Guided Bend Test-Weld

[mack5555]

I am looking to get some plans on a 2" guided bend test machine for our welding department. Does anyone have any plans for one of these?

I have a basic one drawn up on paper but I was wanting ideas on how to get it done right! If you know of some let me know.

Thanks,
Josh

I am thinking of one with a 12 ton pneumatic jack that I have laying around.

If I get time I will post the sketch I drew up.

[forhire]

Check this page:
http://www.tpub.com/steelworker1/78.htm

[Rev383]

Thumbs up for the SEABEE Steelworker pub. It is right out of the AWS SENSE QC10:2008 there are a couple of alternatives shown there also.

In our lab we used a couple of 2" dia. Cummins diesel wrist pins for the shoulders and I made the upper mandrel from some 1 1/2" dia. 4340. We used a 30 ton shop press to push the upper mandrel and the test piece through the wrist pins. The wrist pins were welded to some 1 x 2" A36 with 308 SS wire which in turn were welded to some 3/8" inch plate. Hardest part was hardening the chrome moly.

[mack5555]

Thumbs up for the SEABEE Steelworker pub. It is right out of the AWS SENSE QC10:2008 there are a couple of alternatives shown there also.

In our lab we used a couple of 2" dia. Cummins diesel wrist pins for the shoulders and I made the upper mandrel from some 1 1/2" dia. 4340. We used a 30 ton shop press to push the upper mandrel and the test piece through the wrist pins. The wrist pins were welded to some 1 x 2" A36 with 308 SS wire which in turn were welded to some 3/8" inch plate. Hardest part was hardening the chrome moly.

Do you think a 12 ton would be enough for basic bend test of A36 3/8"

[Rev383]

My guess would be yes. A36 has a minimum yield strength of 36,000 psi so 3/8's of that would be 13,500 psi.... so the 12T should work.

I have seen a couple that use what look like a 12T bottle jack or 10T ram.

http://www.sawyermfg.com/pdfs/guidedbend-25.pdf

The shop fabricated one was here when I started. It was in pretty bad shape and we've never used it. Mandrel on the jack ram is only 1 1/8" and it must of used bolts for the upper ones. Good idea that wasn't executed very well.

[DSW]

Should be able to , I can hand bend 2" x 3/8" on my shop outfitters bender. I was using that a a quick and dirty bend tester to test some of my practice welds at home.

[mack5555]

Thanks for your ideas guys I will put them to good use

[mack5555]

Anyone else have any blueprints on these?

[h22alsd]

Sorry to bring up an old thread but I just bought a strap bender (tensile tester) from here


http://www.sawyermfg.com/index.php/p...ensile-tester/


I was wondering does it only measure the elsticity and breakage of the material being tested?

If not what does it measure and what else is it capable of measuring?

Thanks


Robert