Nusiwo gblẽa nu le ame ŋu nye nu vevitɔ kekeake siwo hea ame vɛ la dometɔ ɖekavalvenugbegblẽ. Eyata levalveametakpɔkpɔ, valve anti-corrosion nye nya vevi aɖe si ŋu wòle be woabu.
Valve si wotsɔna ƒoa ʋucorrosion ƒe nɔnɔme
Atikewo ƒe xɔxlɔ̃ kple elektrikŋusẽ ƒe xɔxlɔ̃ koŋ gbɔe gawo ƒe xɔxlɔ̃ tsona, eye zi geɖe la, atikewo kple dzɔdzɔmeŋusẽ ƒe dɔwɔwɔ tẽ gbɔe ga siwo menye ga o ƒe xɔxlɔ̃ tsona.
1. Atikewo ƒe xɔxlɔ̃
Le nɔnɔme si me elektrikŋusẽ aɖeke medzɔna o me la, nusi ƒo xlãe la wɔa nu kple ga la tẽ eye wòtsrɔ̃nɛ, abe ga ƒe xɔxlɔ̃ to gas ƒuƒu si ƒe dzoxɔxɔ nu sẽ kple tsi si me elektrikŋusẽ mele o me ene.
2. Galvanic ƒe xɔxlɔ̃
Ga la le kadodo me kple elektrikŋusẽnamɔ̃a, si wɔnɛ be elektrɔnikwo sina, si wɔnɛ be elektrikŋusẽ ƒe dɔwɔwɔ, si nye nu vevitɔ si gblẽa nu le eɖokui ŋu, gblẽna le eɖokui ŋu.
Acid-base salt solution ƒe xɔxlɔ̃ si bɔ, yame ƒe xɔxlɔ̃, anyigba ƒe xɔxlɔ̃, atsiaƒu me tsi ƒe xɔxlɔ̃, nugbagbevi suewo ƒe xɔxlɔ̃, pitting corrosion kple crevice corrosion of stainless steel, kple bubuawo katã nye elektrikŋusẽ ƒe xɔxlɔ̃. Menye ɖeko elektrikŋusẽ ƒe xɔxlɔ̃ dzɔna le nu eve siwo ate ŋu awɔ akpa aɖe le atikewo dome ko o, ke ehea vovototo siwo ate ŋu adzɔ hã vɛ le vovototo si le ʋeʋẽa ƒe agbɔsɔsɔ me, oxygen si ƒo xlãe ƒe agbɔsɔsɔme ƒe vovototo, vovototo sue si le nusi ƒe wɔwɔme me, kple bubuawo ta, eye wòkpɔa xɔxlɔ̃ ƒe ŋusẽ, ale be ga si ƒe ŋutete le sue kple ɣe ƒe gbadzɛ ƒuƒu la ƒe nɔƒe bu.
Valve ƒe xɔxlɔ̃ ƒe agbɔsɔsɔme
Woate ŋu ama alesi gbegbe xɔa gblẽnae ɖe hatsotso ade me:
(1) Ete ŋu nɔa te ɖe xɔxlɔ̃ nu keŋkeŋ: xɔxlɔ̃ ƒe agbɔsɔsɔme mede 0.001 mm/ƒe o
(2) Nusi te ŋu nɔa te ɖe xɔxlɔ̃ nu ŋutɔ: xɔxlɔ̃ ƒe agbɔsɔsɔme 0.001 va ɖo 0.01 mm/ƒe
(3) Tsitretsitsi ɖe xɔxlɔ̃ ŋu: xɔxlɔ̃ ƒe agbɔsɔsɔme 0.01 va ɖo 0.1 mm/ƒe
(4) Egakpɔtɔ te ŋu nɔa te ɖe xɔxlɔ̃ nu: xɔxlɔ̃ ƒe agbɔsɔsɔme 0.1 va ɖo 1.0 mm/ƒe
(5) Tsitretsitsi ɖe xɔxlɔ̃ ŋu nyuie o: xɔxlɔ̃ ƒe agbɔsɔsɔme 1.0 va ɖo 10 mm/ƒe
(6) Mete ŋu nɔa te ɖe xɔxlɔ̃ nu o: xɔxlɔ̃ ƒe agbɔsɔsɔme lolo wu milimeta 10/ƒe
Afɔɖeɖe enyi siwo woatsɔ atsi xɔxlɔ̃ nu
1. Tia nusiwo te ŋu nɔa te ɖe xɔxlɔ̃ nu le nusi gblẽa nu le wo ŋu nu
Le ewɔwɔ ŋutɔŋutɔ me la, nusi wotsɔna ƒoa ƒui ƒe xɔxlɔ̃ sesẽ ŋutɔ, ne valvɔ-nu si wozãna le nusi wotsɔ wɔa nu ɖeka ma ke me sɔ, nusi wotsɔ wɔa nu ƒe ʋeʋẽ, dzoxɔxɔ kple nyaƒoɖeamenu to vovo, eye nusi wotsɔ wɔa nusi wotsɔ wɔa nu la ƒe xɔxlɔ̃ mesɔ o gɔ̃ hã. Le dzoxɔxɔ si le titina ƒe dzidziɖedzi ɖesiaɖe si nye 10°C me la, xɔxlɔ̃ ƒe agbɔsɔsɔme dzina ɖe edzi abe zi gbɔ zi 1~3 ene.
Nusiwo le titina kpɔa ŋusẽ gã aɖe ɖe valvɔ ƒe nu ƒe xɔxlɔ̃ dzi, abe alesi lifi la le sulphuric acid me kple agbɔsɔsɔ sue aɖe ene, xɔxlɔ̃a le sue ŋutɔ, eye ne ʋeʋẽa wu 96% la, xɔxlɔ̃a dzina ɖe edzi ŋutɔ. Kura o, carbon steel ye xɔa dzo vevie wu ne sulphuric acid ƒe agbɔsɔsɔ anɔ abe 50% ene, eye ne eƒe agbɔsɔsɔme dzi ɖe edzi wu 60% la, xɔxlɔ̃a dzi ɖena kpɔtɔna ŋutɔ. Le kpɔɖeŋu me, aluminum gblẽa nu ŋutɔ le nitric acid si me wode nu me si ƒe agbɔsɔsɔme wu 80%, gake egblẽa nu vevie le nitric acid si le titina kple esi le sue me, eye gakpo si mexɔ dzo o te ŋu nɔa te ɖe nitric acid si me wode tsii nu ŋutɔ, gake egagblẽna ɖe edzi le nitric acid si me wode nu me wu 95% me.
Le kpɔɖeŋu siwo le etame me la, woate ŋu akpɔe be ele be woatu valvɔnuwo ƒe tiatia nyuitɔ ɖe nɔnɔme tɔxɛa dzi, adzro nu vovovo siwo kpɔa ŋusẽ ɖe xɔxlɔ̃ dzi, eye woatia nuwo le mɔfiamegbalẽ siwo sɔ ɖe xɔxlɔ̃ nu.
2. Zã nusiwo menye ga o
Nusiwo menye ga o ƒe xɔxlɔ̃ ƒe tsitretsitsi nyo ŋutɔ, zi alesi dzoxɔxɔ kple nyaƒoɖeamenu si le valvɔa me ɖo nusiwo menye ga o ƒe nudidiwo gbɔ ko la, menye ɖeko wòate ŋu akpɔ xɔxlɔ̃ ƒe kuxia gbɔ ko o, ke ate ŋu axɔ ga xɔasiwo hã. Wowɔa valvɔ ƒe ŋutilã, bonnet, lining, sealing surface kple nu bubu siwo wozãna zi geɖe siwo menye ga o.
Wozãa plastikwo abe PTFE kple chlorinated polyether, kpakple dzɔdzɔme rababa, neoprene, nitrile rababa kple rababa bubuwo tsɔ wɔa valvɔ ƒe xɔmenuwo, eye wotsɔa gayibɔ kple carbon steel wɔa valvɔa ƒe ŋutilã ƒe bonnet ƒe akpa vevitɔ. Menye ɖeko wòkpɔa egbɔ be ʋuƒoa ƒe ŋusẽ le eŋu ko o, ke ekpɔa egbɔ hã be ʋuƒoa mexɔ dzo o.
Fifia la, wozãa plastik geɖe abe nylon kple PTFE ene, eye wozãa dzɔdzɔme rababa kple rababa si wowɔ tsɔ wɔa nutrenu vovovowo kple nutrenu ƒe asigɛwo, siwo wozãna ɖe ʋuƒo vovovowo dzi. Menye ɖeko nu siawo siwo menye ga o siwo wozãna abe nutrenu ene la te ŋu nɔa te ɖe xɔxlɔ̃ nu nyuie ko o, ke woƒe nutrenu ƒe dɔwɔwɔ hã nyo, si sɔ vevietɔ na zazã le nyadzɔdzɔgblɔmɔ̃ siwo me nu suesuesuewo le me. Nyateƒee, womesẽna boo o eye womete ŋu nɔa te ɖe dzoxɔxɔ nu o, eye alesi woate ŋu azã woe hã mesɔ gbɔ o.
3. Ga ƒe anyigba dzi dɔwɔwɔ
(1) Valve ƒe kadodo: Zi geɖe la, wotsɔa galvanizing, chrome plating, kple oxidation (blɔ) wɔa dɔ na valve connection snail be wòana ŋutete si le esi be wòatsi tre ɖe yame kple titina ƒe xɔxlɔ̃ ŋu nanyo ɖe edzi. Tsɔ kpe ɖe mɔnu siwo míeyɔ ɖe etame ŋu la, wotsɔa nusiwo wotsɔ blaa nu bubuwo hã abe phosphating ene wɔa dɔ le nɔnɔmea nu.
(2) Nutrenu le anyigba kple akpa siwo wotu siwo ƒe didime le sue: wozãa anyigbadzinuwɔnawo abe nitriding kple boronizing ene tsɔ naa eƒe xɔxlɔ̃ kple eƒe vuvu nyona ɖe edzi.
(3) Stem anti-corrosion: nitriding, boronization, chrome plating, nickel plating kple bubuwo yame atikewɔwɔ mɔnuwo wozãna geɖe tsɔ nyoa eƒe xɔxlɔ̃ tsitretsitsi, xɔxlɔ̃ tsitretsitsi kple abrasion tsitretsitsi.
Ele be anyigbadzidɔdamɔnu vovovowo nasɔ na ke ƒe nu vovovowo kple dɔwɔƒe ƒe nɔnɔmewo, le yame, tsi ƒe dzoxɔxɔ medium kple asbestos packing contact stem, ate ŋu azã chrome plating sesẽ, gas nitriding ƒe ɖoɖo (mele be gakpo si mexɔ dzo o nazã ion nitriding ƒe ɖoɖo o): le hydrogen sulfide yamenutome nɔnɔme me zãa electroplating high phosphorus nickel coating na ametakpɔkpɔ ƒe dɔwɔwɔ nyuie wu; 38CrMOAIA ate ŋu anye esi te ŋu nɔa te ɖe xɔxlɔ̃ nu hã to ion kple gas nitriding me, gake chrome sesẽ ƒe nutsyɔnu mesɔ na zazã o; 2Cr13 ate ŋu anɔ te ɖe amonia ƒe xɔxlɔ̃ nu le etutu kple dzoxɔxɔ vɔ megbe, eye carbon gakpo si zãa gas nitriding hã ate ŋu anɔ te ɖe ammonia ƒe xɔxlɔ̃ nu, esime phosphorus-nickel plating layers katã mete ŋu nɔa te ɖe ammonia ƒe xɔxlɔ̃ nu o, eye gas nitriding 38CrMOAIA nu la te ŋu nɔa te ɖe xɔxlɔ̃ nu nyuie ŋutɔ eye wòwɔa dɔ bliboe, eye wozãnɛ zi geɖe tsɔ wɔa valve stems.
(4) Valvɔ ƒe ŋutilã kple asikeke si ƒe lolome le sue: Zi geɖe la, wotsɔa chrome ƒoa eŋu hã be wòate ŋu anɔ te ɖe xɔxlɔ̃ nu nyuie wu eye wòaɖo atsyɔ̃ na valvɔa.
4. Dzoxɔxɔ ƒe atike sisi
Dzoxɔxɔ ƒe atike sisi nye mɔnu ƒomevi aɖe si wozãna tsɔ dzraa nusiwo wotsɔ blaa nu ɖo, eye wòva zu mɔ̃ɖaŋununya yeye siwo wozãna tsɔ kpɔa nuwo ƒe anyigba ta la dometɔ ɖeka. Enye anyigbadziŋusẽdodo ƒe mɔnu si zãa dzoxɔxɔtsoƒe siwo ƒe ŋusẽ lolo ŋutɔ (gas dzobibi, elektrik akasanu, plasma akasanu, elektrik dzoxɔxɔ, gas ƒe wowó, kple bubuawo) tsɔ doa dzo helɔa ga alo nusiwo menye ga o, eye wotsɔa wo ƒua gbe ɖe gɔmedzenu si ŋu wowɔ atike ɖo do ŋgɔ la dzi le atomization ƒe nɔnɔme me be woawɔ atike si wotsɔ ƒua gbe, alo doa dzo na gɔmeɖoanyia le ɣeyiɣi ma ke me, ale be nusi wotsɔ blae la gafa ɖe edzi substrate la be wòawɔ anyigbadzi ŋusẽdodo ƒe ɖoɖo si nye spray welding layer.
Woateŋu atsyɔ ga akpa gãtɔ kple woƒe kpe gbadzɛwo, ga oxide ceramics, cermet composites kple hard metal compounds ɖe ga alo esiwo menye ga o ƒe anyigba dzi to dzoxɔxɔ ƒe tsilele mɔnu ɖeka alo geɖe dzi, si ateŋu ana anyigba ƒe xɔxlɔ̃ ƒe tsitretsitsi, vuvu ƒe tsitretsitsi, dzoxɔxɔ gã ƒe tsitretsitsi kple nɔnɔme bubuwo nanyo ɖe edzi, eye wòana dɔwɔwɔ ƒe agbenɔƒe nadidi ɖe edzi. Dzoxɔxɔ si wotsɔna ƒua gbe etɔxɛ dɔwɔwɔ ƒe nutsyɔnu, kple dzoxɔxɔnutsitike, nusiwo xea mɔ na dzoxɔxɔ (alo elektrikŋusẽ si mesɔ o), nutrenu si woate ŋu atutu, amisisi na eɖokui, dzoxɔxɔ ƒe keklẽ, elektrikŋusẽ ƒe ametakpɔnu kple nɔnɔme tɔxɛ bubuwo, dzoxɔxɔ ƒe atike sisi zazã ate ŋu adzra akpa aɖewo ɖo.
5. Tsɔ amadede ƒu gbe
Nutsyɔtsyɔ nye mɔnu si wozãna geɖe tsɔ tsia xɔxlɔ̃ nu, eye wònye nusi hiã vevie si tsia xɔxlɔ̃ nu kple dzesidenu si wotsɔ dea dzesi valvɔnuwo. Nutsyɔtsyɔ hã nye nusi menye ga o, si zi geɖe nyea aŋɔ si wowɔ, rababa ƒe ʋeʋẽ, amagbemi, ami, kple bubuawo, si tsyɔa ga la ƒe anyime, ɖea nusi wotsɔ wɔa nusi le eme kple yamenutome ɖe vovo, eye wòɖoa taɖodzinu si nye be woatsi xɔdzo nu gbɔ.
Wozãa nusiwo wotsɔna tsyɔa nu dzi koŋ le tsi, dzetsi, atsiaƒu me tsi, yamenutome kple nuto bubu siwo mexɔa dzo fũ o me. Zi geɖe la, wotsɔa amadede si tsia dzoxɔxɔ nu dea valvɔa ƒe do ememetɔ be tsi, ya kple nu bubuwo nagagblẽ valvɔa o
6. Tsɔ atike siwo xea mɔ na xɔxlɔ̃ kpe ɖe eŋu
Mɔnu si dzi nusiwo xea mɔ na xɔxlɔ̃ kpɔa xɔdzo dzie nye be edoa batri la ƒe polarization ɖe ŋgɔ. Wozãa nusiwo xea mɔ na xɔxlɔ̃ koŋ le nyadzɔdzɔgblɔmɔnuwo kple nusiwo wotsɔ yɔa nu me. Ne wotsɔ nusiwo xea mɔ na xɔxlɔ̃ kpe ɖe nusi wotsɔ wɔa dɔe ŋu ate ŋu ana dɔwɔnuwo kple ʋuƒoawo ƒe xɔxlɔ̃ nagbɔdzɔ, abe chromium-nickel gakpo si mexɔ dzo o le sulphuric acid si me oxygen mele o me, si ƒe ʋeʋẽ lilili ƒe didime le dzotɔtɔ ƒe nɔnɔme me, xɔxlɔ̃ nu sẽ wu, gake ne wotsɔ akɔbli sulfate alo nitric acid kple oxidants bubuwo kpe ɖe eŋu vie la, ate ŋu ana gakpo si mexɔ dzo o la natrɔ azu nɔnɔme si me mekɔ o, si nye ametakpɔnu ƒe anyime film be woatsɔ axe mɔ ɖe nusi wotsɔ wɔa nuɖuɖua ƒe ʋuʋu nu, le hydrochloric acid me, ne wotsɔ oxidant sue aɖe kpe ɖe eŋu la, woate ŋu aɖe titanium ƒe xɔxlɔ̃ dzi akpɔtɔ.
Wozãa valve ƒe nyaƒoɖeamenu dodokpɔ zi geɖe abe nusi woatsɔ awɔ nyaƒoɖeamenu dodokpɔ ene, si le bɔbɔe be wòahe xɔxlɔ̃ vɛ le...valve, eye ne wotsɔ sodium nitrite sue aɖe de tsia me la, ate ŋu axe mɔ na tsi ƒe xɔxlɔ̃. Chloride le asbestos-babla me, si gblẽa nu le valvɔa ƒe ke ŋu ŋutɔ, eye woate ŋu aɖe chloride ƒe agbɔsɔsɔ dzi akpɔtɔ ne wozã tsi si wotsɔa dzoxɔxɔ klɔa nu ƒe mɔnu, gake mɔnu sia zazã sesẽ ŋutɔ, eye womate ŋu ana amewo nalɔ̃e le goawo katã me o, eye wòsɔ na hiahiã tɔxɛwo ko.
Be woakpɔ valvɔ ƒe ke ta eye woaxe mɔ ɖe asbestos ƒe nubablɛa ƒe xɔxlɔ̃ nu la, le asbestos ƒe nubablɛa me la, wotsɔa xɔtunu si xea mɔ na xɔxlɔ̃ kple vɔsa ga la tsyɔa ʋuƒoa ƒe ke dzi, wotsɔa sodium nitrite kple sodium chromate wɔ xɔtunu si xea mɔ na xɔxlɔ̃ la, si ate ŋu awɔ pasivation film ɖe valvɔa ƒe ke ƒe anyime eye wòana valvɔ ƒe ke ƒe xɔxlɔ̃ nanyo ɖe edzi, eye atike si wotsɔna tsia xɔdzoa nu ate ŋu awɔ xɔtunua mɔxenu la ƒuna vivivi eye wòwɔa akpa aɖe le amisisi me; Le nyateƒe me la, zinc hã nye nusi xea mɔ na xɔxlɔ̃, si ate ŋu aƒo ƒu kple chloride si le asbestos me gbã, ale be chloride kple ke ƒe ga ƒe kadodo ƒe mɔnukpɔkpɔ dzi ɖena kpɔtɔna ŋutɔ, ale be woaɖo taɖodzinu si nye be woatsi xɔxlɔ̃ nu gbɔ.
7. Elektrikŋusẽ ƒe ametakpɔkpɔ
Elektrikŋusẽ takpɔkpɔ ƒomevi eve li: anodic takpɔkpɔ kple cathodic takpɔkpɔ. Ne wozã zinc tsɔ kpɔ gayibɔ ta la, zinc xɔa dzo, woyɔa zinc be vɔsa ga, le ewɔwɔ ƒe nuwɔna me la, womezãa anode takpɔkpɔ boo o, wozãa cathodic takpɔkpɔ geɖe wu. Wozãa cathodic takpɔkpɔ mɔnu sia na valvɔ gãwo kple valvɔ veviwo, si nye mɔnu si me ga menɔa anyi o, bɔbɔe eye wòwɔa dɔ nyuie, eye wotsɔa zinc dea asbestos ƒe nubablɛa me tsɔ kpɔa valvɔa ƒe ke ta.
8. Kpɔ nuto si me nu gblẽna le la dzi
Nusi woyɔna be nuto la ƒe gɔmesese gbadza kple gɔmesese kpui ƒomevi eve le esi, nutome ƒe seselelãme gbadzaa fia nuto si ƒo xlã valvɔa ɖoɖo teƒe kple eƒe ememe tsatsam ƒe mɔ̃, eye nutome ƒe seselelãme kpui la fia nɔnɔme siwo ƒo xlã valvɔa ɖoɖo teƒe.
Womate ŋu aɖu nuto akpa gãtɔ dzi o, eye womate ŋu atrɔ alesi wowɔa woe le wo ɖokui si o. Nenye be nu magblẽ nu le nusi wowɔ kple nusi wowɔ ŋu o ko la, woate ŋu axɔ mɔnu si dzi woato akpɔ nutoa dzi, abe deoxygenation le dzodoƒe ƒe tsi me, alkali tsɔtsɔ de ami me kɔklɔ ƒe ɖoɖoa me be woatrɔ asi le PH ƒe asixɔxɔ ŋu, kple bubuawo Le nukpɔsusu sia nu la, nusiwo xea mɔ na xɔxlɔ̃ kple elektrikŋusẽ ƒe ametakpɔnu siwo míeyɔ ɖe etame ƒe tsɔtsɔ kpe ɖe eŋu hã nye mɔ si dzi woato akpɔ nuto si me xɔxlɔ̃ le dzi.
Yame yɔ fũ kple ke, tsi ƒe dzoxɔxɔ kple dzudzɔ, vevietɔ le nuwɔwɔ ƒe nɔnɔme me, abe dzudzɔ ƒe tsifago, aɖiya kple aŋɔ nyui si dɔwɔnuwo dona, si ana xɔtunua naxɔ dzo le mɔ vovovowo nu. Ele be dɔwɔla la nakɔ valvɔa ŋu ahakɔe ɖa edziedzi eye wòade ami eme edziedzi le dɔwɔwɔ ƒe ɖoɖowo ƒe ɖoɖowo nu, si nye afɔɖeɖe nyui aɖe si woatsɔ akpɔ nutome ƒe gbegblẽ dzi. Ametakpɔnu aɖe dede ʋuƒoa ƒe ke ŋu, anyigba ƒe vudo ɖoɖo ɖe anyigba ƒe ʋuƒoa dzi, kple amadede tsɔtsɔ ƒu gbe ɖe ʋuƒoa ƒe anyime katã nye mɔ siwo dzi woato axe mɔ na nusiwo gblẽa nu le ame ŋu be woagagblẽ...valve.
Yame ƒe dzoxɔxɔ kple ɖiƒoƒo ya ƒe dzidziɖedzi, vevietɔ na dɔwɔnuwo kple ʋuƒo siwo le teƒe si wotu la, ana woƒe xɔxlɔ̃ nawɔ kabakaba, eye ele be woazã dɔwɔƒe siwo le ʋuʋu ɖi alo yaƒoƒo kple fafa ƒe mɔnuwo alesi woate ŋui atsɔ aɖe nutome ƒe xɔxlɔ̃ dzi akpɔtɔ.
9. Na dɔwɔwɔ ƒe mɔ̃ɖaŋununya kple valvɔ ƒe wɔwɔme nanyo ɖe edzi
Ametakpɔnu si tsi tre ɖe xɔxlɔ̃ ŋu si le...valvenye kuxi si ŋu wobu tso aɖaŋua ƒe gɔmedzedze, eye ɖikeke mele eme o be valvɔ ƒe nuwɔna si ƒe xɔtuɖoɖo si sɔ kple dɔwɔwɔ ƒe mɔnu nyuitɔ akpɔ ŋusẽ nyui ɖe valvɔa ƒe xɔxlɔ̃ dzi ɖeɖe kpɔtɔ dzi. Eyata ele be aɖaŋu kple nuwo wɔwɔ ƒe dɔwɔƒea nawɔ akpa siwo mesɔ le xɔtuɖaŋu me o, siwo mesɔ le dɔwɔwɔ ƒe mɔnuwo me o eye wole bɔbɔe be woaxɔ dzo la nanyo ɖe edzi, ale be woatrɔ asi le wo ŋu wòasɔ ɖe dɔwɔwɔ ƒe nɔnɔme vovovowo ƒe nudidiwo nu.
Ɣeyiɣi si woatsɔ aɖoe ɖe amewo: Jan-22-2025
