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Silicon Carbide Contamination

01/23/2008 1:35 PM

Hello

We use silicon carbide as an abrasive in lapping gears. Once the lapping process has been completed we wash the gears to remove any residual SiC. I want to be able to insure that there is no SiC left on the gears before assembly. So my question (long time coming): Does anyone know of a way to detect small amounts/ Trace of SiC in a Plant Production environment?

Thanks in advance!

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#1

Re: Silicon Carbide Contamination

01/23/2008 2:01 PM

Detectors (pelistors - I can't find the name now) used for detecting methane is very sensitive to the presence of Si. They are literally poisoned by minute traces of Si

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#2
In reply to #1

Re: Silicon Carbide Contamination

01/23/2008 2:05 PM

Thanks Hendrik...But

Would I rub them on the gears? How many would I go through after 20K gears a day?

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Guru
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#3
In reply to #2

Re: Silicon Carbide Contamination

01/23/2008 4:41 PM

Sorry I was a bit pressed for time and did not give enough detail.

Try and google for pelisters and see what else they have available. It could just be possible to detect SiC in the same manner as methane or CO etc.

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#4
In reply to #3

Re: Silicon Carbide Contamination

01/24/2008 12:58 AM

With power cuts me and the service provider don't seem to have long spells on the net.

The methane pelistors are poisoned by molecules of Si in the air. Rubbing should not be required. This negative testing will be expensive.

I think I have heard of SiC used to detect ultraviolet , Can UV not be useful to use it as an inverse sensor for SiC?

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#5
In reply to #4

Re: Silicon Carbide Contamination

01/24/2008 6:29 AM

Can UV not be useful to use it as an inverse sensor for SiC?

This was my first thought, but SiC is not UV-Reactive under "black Light" wavelengths and I don't think you could get a tracer to stick to it. The stuff get ground down to an average size of 45 microns. Are there other wavelengths that will fluoresce SiC?

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#6

Re: Silicon Carbide Contamination

01/24/2008 7:56 AM

Dear Yani,

I am V Subbaraman, of Carborundum Universal Ltd., India, looking after Business Development for Abrasive Grains.

For more details regarding our division please visit our websites www.electrominerals.eu

The Electro Minerals Division (EMD) of of our compny is a separate business division primarily in the business of manufacturing Silicon Carbide and Alumina Oxide grains for the Abrasive, Refractory, Ceramics, Lapping, Wafer Slicing and Diesel Particle Filter industry.

Above materials are delivered according to international standards like FEPA or JIS. As per customer request, specific qualities and fractions are possible. All production plants of CUMI are QM-certified according to DIN EN ISO 9001:2000 by RWTÜV Systems GmbH.

We understand from your posting that you use Silicon Carbide in your lapping application.

We take this opportunity to thank you for your posting look forward to doing business with you.

Please mail us your requirements so that we can make a very competitive offer.

Thanks and Best Regards

V Subbaraman
Senior Manager - Business Development
===================================
CARBORUNDUM UNIVERSAL LTD.,
P.B. No. 1, K.D. Plot P.O
Kochi, Kerala - 683 109, INDIA

e-mail: subbaramanv@cumi.murugappa.com

===================================

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#7
In reply to #6

Re: Silicon Carbide Contamination

01/24/2008 10:03 AM

This commercial break brought to you by no one

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#8
In reply to #7

Re: Silicon Carbide Contamination

01/24/2008 10:07 AM

I ignore all blatant commercials. I want a kiss behind the ear at least!

Been to Beaver, OK & Slap-out, OK but don't know where broken Arrow Is

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Guru
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#9
In reply to #8

Re: Silicon Carbide Contamination

01/24/2008 10:19 AM

Just a tiny bit southeast of Tulsa OK.

I just had to add some color commentary lol.

It would be different if you got on here asking for a supplier but you were not. I mean I work for a very large decal company but I don't get on here and tell people asking questions "Hey since your using stickers let us sell you some" especially not when you don't need that Information. You apparently have a good supplier so I imagine your happy with them and well I guess it just gets on my nerves sometimes.

I know I am not offering any solutions to your dilemma but I guess I got up on the wrong side of the bed today.

Sorry

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