Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 9 of 9
  1. #1
    Join Date
    Feb 2014
    Location
    Newcastle NSW
    Posts
    78

    Default Tig brazing rods v's Oxy rods. Any difference?

    Hi guy's and girls, i was given a tube of bronze rods from a mate who got them off his old man a few years ago,
    The rods would be 20 years old at least i'd reckon. My question is would they be suitable to use for Tig brazing or is there something i need to look out for using them for that purpose?

  2. #2
    Join Date
    Oct 2008
    Location
    Mole Creek
    Posts
    45

    Default

    Silicon bronze is preferred for TIG brazing. Anything with zinc in the alloy is not going to be fun. (If you've ever welded anything galvanized you'll understand why.)

    Cheers,...Jon.

    Sent from my Moto G (4) using Tapatalk

  3. #3
    Join Date
    Feb 2014
    Location
    Newcastle NSW
    Posts
    78

    Default

    So breathing apparatus is needed?

  4. #4
    Join Date
    Oct 2008
    Location
    Mole Creek
    Posts
    45

    Default

    Without knowing exactly what type of rods you have there, I can only give generic info and say that they *may* have up to around 40% zinc and will likely have small percentages of other elements like manganese, silicon, tin, iron etc.

    Zinc fumes are seriously not good for you, and manganese aren't great either.

    Also, welding galvanized materials will result in a lot of fumes and a fluffy white zinc oxide mess all over your weld of you don't grind all of the zinc off first.

    I don't know if the high zinc content bronze rods do the oxide plume in the same way, as I've always just listened to the professionals and only used silicon bronze for TIG. If I need to use the manganese bronze filler I fire up the gas torch.

    Either way - don't breathe the fumes!

    Cheers,...Jon.

    Sent from my Moto G (4) using Tapatalk

  5. #5
    Join Date
    Oct 2008
    Location
    Mole Creek
    Posts
    45

    Default

    Oh, I forgot to mention - apparently aluminium bronze has little to no zinc in it, so is also suitable for TIG welding.

    Sent from my Moto G (4) using Tapatalk

  6. #6
    Join Date
    Jan 2004
    Location
    Mackay North Qld
    Posts
    6,446

    Default

    They sound like unfluxed brazing rods.
    No, not suitable for TIG.

    In the hands of a competent O/A operator they can work very well on the correct application.
    Tig is not it!

    grahame

  7. #7
    Join Date
    Oct 2008
    Location
    Mole Creek
    Posts
    45

    Default

    Quote Originally Posted by Jonno_G View Post
    ...also suitable for TIG welding...
    OOPS!!

    That should read 'TIG brazing', not welding - a simple slip.


    Sent from my Moto G (4) using Tapatalk

  8. #8
    Join Date
    Oct 2008
    Location
    Mole Creek
    Posts
    45

    Default

    Quote Originally Posted by Grahame Collins View Post
    ...They sound like unfluxed brazing rods.
    No, not suitable for TIG...
    Not necessarily true!

    Silicon bronze and aluminium bronze are both suitable for either TIG or oxy-fuel brazing.

    If you can't identify them however, it's best to assume that they for oxy-fuel only, as they are quite likely to be manganese bronze which has a high zinc content.

    Jon.

    Sent from my Moto G (4) using Tapatalk

  9. #9
    Join Date
    Jan 2004
    Location
    Mackay North Qld
    Posts
    6,446

    Default

    Quote Originally Posted by Zumanity View Post
    The rods would be 20 years old at least i'd reckon.
    Above is your clue.

    Twenty years back the WIA catalogue lists barzing filler rods as:

    Austrod Tobin bronze alloy

    Austrod Nickel Bronze alloy

    Austrod Maganese Bronze

    These rods are easily identifiable by putting a concentrated flame to the rod and above 800C+ the zinc content will flash off.

    Silicon bronze first appeared as a spooled wire for use with GMAW process and then later as filler rods for use with Tig process.

    My answer specifically referred to those 20 year filler rods that the OP referred to.

    Grahame

Similar Threads

  1. Aluminium Brazing Rods HTS2000
    By jack620 in forum WELDING
    Replies: 10
    Last Post: 12th May 2019, 12:57 AM
  2. Unknown brazing rods
    By phelum in forum WELDING
    Replies: 0
    Last Post: 4th Apr 2012, 07:24 PM
  3. Restarting rods
    By Legion in forum WELDING
    Replies: 18
    Last Post: 9th May 2011, 08:39 PM
  4. The Tig Files - What Filler Rods do I use?
    By NewLou in forum WELDING
    Replies: 4
    Last Post: 11th Apr 2011, 05:07 PM
  5. Welding Rods
    By lnt9000 in forum WELDING
    Replies: 1
    Last Post: 20th Feb 2008, 07:30 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •