Fa'asologa o su'esu'ega o alavai ma puipuiga a'o le'i mae'a fa'apipi'i mea fa'apipi'i fa'amatalaga fa'atatau

Fa'asologa o su'esu'ega va'a ma puipuiga a'o le'i mae'a fa'apipi'i mea fa'apipi'i fa'atatau fa'amatalaga fa'amatalaga O le mamafa o le su'ega o le va'a e 1.5 taimi o le mamafa o le galuega fa'atagaina pe a o'o le valve i le 20 ℃, ma o le su'ega fa'amaufa'ailoga e 1.1 taimi o le galuega fa'ataga tele. mamafa pe a o'o le valve i le 20 ℃. Ole umi ole su'ega e le tatau ona itiiti ifo ile 5min. Ole vevela ole su'ega ole 5 ~ 40℃. (4) O le faʻamaoniga o le valve saogalemu e tatau ona tusa ai ma aiaiga o tulaga faʻale-atunuu o loʻo i ai nei ma pepa mamanu mo le faʻatulagaina o le fetuunaiga o le mamafa ma le suʻega faʻamau. E tatau ona faʻamaumau lelei, faʻamaufaʻailoga, tuʻuina atu se lipoti siaki. (1) E tatau ona asiasia le valve mo foliga vaaia lelei aʻo leʻi faʻapipiʻiina, e tatau ona faʻaogaina le tino o le valve, e tatau ona fetuutuunai le masini tatala, e le tatau ona faʻafefeteina, faʻaleagaina, faʻapipiʻi, ma e tatau ona maeʻa le faʻailoga. (2) E tatau ona faia le suʻega o le faʻamalosi o le atigi valve ma le faʻamaufaʻailoga, o le suʻega o le atigi valve ma le faʻamaufaʻailoga e tatau ona avea ma vai mama e pei o le ala, faʻataʻitaʻiga valve uamea, e le tatau ona sili atu i le 25ppm le anotusi o le chloride ion i le vai. (3) o le suʻega o le atigi suʻega o le valve o le 1.5 taimi o le mamafa faʻatagaina galue pe a oʻo i le 20 ℃ le valve, ma o le suʻega faʻamaufaʻailoga e 1.1 taimi o le mamafa galue faʻatagaina pe a oʻo i le 20 ℃ le valve. Ole umi ole su'ega e le tatau ona itiiti ifo ile 5min. Ole vevela ole su'ega ole 5 ~ 40℃. (4) O le faʻamaoniga o le valve saogalemu e tatau ona tusa ai ma aiaiga o tulaga faʻale-atunuu o loʻo i ai nei ma pepa mamanu mo le faʻatulagaina o le fetuunaiga o le mamafa ma le suʻega faʻamau. E tatau ona faʻamaumau lelei, faʻamaufaʻailoga, tuʻuina atu se lipoti siaki. Valve mea fa'atatau fa'amatalaga fa'amatalaga valve mea fa'aoga fa'amatalaga fa'amatalaga: 1, valve e masani ona fa'aaogaina mea fa'atino (1) Umea (1) U'amea lanu efuefu: pei ole HT200, HT250, ma isi, talafeagai mo PN≤16, fa'aogaina vevela i le va -10℃ ~ 100 ℃ suauʻu, lautele vai ala (vai, ausa, oloa suauu, ma isi); PN≤10, vevela galue i le va o -10 ℃ ~ 200 ℃ ausa, natura lautele o le kesi, kesi, amonia ma isi ala o faasalalauga (ammonia, ava malosi, aldehyde, eter, ketone, ester ma isi ala o faasalalauga e itiiti ifo corrosive). E le talafeagai mo le hydrochloric acid, nitric acid ma isi ala o faasalalauga. Ae e mafai ona faʻaaogaina i totonu o le sulfuric acid concentrated, aua o le acid sulfuric concentrated e mafai ona maua ai se ata faʻamamaina i luga o lona uʻamea e puipuia ai le pala o le uʻamea lafo e ala ile sulfuric acid. (2) malleable lafo uʻamea: pei o KTH350-10, KTH450-06, ma isi, talafeagai mo PN≤25, vevela galue i le va o le -10 ℃ ~ 300 ℃ i le va o le ausa, mea lautele o le kesi ma le vai, suauu ma isi ala o faasalalauga. O lona fa'afefeteina e tutusa ma le u'amea efuefu. ③ Nodular lafo uʻamea: pei o QT400-15, QT450-10, ma isi, talafeagai mo PN≤25 vevela galue i le va -10 ℃ ~ 300 ℃ ausa, kesi ma le suauu ma isi ala o faasalalauga. E malosi lona tete'e o le corrosion, e mafai ona galue i se tulaga faapitoa o le sulfuric acid, nitric acid, masima acid. Ae le tetee i fluoric acid, malosi alkali, hydrochloric acid ma ferric chloride fofo vevela corrosion. Fa'aoga e aloese ai mai le vevela fa'afuase'i, malulu fa'afuase'i, a leai o le a malepe. (4) u'amea lafo nikeli: tetee alkali nai lo u'amea lafo efuefu, nodular lafo u'amea valve; O le u'amea u'amea fa'a nikeli ose mea fa'alava lelei mo le fa'afefeteina o le sulfuric acid, fa'afefeteina o le hydrochloric acid ma le suka. (2) carbon sila Uamea carbon ua WCA, WCB ma WCC, talafeagai mo ausa, kasa e le corrosive, suauu ma oloa fesootai ma isi ala o faasalalauga i le vevela galue i le va -29 ~ 425℃. (3) u'amea u'amea O le 304 fa'asologa o u'amea u'amea e masani ona fa'aoga i le vevela galue i le va o le -196 ℃ ~ 650 ℃ ausa, kasa e le fa'aleagaina, suau'u ma oloa fa'atatau ma isi fa'asalalauga; Fa'asalalau fa'aleaga ma le vevela galue i le va o le -30 ℃ ma le 200 ℃. E sili ona lelei le tete'e o kesi, tetee atu i nitric acid ma isi oxidizing ala o faasalalauga, ae faapea foi alkali, vai, masima, organic acid ma isi organic tuufaatasiga corrosion. Ae e le tetee i le sulfuric acid, hydrochloric acid ma isi non-oxidizing acid corrosion, e le mafai foi ona tetee i le faamago o le hydrogen chloride, oxidizing chloride ma le oxalic acid, lactic acid ma isi meaola. ② I luga o le faʻavae o le 304 ma le 2% ~ 3% molybdenum 316 faʻasologa uʻamea uʻamea, o lona teteʻe faʻamaʻi e sili atu nai lo le 304 faʻasologa uʻamea uʻamea, e sili atu nai lo le chromium nickel stainless steel i le non-oxidizing acid ma vevela vevela, chloride corrosion tetee. nai lo chromium nickel uamea stainless, corrosion tetee e lelei. O le 321, 347 fa'asologa uamea u'amea o lo'o i ai le titanium po'o le niobium e malosi le tete'e atu i le pala. ④ O loʻo i ai le chromium maualuga, maualuga nickel 904L faʻasologa uʻamea uʻamea, o lona teteʻe faʻamaʻi e maualuga atu nai lo le uʻamea masani masani, e mafai ona faʻaaogaina e taulimaina ai le sulfuric acid, phosphoric acid, vailaʻau fefiloi, sulfite, organic acid, alkali, salt solution, hydrogen sulfide, ma isi, ma e mafai foʻi ona faʻaaogaina i nisi faʻalavelave o taimi maualuga o le vevela. Ae le tetee i le concentrated po o le vevela hydrochloric acid, fluorine susu, chlorine, bromine, iodine, aqua regia corrosion. (4) apamemea uʻamea apamemea sili ona talafeagai mo PN≤25, faagaoioia vevela i le va o le -40 ℃ ~ 180 ℃ okesene, vai paipa alavai, e lelei le corrosion tetee i le vai, suasami, ituaiga o vaifofo masima, mea organic. E lelei le corrosion teteʻe i sulfuric acid, phosphoric acid, acetic acid ma dilute hydrochloric acid e aunoa ma le okesene po o oxidant, ma e lelei le tetee atu i alkali. Ae e le mafai ona tetee atu i le corrosion o nitric acid, concentrated sulfuric acid ma isi oxidizing acids, ma e le mafai ona tetee atu i le pala o uʻamea uʻamea, sulfur ma sulfide. Aloese mai le fa'afeso'ota'i ma le ammonia, lea e mafai ona mafua ai le malepelepe o le kopa ma le apamemea. E tatau ona gauai atu i le filifilia o le u'amea apamemea, o lona teteʻe o le corrosion ei ai se eseesega. (5) Aluminum u'amea Aluminum u'amea e lelei fa'a'ele'ele tete'e i malosi oxidizing fa'atumauina nitric acid ma mafai ona tatalia acids organic ma solvents. Ae i le faʻaitiitia o le ala, malosi malosi, malosi faʻavae faʻasolosolo faʻamalosi. O le sili atu o le alumini mama, o le sili atu lea e tetee atu ai i le pala, ae o lona malosi e faʻaitiitia ma e mafai ona faʻaaogaina mo vaʻa maualalo maualalo poʻo le vaʻa. (6) Titanium alloy Titanium alloy e sili ona talafeagai mo PN≤25, faagaoioia vevela i le va -30 ℃ ~ 316 ℃ suasami, chloride, oxidizing acid, organic acid, alkali ma isi ala o faasalalauga. O le titanium o se u'amea malosi ma e mafai ona fausia se ata fa'ama'i fa'ama'i lelei i le vevela o le potu. E mafai ona suasami, chloride eseese ma hypochlorite, chlorine, oxidizing acid, organic acid, alkali ma isi corrosion. Ae e le tetee atu i le sili atu mama faaitiitia acid, e pei o le sulfuric acid, hydrochloric acid corrosion, ae tetee i oxidizing acid corrosion. Titanium valve e lelei le tetee atu i le tafia o pu. Ae i le asu mumu nitric acid, chloride, methanol ma isi ala o faasalalauga o le a maua ai le pala. (7) Zirconium alloy Zirconium e iai foi i le uʻamea malosi, e mafai ona maua ai ata tifaga vavalalata, e lelei le faʻafefeteina i le nitric acid, chromic acid, alkali, molten alkali, vai masima, urea, suasami, ae le o le hydrofluoric acid, faʻapipiʻi. sulfuric acid, aqua regia corrosion, e le mafai foi ona tetee i chlorine susu ma oxidizing metal chloride corrosion. (8) Ceramics Ceramic valve ua ave i ai le faamuamua i le silicon dioxide fusion sintering, e pei o le zirconia, alumina, silicon nitride, ma isi, i le faaopoopo atu i le maualuga tele o le ofuina o le ofuina, teteʻe o le vevela, le faʻaogaina o le faʻaogaina, o loʻo i ai foi le maualuga tele o le faʻafefe. mafai, i le faaopoopo atu i le okesene fluorine acid, fluosilicic acid ma alkali tetee, e mafai ona vevela concentrated nitric acid, hydrochloric acid, aqua regia, vaifofo masima ma solvents organic e pei o le medium, e masani ona faʻaoga i le PN i le laina 6 pe itiiti. O lenei ituaiga valve e pei o le faʻaogaina o isi mea, pe a filifilia, e tatau ona mafaufau i le faʻaleagaina o isi mea. (9) palasitika fa'amalosia alava tioata O le fa'afefeteina o le FRP e eseese ma lona fa'apipi'i. Epoxy resin FRP e mafai ona faʻaaogaina i le hydrochloric acid, phosphoric acid, dilute sulfuric acid ma nisi vailaʻau faʻalaʻau; E sili atu le tete'e o le corrosion o phenolic fiber fa'amalosia palasitika. Furan FRP o loʻo i ai le malosi o le alkali, teteʻe o le acid ma le faʻamaʻiina o le pala, lea e masani ona talafeagai mo le paipa PN≤16. (10) Plastics O va'a palasitika e fa'ailoaina i le malosi o le pala, ma e o'o lava i u'amea e le mafai ona maua ni fa'amanuiaga. E masani ona faʻaoga i le PN≤6 pipeline, faʻatasi ai ma ituaiga eseese o palasitisi, o lona eseesega faʻafefete e sili. (1) Nylon, e lauiloa foi o le polyamide, o se thermoplastic, e lelei le faʻafefeteina. E mafai ona tetee atu i le pala o dilute acid, masima ma alkali, ma e lelei le corrosion tetee i hydrocarbon, ketone, eter, ester ma le suauu. Ae le tetee i le malosi malosi, oxidizing acid, phenol ma formic acid corrosion. (2) POLYvinyl chloride: polyvinyl chloride o se palasitika thermoplastic, e sili ona lelei teteʻeina corrosion. Acid, alkali, masima, mea faʻaola. E le mafai ona tetee atu i nitric acid concentrated, fuming sulfuric acid, acetic anhydride, ketone, halogenated, aromatic ma isi corrosion. (3) POLYETHYLENE: polyethylene e sili ona lelei teteʻe, e lelei le corrosion teteʻe i le hydrochloric acid, dilute sulfuric acid, hydrofluoric acid ma isi non-oxidizing acids faapea foi dilute nitric acid, alkali, salt solution ma organic solvent i le vevela o le potu. Ae e le mafai ona tetee atu i acid nitric concentrated, sulfuric acid ma isi oxidant corrosion malosi. (4) polypropylene: polypropylene o se thermoplastic, o lona tetee corrosion e tutusa ma polyethylene, sili atu nai lo polyethylene. E mafai ona tetee atu i le tele o meaola faalafua, inorganic acid, alkali, masima, ae i le concentrated nitric acid, fuming sulfuric acid, chlorsulfonic acid ma isi malosi oxidizing acid corrosion resistance e leaga. ⑤ Phenolic plastics: phenolic plastics e mafai ona tatalia le pala o le hydrochloric acid, faʻafefete sulfuric acid, phosphoric acid ma isi mea e le faʻamaʻiina, vaifofo masima. Ae le mafai ona tetee atu i le nitric acid, chromic acid ma isi malosi oxidizing acid, alkali ma nisi solvents corrosion. ⑥ Chlorinated polyether, e lauiloa foi o le polychlorinated ether, e laina, maualuga tioata o thermoplastics. E sili ona lelei le tete'eina o le pala, * e maualalo ifo i palasitika fluorine. E mafai ona concentrated sulfuric acid, concentrated nitric acid i fafo atu o ituaiga uma o acid, alkali, masima ma le tele o solvents organic corrosion, ae le tetee i le chlorine vai, fluorine, bromine corrosion. ⑦ Polytrifluorovinyl chloride: o ia ma isi palasitika fluorine, e sili ona lelei le faʻafefeteina ma isi mea totino, teteʻe faʻamaʻi laʻititi laʻititi nai lo le ptfe. O lo'o i ai le fa'afefeteina lelei i le fa'ama'i fa'ala'au, vai fa'aonanā, alkali, masima ma le tele o so'o so'o. O nisi solvents o lo'o iai halogens ma okesene e mafua ai ona fulafula i le vevela maualuga. E le mafai ona tetee atu i le maualuga o le vevela fluorine, fluoride, liusua alkali, concentrated nitric acid, manogi, fuming nitric acid, uamea alkali liusua, ma isi. , chlorine trifluoride, okesene trifluoride i le maualuga o le vevela, maualuga le tafe o le fluorine vai, toetoe lava o le pala uma o ala o faasalalauga kemikolo, o le le lelei e maua ai le tafe malulu. (11) Lining Ona o le maualalo o le malosi o le palasitika, o le tele o valve e faʻaogaina mea uʻamea e fai ai le atigi, faʻatasi ai ma palasitika, paʻu paʻu. Ole laina laina e masani ona talafeagai mo paipa PN≤16, faʻatasi ai ma mea faʻapipiʻi eseese, o lona teteʻe o le vevela, e le tutusa le faʻafefe. Lining palasitika: O le fa'afefeteina o le palasitika palasitika e tutusa ma le mea e fetaui i totonu o palasitika i luga. Ae ui i lea, pe a filifilia, e tatau ona mafaufau i le faʻafefeteina o isi mea e faʻaaogaina i palasitika laina laina. Pa'u pa'u: e vaivai le pa'u, o le tele o alatoto e fa'aogaina le pa'u pa'u e fa'aleleia ai le fa'afefeteina ma le fa'amaufa'ailogaina o le valve. O le malosi o le pa'u e matua'i fesuisuia'i ma ituaiga pa'u eseese. Ina ua uma vulcanization o le pa'u faalenatura e mafai ona tetee atu non-oxidizing acid, alkali, masima corrosion, ae le tetee i oxidants malosi, e pei o le nitric acid, chromic acid, concentrated sulfuric acid corrosion, e le mafai foi ona tetee atu i oloa suauu ma nisi organic solvents corrosion: o lea. , na faasolosolo malie ona suia le paʻu natura i le paʻu gaosia. O le NBR i le paʻu faʻapipiʻi o loʻo i ai le suauʻu lelei, ae e leʻo puipuia i le faʻamaʻi faʻamaʻi, hydrocarbon manogi, ester, ketone, eter ma isi faʻamaʻi malosi; Fluorine pa'u e sili ona tetee corrosion, e mafai ona tetee atu i ituaiga uma o acids, alkali, masima, oloa suauu, hydrocarbons, ma isi, ae o le solvent tetee e le lelei e pei o palasitika fluorine; Polyether paʻu e mafai ona faʻaaogaina i vai, suauʻu, amonia, alkali ma isi faʻasalalauga. Lining ta'ita'i: o le ta'ita'i o se u'amea malosi, ae ona o ana mea vaivai, e masani ona fa'aaogaina e pei o le ufiufi o valve fa'apitoa. O le ata o oloa pala o le ta'ita'i o se vaega puipui malosi. Ose mea ta'uta'ua e fa'asa'o ile sulfuric acid. O loʻo i ai le maualuga o le corrosion resistance i le phosphoric acid, chromic acid, carbonic acid ma le neutral solution, vai o le sami ma isi ala o faasalalauga, ae e le mafai ona tetee i le alkali ma le hydrochloric acid corrosion, ma e le talafeagai mo le galue ia latou oloa pala.