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topic 42394

What exactly is a non oxidizing furnace on a galvanizing line?

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A discussion started in 2006 but continuing through 2018

2006

Q. I would request to everyone to please let me know what is non oxidizing furnace (NOF) in galvanizing line and what are its advantages over ordinary furnace?

Atul Mishra
pipe - Maharashtra, India


2006

A. The oxide develops a film which prevents the eta and zeta layers from forming and failure results from oxidised film on the raw sheet.

Dr Malcolm Mudge
- Perth



Furnace dew point for NOF galvanizing line

April 3, 2018

Q. In NOF line Nitrogen plant showing its due point -39 but furnace meter showing dew point +8 and pull peat also showing +8. Probable standard dew point should be less than -7. What may be the solutions ?

Shopon saif
Plant manager - Dhaka, Dhaka, Bangladesh



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