Kedu ihe mkpuchi mkpuchi na-ekpo ọkụ na-ekpo ọkụ?
Enwere ọtụtụ ụdị mkpuchi mkpuchi na-ekpo ọkụ maka efere ígwè na ibe. Iwu nhazi ọkwa n'ofe isi-gụnyere ụkpụrụ mba America, Japanese, Europe na China—yiri. Anyị ga-enyocha site na iji ọkọlọtọ European EN 10346: 2015 dịka ọmụmaatụ.
Ihe mkpuchi na-ekpo ọkụ na-ekpo ọkụ na-adaba na ngalaba isii:
- Zinc dị ọcha na-etinye ọkụ (Z)
- Igwe na-ekpo ọkụ zinc-iron alloy (ZF)
- Ihe na-ekpo ọkụ zinc-aluminom (ZA)
- Aluminom-zinc na-ekpo ọkụ (AZ)
- Aluminom-silicon na-ekpo ọkụ (AS)
- Zinc-magnesium na-ekpo ọkụ (ZM)
Nkọwa na njirimara nke mkpuchi mkpuchi ọkụ dị iche iche
A na-emikpu ibe nchara e gwọchara ya n'ime bat a wụrụ awụ. Ọla a wụrụ awụ dị iche iche dị na bat ahụ na-emepụta mkpuchi dị iche iche (ma ewezuga mkpuchi zinc-iron alloy).
Ntụle n'etiti Hot-Dip Galvanizing na Electrogalvanizing
1. Nyochaa Usoro Galvanizing
Galvanizing na-ezo aka na usoro ọgwụgwọ elu nke itinye mkpuchi zinc na ọla, alloys, ma ọ bụ ihe ndị ọzọ maka ebumnuche ịchọ mma na mgbochi corrosion. Ụzọ ndị a na-ejikarị eme ihe bụ ikpo ọkụ na-ekpo ọkụ na oyi galvanizing (electrogalvanizing).
2. Usoro Galvanizing Hot-Dip
Ụzọ bụ isi maka galvanizing nchara mpempe akwụkwọ na-ebupụta elu taa bụ galvanizing na-ekpo ọkụ. Galvanizing na-ekpo ọkụ na-ekpo ọkụ (nke a makwaara dị ka mkpuchi zinc na-ekpo ọkụ ma ọ bụ na-ekpo ọkụ na-ekpo ọkụ) bụ usoro dị irè nke nchedo corrosion metal, nke a na-ejikarị eme ihe na ụlọ ọrụ nhazi ígwè n'ofe ụlọ ọrụ dị iche iche. Ọ na-agụnye iminye ihe nchara e wepụrụ nchara n'ime zinc gbazere n'ihe dịka 500 Celsius, na-etinye akwa zinc n'elu igwe iji nweta nguzogide corrosion. Usoro galvanizing na-ekpo ọkụ na-ekpo ọkụ: Emechachara ngwaahịa acid ịsacha → Mmiri mmiri → Ngwa nke flux → Drying → Hanging for cover → Cooling → Chemical treatment → Cleaning → Polishing → Hot-dip galvanizing full.
3. Usoro Galvanizing oyi na-atụ
Oyi galvanizing, makwaara dị ka electrogalvanizing, utilizes electrolytic akụrụngwa. Mgbe ịsachara na ịsa ahụ acid, a na-etinye ọkpọkọ ọkpọkọ na ngwọta nwere nnu zinc ma jikọta ya na njedebe na-adịghị mma nke ngwa electrolytic. A na-edobe efere zinc n'ihu ihe ndị a na-arụ ọrụ ma jikọọ ya na njedebe dị mma. Mgbe etinyere ike, mmegharị eduzi nke ugbu a site na nti ruo nke na-adịghị mma na-eme ka zinc tinye na akwa akwa. Ngwunye ọkpọkọ oyi-galvanized na-aga nhazi tupu galvanization.
Ụkpụrụ nka na ụzụ kwekọrọ na ASTM B695-2000 (US) na nkọwa ndị agha C-81562 maka galvanization n'ibu.
Ntụle nke Hot-Dip Galvanizing vs. Cold-Dip Galvanizing
Galvanizing na-ekpo ọkụ na-enye nguzogide corrosion dị elu karịa galvanizing oyi-mikpu (nke a makwaara dị ka electrogalvanizing). Ihe mkpuchi electrogalvanized na-adịkarị site na 5 ruo 15 μm n'ogo, ebe mkpuchi galvanized na-ekpo ọkụ na-adịkarị karịa 35 μm ma nwee ike iru 200 μm. Galvanizing na-ekpo ọkụ na-enye mkpuchi dị elu na mkpuchi dị oke nke na-enweghị ntinye organic. Electrogalvanizing na-arụ ọrụ mkpuchi jupụtara zinc iji chebe ọla site na corrosion. A na-etinye ihe mkpuchi ndị a n'elu ebe a na-echebe site na iji usoro mkpuchi ọ bụla, na-eme akwa akwa zinc jupụtara mgbe akpọnwụchara. Ihe mkpuchi a mịrị amị nwere nnukwu ọdịnaya zinc (ruo 95%). A na-enweta ọla kọpa zinc n'elu ya n'okpuru ọnọdụ jụrụ oyi, ebe galvanizing na-ekpo ọkụ na-agụnye ikpuchi ọkpọkọ ígwè na zinc site na imikpu mmiri na-ekpo ọkụ. Usoro a na-amịpụta adhesion siri ike nke ukwuu, na-eme ka mkpuchi ahụ na-eguzogide ike nke ukwuu.
Kedu ka esi amata ọdịiche na-ekpo ọkụ na-ekpo ọkụ na galvanizing oyi?
1. Nchọpụta Anya
Ebe ndị na-ekpo ọkụ na-ekpo ọkụ na-apụta n'ozuzu ha, na-egosipụta akara mmiri, drips na nodules-nke a na-ahụ anya n'otu njedebe nke ọrụ ahụ. Ọdịdị n'ozuzu ya bụ ọlaọcha-ọcha.
Elu electrogalvanized (oyi-galvanized) na-adị ire ụtọ, nke bụ isi na-acha odo odo-acha akwụkwọ ndụ, ọ bụ ezie na iridescent, bluish-white, ma ọ bụ ọcha nwere ncha ndụ ndụ nwekwara ike ịpụta. Elu ndị a na-egosipụtakarị enweghị zinc nodules ma ọ bụ clumping.
2. Ịmata ọdịiche site na Usoro
Igwe ọkụ na-ekpo ọkụ na-ekpo ọkụ na-agụnye usoro dị iche iche: nkwụsịtụ, nchịkọta acid, imi mmiri mmiri, ihicha, na n'ikpeazụ imikpu n'ime zinc a wụrụ awụ maka oge a kapịrị ọnụ tupu e wepụ ya. A na-eji usoro a eme ihe dị ka ọkpọkọ galvanized na-ekpo ọkụ.
Otú ọ dị, oyi galvanizing bụ n'ezie electrogalvanizing. Ọ na-eji akụrụngwa electrolytic ebe workpiece na-enweta nbipu na pickling tupu imikpu n'ime mmiri nnu zinc. Ejikọtara ya na ngwa electrolytic, workpiece na-edobe oyi akwa zinc site na mmegharị nke ugbu a n'etiti electrodes dị mma na nke na-adịghị mma.
Oge nzipu: Ọkt-01-2025
