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Anonymous Poster

Industrial Engineer- Aerospace

06/18/2008 12:33 PM

I'm looking for assistance in perfecting a process that uses Easy Flow 45 silver solder. A heater mat with advance alloy, 294 ohms/circular mil/ft. Does anyone have equipment other than resistence welders for this material. We currently use a resistence welder w/a carbon block that heats to 1350 degrees F. It seems crude. and the excessive heats makes the wires harden and break.
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gdevine
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Join Date: Mar 2008
Location: Globaly - very close to the southern most point of Canada
Posts: 445
Good Answers: 12
#1

Re: Industrial Engineer- Aerospace

06/19/2008 8:30 AM

I'm not quite sure about your application, but we use induction to heat and braze silver solder for aerospace tube applications.

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RHABE
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Join Date: Dec 2006
Location: Germany 49° 26' N, 7° 46' O
Posts: 1950
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#2

Re: Industrial Engineer- Aerospace

06/19/2008 3:03 PM

Hi,

please specify what is : Easy Flow 45 and which material do you want to braze?

It is very likely that some other mechanism is responsible for brittleness.

RHABE
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gdevine
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Join Date: Mar 2008
Location: Globaly - very close to the southern most point of Canada
Posts: 445
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#3

Re: Industrial Engineer- Aerospace

06/20/2008 10:21 AM

If excessive heat is causing issues then you may want to consider using a temperature sensitive material such as Tempilaq. It changes colour at different temperatures to indicate a heat limit has been reached.

This may help you tune in your process.

See link:

http://www.tempil.com/product.asp

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uffarndan
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Join Date: Jun 2008
Posts: 3
#4

Re: Industrial Engineer- Aerospace

07/07/2008 6:08 AM

This application appears to be a possible candidate for induction heating. The carbon block can be heated using this process in a controllable manner which can therefore prevent overheating. Without further information as regards size etc. it would be difficult to suggest a suitable machine capacity.
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gdevine (2); RHABE (1); uffarndan (1)

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