Galvanizing na-ezo aka na nkà na ụzụ ọgwụgwọ elu nke ịkwanye akwa zinc n'elu ígwè, alloy ma ọ bụ ihe ndị ọzọ na-eme ka ọ bụrụ ihe na-eme ka ọ dị mma na mgbochi nchara. Ụzọ isi eji eme ihe bụ ọkụ ọkụ na-ekpo ọkụ.
Zinc dị mfe soluble na acid yana alkali, n'ihi ya, a na-akpọ ya amphotropic metal. Zinc na-agbanwe ntakịrị na ikuku akọrọ. N'ime ikuku iru mmiri, a na-emepụta ihe nkiri alkaline zinc carbonate dị ukwuu n'elu zinc surface. Na sọlfọ dioxide, hydrogen sulfide na mmiri ikuku, zinc corrosion eguzogide adịghị mma, karịsịa na elu okpomọkụ na elu iru mmiri nwere organic acid ikuku, zinc mkpuchi dị mfe corrode. The ọkọlọtọ electrode ikike nke zinc bụ-0.76V, n'ihi na ígwè matrix, zinc mkpuchi bụ nke anodic mkpuchi, ọ na-tumadi iji gbochie corrosion nke ígwè, ya na-echebe ọrụ na mkpuchi ọkpụrụkpụ bụ nnọọ njikọ chiri anya.Zinc mkpuchi mgbe ọgwụgwọ passivation, ntụpọ ma ọ bụ kpuchie ya na ihe nchebe ọkụ, nwere ike imeziwanye nchebe ya na ịchọ mma.
Oyi galvanizing
Cold galvanizing, nke a na-akpọkwa electrogalvanizing, bụ ojiji nke electrolytic akụrụngwa mgbe mmanụ, pickling, zinc nnu n'ime ngwọta, na jikọọ na-adịghị mma electrode nke electrolytic akụrụngwa, na-abụghị nke zinc efere, jikọọ na nti electrode nke electrolytic. ike akụrụngwa, na-eji ugbu a site na nti na-adịghị mma ga-edebe akwa akwa nke zinc na ọkpọkọ, oyi plating ọkpọkọ na-akpa nhazi mgbe galvanizing.
Mechanical galvanized
N'ime igwe na-agbagharị agbagharị nke nwere plating, bọọlụ iko, ntụ ntụ zinc, mmiri na onye na-akwalite, bọọlụ iko dị ka mmetụta na-atụgharị na drum, esemokwu na hama n'elu plating na-emepụta ike anụ ahụ.N'okpuru ọrụ nke onye na-akwalite kemịkalụ, zinc ntụ ntụ a na-ekpuchi ya "ịgbado ọkụ oyi" n'elu mkpuchi ahụ, na-eme ka ọ dị nro, uwe na nkọwa zuru ezu nke nwere ụfọdụ ọkpụrụkpụ.
Hot-galvanized
Ụzọ bụ isi nke ígwè efere elu galvanizing bụ ọkụ-mikpu galvanizing.
A na-emepụta galvanizing na-ekpo ọkụ site na ụzọ ochie ma bụrụ otu narị afọ na iri asaa ebe ọ bụ na e jiri ya mee ihe na ụlọ ọrụ na 1836. Otú ọ dị, a na-emepụta ụlọ ọrụ na-ekpo ọkụ na-ekpo ọkụ na nnukwu ọnụ ọgụgụ yana mmepe ngwa ngwa nke ígwè na-ekpo ọkụ na-ekpo ọkụ. n'ime afọ iri atọ gara aga.
The mmepụta usoro nke na-ekpo ọkụ galvanized efere tumadi na-agụnye: mbụ efere tupu plating na-ekpo ọkụ itinye post-ọgwụgwọ okokụre ngwaahịa nnyocha, wdg. Dị ka àgwà, dị ka dị iche iche plating ọgwụgwọ usoro, na-ekpo ọkụ itinye galvanizing usoro na-ekewa n'ime n'èzí akara. na ịkagbu n'ime ahịrị.
Oge nzipu: Mee-13-2022