User Tag List

Likes Likes:  0
Results 1 to 3 of 3

Thread: Question about oxygen-propane setup

  1. #1
    Join Date
    Jun 2012
    Location
    Charlotte, NC
    Posts
    1
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Question about oxygen-propane setup

    Hi. This is my first post here. Recently, I decided I was going to build a single speed cross frame, and I have tons of questions

    I read a book telling me to use MAPP gas, but it does not seem ideal. At my old job at the dental lab, I used an oxygen-propane setup to melt metals for crown and bridge frameworks which I still have access to. To have a flame with a consistent temperature every time, I would limit the pressure on the oxygen regulator. I light up the propane, turn up the oxygen all the way till it hits the limit, and then turn back the propane until I had my desired flame size.

    Does anyone know if this setup would work well? If so, what pressure should I limit the oxygen to for silver brazing, is there a formula or online calculator anywhere based on flame temp. Being a mechanical engineer, i should know this, but I don't feel like digging up my thermo book.
     

  2. #2
    Join Date
    Apr 2012
    Location
    Union,Missouri
    Posts
    385
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Question about oxygen-propane setup

    Get an Oxy-Acetylene set up.
    (and welcome to the VS)
    Luke
    “So this is how the world works, all energy flows according to the whims of the great magnet." - HST

  3. #3
    Join Date
    Sep 2009
    Location
    Alaska
    Posts
    183
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Question about oxygen-propane setup

    Quote Originally Posted by wojtek View Post
    Hi. This is my first post here. Recently, I decided I was going to build a single speed cross frame, and I have tons of questions

    I read a book telling me to use MAPP gas, but it does not seem ideal. At my old job at the dental lab, I used an oxygen-propane setup to melt metals for crown and bridge frameworks which I still have access to. To have a flame with a consistent temperature every time, I would limit the pressure on the oxygen regulator. I light up the propane, turn up the oxygen all the way till it hits the limit, and then turn back the propane until I had my desired flame size.

    Does anyone know if this setup would work well? If so, what pressure should I limit the oxygen to for silver brazing, is there a formula or online calculator anywhere based on flame temp. Being a mechanical engineer, i should know this, but I don't feel like digging up my thermo book.
    You are correct about Mapp/air, but it will ignite that book quite nicely.

    oxy/propane is a viable alternative to oxy/acetylene
    What size torch does this dental lab have?
    I think Strawberry Andy (not on here to the best of by knowledge but on Framebuilders) uses oxy/propane so may be able to provide more usefull info.

    IIRC when I borrowed my wifes oxy/propane setup and stuck my torch head on I stepped up a nozzle size and kept pressure at 5 and 5 and shot for a neutralish flame.
     

Similar Threads

  1. What is going on with this brake setup?
    By WayneJ in forum General Discussion
    Replies: 24
    Last Post: 03-13-2012, 04:28 PM
  2. Crazy setup changes
    By frenk in forum General Discussion
    Replies: 7
    Last Post: 03-04-2012, 06:19 PM
  3. srm pvc setup
    By jabradley in forum General Discussion
    Replies: 17
    Last Post: 01-19-2011, 09:22 AM
  4. novel stem setup
    By Jacques in forum General Discussion
    Replies: 23
    Last Post: 07-09-2010, 02:50 PM
  5. SS and 1x9 setup
    By Nathanrtaylor in forum General Discussion
    Replies: 14
    Last Post: 06-22-2010, 01:13 PM

Bookmarks

Bookmarks

Posting Permissions

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