Prix FOB
Obtenir le dernier prix|
- Minimum Order
Pays:
China
N ° de modèle:
-
Prix FOB:
Localité:
-
Prix de commande minimale:
-
Commande minimale:
-
Packaging Detail:
-
Heure de livraison:
-
Capacité de Fournir:
-
Payment Type:
-
Groupe de produits :
-
Personne àcontacter Helen
Beijing, Beijing
Process flow:
Galvanizing pieces
inspection-racking-pickling-rinsing-flux galvanizing
assistant-drying-hot-dip galvanizing-water
cooling-passivation-inspection- finished product
Â
Process description:
Pickling: function is to clear oxide scale on
surface and to guarantee the surface quality. It uses hydrochloric
acid with concentration *2%**8% to pickle galvanizing parts under
temperature *8ºC**1ºC and pickling time is about ****0min. There
are 4 sets of pickling
tanks.
Rinsing: function is to reduce the influences
of HCl and Fe3+ stick to the surface of galvanizing parts on the
subsequent process. Water supply is from the water cooling tank and
water outlet is continuous overflow.
Flux galvanizing assistant: function is to
prevent the galvanizing parts to be oxidized in drying procedure
and resolve surface of galvanizing zinc and zinc oxide in hot-dip
galvanizing procedure. Flux solution is zinc ammonium chloride
which is made of *0% of ZnCl2 and *0% of NH4Cl by proportion
3:1, and flux galvanizing assistant time is *-
5min under temperature *0ºC**5ºC.
Drying: function is to remove moisture after
flux galvanizing assistant procedure. Drying temperature is **0ºC
and drying time is about 1min.
Hot-dip galvanizing: firstly solute zinc ingot
by zinc pot with temperature **0ºC and remove scum manually. Then
dip galvanizing parts completely to form zinc ash on the surface
and then remove zinc ash and scum again by tools. Galvanizing
thickness is about 5μm.
Water cooling: function is to cool galvanizing
parts after hot-dipped. Size of cooling tank is same with rinsing
tank and pickling tank. Cooling time is about *0S**0S. Part of
water outlet is used for rinsing tank and part is reused after
cooled by cooling tower.
Passivation: function is to creat protective film to slow
corrosion. Passivation solution is made of chromate,
Water-soluble polyacrylonitrile and little sulfuric
acid.
Remark: we are manufacturer for steel pipe making
machine, strip/coil slitting line, sheet shearing machine, hot dip
galvanizing line, etc. If you are interested with our
products, pls kindly send me your requirement by email
(helen(at)wanxinocean.com). Also you can chat with me by WhatsApp
or Wechat, which are same with my mobile number: zero zero eight
six one eight five three eight one two nine two eight
six.Â
​​​​​​
| Pays: | China |
| N ° de modèle: | - |
| Prix FOB: | Obtenir le dernier prix |
| Localité: | - |
| Prix de commande minimale: | - |
| Commande minimale: | - |
| Packaging Detail: | - |
| Heure de livraison: | - |
| Capacité de Fournir: | - |
| Payment Type: | - |
| Groupe de produits : | - |
