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If you have a question regarding coaxial, telephone, and building wire, power cable, insulation, extrusion, bunching, stranding, braiding, etc. post it here.

TOPIC: enamelling oven parameters

enamelling oven parameters 11 months 1 week ago #3024

We have an enameling multi-line oven. It is one oven with 2 lines. When we run both lines the quality of wire is good, but if one wire breaks while we are pulling out the wires inside the oven, the other wire gets cracks on the wire. The catalyst is new. How we can resolve this problem.?

Thanks a lot
Last Edit: 11 months 1 week ago by Peter J Stewart-Hay.
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enamelling oven parameters 11 months 1 week ago #3025

Hello again,

I think you should discuss this with the oven manufacturer as it would seem that if there is one wire remaining in the oven, you have too much heat energy going into the remaining wire for a short period of time.

When you start up and run the oven with one wire, is the quality of the wire good?
Regards,
Peter J. Stewart-Hay Principal
Stewart-Hay Associates
www.Stewart-Hay.com
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Last Edit: 11 months 1 week ago by Peter J Stewart-Hay.
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The following user(s) said Thank You: Mr Mohsen Ajalloueian

enamelling oven parameters 11 months 1 week ago #3026

Hello Sir

Thank you so much for your reply.

Yes. when we start one line the quality is good.
Last Edit: 11 months 1 week ago by Peter J Stewart-Hay.
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enamelling oven parameters 2 weeks 4 days ago #3099

  • Richard Burke
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You have an oven that is set up for two wires running simultaneously, temperature and air flow is the same for each wire. When you stop a wire, it can affect the air flow and the temperature that the still running wire is experiencing. Is the other wire cracking on a wrap test? If it is now and wasn't earlier, it means that the wire is now being over cured. Anytime you are running two wires of different sizes and enamel build, the operating conditions are optimized so that you can run both wires. When one line is stopped the set up is compromised. You have to "learn" how to compensate.
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enamelling oven parameters 2 weeks 4 days ago #3100

  • Richard Burke
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Good answer Peter.
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enamelling oven parameters 1 week 5 days ago #3106

Dear Richard Burke

Thank you so much for your reply.

We have one horizontal oven with chamber temperature 520 centigrade. The oven has 2 inline drawing lines.
When 2 lines are working the quality of both lines are good. If one line breaks for example in drawing machine
another line has black cracks on the surface of wire.
some one suggest me to reduce the temperature . How do you think, does it help?
another question : usually the airflow at he beginning of oven and also air flow at the end of oven must be 1 m/s.
and temperature after the catalyst must be 20-30 degrees more than before catalyst. Is it right?

Regards
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