THE EFFECT OF THERMAL FABRICATION PRACTICES ON ALUMINUM

Various thermal practices may be used during metal fabrication. Although certain operations are routine for steel, they are not for aluminum. The properties of aluminum are different from those of steel, and the effect of high temperature on each metal is different. Aluminum does not experience any color change while being heated to the melting point. Temperature control is essential in order to prevent damage, to minimize the loss of mechanical properties, and to safeguard against reduced corrosion resistance. Hot forming and flame straightening can be used effectively to fabricate aluminum provided adjustments are made to the shipyard's routine steel practices. Even with the best procedures the post thermal properties of thick, heavy, aluminum parts may be below the published minimums. Accordingly, parts that are exposed to high temperatures for extended periods of time should be designed with reduced properties in mind. Ship structures must meet prescribed fairness tolerances. Distorted aluminum assemblies can be brought within standards through the use of a flame/quench technique. The shipyard's procedures must be approved for Navy work and scrupulously followed by trained crews in order to obtain acceptable results.

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  • Corporate Authors:

    American Society of Naval Engineers

    Suite 507, 1012 14th Street, NW
    Washington, DC  USA  20005
  • Authors:
    • Hay, R A
    • Holtyn, C H
  • Publication Date: 1980-10

Media Info

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Filing Info

  • Accession Number: 00323316
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 6 1981 12:00AM