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Nonferrous topics such as copper and aluminum, annealing, etc. go here.

TOPIC: Copper wire drawing air quality

Copper wire drawing air quality 2 months 1 week ago #3072

We Received the following at our offices and have posted it here.

We are one of the leading manufacture of Building wires and cable in India.
We want to test the ambient air quality for our factory premises for the purpose of copper reacts with the open air wire surface color ( It may be blackish Or Reddish) .
Please advise the any test to be conduct through third party environment lab and any particular elements check for precaution for copper wire drawing manufacturing.
Early action highly appreciated.
Awaiting for your reply ,

Thanks & Regards
Senthilkumar.K
Manager Quality
Regards,
Peter J. Stewart-Hay Principal
Stewart-Hay Associates
www.Stewart-Hay.com
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Last Edit: 2 months 1 week ago by Peter J Stewart-Hay.
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Copper wire drawing air quality 2 months 1 week ago #3073

There have been a number of threads on copper wire discoloration in the Forums.

We therefore refer you to the following threads over the past five or six years.

www.wirenet.org/wai-forums/8-nonferrous/...opper-wire-tarnished
www.wirenet.org/wai-forums/5-electrical/...-tarnished-after-pvc
www.wirenet.org/wai-forums/5-electrical/...vc-insulating-part-2
www.wirenet.org/wai-forums/5-electrical/...-tarnished-after-pvc

Copper(I) Oxide, Cuprous Oxide, Cuprite or Red Copper Oxide (CuO2)
Cuprous Oxide can easily coat the conductor and it is a brownish-red solid. The chemical formula is CuO2 meaning two oxygen atoms combine with one copper atom. (Cu + O2 = CuO2). On copper wire, you can see the cuprous oxide layer in full color as various shades of reds, oranges, pinks, and purples if the copper has been heated too high (Above about 200 degrees Celsius (392 Fahrenheit) and exposed to oxygen. Moreover keep in mind that when copper is hot, it quickly oxidizes (corrodes or rusts) and this is nothing more than a simple chemical reaction with oxygen.

On the other hand:
Copper(II) Oxide, Cupric Oxide (CuO)
Cupric Oxide can as well easily coat the conductor and it is a black solid. It can be formed by heating copper in air at around 300 - 800°C:

This is a good starting spot for your issues.
Regards,
Peter J. Stewart-Hay Principal
Stewart-Hay Associates
www.Stewart-Hay.com
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The administrator has disabled public write access.

Copper wire drawing air quality 1 month 3 weeks ago #3080

We Received the following at our offices and have posted it here.

Thank you for your fast and prompt reply .It would be very much helpful if you please help me another suggestion on same query .

Our motto is to produce best quality PVC Insulated Copper wire .
Please suggest how to maintain and keep good quality copper drawing what kind of safety measure to taken ,Likewise ambient temperature ,humidity of environment ,moisture ,atmospheric air condition .,exposure of lighting and water quality .

Early action highly appreciated.

Awaiting for your reply ,

Thank you for your time .

Thanks & Regards

Senthil Kumar.K

BALARMARKETING (P)LTD.,
F-8 RIICO INDUSTRIAL AREA PHASE -1 ,
BHIWADI-301019
DISTT.ALWAR RAJASTHAN INDIA
Web:kundancab.in
Regards,
Peter J. Stewart-Hay Principal
Stewart-Hay Associates
www.Stewart-Hay.com
This email address is being protected from spambots. You need JavaScript enabled to view it.
Last Edit: 1 month 3 weeks ago by Peter J Stewart-Hay.
The administrator has disabled public write access.

Copper wire drawing air quality 1 month 3 weeks ago #3083

Hello Mr. Kumar.K Senthil,

The first thing we recommend is that you purchase the Nonferrous Wire Handbook Volume 3 from the WAI store:

portal.wirenet.org/eweb/DynamicPage.aspx...DA-90A3-CDFBA601F1EE

and the Nonferrous Wiredrawing Coolants Booklet from the WAI Store and start reading.


portal.wirenet.org/eweb/DynamicPage.aspx...20-9CCC-ABFDE6B395F7

Moreover we recommend you contact your wire drawing lubricant supplier/ manufacturer and obtain all the technical information you can obtain.

Finally please stop E-mailing our offices because it makes far too much work for us. From now on we will not answer your E-mails we get at our offices and delete same . Thank you.
Regards,
Peter J. Stewart-Hay Principal
Stewart-Hay Associates
www.Stewart-Hay.com
This email address is being protected from spambots. You need JavaScript enabled to view it.
Last Edit: 1 month 3 weeks ago by Peter J Stewart-Hay.
The administrator has disabled public write access.
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