16 gauge tubing with silicon bronze

[John T]

How you think it done before tig.
It was all torch
There place you can not use any type arc it has to be torch.
Maybe you need to get off the TIG machine and try real welding.
Not make false statements.

Dave

When I do welding with silicone bronze I would use a torch.
Simple and fast.

Dave

BAD ADVICE

NOBODY CARES what you did 40 years ago with a torch.

The OP asked about welding a set of headers with a TIG machine.

Also nobody cares about your insecurities and that you feel the need to tell everyone about yourself at every opportunity.

So far you have offered nothing to help the OP

Only, "look at me look at me"

Very sad insecure old man.

[John T]

When I was 17 years old
I welded a cherry bomb on my 1971 Buick skylark with a torch and a wire coat hanger.

Do you know why I haven't mentioned this before?

Because nobody gives a crap.
And it's not relevant to this thread.

[StandarDyne]

I also prefer O/A for brazing with SiB. Seems like it's easier to control heat than tig ... just move the torch away from the workpiece momentarily to let it cool a bit, and the borax will shield it. If you try that with a tig torch, you lose your argon shield. But if you use borax flux with tig torch, it spatters all over and fouls the tungsten. (I guess you could let off the pedal completely, and keep the torch in place, and retain shielding, but that's like chewing gum and rubbing your head at the same time, I guess.)

It's also easier to prevent melting the steel substrate (you don't want to do this) when using O/A since you're not looking at it through a super dark shield, so you can creep up on the melting temperature of the SiB filler. When I've tried it with tig, it seems like I always ended up melting the steel, which (again) you don't want to do.

Whether or not SiB is appropriate for headers is another question I don't feel qualified to comment on. What kind of temperatures will they see in service?

[danielplace]

Low fuming bronze rods that you use with flux is not at all the same as silicon bronze rod you would be using with tig.

Low fuming bronze with flux mends and joins metal with a smoothed out flow between the parts. When you tig with silicon bronze you lay down a bead profile.

Low fuming and flux is more like high temperature soldering because of the way it flows out and into the joint.

[StandarDyne]

Low fuming bronze rods that you use with flux is not at all the same as silicon bronze rod you would be using with tig.

Agreed. But you can also use SiB with O/A if you flux it (with borax -- the same stuff used on LFB).

Low fuming and flux is more like high temperature soldering because of the way it flows out and into the joint.

Same with SiB. Just depends on how hot you get it. You can build a bead (like welding), or you can flow it out through capillary action (like brazing). In either case, you don't want to melt the steel substrate.

[Oscar]

Agreed. But you can also use SiB with O/A if you flux it (with borax -- the same stuff used on LFB).



Same with SiB. Just depends on how hot you get it. You can build a bead (like welding), or you can flow it out through capillary action (like brazing). In either case, you don't want to melt the steel substrate.

It's just not appropriate for a headers for a drag car. Thats IMO, but I'm pretty sure it's also quite substantiated throughout the race industry by a far, far, far margin. Simply the wrong application. Temperatures will reach high enough to weaken the brazed joint.

[StandarDyne]

It's just not appropriate for a headers for a drag car. Thats IMO, but I'm pretty sure it's also quite substantiated throughout the race industry by a far, far, far margin. Simply the wrong application. Temperatures will reach high enough to weaken the brazed joint.

Well, if SiB is inappropriate for the application because of its melting point, LFB should be even more inappropriate for the same reason.

As I said above

Whether or not SiB is appropriate for headers is another question I don't feel qualified to comment on.

I was commenting only on how to use them generally.

[smithdoor]

How many time have you welded overhead with TIG?

Today there very good paying jobs in the electronic industry use a torch witch includes welding or brazing overhead.

Dave

BAD ADVICE

NOBODY CARES what you did 40 years ago with a torch.

The OP asked about welding a set of headers with a TIG machine.

Also nobody cares about your insecurities and that you feel the need to tell everyone about yourself at every opportunity.

So far you have offered nothing to help the OP

Only, "look at me look at me"

Very sad insecure old man.

[Sberry]

Me, tig, mostly overhead. In some unbelievable butthole spot.

[Sberry]

Seems,,,, If my problem is melting the base before adding the filler seems the solution would be to add steel filler,,, but hey I guess there is no reason not to complicate thaty some more. I brazed about twice since I got a mig.

[smithdoor]

I did try that one
Do not try it the hood looks like in ice storm in metal

Dave

Me, tig, mostly overhead. In some unbelievable butthole spot.

[smithdoor]

I can torch weld and braz overhead.
But wear a welding hood or your face will have red spots for weeks

Dave

Me, tig, mostly overhead. In some unbelievable butthole spot.

[John T]

I can torch weld and braz overhead.


Dave

Nobody Cares.

[smithdoor]

Nobody Cares UNTIL YOU NEED THE WORK DONE
A hobbyist does not care just give tig and call good.

Dave

Nobody Cares.

[John T]

I wouldn't call you to shine my shoes,

Never mind welding.

[John T]

Besides,
We have never seen proof you can even strike an arc.

All you do is flap your gums.

[NotaVegetarian]

Let’s all get a cool glass of tea and cool off please

[smithdoor]

Yes
But it fun playing with hobby welder.

Dave

Let’s all get a cool glass of tea and cool off please