organic acid, alkali le mecha ea litaba tse ling. Titanium ke tšepe e sebetsang 'me e ka etsa filimi ea oxide e nang le khanyetso e ntle ea ho senya mocheso oa kamore. E khona ho fana ka metsi a leoatle, chloride e fapaneng le hypochlorite, chlorine, oxidizing acid, organic acid, alkali le kutu tse ling. Empa ha e hanyetsane le acid e fokolang e hloekileng, joalo ka sulfuric acid, hydrochloric acid corrosion, empa e hanyetsa ho bola ha oxidizing acid. Titanium valve e na le khanyetso e ntle ea khoholeho ea sekoti. Empa ka mosi o mofubelu nitric acid, chloride, methanol le mecha e meng ea litaba e tla hlahisa corrosion ea khatello ea kelello. (7) Zirconium alloy Zirconium e boetse ke ea tšepe e sebetsang, e ka hlahisa filimi e haufi ea oxide, e na le khanyetso e ntle ea kutu ho nitric acid, chromic acid, alkali, alkali e qhibilihisitsoeng, metsi a letsoai, urea, metsi a leoatle, empa eseng hydrofluoric acid. sulfuric acid, aqua regia corrosion, hape ha e hanyetsane le chlorine e metsi le oxidizing metal chloride corrosion. (8) Ceramics Ceramic valve e etelletsoa pele ka silicon dioxide fusion sintering, joalo ka zirconia, alumina, silicon nitride, joalo-joalo, ntle le ho ba le khanyetso e phahameng haholo, ho hanyetsa mocheso, ts'ebetso ea insulation, e boetse e na le ts'ebetso e phahameng haholo ea kutu. bokhoni, ho phaella ho se na oksijene ea fluorine acid, fluosilicic acid le alkali manganga, e ka futhumatsa concentrated nitric acid, hydrochloric acid, aqua regia, tharollo ea letsoai le metsoako ea manyolo e kang ea mahareng, hangata e sebetsa ho PN moleng oa 6 kapa ka tlaase ho moo. Mofuta ona oa valve joalo ka ts'ebeliso ea lisebelisoa tse ling, ha o khetha, o lokela ho nahana ka ho hanyetsa kutu ha lisebelisoa tse ling. (9) Plastiki e matlafalitsoeng ka fiber ea khalase Ho hanyetsa kutu ha FRP ho fapana le sekhomaretsi sa eona. Epoxy resin FRP e ka sebelisoa ka hydrochloric acid, phosphoric acid, dilute sulfuric acid le tse ling tsa organic acid; Ho hanyetsa kutu ea li-plastiki tse matlafalitsoeng tsa phenolic fiber ho molemo. Furan FRP e na le khanyetso e ntle ea alkali, ho hanyetsa acid le ho hanyetsa ho hoholo ha kutu, eo ka kakaretso e loketseng liphaephe tsa PN≤16. (10) Plastiki Li-valve tsa polasetiki li batla li khetholloa ka ho hanyetsa ho matla ha kutu, esita le li-valve tsa tšepe li ke ke tsa ba le melemo. Ka kakaretso e sebetsa ho lipeipi tsa PN≤6, tse nang le mefuta e fapaneng ea polasetiki, phapang ea eona ea ho hanyetsa kutu e kholo. (1) Nylon, eo hape e tsejoang e le polyamide, ke thermoplastic, e na le khanyetso e ntle ea kutu. E ka hanela ho bola ha acid e hlapollang, letsoai le alkali, 'me e na le khanyetso e ntle ea kutu ho hydrocarbon, ketone, ether, ester le oli. Empa ha e hanyetsane le acid e matla, oxidizing acid, phenol le formic acid corrosion. (2) POLYvinyl chloride: polyvinyl chloride ke polasetiki ea thermoplastic, e na le khanyetso e ntle ea kutu. Acid, alkali, letsoai, lintho tse phelang. Ha e hanyetsane le asiti ea nitric e tsepamisitsoeng, fuming sulfuric acid, acetic anhydride, ketone, halogenated, monko o monate le tse ling. (3) POLYETHYLENE: polyethylene e na le ts'oaetso e ntle ea kutu, e na le khanyetso e ntle ea corrosion ho hydrochloric acid, dilute sulfuric acid, hydrofluoric acid le li-non-oxidizing acid hammoho le ho hlapolla asiti ea nitric, alkali, tharollo ea letsoai le motsoako oa tlhaho mocheso oa kamore. Empa eseng manganga ho concentrated nitric acid, sulfuric acid le tse ling tse matla oxidant kutu. (4) polypropylene: polypropylene ke thermoplastic, khanyetso ea eona ea kutu e tšoana le polyethylene, hanyenyane ho feta polyethylene. E ka mamella ka ho fetisisa organic acid, inorganic acid, alkali, letsoai, empa ho concentrated acid e nitric, fuming sulfuric acid, chlorsulfonic acid le tse ling tse matla oxidizing acid corrosion ho hanyetsa e futsanehile. ⑤ Li-plastiki tsa phenolic: li-plastiki tsa phenolic li ka mamella ho bola ha hydrochloric acid, ho hlapolla sulfuric acid, phosphoric acid le tse ling tse se nang oxidizing, tharollo ea letsoai. Empa eseng manganga ho asiti nitric, chromic acid e le tse ling tse matla oxidizing acid e, alkali le ba bang ba manyolo solvents kutu. ⑥ Polyether ea chlorinated, eo hape e tsejoang e le polychlorinated ether, e mela, e phahameng ea crystallinity ea thermoplastics. E na le khanyetso e ntle ea kutu, * e tlase ho li-plastiki tsa fluorine. E khona ho concentrated sulfuric acid, concentrated nitric acid ka ntle ho mefuta eohle ea acid, alkali, letsoai le li-solvents tse ngata, empa ha e hanyetsane le chlorine ea metsi, fluorine, bromine corrosion. ⑦ Polytrifluorovinyl chloride: eona le lipolasetiki tse ling tsa fluorine, li na le ts'ebetso e ntle haholo ea ho hanyetsa kutu le lisebelisoa tse ling, ho hanyetsa kutu ho tlase hanyane ho feta ptfe. E na le khanyetso e ntle ea kutu ho organic acid, inorganic acid, alkali, letsoai le mefuta e fapaneng ea lihlapolli tsa tlhaho. Litlhapi tse itseng tse nang le li-halogen le oksijene tse etsang hore li ruruhe ha mocheso o le holimo. Ha e hanyetsane le mocheso o phahameng oa fluorine, fluoride, alkali e qhibilihantsoeng, e nang le nitric acid, e nkhang hamonate, e fuming nitric acid, tšepe e qhibilihisitsoeng ea alkali, joalo-joalo Polytetrafluoroethylene: polytetrafluoroethylene e na le khanyetso e ntle haholo ea kutu, ho phaella ho tšepe e qhibilihisitsoeng ea lithium, potasiamo, sodium , chlorine trifluoride, trifluoride ea oksijene ka mocheso o phahameng, tekanyo e phahameng ea phallo ea fluorine ea metsi, hoo e batlang e le ho senyeha hohle ha mecha ea litaba ea lik'hemik'hale, bothata ke hore e na le phallo e batang. (11) Lesela Ka lebaka la matla a tlaase a polasetiki, li-valve tse ngata li sebelisa thepa ea tšepe ho etsa khetla, ka polasetiki, lesela la rabara. Li-valve tse nang le mela ka kakaretso li loketse liphaephe tsa PN≤16, tse nang le lisebelisoa tse fapaneng tsa lesela, ho hanyetsa mocheso oa eona, ho hanyetsa kutu ha ho tšoane. Lesela la polasetiki: Ho hanyetsa ho bola ha lesela la polasetiki ho tšoana le ha thepa e lumellanang le li-plastiki tse ka holimo. Leha ho le joalo, ha u khetha, ho hanyetsa kutu ha lisebelisoa tse ling tse sebelisoang ka li-valve tse entsoeng ka polasetiki ho lokela ho nkoa. Lesela la rabara: rabara e bonolo, kahoo li-valve tse ngata li sebelisa lesela la rabara ho ntlafatsa ho hanyetsa ha kutu le ho tiisa tšebetso ea valve. Ho hanyetsa kutu ea rabara ho fapana haholo le mefuta e fapaneng ea rabara. Ka mor'a vulcanization ea tlhaho rabara ka mamella non-oxidizing acid e, alkali, letsoai corrosion, empa ha ho manganga ho oxidants matla, tse kang acid e nitric, chromic acid, concentrated sulfuric acid corrosion, hape ha e hanyetsane le lihlahisoa tsa peterole le ba bang ba manyolo solvents kutu: , rabara ea tlhaho e ile ea nkeloa sebaka butle-butle ke rabara ea maiketsetso. NBR ka rabara ea maiketsetso e na le khanyetso e ntle ea oli, empa ha e hanyetsane le asiti ea oxidation, hydrocarbon e nkhang hamonate, ester, ketone, ether le tse ling tse matla tsa solvent corrosion; Rabara ea Fluorine e na le khanyetso e ntle ea kutu, e khona ho mamella mefuta eohle ea asiti, alkali, letsoai, lihlahisoa tsa peterole, li-hydrocarbon, joalo-joalo, empa ho hanyetsa solvent ha ho hantle joalo ka polasetiki ea fluorine; Rabara ea polyether e ka sebelisoa metsing, oli, ammonia, alkali le mecha e meng ea litaba. Lesela la lead: lead ke tšepe e sebetsang, empa ka lebaka la thepa ea eona e bonolo, hangata e sebelisoa e le lesela la li-valve tse khethehileng. Filimi ea sehlahisoa sa kutu ea loto ke lera le matla le sireletsang. Ke thepa e tsebahalang e hananang le sulfuric acid. E na le khanyetso e phahameng ea kutu ka phosphoric acid, chromic acid, carbonic acid le tharollo e sa nke lehlakore, metsi a leoatle le mecha e meng ea litaba, empa ha e hanyetsane le corrosion ea alkali le hydrochloric acid, 'me ha e tšoanelehe ho sebetsa lihlahisoa tsa bona tsa kutu.