Kutentha-kuviika galvanizingndi njira yomwe imagwiritsidwa ntchito kwambiri poteteza zitsulo ndi chitsulo kuti zisawonongeke. Kuchita zimenezi kumaphatikizapo kumiza chitsulo mumtsuko wa zinki wosungunuka, womwe umapanga zokutira zolimba, zoteteza. Chitsulo chopangidwa ndi malata chimalimbana kwambiri ndi dzimbiri ndipo chimatha kupirira zovuta zachilengedwe. Komabe, kupeza zotsatira zabwino kumafunikira kutsatira zofunikira zenizeni komanso machitidwe abwino. Nkhaniyi ikuyang'ana pa zofunikira zopangira galvanizing ya hot dip kuti zitsimikizidwe kuti zikhale zapamwamba komanso zolimba.
1. Kusankha Zinthu
Chofunikira choyamba cha galvanizing yotentha ndi kusankha zipangizo zoyenera. Sizitsulo zonse zomwe zili zoyenera kuchita izi. Nthawi zambiri, chitsulo ndi chitsulo ndizomwe zimasankhidwa. The zikuchokera zitsulo zingakhudze kwambiri khalidwe lagalvanizing. Mwachitsanzo, kukhalapo kwa zinthu monga silicon ndi phosphorous muzitsulo kumatha kukhudza makulidwe ndi mawonekedwe a zokutira zinki. Chifukwa chake, ndikofunikira kusankha zida zokhala ndi nyimbo zoyendetsedwa bwino komanso zodziwika kuti mupeze zotsatira zofananira.
2. Kukonzekera Pamwamba
Kukonzekera pamwamba ndi sitepe yofunika kwambirikutentha-kuviika galvanizingndondomeko. Pamwamba pazitsulo ziyenera kukhala zoyera komanso zopanda zowononga monga mafuta, mafuta, dzimbiri, ndi sikelo ya mphero. Zonyansa zilizonse zimatha kulepheretsa zinki kuti isamamatire bwino, zomwe zimapangitsa kuti zisatseke bwino. Kukonzekera pamwamba kumakhala ndi magawo atatu:
- Degreasing: Kuchotsa zonyansa pogwiritsa ntchito mankhwala a alkaline kapena zosungunulira.
- Pickling: Kuchotsa dzimbiri ndi sikelo pogwiritsa ntchito asidi, nthawi zambiri hydrochloric kapena sulfuric acid.
- Fluxing: Kugwiritsa ntchito flux solution, nthawi zambiri zinc ammonium chloride, kuteteza oxidation musanamizidwe mu zinki wosungunuka.
Kukonzekera bwino kwa pamwamba kumatsimikizira mgwirizano wamphamvu pakati pa zitsulo ndi zokutira za zinki, kupititsa patsogolo kulimba ndi mphamvu ya galvanizing.
3. Bafa Mapangidwe ndi Kutentha
Kapangidwe ndi kutentha kwa zinki kusamba ndi zinthu zofunika kwambiri pa kutentha-kuviika galvanizing ndondomeko. Bafa la zinki liyenera kukhala ndi zinki zosachepera 98%, ndipo gawo lotsala likhale ndi zinthu monga aluminiyamu, lead, ndi antimony kuti nsato ikhale yabwino. Kutentha kosambira nthawi zambiri kumakhala pakati pa 820°F ndi 860°F (438°C mpaka 460°C). Kusunga kutentha koyenera ndikofunikira kuti mukwaniritse zokutira yunifolomu komanso zapamwamba. Kupatuka kungayambitse zolakwika monga makulidwe osagwirizana, kusamata bwino, komanso kuuma kwa pamwamba.
4. Nthawi Yomiza
Nthawi yomizidwa mumadzi osambira a zinki ndi gawo lina lofunikira. Zimatengera makulidwe ndi kukula kwakezitsulo kukhala malata. Kawirikawiri, chitsulocho chimamizidwa mpaka kufika kutentha kwa kusamba, kulola zinki kupanga mgwirizano wazitsulo ndi chitsulo. Kumizidwa mopitirira muyeso kungayambitse makulidwe ochuluka, pamene kusamizidwa kungayambitse chitetezo chokwanira. Choncho, kulamulira molondola kwa nthawi yomiza ndikofunikira kuti mukwaniritse makulidwe ndi khalidwe la ❖ kuyanika.
5. Chithandizo cha Pambuyo pa Galvanizing
Pambuyo zitsulo kuchotsedwazinc kusamba, amapatsidwa chithandizo chamankhwala pambuyo pa galvanizing kuti awonjezere mphamvu zokutira. Mankhwalawa angaphatikizepo kuzimitsa m'madzi kapena kuziziritsa kwa mpweya kuti mulimbikitse zokutira zinki mwachangu. Kuonjezera apo, mankhwala oletsa tizilombo toyambitsa matenda angagwiritsidwe ntchito pofuna kupewa kupangika kwa dzimbiri loyera, mtundu wa dzimbiri lomwe lingathe kuchitika pamalo omwe angopangidwa kumene. Kusamalira bwino ndi kusungirako zida zopangira malata ndizofunikiranso kuti zokutirazo zikhalebe zolimba.
6. Kuyang'anira ndi Kuwongolera Ubwino
Pomaliza, kuwunika mozama komanso kuwongolera bwino ndikofunikira kuti zitsimikizire kuti ntchitoyo ikuyenda bwinokutentha-kuviika galvanizingndondomeko. Kuyendera nthawi zambiri kumaphatikizapo kuwunika kowonekera, kuyeza makulidwe, ndi kuyesa kumamatira. Miyezo monga ASTM A123/A123M imapereka malangizo a makulidwe ovomerezeka ndi mtundu wa zokutira. Kutsatira mfundozi kumatsimikizira kuti zopangira malata zimakwaniritsa zofunikira zogwirira ntchito komanso zimapereka chitetezo chokhalitsa ku dzimbiri.
Mapeto
Hot-dip galvanizing ndi njira yabwino yotetezera zitsulo ndi chitsulo kuti zisawonongeke, koma zimafuna chidwi chambiri ndikutsatira zofunikira zenizeni. Kuchokera pa kusankha zinthu ndi kukonza pamwamba mpaka kusamba, nthawi yomiza, ndi mankhwala opaka malata, sitepe iliyonse imakhala ndi gawo lofunika kwambiri kuti tipeze zokutira zamagalasi zapamwamba komanso zolimba. Potsatira njira zabwinozi ndikuwongolera mosamalitsa, opanga amatha kuwonetsetsa kuti zopangira malata zimagwira ntchito bwino komanso kukhala ndi moyo wautali.
Nthawi yotumiza: Sep-18-2024