Inde, mutha kumata bwino chitsulo chamalazi kuti mupange 'duplex system' yolimba yomwe imapereka kukana kwa dzimbiri kwapamwamba. Kuphatikiza zigawo ziwiri zodzitchinjiriza izi kumapangitsa kuti pakhale kukongola kotha kupulumuka m'malo ovuta a mafakitale.
Komabe, malo owunikiridwa kumene sanakonzekere kuti aphimbidwe mubafa. Popanda kukonzekera mokhazikika komanso mokhazikika, zokutira zanu zodzitchinjiriza zitha kuvutitsidwa ndi kutulutsa mpweya, kubowoleza, komanso kuwonongeka koopsa. Simungangopopera ufa pamwamba pa zinki ndikuyembekeza kuti izi zidzakhazikika pakapita nthawi.
Bukuli limaphwanya malingaliro a uinjiniya kumbuyo kwa zokutira zowirikiza komanso misampha yomwe muyenera kupewa. Tidzafufuza ndondomeko zokonzekera za ASTM zomwe zimafunikila kumamatira mwamphamvu. Tikupatsiraninso njira zowunikira kuti zikuthandizireni kutchula bwino zida zokutira za ufa zantchito yanu yotsatira yomanga kapena yopanga.
Zofunika Kwambiri
The 2.5x Multiplier: Kuphatikiza kupaka ufa ndi galvanizing yotentha-kuviika kumapereka mphamvu yolumikizana, kukulitsa moyo wachitsulo mpaka nthawi 2.5 kuposa zokutira zokha.
Kuopsa Kwambiri: Chinyezi ndi gasi wotsekeredwa mu zinc wosanjikiza zimakula panthawi yochiritsa ufa, ndikupangitsa ma pinholes. Kuvomerezedwa 'kuphika kale' ndiko kuchepetsako kodalirika.
Zenera la Oxidation: Zinc imagwira ntchito kwambiri. Zikawonetsedwa, zida zopangira malata ziyenera kukutidwa mkati mwa kusintha komweku kwantchito (bwino pansi pa maola 12) kuti tipewe mawonekedwe osawoneka a zinc oxide.
Kutsatira Kwanthawi Zonse: Kugwiritsa ntchito bwino kumafuna kutsatira mosamalitsa malangizo a ASTM D7803 ndi SSPC-SP 16 pokonzekera pamwamba.
1. Mlandu Wabizinesi: Chifukwa Chiyani Mumayika Ndalama mu Duplex System?
Kumvetsetsa kuyanjana pakati pa zokutira za ufa ndi zigawo za zinc ndikofunikira. Mumapanga chitetezo cha synergistic mukawaphatikiza. Polyester kapena epoxy ufa umakhala ngati chotchinga cholimba chakuthupi. Imathamangitsa chinyontho, mankhwala owopsa, ndi zotupa zakuthupi. Ngati kukanda kwakukulu kuphwanya chotchinga ichi, nthaka yosanjikiza ya zinc imayamba. Zimapereka chitetezo cha nsembe ya anodic, kuwononga poyamba kuti chitsulo chopanda kanthu chitetezeke ku dzimbiri.
Njira yamitundu iwiriyi imachepetsa kwambiri kukonzanso kwa moyo. Ndalama zoyamba zogwiritsira ntchito ndizokwera mwachibadwa kuposa njira imodzi yokutira. Komabe, kuchepa kwakukulu pakukonza kosalekeza kumapangitsa kuti ma duplex akhale okwera mtengo kwambiri. Zomangamanga ndi zomangamanga zimapindula kwambiri ndi kukhazikika kotalikiraku. Simudzafunikanso kutseka ntchito zopenta mosayembekezereka kapena kuchepetsa dzimbiri.
Kukhazikika kumathandizanso kwambiri pakufotokozedwa kwamakono. Kupaka utoto kumapangitsa kuti pakhale ziro zotulutsa mpweya wa Volatile Organic Compound (VOC). Kuphatikiza apo, overspray iliyonse imagwidwa mosavuta ndikusinthidwanso. Kugwiritsa ntchito zida zokutira ufa kumatha kuthandizira mwachindunji ku ma certification a LEED, makamaka pazachilengedwe zamkati. Okonza mapulani amayamikira kwambiri zipangizo zomangira zotsika utsizi.
Pomaliza, machitidwe a duplex amapereka kusinthika kwazinthu zambiri. Pulogalamuyi imakula bwino pamagawo osiyanasiyana a polojekiti. Mutha kuziyika pazitsulo zazikulu zokutidwa ndi batch. Mukhozanso kugwiritsa ntchito mosalekeza kanasonkhezereka zitsulo koyilo processing. Mizere yopangira makina ambiri imadalira zida zachitsulo zachitsulo zomwe zimafika zitakutidwa kale ndikukonzekera kupangidwa.
2. Zovuta Zaumisiri Wapakati: Kutulutsa Mafuta ndi Zinc Yogwira Ntchito
Kupaka ufa pazitsulo zovimbidwa zotentha kumayambitsa zovuta zaukadaulo. Chinthu chodziwika kwambiri ndi kutulutsa mpweya. Panthawi yopangira malata, matumba ang'onoang'ono a chinyezi ndi mpweya amatsekeka mkati mwa zinc pamwamba. Pambuyo pake, gawolo limalowa mu uvuni wochiritsira kuti lisungunuke zokutira za ufa. Ovuniyi nthawi zambiri imayenda mozungulira 180°C (356°F).
Pamene chitsulo chikuwotcha, mipweya yotsekeredwayo imakula mofulumira. Amakakamiza kutuluka kunja kudzera pa polyester yosungunuka kapena epoxy layer. Kuthawa kwachiwawa kumeneku kumapanga thovu lowoneka, ma craters, ndi ma pinholes. Ma pinholes awa amawononga kumaliza kokongola. Choyipa chachikulu, amapereka njira zachindunji kuti chinyezi chidutse chotchinga choteteza ufa.
Vuto lina lalikulu ndi msampha wosawoneka wa zinc oxide. Zinc ndi chitsulo chogwira ntchito kwambiri. Imayamba kutulutsa okosijeni nthawi yomweyo ikakhudzidwa ndi mpweya wa mumlengalenga. Anthu ambiri amazindikira 'dzimbiri loyera' ngati chizindikiro cha zinc oxidation. Komabe, tizigawo ta microscopic zinc oxide timapanga kalekale dzimbiri loyera lisanawoneke. Chosanjikiza chosawonekachi chimagwira ntchito ngati chishango chafumbi chowoneka bwino. Zimawononga kwathunthu zomatira zopaka ufa ngati sizitsatiridwa.
Kusintha kwa ukalamba kumasokonezanso njira yanu yokonzekera. Njira yanu iyenera kusintha potengera zaka zenizeni za nthaka. Zitsulo zatsopano (zosakwana maola 48) zimafunikira kugwiriridwa kosiyana kwambiri ndi zinki zosamalidwa pang'ono (zowonekera kwa chaka chimodzi). Zinc yatsopano imafunikira mbiri yamphamvu. Weathered zinc imafuna kuyeretsa kwambiri kwamankhwala kuti muchotse ma hydroxide ndi ma carbonates owuma musanayambe kulemba mbiri.
3. ASTM D7803 Kukonzekera Miyezo Yochepetsera Chiwopsezo
Kuti mupewe delamination ndi pinholing, muyenera kutsatira ndendende njira zomwe zafotokozedwa mu ASTM D7803. Muyezo uwu umanena za kukonzekera koyenera kwa zokutira zamalata otentha zopaka ufa.
Khwerero 1: Kuyeretsa Kwamankhwala ndi Zosungunulira
Choyamba muyenera kuchotsa zonyansa zonse, mafuta, ndi mafuta. Zowonongeka zakuthupi monga mabampu, kuthamanga, ndi madontho a zinc zimafunanso kupukuta mosamala. Gwiritsani ntchito mankhwala a alkaline ofooka kapena opanda acidic pochapa mankhwala. Musagwiritse ntchito mankhwala owopsa a caustic. Ma strippers aukali adzasungunula kwathunthu chitetezo cha zinc. Nthawi zonse mutsuka pamwamba ndi madzi aukhondo ndikuwonetsetsa kuti pauma musanapitirire.
Gawo 2: Mbiri Yapamwamba (SSPC-SP 16)
Malo osalala bwino a zinki sangathe kugwira utoto wa ufa. Muyenera kupanga mbiri ya nangula ya microscopic. Komabe, muyezo heavy abrasive kuphulika mabwinja zitsulo kanasonkhezereka. Imang'amba zinc kuchokera pagawo lachitsulo.
M'malo mwake, mulingo wa SSPC-SP 16 umafunika njira ina ya 'Sesa Kuphulika'. Ogwiritsa ntchito ayenera kugwiritsa ntchito ma abrasives opanda zitsulo, osalimba kwambiri (Mohs scale hardness ≤ 5). Magalasi ophwanyidwa kapena zipolopolo za mtedza zimagwira ntchito bwino. Mphuno yophulika iyenera kukhala pamtunda wosaya wa 30 ° mpaka 60 °. Kusesa kotereku kumangotulutsa pamwamba. Imapanga malo ofunikira osachotsa zinki (Eta) pamwamba. Malo ena amagwiritsanso ntchito kusanthula kwamankhwala pogwiritsa ntchito zinki kapena chitsulo cha phosphate ngati njira ina yoyenera kusesa kusesa.
Gawo 3: Thermal Degassing (Pre-Baking)
Ili ndiye gawo lanu lofunika kwambiri lowongolera zoopsa kuti mupewe kutulutsa mpweya. Musanagwiritse ntchito ufa uliwonse, muyenera kuphika kale chitsulo chopanda kanthu. Kutentha kwa ng'anjo kuyenera kukhala 30 ° C (~ 50 ° F) kuposa kutentha komaliza kwa ufa. Muyenera kugwira zitsulo pa kutentha kokwezeka kumeneku kwa ola limodzi.
Kutentha koopsa kumeneku kumapangitsa chinyontho chotsekeredwa ndi mpweya kuti chikule ndikuthawa chitsulo chikadali chopanda kanthu. Panthawi yomwe mumagwiritsa ntchito ufa weniweni, ma pores a microscopic amakhala opanda kanthu. Sizidzaphulika panthawi yomaliza yochiritsa.
Khwerero 4: Kugwiritsa Ntchito Mwachangu (zenera la Nthawi)
Nthawi ndi mdani wanu wamkulu kamodzi pamwamba ndi woyera ndi mbiri. Mukuyang'anizana ndi zenera lokhazikika kuti mugwiritse ntchito choyambira choletsa kutulutsa mpweya komanso chovala chomaliza. Miyezo yamakampani imafuna kuti munthu agwiritse ntchito mkati mwa maola 12 atalemba mbiri. Moyenera, muyenera kumaliza ntchito yonse mkati mwa kusintha komweku komweko. Kuchedwetsa kugwiritsa ntchito kumapangitsa kuti zinc oxide yosaoneka isinthe, zomwe zingasokoneze zomatira zanu nthawi yomweyo.
Tchati chachidule: ASTM D7803 Kukonzekera Kuyenda
Khwerero |
Dzina la Njira |
Zochita Zofunika |
Cholinga Choyambirira |
1 |
Chemical Cleaning |
Ikani mankhwala ofooka a alkaline/acidic |
Chotsani mafuta, organics, ndi madontho a zinki akuthupi. |
2 |
Kusesa Kuphulika |
Gwiritsani ntchito Mohs ≤ 5 abrasives pamakona a 30 ° -60 ° |
Pangani mbiri ya nangula wamakina osataya zinki. |
3 |
Thermal Degassing |
Kuphika pa +30 ° C pamwamba pa kutentha kwa machiritso kwa ola limodzi |
Limbikitsani mpweya wotsekeka kuti muteteze mapini amtsogolo. |
4 |
Kugwiritsa Ntchito Mwachangu |
Ikani ufa mkati mwa maola 12 |
Pewani zosawoneka za zinc oxide kuti zisawononge zomatira. |
4. Galvanized vs. Galvannealed Steel: Kutchula Gawo Loyenera
Kufotokozera kwazinthu kumakhudza kwambiri kupambana kwa dongosolo lanu la duplex. Muyenera kumvetsetsa kusiyana pakati pa zitsulo zotentha-kuviika ngati malata ndi chitsulo cha galvannealed. Kuthirira kotentha kotentha kumapangitsa kuti pamwamba pakhale zinki. Nthawi zambiri imakhala ndi mawonekedwe a spangle. Galvannealing imawonjezera njira yowonjezera (kutentha) mutangosamba zinki.
Kutentha kowonjezereka kumeneku kumapangitsa chitsulo kuchokera kuchitsulo chapansi kufalikira kupita mmwamba mu zinki. Zimapanga chisakanizo cholimba cha zinc-iron alloy. Izi zimasintha mawonekedwe owoneka kukhala matte imvi kumapeto. Chofunika kwambiri, chimasintha kwambiri kugwirizana kwa zokutira pamwamba.
Chitsulo cha Galvannealed chimakhala ndi malo osawoneka bwino. Zimagwira ntchito ngati siponji yaing'ono. Zopaka utoto ndi ufa zimalumikizana mosavuta ndi aloyi iyi. Zotsatira zake, zida zomangira galvanneal nthawi zambiri zimafuna kusesa movutikira kwambiri poyerekeza ndi zida zanthawi zonse zoviyitsa. Chiwopsezo cha delamination chimatsika kwambiri.
Ogula ayenera kuganizira za kusiyana kumeneku mosamala pamene akugula. Kutchula muyezo Chitsulo cha Galvanized nthawi zambiri chimakondedwa m'malo olemera kwambiri pomwe makulidwe a zinki amafunikira. Komabe, ngati mukupanga mapanelo olondola kapena zida zamagalimoto, tchulani zida za galvannealed m'malo mwake. Imakupatsirani utoto wapamwamba kwambiri kuchokera pamzere, ndikuchepetsa mtengo wanu wokonzekera mankhwala.
Tabu yofanizira zinthu
Mbali |
Standard Galvanized Steel |
Galvannealed Steel |
Kupanga |
Zinc wakunja wosanjikiza (Eta wosanjikiza) |
Zinc-iron alloy top layer |
Maonekedwe |
Chonyezimira, nthawi zambiri chimakhala ndi spangle yowonekera |
Matte imvi, mawonekedwe ofanana |
Powder Affinity |
Pamafunika kusesa kwambiri kusesa mbiri |
Mwachilengedwe yaying'ono-nkhawa; kumamatira kwapamwamba koyambira |
Zabwino Kwambiri |
Zomangamanga zolemera, zosanjikiza zoperekera nsembe zimafunikira |
Mizere yodzipangira okha, zopaka utoto wapamwamba kwambiri |
5. Kuwunika kwa Ogulitsa: Momwe Mungasankhire Mwachidule Wothandizira Wopaka
Kupaka ufa pamwamba pa nthaka kumafuna zida zapadera komanso chidziwitso chakuya chaukadaulo. Zovala zaufa nthawi zambiri zimawononga zida za malata chifukwa zimazitenga ngati chitsulo chopanda kanthu. Muyenera kuwunika mosamalitsa omwe angakhale ogulitsa musanapereke mgwirizano.
Funsani mafunso ovuta awa a QA panthawi yowunika:
Kodi ali ndi ma uvuni ophikiratu omwe amatha kufikira kutentha kofunikira? Mashopu ang'onoang'ono ambiri alibe mphamvu ya uvuni kuti ifike 30 ° C pamwamba pa kutentha kwanthawi zonse.
Kodi zopangira malata ndi zokutira ufa zili limodzi kapena zimagwirizana bwino? Logistics nkhani. Ngati wogulitsa akuyenera kukwera zinki yopanda kanthu kudera lonselo, akhoza kuphonya zenera lakuthwa la maola 12.
Kodi amagwiritsa ntchito zoyambira zovomerezeka zoletsa kutulutsa mpweya? Ogulitsa abwino amagwiritsira ntchito zoyambira zapadera pamene chitsulo chikadali chotentha. Izi zimasindikiza pores malaya amtundu womaliza asanayambe.
Samalani ndi mbendera zofiira zomwe zangotsala pang'ono. Ngati wogulitsa anena kuti atha kuvala zitsulo zatsopano nthawi yomweyo popanda kusesa, chokanipo. Ngati akunena kuti kuwotcha kwamafuta ndi mtengo wowonjezera wosafunikira, pezani mnzanu wina. Njira zazifupi nthawi zonse zimatsogolera ku zokutira za peeling.
Mapeto
Ufa wokutira pamwamba pa zitsulo zopangira malata umapanga njira yothandiza kwambiri ya duplex, koma imakhalabe yosakhululuka. Simunganyalanyaze sayansi yakukulitsa mipweya kapena chemistry ya zinc zotakataka. Kukonzekera kodutsa pamwamba kumabweretsa kulephera kukongola komanso kuwonongeka kwa dzimbiri.
Tengani njira zotsatirazi zotsata mapulojekiti anu omwe akubwera:
Tsekani zofunikira zokonzekera za ASTM D7803 ndi SSPC-SP 16 mwachindunji mu Pempho Lanu Lamapulogalamu (RFPs).
Funsani umboni wolembedwa wa njira yochotsera gasi kwa ola limodzi kuchokera kwa amene mwasankha.
Onetsetsani kuti kuyankhulana kowonekera, nthawi yeniyeni pakati pa galvanizer yotentha-dip ndi chogwiritsira ntchito ufa kuti zitsimikizire kuti zenera la maola 12 likukwaniritsidwa.
Tsimikizirani kuti kusesa konse kumagwiritsa ntchito zopaka zolimba pang'ono kuteteza chotchinga cha zinc.
FAQ
Q: Kodi zitsulo zokutidwa ndi ufa zimachita dzimbiri?
Yankho: Simamva dzimbiri. Dzimbiri limapezeka kokha ngati zokutirazo zaphwanyidwa kwambiri kuposa chotchinga ndi nthaka. Zitha kuchitikanso ngati kutentha kosalekeza kopitilira 250 ° C (480 ° F) kumapangitsa kuti zinki yomwe ili pansiyo isathe.
Q: Kodi mutha kuvala ufa pazitsulo zakale, zamalatisi?
A: Inde, koma pamafunika kuyeretsa kwambiri mankhwala. Muyenera kuchotsa zonse zinc hydroxides ndi carbonates (imvi patina) pogwiritsa ntchito mankhwala apadera amchere kapena acidic zitsulo zisanalembedwe bwino ndikuphika kale.
Q: Chimachitika ndi chiyani ngati mwalumpha ndondomeko yophika kale?
A: Mipweya yotsekeredwa ndi chinyezi zimatuluka mwamphamvu pakuchiritsa komaliza kwa ufa. Izi zimapangitsa kuti pakhale mawonekedwe osinthika, osamalidwa odzaza ndi mapini owoneka. Mapiniwa amalola kuti chinyezi chidutse chotchinga cha ufa, ndikulepheretsa cholinga cha duplex system.
