The Dos and Don’ts When TIG Brazing Silicon Bronze
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- Опубликовано: 8 дек 2019
- Interested in TIG brazing silicon bronze? Get all the tips and tricks you need from welder/fabricator Josh Welton.
TIG brazing with silicon bronze can add a unique look to your projects. Welton offers visual examples of a proper bead, as well as beads that are too cold and too hot. He also demonstrates how to TIG braze using both AC and DC on his Multimatic® 220 AC/DC - and explains the pros and cons of each.
To learn more about TIG brazing silicon bronze, visit:
www.millerwelds.com/resources...
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Хобби
Thanks for making this. I never considered using AC for brazing until now.
I love this demonstration of how to recognize when and why things are going wrong. Watching a guy do it perfectly doesn't help as much!
That's a great explanation of AC & DC tig brazing. It helps to explain a lot of the way the bead will act. Thanks
That was very concise, informative and well done - thanks!
Hello Jay! Thank you for reaching out. We appreciate the support!
Very nice! I have been messing around with tig brazing on my custom motorcycle build, using it to add brackets and cable guides. Learned a few things with your video. Subbed and liked. BTW as a Detroit native I do dig the sweatshirt!
THE BEST VIDEO YET 😮💨👑💪🏽
Nice, bro!
Man, I love what we do for a living!
*METAL LIFE*
Great video...thanks man.
Excellent presentation!
Thank You!
I saw this less than an hour after reading the "Braze Welding" section in Chapter 12 of Welding Handbook. Great video! It's rare to find clear detailed information like this on TIG brazing. Josh gave an outstanding presentation here.
Glad you enjoyed it!
Thanks for a great video/demonstration-
Glad it was helpful!
I find a 1.6 pulse on dc makes this stuff weld brilliantly. IMO DC with slow pulse is the best balance between the silicone bronze flowing and keeping it clean if you get right. Havent felt the need for AC which might be more worthwhile on castings and stuff like that would be my guess.
Looks like I need to give this a shot with my Multimatic 220 as well! I need to join a black oxide treated sprocket to a cold rolled steel hub. Aside from degreasing, is it recommended to removed the black oxide from the area to brazed from the sprocket?
Hello Tim. Thank you for reaching out! You could most likely weld right through it but with the TIG process starting with clean metal is the best way to go so I would suggest cleaning it off before welding. We hope this helps! Let us know if you have any additional questions.
Great question! 👍
Hello.
Thank you for the video.
Is it a 220 machine or 255 ?
Best regards from Roatan.
Walter, animal lover 220
thank you. this is a great video. I have a Question I was hoping you answer soon because I got do the job tonight or tomorrow. if I am brazing aluminum and steel should I braze with AC or DC?
Hi Jack, thanks for your question. AC should be used when trying to join steel and aluminum.
@@MillerWelders Thank you.
@@MillerWelders - Just to clarify that I understand your response; you're saying that aluminum & steel can be brazed?? With silicon bronze or aluminum bronze or some other filler? I've never heard of this, but would love to learn more about it. Thanks
@@ls2005019227 I'd love to see and answer to this question also
So i did some cast iron, and I think I got it too hot, and does the base metal mix with the sil bronze and create some kind of mutant metal that will not machine? Cause it breaks a carbide tipped boring bar.
You’re not supposed to melt the base metal
Awesome tips, watch the argon, it’s a carcinogen once through the flame changes state..
Epic I’ll have to make sure to inhale more of it in the garage 🙌🏽
Known to cause California?
What tungsten do you use on AC? I had a blue one and on AC it went away and I could not establish a good arc.
Not sure what he was using but I have great luck with 2% zirconated for Aluminum. Holds up to the heat better than Puretung
I use silicone bronze rods sif no1 on DC.tig welding using argon pure shield and it gives off a lot of smoke. Why is this?
I've use phosphorus bronze before and you get a nice bead just like you have done here. Is there something I'm doing wrong which causes the bad smoke? Im welding brass
brass contains zinc which boils/burns off at a much lower temperature than the copper which causes the smoke, very similar to welding galv. also toxic to breathe
Can I do tig silicone bronze on cast aluminum dc ?!thanks
Thanks for your question. We wouldn’t recommend doing this process. Cast aluminum should be welded in AC. It is a very dirty material and needs the cleaning action of the reverse polarity in AC. Also, using a silicon bronze rod is actually brazing. Brazing requires the filler metal to lay over the top of the base metal. Since cast aluminum can house so many contaminants, the silicon bronze most likely won’t adhere to the aluminum that well.
I was thinking the same can u braze silicone bronze to aluminum
Can I use silicone bronze with DC on cast iron?
Yes you can, Leon! Let us know if you have any additional questions.
Whenever I try to tig braze silicon bronze, it sputters and crackles and smokes leaving a thick white powder on everything. HELP! What am I doing wrong?
Steven, typically the white residue that shows up around a silicon braze indicates it has been overheated. You want to lower your heat input which can be done with your amperage setting but also be mindful that a very slow travel speed can significantly increase heat input as well. A second item to check would be your shielding gas. Make sure the Argon tank is at a relatively high pressure, not near the end of the tank. Low tank pressures can amplify moisture problems that you may see in the weld/braze zone.
DC settings?????
Hello. When brazing with silicon bronze set the welder up to 1 amp per .001” thickness of material. It is similar to steel, except you are not forming a full puddle before dipping the rod in. Let us know if you have any additional questions.
Can you TIG-braze without gas, using flux-core bronze rods?
Hello. We apologize for the delayed response. If you plan on using a self-fluxing bronze rod, at that point you would be using an oxy-acetylene flame and not a tig torch. If you plan on using a tig torch, gas is required. We hope this helps!
@@MillerWelders Yes, it helps. Thanks for the reply, but you don't need to apologise. You don't owe me anything.
Dont you need flux?
Flux is not needed with the GTAW process like it would be if you were oxy-fuel brazing. GTAW has a shielding gas flowing from the torch which blankets the weld zone and protects the weld from atmosphere contamination; flux achieves this as it is consumed in the oxy-fuel process. Please let us know if you have additional questions!
dog ruff
stop the background music, there is none in school.