Friction Stir Welding Demonstration - Manufacturing Technology, Inc.

Demonstration of friction stir welding by Transformation Technology, Inc. which is now a Manufacturing Technology, Inc. company.

www.mtiwelding.com

Category:

Science & Technology

Tags:

• friction
• stir
• welding
• MTI
• TTI
• manufacturing
• technology
• transformation
• joining
• solid
• state

[TSalvalagio]

Doesn't it create a hole in the section? I mean, under the weld, isn't it hollow?

[dougw246]

@TSalvalagio - There is often a hole, the size of the pin at the end of the tool, at the end of the weld. There are some strategies to eliminate or minimize what is called the retraction defect. The simplest strategy is to end the weld in an area where the defect is not a problem or use a runoff tab that is cutoff. also, there is a retractable pin tool technology we use that retracts the pin into the shoulder at the end of the weld, eliminating the defect.

[citanon]

Thanks dougw246. How do you get rid of the hole at the end，or is that not necessary?

[dougw246]

@citanon, There will always be an extraction defect with stir welding unless you incorporate retractable pin tool technology into the machine. It is sometimes not a problem to have the extraction defect if you can locate it on the part where it is not offensive or run-out tabs can be used to locate the defect off the part.

[Mikyzo86]

Why at 7:55 you intentionnally cover the remaining hole of the tip with your hand??

It is also covered at the beginning of the welding by the clamps....

[dougw246]

@Mikyzo86, no reason I can think of. There will always be an extraction defect with stir welding unless you incorporate retractable pin tool technology into the machine.

[NOCERINale]

How i can do a good analisys of the grain???

[dillonbakkedotcom]

nice editing ;)

[JAPudas]

OMG You have got 2 be BSing me :O

[Morinoidate18]

Thanks!! Now I got a more better idea of how this welding works!!

[MrMickoo7]

THANKS MAN,YOU SAVE ME,THIS IS ONE OF THE QUESTION ON MY EXSAM IN MONDAY..NICE VIDEO...

[urmesty]

recently i've done some welding on an aluminum plate. I've encountered some splatter problem. can you give some tips on hw to prevent splattering.

[Knnniggit]

I was like

-_-

And then I was like

O_o

I had never heard of friction stir welding before. That's just bizarre.

And BTW, those hydraulic clamps = cool.

[citanon]

@dougw246 Makes sense. I'm guessing that for the first weld in the video, the machine stopped at a run-out tab?

Thanks for posting this video and the explanation. I'm a material scientist by training but I've done so much nanotechnology that I forgot how cool "normal" material science can be.