I need to plug a brass pipe with a metal plug (bout 15 mm long). The pipe is thin (under 10 mm diameter, under 1 mm wall thickness), and the weld has to be both heat resistant (soldering wouldn't work) and as mechanically resistant as possible. How can I do it?
Forgot to mention, the pipe will be subjected to heat above 300 degrees Celsius.
You could probably silver solder it.
>You could probably silver solder it.
This. Check the temp ratings though.
>Above 300C is a challenge for most solders. You will need to look into brass brazing rods. You will need a good torch (lots of heat), brass braze rods, and some good flux.
Or this. Brazing to brass is kinda a pain in the ass though as the base material and the filler metal are at the same melting point so you gotta get in and out real quick like to avoid collapsing the brass too much.
>the base material and the filler metal are at the same melting point
Brazing rods are an alloy with a reduced melting point.
Silver content is important. Go with 15% or more.
>Go with 15% or more.
I meant 5% or more.
I use 10% most of the time.
>I use 10% most of the time.
good advice. I use 10% about 80% of the time.
Above 300C is a challenge for most solders. You will need to look into brass brazing rods. You will need a good torch (lots of heat), brass braze rods, and some good flux.
>heat resistant
how much heat resistant?
Ye brazing is the best way. A small Mapp gas plumbing torch will be enough. Braze will melt at between 600 and 900 celsius depending on the rod. The plug needs to slip over the pipe. Dont try to braze it end to end like welding or it'll be really weak.
Why are you shilling a bernzomatic ts8000 this hard?
I have one. That style for both Mapp and propane is awesome. Beefy as hell
>map gas
>braze
Bruh
you are moronic and dont know what youre talking about. I braze small copper pipes at work with a torch like this all time. read the original post hes not brazing 4 inch brass pipe here.
And no im not shilling benzomatic, I use a rothenberger 🙂
Braze
Braze it (420)
you can weld brass but its not a fun process you need to be a good tig welder with a good back purge setup to keep the puddle from collapsing the tube heat control will be key
Oxy acetylene with a 0.5mm-1mm tip. But you need to be a pro in that to do it properly.
You could try producing sleeve inlets and braze them.
why not swage/crimp the tube onto the plug
Tig weld it with low amps, pulse and phosphorous bronze filler. chamfer the plug beforehand
swagelok with a blind body. its how we do it ar work.