Kodi zokutira zotentha zotentha ndi ziti?
Pali mitundu yambiri ya zokutira zotentha zopangira mbale zachitsulo ndi mizere. Malamulo amagawo pamiyezo yayikulu-kuphatikiza mikhalidwe yaku America, Japan, Europe, ndi China - ndi ofanana. Tidzasanthula pogwiritsa ntchito muyezo waku Europe wa EN 10346:2015 mwachitsanzo.
Zopaka zotentha kwambiri zimagawika m'magulu asanu ndi limodzi:
- Zinc yotentha kwambiri (Z)
- Hot-dip zinc-iron alloy (ZF)
- Zinc-aluminiyamu yotentha (ZA)
- Hot-dip aluminium-zinc (AZ)
- Hot-dip aluminium-silicon (AS)
- Hot-dip zinc-magnesium (ZM)
Tanthauzo ndi zizindikiro za zokutira zosiyanasiyana zotentha zotentha
Zingwe zachitsulo zomwe zidakonzedweratu zimamizidwa mubafa losungunuka. Zosiyanasiyana zitsulo zosungunuka mu kusamba zimatulutsa zokutira zosiyana (kupatula zokutira zachitsulo-chitsulo).
Kuyerekeza Pakati pa Kutentha kwa Dip galvanizing ndi Electrogalvanizing
1. galvanizing Process Overview
Galvanizing imatanthawuza njira yochizira pamwamba pakugwiritsa ntchito zokutira zinki pazitsulo, ma aloyi, kapena zida zina zokometsera komanso zotsutsana ndi dzimbiri. Njira zogwiritsiridwa ntchito kwambiri ndi zokometsera zotentha ndi kuzizira (electrogalvanizing).
2. Hot-Dip Galvanizing Njira
Njira yoyamba yokometsera zitsulo zazitsulo masiku ano ndikuthira phala lotentha. Hot-dip galvanizing (yomwe imadziwikanso kuti hot-dip zinki coating kapena hot-dip galvanization) ndi njira yabwino yotetezera dzimbiri lachitsulo, lomwe limagwiritsidwa ntchito makamaka pamapangidwe azitsulo m'mafakitale osiyanasiyana. Zimaphatikizapo kumiza zitsulo zochotsa dzimbiri mu zinc yosungunuka pafupifupi 500 ° C, ndikuyika zinki pamwamba pazitsulo kuti zisawonongeke. Njira yothirira madzi otentha: Kumaliza kutsuka kwa asidi → Kutsuka madzi → Kupaka madzi → Kuyanika → Kupachika popaka → Kuzizira → Kuchiza ndi mankhwala → Kuyeretsa → Kupukuta → Kuthirira kotentha koviika kotheratu.
3. Cold-kuviika Galvanizing Njira
Cold galvanizing, yomwe imadziwikanso kuti electrogalvanizing, imagwiritsa ntchito zida za electrolytic. Pambuyo pochotsa mafuta ndi kutsuka kwa asidi, zopangira zitoliro zimayikidwa mu njira yomwe ili ndi mchere wa zinki ndikugwirizanitsa ndi ma electrolytic terminal. Mbale ya zinc imayikidwa moyang'anizana ndi zoyikapo ndikulumikizidwa ku terminal yabwino. Mphamvu ikagwiritsidwa ntchito, kusuntha kolunjika kwapano kuchokera ku zabwino kupita ku zoyipa kumapangitsa kuti zinc isungidwe pazophatikiza. Zitoliro zoziziritsa kukhosi zoziziritsa kukhosi zimakonzedwanso zisanachitike.
Miyezo yaukadaulo imagwirizana ndi ASTM B695-2000 (US) ndi mfundo zankhondo za C-81562 zamakina olimbikitsa.
Kuyerekezera kwa Hot-Dip Galvanizing vs. Cold-Dip Galvanizing
Kutentha kwa dip galvanizing kumapereka kukana kwa dzimbiri kuposa kuzizira kozizira (kotchedwanso electrogalvanizing). Zovala zokhala ndi ma elekitiroti nthawi zambiri zimayambira pa 5 mpaka 15 μm mu makulidwe, pomwe zokutira zothira zotenthetsera nthawi zambiri zimapitilira 35 μm ndipo zimatha kufikira 200 μm. Hot-dip galvanizing imapereka chivundikiro chapamwamba ndi zokutira wandiweyani wopanda organic inclusions. Electrogalvanizing amagwiritsa ntchito zokutira zodzaza ndi zinki kuteteza zitsulo kuti zisawonongeke. Zovala izi zimagwiritsidwa ntchito pamtunda wotetezedwa pogwiritsa ntchito njira iliyonse yophimba, kupanga chinsalu chodzaza zinki pambuyo poyanika. Chophimba chouma chimakhala ndi zinc wambiri (mpaka 95%). Chitsulo chimapangidwa ndi zinc plating pamwamba pa nyengo yozizira, pamene kutentha kwa dip galvanizing kumaphatikizapo kupaka mapaipi achitsulo ndi zinki kupyolera mu kumiza kotentha. Njirayi imapangitsa kuti ikhale yolimba kwambiri, zomwe zimapangitsa kuti zokutirazo zisawonongeke.
Kodi mungasiyanitse bwanji galvanizing yotentha ndi kuzizira?
1. Chizindikiritso Chowoneka
Malo okhala ndi malata otentha amawoneka olimba pang'ono, akuwonetsa ma watermark, madontho, ndi timadontho ting'onoting'ono, makamaka kumapeto kwa chogwiriracho. Maonekedwe onse ndi silvery-white.
Ma electrogalvanized (ozizira-galvanized) amakhala osalala, makamaka achikasu-wobiriwira mumtundu, ngakhale obiriwira, otuwa-woyera, kapena oyera ndi sheen wobiriwira amatha kuwoneka. Malowa nthawi zambiri samawonetsa zinc nodules kapena clumping.
2. Kusiyanitsa ndi Njira
Kuthira madzi otentha kumaphatikizapo masitepe angapo: kutsitsa mafuta, pickling asidi, kumizidwa ndi mankhwala, kuyanika, ndipo pamapeto pake kumizidwa mu zinki wosungunuka kwa nthawi yeniyeni musanachotse. Njirayi imagwiritsidwa ntchito pazinthu monga mapaipi opaka malata otentha.
Cold galvanizing, komabe, kwenikweni ndi electrogalvanizing. Imagwiritsa ntchito zida za electrolytic pomwe chogwirira ntchito chimawotcha ndikuwotcha musanamizidwe mumchere wa zinki. Cholumikizidwa ndi zida za electrolytic, chogwiriracho chimayika wosanjikiza wa zinki kudzera mumayendedwe olunjika apano pakati pa ma elekitirodi abwino ndi oipa.
Nthawi yotumiza: Oct-01-2025
