Twisted Welding Moves...

[BStoney]

Well, in the midst of lots of fabrication across the country and the world, it's always good to have a laugh and check out everyone's welders at work...

Who ever said the welder didn't use his head?

http://www.imagestation.com/picture/sraid149/p09d4100942ef0aad22d2f94ede8e603e/f5fba5a4.jpg

B.J. Stoney

[BStoney]

Well, in the midst of lots of fabrication across the country and the world, it's always good to have a laugh and check out everyone's welders at work...

Who ever said the welder didn't use his head?

http://www.imagestation.com/picture/sraid149/p09d4100942ef0aad22d2f94ede8e603e/f5fba5a4.jpg

B.J. Stoney

[The guru of guru's]

I suppose he is using his feet to crack a beer http://fsae.com/groupee_common/emoticons/icon_wink.gif

[Ben Beacock]

Make sure to tell him to watch what he leans his head on. I have little melty marks on my expensive helmet and couldn't figure out what they were from until I caught myself propping my head on a warm bar.
Oh, and we use a thumb control for those situtations (actually all situations since we have no pedal right now)

[BStoney]

Good thing it wasn't my helmet http://fsae.com/groupee_common/emoticons/icon_wink.gif

[Lash]

Hey one quick qestion for all you welders out there:

I am trying to deside (to save weight) on going with either a 1" OD X 0.028 wall or a 5/8 OD X 0.049 wall. I was thinking that welding an 0.028 to an 0.095 wall would be a bitch, plus the faster cooling rate could produce martensite. What do you think ? I know the 1" will have more stiffness but were using all 1" on the outside main safety stucture.

P.S. Has anyone used 0.5 " OD ???

[BStoney]

well, welding 0.028 to 0.095 granted would be harder, but not horribly difficult. I guess it just depends on what the tube is and where it is going. We have anywhere from 0.028 to the obvious 0.095 wall thicknesses on the chassis, so it just depends on your design.

To the best of my knowledge, martensite is going to form to some extent anyways, but you can help to relieve the effects by pre-heating, and post-weld heat treating. The post-weld heat treat will temper the martensite and also help to remove the residual stress in the joint.

Also, yes we have used and do use .500 OD tubes with .035 and .049 walls....

Just my .02 .....

B.J. Stoney

[alfordda]

B.J., did you just learn that in your materials class? Just kidding buddy.

[BStoney]

Sometimes, I guess you can actually learn something on co-op http://fsae.com/groupee_common/emoticons/icon_wink.gif ha!

B.J. Stoney

[Lash]

Yeah I'm thinking on using some 0.028 too. No problems with stiffness? Strength? What about 0.5 OD X 0.035 ?? I"m just using it as cross members

[BStoney]

If you put it in the right places and use it wisely, you can achieve a light-weight design that is still very stiff.

Don't know about your individual design, but it's something that sounds like only ANSYS or another FEA approach can tell you with actual testing.....

Good luck!

B.J. Stoney

[RagingGrandpa]

I thought the TIG pedal makes a pretty good thighmaster when you're lying on your side underneath something like that.... then again my team always laughs at me whenever I do that....

[BStoney]

RacingGrandpa....

That happens all too often...

Maybe sometime we can get a thumb controlled torch...but for now, a headrest it is http://fsae.com/groupee_common/emoticons/icon_wink.gif