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  1. #1
    Join Date
    Sep 2005
    Location
    stamford,tx
    Posts
    37

    Question

    does anyone know of a chart that has all the melting points of solder,say 50-50 or the melting point of the silver solders that we use in our field?the reason i'm posting is because out lab manual asked for specific temp's and all i could find in our books is 50-50,thanks guys!

    charlie brown

  2. #2
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    Karst means cave. So, I search for caves.

  3. #3
    Join Date
    Sep 2005
    Location
    stamford,tx
    Posts
    37
    thankyou for your help!i'll pass this info along with the web-site to all of my class!!!


    thanyou again!!
    charlie brown

  4. #4
    Join Date
    Jul 2005
    Posts
    31

    Talking

    hey you old roughneck, harley loving act buddy, funny to find you here. see ya in class monday

  5. #5
    Join Date
    Sep 2005
    Location
    stamford,tx
    Posts
    37
    yea you old sporty bastard,i'll see you monday.
    don't be late!!

  6. #6
    Join Date
    Oct 2004
    Posts
    3,400
    JW Harris has a free braze training video.
    See if your instructor has it.
    If he doesn't, send off for it.

    For extra credit, find which supply houses in your area stock Harris products.

  7. #7
    Join Date
    Oct 2004
    Posts
    3,400
    From:

    http://mwsco.com/kb/kb_Tree.asp

    Soldering is defined as a group of joining processes that produce coalescence of materials by heating them to the soldering temperature and by using a filler metal (solder) having a liquidus not exceeding 840F (450C) and below the solidus of the base metals. The solder is distributed between closely fitted faying surfaces of the joint by capillary action.

    Brazing joins materials by heating them in the presence of a filler metal having a liquidus above 840F (450C) but below the solidus of the base metals. Heating may be provided by a variety of processes. The filler metal distributes itself between the closely fitted surfaces of the joint by capillary action. Brazing differs from soldering, in that soldering filler metals have a liquidus below 840F (450C).

    Brazing with silver alloy filler metals is sometimes called silver soldering, a nonpreferred term. Silver brazing filler metals are not solders; they have liquidus temperatures above 840F (450C).

    Brazing does not include the process known as braze welding. Braze welding is a method of welding with a brazing filler metal. In braze welding, the filler metal is melted and deposited in grooves and fillets exactly at the points where it is to be used. Capillary action is not a factor in distribution of the brazing filler metal. Indeed, limited base metal fusion may occur in braze welding.

    Brazing must meet each of three criteria:

    (1) The parts must be joined without melting the base metals.

    (2) The filler metal must have a liquidus temperature above 840F (450C).

    (3) The filler metal must wet the base metal surfaces and be drawn into or held in the joint by capillary action.

    To achieve a good joint, the parts must be properly cleaned and must be protected by either flux or atmosphere during the heating process to prevent excessive oxidation. The parts must be designed to afford a capillary for the filler metal when properly aligned, and a heating process must be selected that will provide the proper brazing temperature and heat distribution.






    [Edited by bwal2 on 09-30-2005 at 02:55 PM]

  8. #8
    all you gave him was the definition of soldering and brazing.

    Solder goes liquious at 450f*

    Silver(45%) melts at about 1100to1200

    15% silfoss at 1250 ti 1300.

    These are in the neighborhood so please dont break my balls over a couple degrees.

  9. #9
    Join Date
    Oct 2004
    Posts
    1,722
    Originally posted by ruffcab69
    Does anyone know of a chart that has all the melting points of solder, say 50-50 or the melting point of the silver solders that we use in our field? proofread
    Is this what you are looking for?

    Harris Filler Metal Selection Chart
    Get back to work.

  10. #10
    Join Date
    Oct 2004
    Posts
    3,400
    Originally posted by curry
    all you gave him was the definition of soldering and brazing.
    The reason I gave him the definition is because he used the term "silver solder".

    I'm pretty sure he is a student, and needs to learn the difference.

    He already had the link to JW Harris, and could look up the specific numbers.

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