View Full Version : Heating the spar to loosen hysol ??
southwind32
10-16-2017, 03:10 PM
Deleted, sorry
mr bill
10-16-2017, 04:07 PM
1100 will melt the aluminum. The lower setting will soften the epoxy.
jrevens
10-16-2017, 09:44 PM
Be careful not to overheat the aluminum spar tube. Keep the temperature as low as possible and for as short a time as possible. The 6061-T6 tubes can lose considerable strength, permanently, at temperatures well below the melting point. I think to be safe I wouldn't go over about 400 deg. F for any extended period of time.
southwind32
10-17-2017, 07:35 AM
Thanks for the replies...........I was able to remove the fuel tank without using any heat. Frankly I didn't want to take a chance of using heat on the spar, so careful chiseled it away, what a job.
Guy Buchanan
10-18-2017, 12:38 PM
For future reference here's a great paper which documents a study of whether aluminum can degrade in high-heat paint ovens. It gives good time / temp / strength plots for 6061-T6 and others:
http://digitalcommons.calpoly.edu/cgi/viewcontent.cgi?article=1132&context=matesp (http://digitalcommons.calpoly.edu/cgi/viewcontent.cgi?article=1132&context=matesp)
And of course, John nailed it. Keeping below 400F for any reasonable period of time should retain all your strength.
Powered by vBulletin® Version 4.2.5 Copyright © 2024 vBulletin Solutions Inc. All rights reserved.