Umahluko phakathi kwe-cold-dip galvanizing kunye ne-hot-dip galvanizing ekucutshungulweni kwemibhobho yentsimbi

I-Hot Dip VS I-Cold Dip Galvanizing

Ukugalela i-hot-dip kunye nokugalela i-cold galvanizing zombini ezi ndlela zokugalela intsimbi nge-zinc ukuthintela ukugqwala, kodwa zahluke kakhulu kwinkqubo, ukuqina, kunye neendleko. Ukugalela i-hot-dip kubandakanya ukugalela intsimbi kwibhafu enyibilikisiweyo ye-zinc, okwenza umaleko we-zinc oqinileyo, onamatheliswe ngamakhemikhali. Ukugalela i-cold galvanizing, kwelinye icala, yinkqubo apho kufakwa khona ungqimba olutyebileyo lwe-zinc, ngokufuthi ngokutshiza okanye ngokupeyinta.

Kwinkqubo yokucubungula imibhobho yentsimbi, ukugaya i-galvanizing yinkqubo ebalulekileyo yokuphucula ukumelana nokugqwala, eyahlulwe ngokubanzi ibe ziindlela ezimbini: ukugaya i-hot-dip (HDG) kunye nokugaya i-cold (Electro-Galvanizing, EG). Kukho umahluko omkhulu phakathi kwezi zimbini ngokwemigaqo yokucubungula, iimpawu zokugquma, kunye neemeko ezifanelekileyo. Oku kulandelayo luhlalutyo oluneenkcukacha oluvela kubukhulu beendlela zokucubungula, imigaqo, uthelekiso lokusebenza, kunye namacandelo okusetyenziswa:

1. Ukuthelekiswa kweendlela kunye nemigaqo yokucubungula

1. I-hot-dip galvanizing (HDG)

Inkqubo yokucubungula: Umbhobho wentsimbi untywiliselwa kulwelo lwezinc olunyibilikisiweyo, kwaye i-zinc kunye nentsimbi ziyasabela ukuze zenze umaleko we-alloy.
Umgaqo wokwakheka kwengubo:
Ukubopha ngesinyithi: I-zinc enyibilikisiweyo idibana ne-matrix yombhobho wentsimbi ukuze yenze umaleko we-Fe-Zn (Γ phase Fe₃Zn₁₀, δ phase FeZn₇, njl.njl.), kwaye umaleko ongaphandle ngumaleko we-zinc ococekileyo.
2. Ukucoca nge-galvanizing ebandayo (ukucoca nge-electrogalvanizing, EG)
Inkqubo yokucubungula: Umbhobho wentsimbi untywiliselwa kwi-electrolyte equlethe i-ion ze-zinc njenge-cathode, kwaye umaleko we-zinc ubekwa yi-direct current.
Umgaqo wokwakheka kwengubo:
Ukufakwa kwe-electrochemical: Ii-ion ze-zinc (Zn²⁺) zincitshiswa zibe zii-athomu ze-zinc zii-elektroni kumphezulu we-cathode (umbhobho wentsimbi) ukuze zenze uqweqwe olufanayo (ngaphandle komaleko we-alloy).

2. Uhlalutyo loMmahluko weNkqubo

1. Ulwakhiwo lokwaleka

Ukucoca nge-hot-dip:
Ulwakhiwo oluneeleyara: i-substrate → i-Fe-Zn alloy layer → i-zinc maleko ecocekileyo. I-alloy layer inobunzima obuphezulu kwaye inika ukhuseleko olongezelelweyo.
Ukuqinisa ngobushushu obubandayo:
Umaleko omnye we-zinc, akukho tshintsho lwe-alloy, kulula ukubangela ukusasazeka kokugqwala ngenxa yomonakalo woomatshini.
 
2. Uvavanyo lokuncamathela
Ukufakwa kwe-galvanizing eshushu: Emva kovavanyo lokugoba okanye uvavanyo lwesando, akukho lula ukuyisusa (umaleko we-alloy ubotshelelwe ngokuqinileyo kwi-substrate).
Ukugaya ngentsimbi ebandayo: Ukwaleka kunokuwa ngenxa yamandla angaphandle (njengokukrazula emva kokukrwela).
 
3. Indlela yokumelana nokugqwala
Ukucoca nge-hot-dip:
Ukhuseleko lwe-anode ye-Sacrificial + barrier: Umaleko we-zinc uyaqala ukubola, kwaye umaleko we-alloy uyalibazisa ukusasazeka komhlwa kwi-substrate.
Ukuqinisa ngobushushu obubandayo:
Ixhomekeke kakhulu kukhuseleko lwemiqobo, kwaye isiseko sithambekele ekuboleni emva kokuba i-coating yonakele.

3. Ukukhetha imeko yesicelo

3. Ukukhetha imeko yesicelo

Iimeko ezifanelekileyo kwiipayipi zentsimbi ezifakwe isinyithi ezishushu
Iindawo ezinobungozi:izakhiwo zangaphandle (iinqaba zokuhambisa, iibhulorho), imibhobho engaphantsi komhlaba, izibonelelo zaselwandle.
Iimfuno zokuqina okuphezulu:ii-scaffolding zezakhiwo, ii-guardrails zeendlela ezinkulu.
 
Iimeko ezifanelekileyo kwiipayipi zentsimbi ezifakwe kwi-cold-dip galvanized
Indawo yokugqwala okuthambileyo:umbhobho wombane wangaphakathi, isakhelo sefenitshala, izixhobo zemoto.
Iimfuno eziphezulu zokubonakala:indlu yezixhobo zasekhaya, imibhobho yokuhombisa (kufuneka umphezulu ogudileyo kunye nombala ofanayo).
Iiprojekthi ezixabisa kakhulu:izibonelelo zexeshana, iiprojekthi ezingabizi kakhulu.
Ixesha leposi: Juni-09-2025