Ɛntɛrinɛti ɲɛmɔgɔw ni sow jɔbagaw bɛ u tanu kosɛbɛ Galvanized Steel a yɛrɛ kɛnɛyali, saraka zinki dacogo kosɔn. O nɛgɛ barika kabakoma in bɛ kɛ i n’a fɔ ɲɛfɛla lafasalikɛlan ka bɔ sɔgɔli la. Nka, a tɛ tanga pewu tiɲɛni ma. Kemikɛli sigida minnu ka jugu ani funteni jugumanba bɛ se ka nin lakanani in tiɲɛ joona.
Desizɔn tabaga caman bɛ gɛlɛya dogolen dɔ sɔrɔ foro kɔnɔ. Yɔrɔ labɛncogo jugu, finimugu min tɛ bɛn ɲɔgɔn ma, walima ladonni kɛcogo jugu bɛ se ka zinki sɔgɔlen bɔ ni timinandiya ye. Ni o kɛra, aw bɛ sɔgɔsɔgɔ teliya sanni ka a bali. Aw ka kan ka zinki ka chimie nɔgɔlen faamuya walasa ka aw yɛrɛ tanga poroze dɛsɛba ma.
Nin barokun bɛ sariya gɛlɛn dɔ di walasa ka lakana finiw jateminɛ. An bɛna ladonni sariya jɛlenw sigi sen kan aw ka yɔrɔ la. Aw bɛna a dɔn fana cogo min na ka industri-grade surface labɛnni kɛ ka ɲɛsin fɛnɲɛnamafagalanw ma i n’a fɔ a nɛgɛdaga galvanisé ani jɔlifɛnw dilannenw.
Takeaways (Takeaways) kunbabaw
Zɛnki patina lakanani bɛ kalo 6 fo kalo 24 de wajibiya walasa ka waati dafalen kɛ; ni aw ye zinki min ma sɛgɛn, ni aw ma labɛn kɛrɛnkɛrɛnnen kɛ, o bɛ a jira ko a nɔrɔli tɛ se ka kɛ.
Lamini minnu ka jugu kosɛbɛ (100°C kɛrɛfɛ + nɛnɛba) bɛ se ka 'polarite kɔsegin,' bila sen kan, o bɛ kɛ sababu ye ka zinki teliya—sanni ka nɛgɛ sɔgɔli bali.
Saniya kɛcogo kɔrɔ ka kan ka kɛ ka ɲɛ pH hakɛ 6 fo 12 kɔnɔ; sanji asidilama walima bleach alkaline bɛna zinki layini wuli.
Masina sɔgɔli (i n’a fɔ nɛgɛ burusi walima ka sɔgɔsɔgɔ kojugu) bɛ zinki wulilen bɔ, o bɛ kɛ sababu ye ka fiɲɛ oksidan teliya.
Industriw ka finimugu dafalen bɛ a ɲini ka tugu kosɛbɛ sweep blasting sariyaw la (SSPC-SP 16) ani ka sɛgɛsɛgɛli kɛ ni chromate testing ye (ASTM B 201).
Basi: Faamuyali Degradation ani 'Polarity Reversal'.
Aw tɛ se ka nɛgɛdaga dɔ lakana ni aw ma a daminɛcogo faamuya. Zɛnki kemikali jɛɲɔgɔnya jɔnjɔnw dan tɛ kelen ye. An ka kan ka o danw dɔn walasa ka lakana fɛɛrɛ ɲuman dɔ sigi sen kan.
Yɛrɛ kɛnɛyali fɛɛrɛ
Zɛnki bɛ kɛ sarakabɔlan ye. Elektro-kimiki waleyali la, zinki bɛ a yɛrɛ ka oksidan bila jɔyɔrɔ fɔlɔ la. A b’a ka ɛlektrɔnikiw bila joona walasa ka nɛgɛ kɔnɔna lakana. Ni mɔgɔ dɔ ye a yɔrɔ sɔgɔsɔgɔ, a lamini zinki bɛna a kɛ ka o yɔrɔ tiɲɛnen datugu. O bɛ nɛgɛ min bɛ a jukɔrɔ, o lakana farikolo ni kuran fɛ.
Lamini dantigɛliw (Ni Zɛnki dɛsɛra) .
Hali n’a bɛ se ka muɲu, nin saraka anode fɛɛrɛ in bɛ ni sigida dancɛ gɛlɛnw ye. O dakunw tɛmɛni bɛ fɛn in tiɲɛ joona.
pH tiɲɛniw : Zɛnki bɛ pH sigida sabatilen de wajibiya. A bɛ tiɲɛ joona pH finɛtiri lakananen kɔfɛ min bɛ se 6 fo 12. Sɛnɛfɛnw nɔgɔli gɛlɛn bɛ sanji asidi lase, ka sigida pH hakɛ jigin ka se 4 ma walima ka dɔgɔya. O kɔfɛ, saniya fura gɛlɛn minnu bɛ kɛ ni alkali ye, olu bɛ tɛmɛ pH 12 kan.A dantɛmɛnen fila bɛɛ bɛ lakanani barika labɔ.
Galvanic Corrosion: Nɛgɛ minnu tɛ kelen ye, olu ni ɲɔgɔn cɛ farikolo-ɲɛnajɛ tilennen bɛ tiɲɛni kɛ kosɛbɛ. Ni aw ye nɛgɛ min tɛ baara kɛ kosɛbɛ, i n’a fɔ nɛgɛ walima nɛgɛ, o bila zinki la, o bɛ kɛ sababu ye ka kuran-kimiki teliya la. Zɛnki bɛ a yɛrɛ saraka pewu walasa ka nɛgɛ min bɛ a kɛrɛfɛ, o lakana, ka nɛgɛ min bɛ a jukɔrɔ, o to kɛnɛ pewu.
Polarite (Polarity Reversal) ko ye min bɛ kɛ
Funteni ni nɔgɔ bɛ dɛsɛ cogoya dɔ don min farati ka bon kosɛbɛ, n’o bɛ wele ko polarite reversal. A ka c’a la, o bɛ Kɛ yɔrɔ minnu na funteni ka bon minnu bɛ gɛrɛ 100°C la ni nɛnɛba bɛ fara ɲɔgɔn kan. Sɛnɛyɔrɔw, wazi saniyayɔrɔw, ani izini baarakɛyɔrɔ minnu ka funteni, olu ka teli ka o ko sɔrɔ.
O funteni cogoya kɛrɛnkɛrɛnnenw na, dugukolo sanfɛla kemikali bɛ Changé. Zɛnki bɛ ɲɔgɔn sɔrɔ ka zinki ɔkisidi (ZnO) ni zinki idɔrɔkisidi (Zn(OH)2) dilan. O fɛnɲɛnamafagalanw bɛ zinki layini kuran seko wuli pewu. Zɛnki bɛ wuli ka kɛ katodi ye, nɛgɛ min bɛ a jukɔrɔ, o bɛ kɛ anode ye. Sistɛmu in bɛ boli a jɔyɔrɔba la kɔfɛ. Sanni a k’a yɛrɛ saraka, zinki bɛ nɛgɛ nɔgɔli teliya kosɛbɛ.
Furakɛcogo: Lakanali fini filananw jateminɛni
Tuma dɔw la, zinki basigilen bɛ barika filanan de wajibiya. Sannikɛlaw ka kan ka overcoat solutions ɲumanw sugandi a nɛgɛ bobine galvanisé walima fini dafalen. Nin latigɛ matiriyali in bɛ finimugu fɔlɔ saba tila.
1. Jatebɔ jɛlenw (Aesthetic & Light Duty) .
Baara kɛcogo: Fari jɛlenw bɛ baara kɛ ka ɲɛ ni aw b’a fɛ ka nɛgɛ cɛɲi fɔlɔ mara ka sɔrɔ ka UV ni oksidan kunbɛnni fara a kan.
Jateminɛ kɛcogo:
Gloss & Transparency: Aw bɛ fɛnw ɲini minnu bɛ kɛnɛya hakɛ jira min ka ca ni 90. O b’a to kɛnɛyako wajibiyalenw bɛ to ka ye. Gloss ratings dɔgɔyali bɛna nɛgɛ fini dull.
Furakɛcogo : Aw ka kan ka sugandili kɛ High-Solids coatings ni Turbo coats minnu bɛ ja joona. Sugandili minnu bɛ kɛ ni fɛn gɛlɛnw ye, olu bɛ filimu belebeleba di ani fɛnɲɛnamafagalanw (VOC) minnu tɛ wuli ka bɔ u nɔ na. A ka ca a la, u bɛ furakɛli waati de wajibiya sanga 36 fo lɛri 48 kɔnɔ. Turbo coats bɛ ja joona kosɛbɛ nka u bɛ barika lakanani kɛ min ka fin dɔɔni.
Dantigɛli: Zɛnki kura min bɛ se ka fɛnw kɛ kosɛbɛ, o ka teli ka ban fini jɛlenw na minnu bɛ kɛ ka kɛɲɛ ni sariya ye. Ni sirilan kɛrɛnkɛrɛnnenw tɛ, fini jɛlen bɛna bɔ dɔrɔn ka kɛ sɛbɛn belebelebaw ye.
2. Polimɛri & Poliyesitɛri fini minnu bɛ baara kɛ kosɛbɛ
Baara kɛcogo: Aw mago bɛ nin finimugu ninnu na walasa ka nɛnɛ kojugu ani ka funteni sɔrɔ sigidaw la. Ni polarite kɔsegin ye farati dɔnnen ye aw ka yɔrɔ la, penti standardw bɛna dɛsɛ.
Jateminɛ kɛcogo : Polimɛri walima poliyesitɛri sitɛmu bɛ baara kɛ i n’a fɔ farikolo ni funteni barika dafalen. A bɛ ji ni funteni wulilanw tigɛ pewu. Ni aw ye nɛgɛ bɔ 100°C lamini na, aw bɛ zinki sarakabɔcogo lakana ka ɲɛ.
3. Industrial Penti Sistɛmuw & Zinc-Rich Primers
Baara kɛcogo: Aw bɛ nin fɛɛrɛ ninnu sugandi walasa ka jɔli lakanani baara gɛlɛnw kɛ izini yɔrɔw la minnu bɛ sɔgɔ kosɛbɛ.
Jateminɛ kɛcogo : Ni poroze ka ɲɛfɔliw b’a ɲini ka penti kɛ, aw ka kan ka baara kɛ ni primerw ye minnu bɛ kɛ ni zinki ye minnu bɛ taa nɛgɛ la. Jagokɛla ka penti standardw tɛ ni kemikɛli minɛcogo ye min ka kan ka kɛ nin substrat in na. Penti standardw bɛna bɔ joona ka da zinki ka surface reactivité caman kan.
Tablo de comparaison de couvertures secondaires
Kategori min bɛ kɛ ka finiw da |
Baarakɛcogo fɔlɔ |
Nafa jɔnjɔn |
Dantigɛli Kɔrɔlen |
Coats jɛlenw |
Aesthetic conservation, so kɔnɔ fɛn dilanni baara |
A bɛ nɛgɛ cogoya mara, UV resistance |
Tuma caman na, a bɛ ban ni zinki kura ye min ma wuli |
Polimɛri / Poliyesitɛri |
Serrew, ko yɔrɔ minnu bɛ kɛ ni funteni ye |
A bɛ funteni polarite kɔsegin bali |
A bɛ izini baarakɛcogo tigitigi de wajibiya |
Zinc-Rich Primers + Penti |
Industrie gɛlɛnw, structurel nɛgɛ karamɔgɔya |
Farikolo ni kemikali barika hakɛ maksimali |
A bɛ ɲini ka gɛlɛn sweep blasting prep |
Industriw ka dugukolo labɛnni: Adhesion Bottleneck
Surface profiling jugu ye dɛsɛyɔrɔ ye min ka teli ka kɛ B2B baarakɛcogo la. Aw bɛ se ka polimɛri dacogo sɔngɔ gɛlɛnba san min bɛ sɔrɔ. A bɛna dɛsɛ hali bi ni substrat ma labɛn ka ɲɛ.
Kɔrɔya waatibolodacogo (Kura ni waati cogoya) .
Nɛgɛ kura bɛ taama cogo wɛrɛ la ni nɛgɛ kɔrɔlen ye. Fɛn kura dilannenw kɔnɔ, ɔkisizɛni minnu bɛ dankari kɛ. Tuma caman na, nɛgɛ dilannikɛlaw bɛ nɛgɛ in su jisumayɔrɔw la minnu bɛ wele ko chromate (chromate) walasa a kana nɔgɔ joona. Aw ka kan ka nin kolosinsinnan yebali in sɛgɛsɛgɛ ni ASTM B 201 sariya ye. Ni kuroma bɛ yen, pentiw tɛna nɔrɔ.
An bɛ 'weathered' cogoya ɲɛfɔ iko cogoya ɲuman min bɛ kɛ ka fini don. A bɛ kalo 6 fo kalo 24 kɛ kɛnɛma walasa a ɲɛda ka kɛ patina sabatilen ye min bɛ kɛ ni zinki karɔbɔni ye. Nin patina dabɔlen in ka gɛlɛn dɔɔni wa a bɛ sɔn nɔgɔya la fini filananw na k’a sɔrɔ masin labɛnni gɛlɛn ma kɛ.
Surface Profiling Tolerances (SSPC-SP 16) 1. Bamako, Mali.
Ni aw tɛ se ka kalo 24 makɔnɔ walasa ka waati cogoya sɔrɔ, aw ka kan ka a ɲɛda cogoya kɛ ni fɛn dilannen ye. SSPC-SP 16 sariya bɛ sweep blasting specifications tigitigiw fɔ minnu ka kan ka kɛ fɛnw na minnu bɛ semi-weathered ma.
Abrasive Paramètres : Aw ka kan ka baara kɛ kosɛbɛ ni 200 fo 500 micron (8 fo 20 mils) abrasive media ye. O bɛ kɛ sababu ye ka mikroskɔpi kuncɛw ni kɔw labɛn minnu ka kan ka kɛ walasa ka primer nɔrɔli kɛ.
Faratiw dɔgɔyali: Laada la, cɛncɛn fiyɛli jugumanba dagalen don kosɛbɛ. Ni aw ye a fiyɛ ka tɛmɛ, o bɛna zinki bɔ a la pewu. O balawu bɛ o fɛn sɔngɔ gɛlɛnw lasegin ka kɛ nɛgɛ gansan ye min bɛ se ka tiɲɛ. Baarakɛlaw ka kan ka baara kɛ ni teliya ye, ka burusi kɛ fiɲɛbɔ waati.
Primer Aplikasi teliya la
Zɛnki min bɛ kɛnɛ kan, min ɲɛfɔlen don, o bɛ kɛ ni oksizɛni ye min bɛ a lamini na o yɔrɔnin bɛɛ. Aw tɛ se ka jirisunba dɔ to min fiyɛra kokura, o sigilen bɛ foro kɔnɔ su kelen kɔnɔ. Primer ka kan ka kɛ baarakɛyɔrɔ kelen tigitigi la. Latɛmɛni fɛn o fɛn bɛ kɛ, o bɛ a to oksizɛni mikroskɔpikiw ka se ka u labɛn kokura, ka nɔrɔli cogoya tiɲɛ i ye min da sisan.
Ladonni kɛcogo: Ka kemikoro ni farikolo jɔli bali
Facilités ɲɛmɔgɔw bɛ Operations and Maintenance (O&M) sariya jɛlen de wajibiya. Ladonni kɛcogo ɲuman bɛ nɔgɔ juguw bali ka dumuni kɛ zinki barikalan fɛ.
Saniyacogo sariyaw
Koli kɛcogo kɔrɔ bɛ kɔgɔ nɔgɔlenw ni izini buguri bɔ. Nka, saniya fɛɛrɛ juguw bɛ tiɲɛni banbali lase mɔgɔ ma.
Degun ko dan: Aw bɛ aw ka degun ko minɛnw dan fo ka se 1450 psi ma. Ni aw tɛmɛna o degun kan, o bɛ kɛ sababu ye ka zinki patina farikolo delamina.
Safinɛ sugandili: Aw bɛ safinɛ nɔgɔmanw kɛ, minnu tɛ pH ye. Ameriki ka galvanizɛriw ka tɔnba (AGA) bɛ fura nɔgɔmanw fɔ i n’a fɔ Simple Green® walima vinigari finman min dilannen don. Olu bɛ yeelen sɔgɔli bɔ lafiya la k’a sɔrɔ u ma nɛgɛ ka kemikaliya caman Changé.
Nɔgɔw labɛnni laɲinilen
Industri nɔgɔ suguya caman bɛ furakɛli kɛrɛnkɛrɛnnenw de wajibiya ni kemikɛli ye. Aw bɛ fura ninnu kɛ ka ɲɛ tuma bɛɛ ka sɔrɔ ka a yɔrɔ ko joona.
Ji nɔw ni nɔgɔ nɔgɔmanw: Aw bɛ du kɔnɔ amoniyɔmu jilama kɛ walasa ka nɔgɔ kɔrɔta. Aw bɛ jisuma ko teliya la o kɔfɛ walasa ka a yɔrɔ kɛ fɛn ye min tɛ fɛn wɛrɛ ye.
Nɔgɔ bɔli ani siman sɔgɔli: Ni nɛgɛ kɛnɛ min bɛ kɛrɛfɛ, o bɛ nɔgɔ bɔ aw ka nɛgɛ datugulen kan, aw bɛ saniyalanw kɛ minnu bɛ sɔrɔ asidi ɔkisiliki la. O asidi ninnu bɛ nɛgɛ oksizɛni de laɲini k’a sɔrɔ u ma bin zinki kan ni fanga ye.
Graffiti: Aw bɛ penti min man ɲi, aw bɛ penisilini finmanw bɔ minnu tɛ alkali ye. Aw bɛ finimugu kɛ ka penisilini kɛ ka a sɔgɔ dɔɔni dɔɔni ni plastiki walima jiri sɔgɔlanw ye. Aw kana baara kɛ ni nɛgɛdaga ye abada.
'No Mechanical Abrasion' sariya
Aw ka kan ka nɛgɛ burusi walima sɔgɔlilanw bali kosɛbɛ ladonni waati. Tuma caman na, ladonni baarakɛlaw bɛ fili ka nɔgɔ finman jate nɔgɔ ye, wa u b’a ɲini k’a ko. Masina sɔgɔlanw tɛ 'saniya' yɔrɔ la. U bɛ patina lakanani bɔ kudayi. O bɛ zinki kura min bɛ se ka fɛn caman kɛ, o bila fiɲɛ na, o bɛ garanti di ko a bɛ sɔgɔsɔgɔ teliya la.
Ladili teliya la: Ka sɔgɔsɔgɔninjɛw ni nɛgɛ minnu bɛ kɛnɛ kan, olu dilan
Farikolo tiɲɛni minnu bɛ kɛ tɛmɛsira walima sigili senfɛ, o bɛ jaabi teliya la Standard Operating Procedure (SOP) de wajibiya. Foroliftw bɛ jirisunw sɔgɔsɔgɔ, ani u sigibagaw bɛ baarakɛminɛnw fili.
Dilan Fenɛtiri min bɛ yen
Farikoloɲɛnajɛ minnu bɛ don zinki fɛ ka jigin ka se nɛgɛdaga ma, olu bɛ faratiba lase mɔgɔ ma. Aw ka kan ka o sɔgɔsɔgɔninjɛ jugumanw ɲɛnabɔ joona. Ni a ma furakɛ, lamini ji bɛ se nɛgɛ gansan ma. Nɔgɔ bɛna daminɛ ka sɔgɔsɔgɔ lamini finimugu tiɲɛnen jukɔrɔ, o bɛ kɛ sababu ye ka delamination jɛnsɛn yɔrɔ bɛɛ.
Zinc Spray SOP (Minute 15 labɛnni) .
Aw bɛ se ka sigida tɛmɛsira tiɲɛniw dilan joona ni nin fɛɛrɛ kɔrɔbɔlen ye foro kɔnɔ.
Taabolo fɔlɔ : Aw bɛ a lajɛ ni sigida yɔrɔ jalen don pewu. Aw bɛ masin tulu, bolokɔniw walima jɔli buguri fɛn o fɛn ko ni fini ye min tɛ sɔgɔsɔgɔ.
Taabolo 2nan : Aw bɛ penti fiyɛlan dɔ kɛ min kɔnɔ zinki ka ca. Zɛnki fiyɛli minnu bɛ kɛ jagokɛyɔrɔw la, zinki buguri mikroskɔpiki bɛ sɔrɔ minnu sirilen bɛ sirilan dɔ kɔnɔ. Nin furakɛlicogo in bɛ izini fɔlɔ finimugu yɛrɛ kɛnɛyacogo n’a sɛgɛsɛgɛli kɛcogo ladege kosɛbɛ.
Taabolo 3nan : Aw bɛ furaji kɛ ka kɛɲɛ ni gosi kan. Aw kana ji labɔ o yɔrɔ la. Aw bɛ miniti 15 kɛ yɔrɔ jalen waati dantigɛlen na sani aw ka a yɔrɔ minɛ walima ka a bila ka taa a fɛ.
Kuncɛli
Basi lakanani bɛ tali kɛ kosɛbɛ pH balansi ɲuman marali la ani ka i yɛrɛ tanga kosɛbɛ masinw tiɲɛni ma. Ni aw ye aw ka nɛgɛdaga dantigɛliw faamuya, o b’a to a ka mɛn ani a jɔcogo dafalen.
An bɛ laadilikan di latigɛbagaw ma, u k’u ka fɛɛrɛ tigɛ ka kɛɲɛ ni sigida ye. Ni kɛnɛma sigidaw bɛ kɛ cogo la min bɛ kɛ ka kɛɲɛ ni sariya ye, aw bɛ a to dɔrɔn ko zinki karɔbɔni patina nafama ka kɛ waati kɔnɔ. Baara minnu bɛ kɛ ni funteni ni nɛnɛ jugumanba ye, aw ka kan ka polimɛri fɛnɲɛnamafagalanw ɲɛfɔ minnu bɛ kɛ izini na walasa ka polarite kɔsegin bali. Ni aw bɛ izini girinmanw datugu, aw bɛ yamaruya di ka tugu kosɛbɛ SSPC-SP 16 sweep-blasting sariyaw la walasa ka baara kɛcogo kuntaalajan garanti.
Aw ye fɛɛrɛ tigɛ sani aw ka aw ka yɔrɔ kofɔlenw dafa. Aw bɛ taa aw ka fɛnw feerela fɛ walima ni NACE ka sɛbɛn ye min ye finiko sɛgɛsɛgɛlikɛla ye. U bɛna aw dɛmɛ ka aw ka zinki sɔgɔlen kɛrɛnkɛrɛnnen ni a kɔrɔya cogoya bɛn ɲɔgɔn ma ni primer system ɲuman ye.
Ɲininkaliw
J: Yala ne bɛ se ka baara kɛ ni nɛgɛ burusi ye walasa ka nɔgɔ finman bɔ nɛgɛ galvanizelen na wa?
A: Ayi. Aw bɛ baara kɛ ni plastiki burusi gɛlɛnw dɔrɔn ye.
J: Mun na ne ka nɛgɛ galvanisé pentilen bɛ ka peeling?
A: A ka c’a la, penisilini kɛcogo bɛ sɔrɔ ni penisilini jɔnjɔn kɛli ye zinki la min ma sɛgɛn walima ni i ma se ka kuromati furakɛli minnu kɛ izini na, olu bɔ. Primer (primer) min falen don zinki la ani sweep blasting (sweep blasting) ka kan ka kɛ.
J: Yala nɛgɛ galvanizelen bɛ nɔgɔ joona funteni caman na wa?
A: Ɔwɔ. Lamini minnu bɛ 100°C kɛrɛfɛ ni nɛnɛba faralen don ɲɔgɔn kan, 'polarite reversal' bɛ kɛ yɔrɔ min na zinki bɛ nɛgɛ jukɔrɔla nɔgɔ teliya tiɲɛ na sanni a k’a lakana.
