Roger:
Unfortunately, I never weighed the parts before and after application of
CeRam-Kote 54. We were mainly concerned about how well it would withstand
constant water immersion (for water tunnel model flow testing) without
swelling. You can apply mulitple coats and build up a fairly thick coating
if you want (.030" or more) the only problem is this is very time consuming
because (as I recall) you have to wait a long time between coats, like 12
hours, before you can apply the next one. The coating thickness we used was
only .003"-.005" thick. The adhesion to the stereolithography models was
excellent, especially since it uses epoxy as the volatile component and it
appears very compatible.
Regards,
Glenn Whiteside
-----Original Message-----
From: Spielman, Roger L <Roger.Spielman@West.Boeing.com>
To: Rapid Prototype Mailing List <rp-ml@bart.lpt.fi>; 'Monica & Glenn
Whiteside' <SiderWhite@worldnet.att.net>
Date: Friday, December 11, 1998 12:15 PM
Subject: RE: ATTN: Bruce LeMaster RE: SL Epoxy and supersonic air flow
>Hi Glenn...
>
>Do you know how much weight this material adds (when effective thickness is
>achieved)? How about adhesion? Sounds like a neat product.
>
>Roger Spielman
>Rocketdyne
>
>> ----------
>> From: Monica & Glenn Whiteside[SMTP:SiderWhite@worldnet.att.net]
>> Reply To: Monica & Glenn Whiteside
>> Sent: Friday, December 11, 1998 12:00 AM
>> To: Rapid Prototype Mailing List
>> Subject: ATTN: Bruce LeMaster RE: SL Epoxy and supersonic air flow
>>
>> Bruce:
>>
>> There is a ceramic coating that I have been wanting to try for these
>> applications - it's a very durable, wear resistant and flexible coating
>> that
>> we have used on some of our stretch-form tooling for wear-resistance
>> coatings. But you will need to seriously beef up the SLA model
internally
>> so it will not deform and break apart under the supersonic air pressures
>> (fuselage sections might be okay but structures such as wings and
>> vertical/horizontal fins might not survive very easily). The coating is
>> called "CeRam-Kote 54" and it is a spray applied air-cured ceramic epoxy
>> coating. The coating is currently approved for use on all F-15 aircraft
>> leading edges and is currently under testing on B-1 aircraft. It's
>> expensive but it might be worth a try. You can get more information at
>> their web site at: www.ceram-kote.com/aviation.htm
>> Let me know if you try it and what the results were if possible.
>> Some of our NASA friends here on the rp-ml might also be of help.
>>
>> Best Regards,
>>
>> Glenn Whiteside
>> Cessna Aircraft Company
>> e-mail: siderwhite@worldnet.att.net
>>
>>
>> -----Original Message-----
>> From: Bruce E. LeMaster <LeMaster@artcorp.com>
>> To: rp_ml Posting <rp-ml@bart.lpt.fi>
>> Date: Thursday, December 10, 1998 4:35 PM
>> Subject: SL Epoxy and supersonic air flow
>>
>>
>> >Hello all,
>> >
>> >We have a customer that would like to have a SL
>> >model made and then coated with an
>> >as-yet-to-be-determined material and actually test
>> >the model in supersonic flight. We have in the
>> >past plated SL parts with nickel and chrome for
>> >use in wind tunnels (for the same customer) but I
>> >have no idea what goes on at supersonic flows.
>> >
>> >Do any of you have experience with SL parts at
>> >supersonic airflow conditions? Any thoughts on
>> >plating the SL part with some combination of
>> >metals that might strengthen it to withstand the
>> >test environment?
>> >
>> >Thanks in advance.
>> >
>> >Bruce E. LeMaster
>> >--
>> >Applied Rapid Technologies Corporation
>> >265 Cambridge Street, Suite 100
>> >Fredericksburg, Virginia 22405
>> >(540) 371-1100 / (540) 371-4100 fax
>> >Web Page URL: http://www.artcorp.com
>> >
>> >
>> >
>> >For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
>>
>>
>> For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
>>
>
>For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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