It is currently Wed Jun 28, 2017 9:56 pm Advanced search

Cast iron tig braze - aluminum bronze

What welding projects are you working on? Are you proud of something you built?
How about posting some pics so other welders can get some ideas?

Cast iron tig braze - aluminum bronze

Postby MinnesotaDave » Sun Mar 19, 2017 1:04 pm

Nice older couple needed an antique sewing machine base repaired.
(Shipping company broke it and super-glued without telling them)

After standard google searching and watching Jody's brazing video with AC tig, and texts to friend Steve - I was ready.

Experimented with balance (on scrap) at 10, 9 and 8 on the syncro 350 set to 200 amps. Balance set to 8 was good. The upper 2 settings behaved strangely.

Running a linear regression puts that balance at 63.5% electrode negative.

Only took a few pics, it brazed very nicely after I learned how to see it wet out without actually puddling the cast.

This particular filler rod is ER-CuAl-A2

cast break.jpg
cast break.jpg (44.27 KiB) Viewed 461 times


Quick test on scrap to see how brazing works.
braze test.jpg
braze test.jpg (36.38 KiB) Viewed 461 times


Brazed a little on the front, clamped and ground the back deep.
clamped.jpg
clamped.jpg (42.35 KiB) Viewed 461 times


Starting the blending process.
back ground.jpg
back ground.jpg (42.13 KiB) Viewed 461 times


Start blending the front.
front ground1.jpg
front ground1.jpg (49.35 KiB) Viewed 461 times
Last edited by MinnesotaDave on Sun Mar 19, 2017 5:01 pm, edited 1 time in total.
Dave J.

Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

Airco 300 - Syncro 350
Invertec v250-s
Thermal Arc 161 and 300
MM210
Dialarc
Tried being normal once, didn't take....I think it was a Tuesday.
User avatar
MinnesotaDave
Weldmonger
 
Posts: 1495
Joined: Sun Oct 27, 2013 10:57 pm
Location: Bemidji MN, U.S.A.

Re: Cast iron tig braze - aluminum bronze

Postby MinnesotaDave » Sun Mar 19, 2017 1:07 pm

A little more blending.
front ground2.jpg
front ground2.jpg (40.36 KiB) Viewed 455 times


Blend and paint.
front ground3.jpg
front ground3.jpg (48.69 KiB) Viewed 455 times


Delivered and reassembled.
delivered.jpg
delivered.jpg (46.53 KiB) Viewed 455 times


What I found when I researched A2 Alum.Bronze
A2 bronze.jpg
A2 bronze.jpg (56.13 KiB) Viewed 455 times
Dave J.

Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

Airco 300 - Syncro 350
Invertec v250-s
Thermal Arc 161 and 300
MM210
Dialarc
Tried being normal once, didn't take....I think it was a Tuesday.
User avatar
MinnesotaDave
Weldmonger
 
Posts: 1495
Joined: Sun Oct 27, 2013 10:57 pm
Location: Bemidji MN, U.S.A.

Re: Cast iron tig braze - aluminum bronze

Postby exnailpounder » Sun Mar 19, 2017 1:13 pm

Great work Dave! I just repaired a cast hypoid gear on an 6 wheeled offroad vehicle and used ALBr and it worked awesome. Very handy stuff to have around. Again...really nice!
Ifyoucantellmewhatthissaysiwillbuyyouabeer.
exnailpounder
Weldmonger
 
Posts: 2461
Joined: Thu Dec 25, 2014 9:25 am
Location: near Chicago

Re: Cast iron tig braze - aluminum bronze

Postby LtBadd » Sun Mar 19, 2017 2:16 pm

Nice job Dave, I'm sure the customer was happy.
Richard

Insert witty, sarcastic, or philosophical remark here.
User avatar
LtBadd
Weldmonger
 
Posts: 1234
Joined: Sun Apr 12, 2015 4:00 pm
Location: Clearwater FL

Re: Cast iron tig braze - aluminum bronze

Postby LtBadd » Sun Mar 19, 2017 2:17 pm

exnailpounder wrote:Great work Dave! I just repaired a cast hypoid gear on an 6 wheeled offroad vehicle and used ALBr and it worked awesome. Very handy stuff to have around. Again...really nice!

Jeff how would you compare the ALbrz to SilBrz for cast repair?
Richard

Insert witty, sarcastic, or philosophical remark here.
User avatar
LtBadd
Weldmonger
 
Posts: 1234
Joined: Sun Apr 12, 2015 4:00 pm
Location: Clearwater FL

Re: Cast iron tig braze - aluminum bronze

Postby jroark » Sun Mar 19, 2017 2:50 pm

I also have to say that looks fantastic. Good paint match too. Great work.
jroark
Guide
 
Posts: 174
Joined: Thu Jul 16, 2015 2:39 pm
Location: Ramseur, NC

Re: Cast iron tig braze - aluminum bronze

Postby MinnesotaDave » Sun Mar 19, 2017 5:00 pm

Thanks guys :D It was my first tig braze and was pretty interesting.
Dave J.

Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

Airco 300 - Syncro 350
Invertec v250-s
Thermal Arc 161 and 300
MM210
Dialarc
Tried being normal once, didn't take....I think it was a Tuesday.
User avatar
MinnesotaDave
Weldmonger
 
Posts: 1495
Joined: Sun Oct 27, 2013 10:57 pm
Location: Bemidji MN, U.S.A.

Re: Cast iron tig braze - aluminum bronze

Postby Otto Nobedder » Sun Mar 19, 2017 5:47 pm

That is absolutely beautiful!

I had the same sewing machine (probably, based on the cabinet), but it had been updated to electric in the 40's, so the treadle was just decoration. I actually bought it at a yard sale for $5. (The cabinet was in crappy condition.) Two hours with solvents, oil, and patience, and it sewed like a brand new machine.

Steve S
User avatar
Otto Nobedder
Weldmonger
 
Posts: 8329
Joined: Thu Jan 06, 2011 11:40 pm
Location: Near New Orleans

Re: Cast iron tig braze - aluminum bronze

Postby MinnesotaDave » Sun Mar 19, 2017 6:39 pm

Otto Nobedder wrote:That is absolutely beautiful!

I had the same sewing machine (probably, based on the cabinet), but it had been updated to electric in the 40's, so the treadle was just decoration. I actually bought it at a yard sale for $5. (The cabinet was in crappy condition.) Two hours with solvents, oil, and patience, and it sewed like a brand new machine.

Steve S


Thanks Steve :D

My sewing machine is an old Swiss made Elna with fold down cabinet. Works very good. :)
Dave J.

Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

Airco 300 - Syncro 350
Invertec v250-s
Thermal Arc 161 and 300
MM210
Dialarc
Tried being normal once, didn't take....I think it was a Tuesday.
User avatar
MinnesotaDave
Weldmonger
 
Posts: 1495
Joined: Sun Oct 27, 2013 10:57 pm
Location: Bemidji MN, U.S.A.

Re: Cast iron tig braze - aluminum bronze

Postby exnailpounder » Sun Mar 19, 2017 8:33 pm

LtBadd wrote:
exnailpounder wrote:Great work Dave! I just repaired a cast hypoid gear on an 6 wheeled offroad vehicle and used ALBr and it worked awesome. Very handy stuff to have around. Again...really nice!

Jeff how would you compare the ALbrz to SilBrz for cast repair?

I would say as far as brazing characteristics, there was no difference...both "welded" the same but I used ALBr on this repair because of the strength advantage. I bought some ALBr on a whim when I was at the welders candy store and was itching to try it. I have used SilBr with great results and no problems but I can definitely see the merit in using ALBr for certain things. What did you use on that lathe shipswheels again?
Ifyoucantellmewhatthissaysiwillbuyyouabeer.
exnailpounder
Weldmonger
 
Posts: 2461
Joined: Thu Dec 25, 2014 9:25 am
Location: near Chicago

Next

Return to Welding Projects - Welding project Ideas - Welding project plans