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Lead and Zinc Bath for continuous wire galvanizing line

(-----) 2006

I am starter in the processes of Zinc galvanizing line of Wire industry. We are planning to put up new line for Wire Galvanizing.

Interestingly what we find in this industry that there is no engineering back up for the design of Wire galvanizing Line, I would like to know how the pitch distance between two wire is calculated. How is the dipping time of wire in lead or zinc bath calculated?

As for my personal information , I am a Electronics & Telecommunication Engineer passed out in 1976. At present I am working with a company, Product is Wire Galvanizing.
Please help me out to understand the processes.

Asim Roy
wire producer - Kolkata, West Bengal, INDIA

July 2, 2009

Dear Mr. Ray,

you're right to say that there is no such engrg. back up setting up a wire plant. Presently so many plants are started and many of the plants are established. Maximum are going good.
All that is required is sincerity and methodical approach and clear idea the quality you require. A trouble free plant can be organised with proper engrg. support.

Pl let me know the actual problem you are facing.


- KOLKATA, India

May 18, 2011

Dear Mr. Ray,
Please go back to basic physics and chemistry. The purpose of the lead bath is to heat the wire up to the desired temperature. Therefore the basic consideration is the bath temperature and retention time in the bath. Retention time is achieved through the combination of length of lead bath and the speed of running wire. It should be such that the wire achieves desired temperature before leaving the bath. The same effect is achievable with Air Furnace but the length of the furnace would be nearly three times that of lead bath. The heat transfer in lead bath being superior to air furnace. Similarly the zinc bath length is planned taking into consideration the type of coating (heavy, light, etc.) that one wants to achieve. As you are engaged in the same industry and an engineer, once you start from the basics, things will become clear.

Dhurjati Basu
- Kolkata

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