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Dictionary of Industry Terms

  • RANDOM LENGTHS :
    Lengths can be specified, but, if random lengths are permitted, cutters have a spread from 2 to 5 feet,depending on ordered length and size.

  • RED SHORTNESS :
    Brittleness in red hot steel.

  • RED SHORTNESS :
    Brittleness in steel when it is red hot.

  • REDUCTION OF AREA :
    The difference between the original cross sectional area and that of the smallest area at point of rupture. It is usually stated as a percentage of the original area.

  • REFINING TEMPERATURE :
    Temperature at which the grain size and structure of the steel is refined, usually just above Ac3.

  • REGENERATIVE QUENCHING :
    Double quenching carburized parts to refine case and core.

  • RIMMED STEEL :
    By control of analysis, temperature, etc. if is possible to produce a steel which when poured into molds will partly deoxidize itself on the surface which is in contact with the mold. This type of deoxidation or killing leaves a surface of almost pure iron and drives the other constituents and impurities towards the center of the ingot. When such aft ingot is sectioned and etched the skin or rim shows up plainly and thus the name "rimmed steel" was suggested. Rimmed Steel is usually under 0.25 carbon and low in silicon and manganese, and is largely used for the production of soft wire, sheets, etc.
 
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