Ukushisa okushisayokuyindlela esetshenziswa kabanzi yokuvikela insimbi nensimbi ekugqwaleni. Le nqubo ihilela ukucwilisa insimbi ebhavini le-zinc encibilikisiwe, eyakha ungqimba oluqinile noluvikelayo. Insimbi ehlanganisiwe ephumayo imelana kakhulu nokugqwala futhi ingamelana nezimo zemvelo ezinzima. Kodwa-ke, ukuthola imiphumela emihle kudinga ukunamathela ezidingweni ezithile kanye nemikhuba emihle kakhulu. Lesi sihloko sigxila ezidingweni ezibalulekile ze-hot-dip galvanizing ukuqinisekisa imiphumela esezingeni eliphezulu nehlala isikhathi eside.
1. Ukukhethwa Kwezinto Ezibalulekile
Isidingo sokuqala sokufaka i-hot-dip galvanizing ukukhetha izinto ezifanele. Akuzona zonke izinsimbi ezifanele le nqubo. Ngokuvamile, insimbi nensimbi yizona zinto eziyinhloko. Ukwakheka kwensimbi kungathinta kakhulu ikhwalithi yayo.ukugaya nge-galvanizingIsibonelo, ukuba khona kwezinto ezifana ne-silicon ne-phosphorus ensimbini kungathinta ukujiya nokubukeka kwengubo ye-zinc. Ngakho-ke, kubalulekile ukukhetha izinto ezinezinhlanganisela ezilawulwayo nezaziwayo ukuze kutholakale imiphumela ehambisanayo.
2. Ukulungiselela Okungaphezulu
Ukulungiselela ubuso kuyisinyathelo esibalulekileukucwilisa okushisayoinqubo. Ubuso bensimbi kumele buhlanzeke futhi bungabi nezinto ezingcolisayo ezifana namafutha, amafutha, ukugqwala, kanye nesikali sokugaya. Noma yikuphi ukungcola kungavimbela i-zinc ukuthi inamathele kahle, okuholela ekhwalithini elibi lokumboza. Ukulungiswa kobuso ngokuvamile kuhilela izigaba ezintathu:
- Ukususa amafutha: Ukususa ukungcola okungokwemvelo kusetshenziswa izixazululo ze-alkaline noma izinyibilikisi.
- Ukukha: Ukususa ukugqwala kanye nezinga kusetshenziswa izixazululo ezine-asidi, ngokuvamile i-hydrochloric noma i-sulfuric acid.
- Ukufudumeza: Ukusetshenziswa kwesisombululo sokufudumeza, ngokuvamile i-zinc ammonium chloride, ukuvimbela ukuminyana ngaphambi kokucwiliswa ku-zinc encibilikisiwe.
Ukulungiswa kahle kwendawo kuqinisekisa ukubopha okuqinile phakathi kwensimbi kanye noqweqwe lwe-zinc, okuthuthukisa ukuqina nokusebenza kahle kwe-galvanizing.
3. Ukwakheka Nokushisa Kwebhavu
Ukwakheka kanye nokushisa kwebhati le-zinc kuyizinto ezibalulekile enqubweni yokugaya ngokushisa. Ibhati le-zinc kufanele liqukathe okungenani i-zinc emsulwa engu-98%, kanti amaphesenti asele aqukethe izinto ezifana ne-aluminium, i-lead, kanye ne-antimony ukuthuthukisa izakhiwo zebhati. Izinga lokushisa lebhati livame ukuba phakathi kuka-820°F no-860°F (438°C kuya ku-460°C). Ukugcina izinga lokushisa elifanele kubalulekile ukuze kufezwe i-coating efanayo nekhwalithi ephezulu. Ukuphambuka kungabangela amaphutha njengobukhulu obungalingani, ukunamathela okubi, kanye nokungaguquguquki kobuso.
4. Isikhathi Sokucwiliswa
Isikhathi sokucwiliswa ebhavini le-zinc singenye ipharamitha ebalulekile. Kuncike ekujiyeni kanye nosayizi we-insimbi eqiniswayoNgokuvamile, insimbi ifakwa emanzini ize ifike ezingeni lokushisa lokugeza, okuvumela i-zinc ukuthi yakhe isibopho sensimbi nensimbi. Ukucwiliswa ngokweqile kungaholela ekujiyeni ngokweqile kokumboza, kanti ukucwiliswa ngaphansi kokumboza kungaholela ekuvikelekeni okunganele. Ngakho-ke, ukulawula isikhathi sokucwiliswa kuyadingeka ukuze kufezwe ukujiya nekhwalithi yokumboza oyifunayo.
5. Ukwelashwa Ngemva Kokugaywa Nge-Galvanizing
Ngemva kokuba insimbi isusiweukugeza nge-zinc, idlula ekwelashweni ngemva kokufakwa kwe-galvanizing ukuze kuthuthukiswe izakhiwo ze-coating. Lokhu kwelashwa kungafaka phakathi ukucima emanzini noma ukupholisa emoyeni ukuze kuqiniswe i-zinc coating ngokushesha. Ngaphezu kwalokho, ukwelashwa kokudlulisa umoya kungasetshenziswa ukuvimbela ukwakheka kokugqwala okumhlophe, uhlobo lokugqwala okungenzeka ezindaweni ezisanda kufakwa kwe-galvaning. Ukuphathwa kahle nokugcinwa kwezinto ze-galvaning nakho kubalulekile ukuze kugcinwe ubuqotho be-coating.
6. Ukuhlolwa Nokulawulwa Kwekhwalithi
Okokugcina, ukuhlolwa okuphelele nokulawulwa kwekhwalithi kubalulekile ukuqinisekisa impumelelo yeukucwilisa okushisayoinqubo. Ukuhlolwa kuvame ukuhilela ukuhlolwa okubonakalayo, ukulinganisa ukujiya, kanye nokuhlolwa kokunamathela. Izindinganiso ezifana ne-ASTM A123/A123M zinikeza iziqondiso zokujiya nokukala okwamukelekayo kokumboza. Ukunamathela kulezi zindinganiso kuqinisekisa ukuthi imikhiqizo ehlanganisiwe iyahlangabezana nezindinganiso zokusebenza ezidingekayo futhi inikeza isivikelo esihlala isikhathi eside ekugqwaleni.
Isiphetho
Ukufaka i-hot-dip galvanizing kuyindlela ephumelelayo yokuvikela insimbi nensimbi ekugqwaleni, kodwa kudinga ukunakwa ngokucophelela emininingwaneni kanye nokunamathela ezidingweni ezithile. Kusukela ekukhetheni izinto kanye nokulungiswa kwendawo kuya ekubunjweni kokugeza, isikhathi sokucwiliswa, kanye nokwelashwa ngemva kokufaka i-galvanizing, isinyathelo ngasinye sidlala indima ebalulekile ekufezeni izembozo ze-galvaning ezisezingeni eliphezulu nezihlala isikhathi eside. Ngokulandela le mikhuba emihle kakhulu kanye nokugcina ukulawulwa kwekhwalithi okuqinile, abakhiqizi bangaqinisekisa ukuthi imikhiqizo yabo ye-galvaning iletha ukusebenza okuhle kakhulu kanye nokuphila isikhathi eside.
Isikhathi sokuthunyelwe: Septhemba 18-2024