finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
(current
topics)
topic 4082

Can't get consistent Brightness in galvanizing


(1999)

We have a line for hot dip galvanizing of steel wire, and I have two questions about it:

1-When we galvanize low carbon steel wire with 50-60 gr Zinc /m2. can't get a uniform bright surface, we get alternating bright and matte finish zones. Maybe it could be the alloy layers that appears in the surface? Somebody had this problem and know the solution?

2-We are thinking to install an electroplating line for steel wire also. (because the surface appearance is so important for us.) What process will be the more adequate? Cyanide or non cyanide bath?

Thanks a lot in advance.

VICTOR MENDOZA PEREZ  
- CALLAO - PERU


(2000)

Dear Mr. Mendoza Perez,

you should have a look to the cooling after wiping of the wire. Only a proper cooling will give you a bright surface.

As you get bright surfaces in some areas it does not look like a problem with pretreatment or wiping.

Best regards,

Peter Kordt
- Hagen, Germany


(2002)

Brightness increases on the finer particle size of the Zinc and by faster cooling you reduce the particle size. This may also be dependent on Steel Chemistry (Silicon ?) or Flux concentration/time. Can you comment on these?

Regards,

Sudhir Joshi
- Mumbai, Maharashtra, India



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView CURRENT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.