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    Brazing and Soldering

    Uploaded by

    Ajij Mujawar
    Brazing and soldering involve joining metal pieces using a filler metal. In brazing, only the filler metal melts and bonds the pieces, while in soldering the filler metal must melt below 450°C. Both processes use capillary action to draw the molten filler metal into the joint. Brazing can be done via torch, furnace, dipping, or induction heating methods and is used to join dissimilar metals. Soldering typically uses a soldering iron and the filler is called solder. Both brazing and soldering allow for joining of different materials with low temperatures, minimal distortion, and versatility.

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    Brazing and Soldering

    Uploaded by

    Ajij Mujawar
    221 views15 pages
    Brazing and soldering involve joining metal pieces using a filler metal. In brazing, only the filler metal melts and bonds the pieces, while in soldering the filler metal must melt below 450°C. Both processes use capillary action to draw the molten filler metal into the joint. Brazing can be done via torch, furnace, dipping, or induction heating methods and is used to join dissimilar metals. Soldering typically uses a soldering iron and the filler is called solder. Both brazing and soldering allow for joining of different materials with low temperatures, minimal distortion, and versatility.

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    Brazing and Soldering

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    Brazing and soldering involve joining metal pieces using a filler metal. In brazing, only the filler metal melts and bonds the pieces, while in soldering the filler metal must melt below 450°C. Both processes use capillary action to draw the molten filler metal into the joint. Brazing can be done via torch, furnace, dipping, or induction heating methods and is used to join dissimilar metals. Soldering typically uses a soldering iron and the filler is called solder. Both brazing and soldering allow for joining of different materials with low temperatures, minimal distortion, and versatility.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    221 views15 pages

    Brazing and Soldering

    Uploaded by

    Ajij Mujawar
    Brazing and soldering involve joining metal pieces using a filler metal. In brazing, only the filler metal melts and bonds the pieces, while in soldering the filler metal must melt below 450°C. Both processes use capillary action to draw the molten filler metal into the joint. Brazing can be done via torch, furnace, dipping, or induction heating methods and is used to join dissimilar metals. Soldering typically uses a soldering iron and the filler is called solder. Both brazing and soldering allow for joining of different materials with low temperatures, minimal distortion, and versatility.

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    © All Rights Reserved
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    Soldering and brazing

    provide permanent joint


    to bond metal pieces.

    Soldering and brazing


    process lie some where
    in between fusion welding
    and solid state welding.
    In case of brazing joining of metal pieces is
    done with the help of filler metal.

    Filler metal is melted and distributed by


    capillary action between the faying surfaces
    of the metallic parts being joined.
    In this case only filler metal melts, there isno
    melting of workpiece metal.

    The melting point of filler metal shouldbe


    more than 450oC.
    The filler metal is drawn
    through the joint to create this
    bond is capillary action. In a
    brazing operation, you apply
    heat broadly to the base
    metals. The filler metal is then
    brought into contact with the
    heated parts. It is melted
    instantly by the heat in the
    base metals and drawn by
    capillary action completely
    through the joint.
    Torch brazing - flux is applied to the part
    surfaces and a torch is used to focus flame
    against the work at the joint. A reducing flame
    is used to prevent the oxidation.

    Furnace brazing - used to heat the workpiecesto


    be joined by brazing operation. The
    component parts and brazing metal are
    loaded into a furnace, heated to brazing
    temperature, and then cooled and removed.
    Dip brazing - assembled parts are typically
    dipped in a heated chemical bath which serve
    as both fluxing agent and heat source to melt
    pre-applied filler material.

    Induction brazing – a process that uses


    electrical resistance of workpiece and high
    frequency current induced into the same as a
    source of heat generation. The parts are pre-
    loaded with filler metal and placed in a high
    frequency ACfield.
    Soldering is very much similar to brazing.

    The major difference lies with the filler metal, the filler
    metal used in case of soldering should have the
    melting temperature lower than 450oC.
    Soldering is normally done by melting the solder
    with a soldering iron and applying it to the two
    metals that are going to be joined together.

    The filler metal used in the process is called solder,


    which distributes between the closely fitted
    surfaces.
    Iron soldering - The oldest and simplest
    soldering method and is still widely used
    today. Soldering irons have copper tips which
    easily stores and transfers heat to the joint.

    Wave soldering -A specific method used in the


    fabrication of electronic components and
    printed circuit boards (PCB). In this method,
    continually circulating fountains or waves of
    solder are lifted into contact with the joints.
    Brazing : Aluminum-silicon ,Copper, Copper-
    phosphorus, Magnesium, Silver, Nickel alloys.

    Soldering : combinations of tin-lead,tin-silver-


    lead, tin-zinc, silver-copper-zinc and zinc-
    aluminum alloys.
     Joining dissimilar metals and
    non-metals.
     Low temperature compared
    to welding.
     less thermal distortion.
     Less chance of damage
     Speed of joining.
     Less manual skills.
     Low strength. .

     damaged under high


    temperature condition .
     Brazing and soldering are process that have many
    great advantages that are often overlooked.

     They are an excellent process for portable


    applications and the versatility makes them great
     choices for many jobs.

    Their ability to join may different materials with a


    limited variety of fluxes and filler metals reduces
     the need for a large inventory ofmaterials.
    Thank You

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