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Furnace Brazing

Discussion in 'The Hokey Ass Message Board' started by Zig Zag Wanderer, Aug 18, 2009.

  1. Zig Zag Wanderer
    Joined: Jul 6, 2007
    Posts: 564

    Zig Zag Wanderer
    Member

    i would like some input on some backyard techniques anyone has used for joining mild steel or cast steel/ductile iron to grey cast iron, such as a cylinder head or a block. i understand the basics of the process, i just want to know more about the alloys used, suitable materials, fluxes, furnace/forge construction, vacuum source etc.
     
  2. TomWar
    Joined: Jun 11, 2006
    Posts: 727

    TomWar
    Member

    Crosley engines were furnace-brazed, You might try looking into that.
     
  3. Zig Zag Wanderer
    Joined: Jul 6, 2007
    Posts: 564

    Zig Zag Wanderer
    Member

    yup, the original "cobra" engine used in first genreration Crosleys (short for copper-brazed-aluminum IIRC). die-cut sheet metal strata were sandwiched with copper layers then furnace brazed together. they had issues with corrosion due to galvanic action within the cooling system and went with an iron block later on
     
    Last edited: Aug 18, 2009

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