Makontrakitala nthawi zambiri amawona zinki wopaka utoto ngati njuga yayikulu. Mumamva nthawi zonse nkhani zamakampani zokhuza kuwonongeka kwakukulu komanso kulephera kumamatira komwe kumachitika mkati mwa miyezi ingapo yamalizidwa. Kukayikira kumeneku n’komveka. Komabe, zenizeni ndizodziwikiratu: inde, mutha kujambula bwino. Muzochita zamalonda ndi mafakitale, akatswiri amatcha njirayi 'Duplex System.'
Zowopsa ndizokwera. Mukachichita molondola, penti ndi kukongoletsa zimapanga njira yodzitchinjiriza kwambiri. Mukachita bwino - nthawi zambiri podalira mchenga wamba ndi ma epoxies wamba - zimangowononga bajeti yanu ndikufulumizitsa dzimbiri. Utoto wanu udzatsika kwenikweni pazitsulo.
Tinapanga bukhuli kuti tithetse zongoyerekeza. Cholinga chathu ndikukonzekeretsa makontrakitala, zofananira, ndi magulu ogula zinthu ndi zinthu zomwe sizinavumbulutsidwe. Muphunziranso zofunikira zokonzekera, kuphatikiza ma protocol ofunikira a ASTM. Mupezanso malingaliro osankha zokutira ofunikira kuti mutsimikizire kutsimikizika, kopanda cholakwika, komanso kokhalitsa.
Zofunika Kwambiri
Kumatira kumadalira chemistry ya pamwamba, osati kuuma kokha: Kutsuka mchenga wamba nthawi zambiri kumasokoneza kusanjikiza kwa zinki popanda kuwonetsetsa kuti utoto ukutsatira.
Zaka zimatengera momwe izi zikuyendera: Zokhala ndi malati atsopano, zokhala ndi nyengo pang'ono, komanso zinki zokhazikika zimafunikira njira zokonzekera zosiyana.
Osagwiritsa ntchito zoyambira za alkyd kapena zokhala ndi mafuta: Amachita ndi zinc (saponification), kutembenuza mawonekedwe oyambira kukhala sopo woterera, zomwe zimatsogolera ku peel yonse.
Yang'anirani njira zina msanga: Pamagulu olondola kwambiri omwe amatha kupotoza kutentha, zoyambira zokhala ndi zinki zambiri pazitsulo zopanda kanthu zitha kupereka ROI yabwinoko kuposa ma hot-dip galvanizing (HDG) kuphatikiza utoto.
Bizinesi ya 'Duplex System'
Choyamba tiyenera kufotokozera Duplex System kuti timvetsetse kufunika kwake. Ndiko kuphatikizika kwabwino kwa zokutira zotentha za dip galvanized (HDG) ndi zokutira zapadera zamadzimadzi kapena ufa. Kuti izi zitheke molondola, ndondomeko yonseyi iyenera kukhala yogwirizana ndi ASTM D6386. Muyezo uwu umayang'anira kukonzekera kwa zinki zopenta.
Phindu lalikulu la dongosololi lagona mu zotsatira zake za synergistic. Filimu ya penti yakunja imakhala ngati chotchinga. Imateteza zokutira zapansi za zinc kuti zisagwiritsidwe msanga chifukwa cha zowononga zam'mlengalenga. Kuphatikiza apo, zinc yapansi imapereka chitetezo champhamvu cha cathodic. Ngati penti ikandedwa kapena kung'ambika, zinkiyo imakhala ngati nsembe ya anode. Zimalepheretsa dzimbiri pansi pafilimu, kuwonetsetsa kuti zowonongekazo zimakhalabe zamtundu.
Njira yodzitetezera yamitundu iwiri iyi imakulitsa moyo wautali kwambiri. Moyo wonse wautumiki wa duplex system nthawi zambiri ndi 1.5 mpaka 2.5 kuchuluka kwa moyo wamunthu wa zinki ndi utoto wokha. Simumangopeza zigawo ziwiri zachitetezo; mumapeza zochulukira.
Mfundo iyi imagwira ntchito pamapulogalamu angapo osinthika. Mutha kuchitira zitsulo zolemera pambuyo pakupanga bwalo lakunja. M'malo mwake, mutha kugwiritsa ntchito pre-peinting koyilo yachitsulo yamalata ndi zida zopangira zitsulo zopangira zida zapamwamba zopanga zomangamanga. Mfundo za chemistry ndi chitetezo zimakhalabe zofanana mosasamala kanthu za mtundu wa zinthu.
Kuwunika Mkhalidwe Wopaka: Magawo atatu a Nyengo
Kuwunika kwanu kwapamwamba kumatengera kupambana kapena kulephera. Protocol yokonzekera imatengera nthawi yayitali bwanji Chitsulo cha Galvanized chawonetsedwa mumlengalenga. Simungathe kuchitira zinki zakale ndi zinki zatsopano mwanjira yomweyo.
Zatsopano Zagalasi (0 mpaka 48 Maola)
Pawindo loyambirira ili, mkhalidwe wachitsulo ndi wosalala kwambiri komanso wonyezimira kwambiri. Pafupifupi palibe mankhwala a zinc omwe apangidwa pamwamba pano. Chitsulocho sichikhala ndi porous. Chifukwa alibe mawonekedwe, utoto ulibe chilichonse choti ungagwire. Kuchitapo kanthu ndikofunikira. Pamwamba pamafunika kuyeretsa bwino komanso kuvomerezedwa kwamankhwala kapena makina. Muyenera kumangirira pamwamba kuti mupange nsonga zazing'ono zazing'ono zomatira.
Nyengo Yapang'ono (Masiku a 2 mpaka Chaka chimodzi) - Gawo Langozi Kwambiri
Iyi ndiye gawo lowopsa kwambiri pakuyika ntchito zokutira. M’miyezi imeneyi, mkhalidwe wa pamwamba umasintha mofulumira. Imakutidwa ndi ma zinc oxides osakanikirana ndi zinc hydroxides. Nthawi zambiri mumawona izi ngati dzimbiri loyera la ufa pazitsulo. Zinthu zotayirirazi zimasokoneza kwambiri kumamatira kwa utoto. Ngati muwapaka, utotowo umamatira ku ufa, ndipo ufawo umachoka kuchitsulo. Kuchita kumafuna kuyeretsa mwaukali ndi mbiri. Muyenera kuchotseratu ma depositi a chalky awa musanagwiritse ntchito poyambira.
Nyengo Yathunthu (Chaka 1+)
Pambuyo pa chaka chodziwika, zitsulo zimakhazikika. Mkhalidwe wapamtunda umasintha pamene umatenga carbon dioxide kuchokera mumlengalenga. Amapanga zinc carbonate. Ichi ndi chogwirizira mwamphamvu, chosasungunuka m'madzi. Zinc carbonate ndi gawo labwino kwambiri, losauka mwachilengedwe la utoto. Zochita pano zimafuna kusamala. Mukungofunika kuyeretsa pang'ono pogwiritsa ntchito madzi ofunda komanso chotsitsa chotsitsa. Ndikofunikira kuti musachotse zinc carbonate wosanjikiza pakuyeretsa.
Weathering Stage |
Munthawi |
Surface Condition |
Zofunika Kuchita |
Zatsopano Galimoto |
0 mpaka 48 Maola |
Zosalala, zonyezimira, zopanda porous |
Yesani bwino; gwiritsani ntchito mankhwala kapena makina etching. |
Nyengo Yapang'ono |
Masiku 2 mpaka 1 Chaka |
White powdery dzimbiri (zinc oxides/hydroxides) |
Mwamakani chotsani zonse zotayirira komanso mbiri. |
Weathered Mokwanira |
1 Chaka + |
Zinc carbonate wosanjikiza wokhazikika |
Kuchepetsa pang'ono kokha; sungani zinc carbonate. |
Kukonzekera Pamwamba: Kuchepetsa Zowopsa Zolephera
Ngakhale mutazindikira bwino nyengo yanyengo, kusachita bwino pokonzekera kumawononga duplex system. Muyenera kutsatira ma protocol okhwima kuti muchepetse zoopsa zolephera.
Kuchepetsa Chiwopsezo (Kuyesa kwa Chromate)
Malo nthawi zambiri amaviika zitsulo zongopangidwa kumene m'mabafa a chromate. Ma passivation agents awa amalepheretsa kusungunuka kosungirako konyowa panthawi yotumiza. Komabe, ma chromates amathamangitsa utoto. Muyenera kuyesa ma passivation agents nthawi zonse pogwiritsa ntchito protocol ya ASTM B201. Ngati mayeso akuwonetsa ma chromates, simungathe kujambula chitsulo nthawi yomweyo. Ma chromates amayenera kuthawa mwachilengedwe, kapena muyenera kuwachotsa mwamphamvu pogwiritsa ntchito mbiri yamakina.
Kuyeretsa Protocols
Musanavute pamwamba, muyenera kuchotsa zonyansa zonse, mafuta, ndi organic. Tsatirani njira zotsatirazi kuti muyeretse bwino:
Ikani mankhwala oyeretsera amchere kapena acidic (omwe amachepetsedwa 25: 1) pamwamba.
Gwiritsani ntchito burashi yofewa kuti musokoneze zonyansa za organic.
Muzimutsuka bwino pamwamba ndi madzi oyera kuti asasokoneze zoyeretsa.
Lolani zitsulo kuti ziume kwathunthu musanapitirire kumalo owonetsera.
Pamapepala atsopano a pristine, kupukuta kwa viniga woyera wa mafakitale kungapereke chiwongolero cha asidi, chochepa kwambiri pamene mukuchotsa mafuta opepuka nthawi imodzi.
Mbiri (Kupanga Chitsanzo cha Nangula)
Utoto umafunikira zigwa zazing'ono komanso nsonga zotsekera. Izi timazitcha chitsanzo cha nangula. Muli ndi njira zingapo zokwaniritsira izi popanda kuwononga zitsulo.
Sesa Kuphulika (SSPC-SP 16): Uwu ndiye mulingo wamakampani pamakina opangira mbiri. Muyenera kugwiritsa ntchito njira yopumira pang'ono. Gwirani nozzle pakati pa madigiri 30 ndi 60. Gwiritsani ntchito abrasive yotsika kwambiri. Abrasive ayenera kukhala pa Mohs kuuma kwa 5 kapena kutsika (monga zipolopolo za mtedza, chimanga, kapena mchenga wina wa mchere). Sungani kukula kwa tinthu pakati pa 200 ndi 500 microns.
Chiwopsezo Chophulika: Muyenera kupewa kuphulika kwa mchenga wa digirii 90 zivute zitani. Kuphulika kokhazikika kumachotsa zinki yofewa kwathunthu. Izi zimawononga chitetezo cha anode ya nsembe, zomwe zimapangitsa kuti njira yonse yopangira galvanizing ikhale yopanda pake. Ngati kusesa kuli koopsa kwambiri kwa ogwira nawo ntchito, tsatirani njira zama mankhwala.
Sambani Zoyambira / Acrylic Pretreatment: Awa ndi ma acidic opangidwa kuti asinthe mphamvu ya zinc pamwamba. Amakakamiza zinki kuvomereza utoto popanda kuphwanya makina. Izi zimachotseratu chiopsezo cha overblasting.
Kusankha Kuvala: Chemistry Yomwe Imamamatira
Kukonzekera kwanu kungakhale kopanda cholakwika, koma kugwiritsa ntchito chemistry yolakwika kungayambitsebe kulephera koopsa. Zinc ndi chitsulo chamchere, ndipo chimagwira mwamphamvu ndi mapangidwe ena a utoto.
The Cardinal Rule (Zoyenera Kupewa)
Muyenera kuletsa utoto wopangidwa ndi alkyd ndi zoyambira zamafuta. Zinc ikakumana ndi ma alkyd resins, kusakhazikika kwa mankhwala kumachitika. Izi zimatchedwa saponification. Zinc ya alkaline imakhudzidwa ndi mafuta kuti apange sopo weniweni pansi pa filimu ya utoto. Pamene saponification ichitika, zokutirazo zimachotsedwa m'mapepala akuluakulu, osinthika. Izi zimatsimikizira kulephera kwathunthu ❖ kuyanika.
Zovomerezeka Zoyambira
Muyenera kutchula zoyambira zomwe zidapangidwa kuti zigwirizane ndi zinc. Makampaniwa amazindikira magulu awiri oyamba.
Zoyambira Zapadera Zodzikongoletsa: Izi zimapangidwira malo opaka malata otentha. Amagwirizana ndi zomwe SSPC Paint 27. Amaluma muzitsulo ndi mankhwala.
Acrylic Metal Primers: Zoyambira zapamwamba zokhala ndi madzi za acrylic zimawonetsa zomatira bwino pazinki yotsukidwa bwino. Amakhala osinthika ndikukana saponification kwathunthu.
Ma Topcoats Apamwamba
Mukangoyang'ana pamwamba, mumafunika topcoat yolimba kuti mupirire nkhanza zachilengedwe. Timalimbikitsa utoto wa Direct-To-Metal (DTM) wa acrylic latex kapena DTM acrylic enamels pazogwiritsa ntchito zambiri zakunja.
Kwa madera aukali, muyenera kukweza mafotokozedwe anu. Ganizirani za malo okhala m'madzi okhala ndi chlorine wambiri. Zovala zamtundu wa polyester zaufa zimalephera mwachangu zikakumana ndi nthunzi yamkati yamadzi. Muzochitika izi, tchulani utoto wamtundu umodzi wamakampani. Utoto wapadera wamafakitalewu umadutsa kufunikira kwa zoyambira zosiyana chifukwa zimalumikizana mwachindunji ndi nthaka.
Coating Category |
Zitsanzo / Mitundu |
Chigamulo cha Duplex Systems |
Zoletsedwa Zopanga |
Alkyd enamels, zoyambira zoyambira mafuta |
Pewani Kwambiri. Amayambitsa saponification (kupanga sopo) ndi kupukuta kwathunthu. |
Zoyambira Zovomerezeka |
SSPC Paint 27, zoyambira zitsulo za acrylic, zoyambira zosamba |
Analimbikitsa Kwambiri. Amapereka kukhazikika kwamankhwala okhazikika popanda kuchitapo kanthu molakwika. |
Topcoats yabwino |
DTM acrylic latex, DTM enamels, mafakitale a sitepe imodzi ya zinki |
Analimbikitsa Kwambiri. Amapanga chotchinga cholimba, chosinthika, cholimbana ndi nyengo. |
Mtsutso Wotsutsa: Nthawi Yomwe Mungadumphe Galvanizing + Paint
Tiyenera kuthana ndi vuto lalikulu la kukhazikitsidwa. Kuthira kothira kotentha kotsatiridwa ndi kujambula ndizovuta kwambiri, njira yamalonda yambiri. Ili ndi malire okwera kwambiri chifukwa cholakwitsa. Nthawi zina, duplex system ndiye chisankho cholakwika cha polojekiti yanu.
Kukhazikitsa Zowona & Kuwongolera Ubwino
Kupanga sikumapita mwangwiro. Zosintha m'munda zimafunikira kuwotcherera pamalo. Kuwotcherera nthawi yomweyo kumawononga wosanjikiza wa HDG. Makontrakitala akamakonza ma welds awa m'munda ndi kupopera kwa zinc ozizira, kukonza kumakhala kotsika kwambiri poyerekeza ndi malata a dip-dip fakitale. Mumapanga ulalo wofooka mu unyolo wanu wotsutsa dzimbiri.
Chiwopsezo cha Kusokonezeka kwa Matenthedwe
Muyenera kuganiziranso kutentha kwakukulu kwa kusamba kwa malata. Zomangamanga zachitsulo zovuta kwambiri kapena zolondola kwambiri ndizosavuta kugunda ndi kusokonekera panthawi yoviika. Ngati kapangidwe kanu kamangidwe kamafuna kulolerana ndendende, muyenera kuwona malangizo a ASTM A384 pakupotoza kwamafuta. Nthawi zambiri, chiwopsezo cha kutentha chimakhala chokwera kwambiri.
The High-Performance Primer Alternative
Ganizirani zofunikira pokonzekera pamwamba pa topcoat yanu yomaliza. Zovala zina zapamwamba zam'madzi kapena zamakampani zimafuna mbiri ya 'Near-White Blast' kuti imamatire bwino. Ngati muphulitsa malata kuti akhale mulingo wa Near-White, kuphulika koopsako kuwonongeratu zinki. Mudzawononga ndalama zanu kukhala fumbi.
Chisankho Logic
Muzochitika zolondola kwambiri, kapena m'mafakitale olemera omwe amafuna kuphulika kwakukulu, ndizothandiza kwambiri kulumpha malata a dip-dip kotheratu. Ikani choyambira cholemera kwambiri cha zinc mwachindunji pachitsulo chophulika bwino. Tsatirani izi ndi topcoat yanu yochita bwino kwambiri. Mudzakhala ndi moyo wautali wofananira, kuchotsa ziwopsezo zakuwonongeka kwamafuta, ndikuchepetsa kwambiri njira yanu yoperekera.
Mapeto
Kupenta malo a zinc ndikothandiza kwambiri, koma njirayi ndiyosalolera njira zazifupi. Kupambana kwanu kumadalira pakuwunika kolondola kwanyengo, kugwiritsa ntchito njira yolondola yowonera mbiri, ndikupewa mosamalitsa ma resin osagwirizana ngati alkyds.
Musanayambe ntchito yanu yotsatira, chitanipo kanthu kuti muteteze zomwe mukufuna. Limbikitsani magulu anu ogula zinthu ndi mainjiniya kuti afufuze mozama mayendedwe a othandizira. Onetsetsani kuti akutsimikizira kutsatira kwathunthu ASTM D6386 pokonzekera pamwamba ndi SSPC-SP 16 pakusesa. Mukafuna kutsatira mfundo izi, mumasintha penti yowopsa kukhala yodziwikiratu, yolimba kwambiri.
FAQ
Q: Kodi mungapente molunjika pazitsulo zamalata?
Yankho: Ayi. Zosakonzekera, zokhala ndi malata atsopano ndi zosalala kwambiri komanso zosunthika pamakina opaka utoto. Muyenera kuyeretsa bwino chitsulocho, kuyika chithunzicho pogwiritsa ntchito thaulo lamankhwala kapena kusesa kwapang'onopang'ono, ndikuyika kachipangizo koyambira kachitsulo kapadera.
Q: Ndi utoto wamtundu wanji womwe ungamamatire ku chitsulo chamalata?
A: Muyenera kugwiritsa ntchito utoto wa Direct-To-Metal (DTM) acrylic latex paints, acrylic enamels, kapena penti yapadera yamagawo amodzi opangira zinki. Musagwiritse ntchito utoto wa alkyd kapena mafuta, chifukwa angayambitse saponification komanso peel.
Q: Kodi ndimapenta bwanji zitsulo zokhala ndi dzimbiri (zanyengo)?
Yankho: Ngati muwona 'dzimbiri loyera' (zinc oxide), muyenera kulichotsa bwinobwino poyeretsa mwaukali ndi kuchotsa mafuta. Mukawona dzimbiri lofiira, chitsulo chapansi chimawonekera. Muyenera kukonza dzimbiri ndikugwiritsa ntchito chigamba chodzaza ndi zinki musanavale pamwamba.
Q: Kodi ndikufunika choyambira chapadera cha koyilo yachitsulo chamalata?
A: Inde. Ma coils nthawi zambiri amakhala ndi chithandizo chamankhwala monga ma chromates kapena mafuta ogudubuza omwe amagwiritsidwa ntchito pafakitale. Muyenera kuchotsa ndi mankhwala zigawo zotetezazi poyamba. Pambuyo pake, muyenera kugwiritsa ntchito choyambira chachitsulo chodzikongoletsa nokha kapena acrylic musanagwiritse ntchito chovala chanu chomaliza.
