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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Abkühlungsparameter</span></h1>
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<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="de" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="de" dir="ltr"><p>Der <b>Abkühlungsparameter</b> <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \lambda }">
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<annotation encoding="application/x-tex">{\displaystyle \lambda }</annotation>
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</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/b43d0ea3c9c025af1be9128e62a18fa74bedda2a.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.355ex; height:2.176ex;" alt="{\displaystyle \lambda }" loading="lazy"></span> ist ein Begriff der <a href="Metallurgie" title="Metallurgie">Metallurgie</a>.
</p><p>Er bezeichnet die Zeit, die für die Abkühlung eines <a href="Stahl" title="Stahl">Stahls</a> von 800 auf 500 °C nötig ist, in der Einheit <a href="Hekto" class="mw-redirect" title="Hekto">Hektosekunden</a>.
Die Angabe <span class="mwe-math-element mwe-math-element-inline"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \lambda }">
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<annotation encoding="application/x-tex">{\displaystyle \lambda }</annotation>
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</math></span><img src="./_assets_/eb734a37dd21ce173a46342d1cc64c92/b43d0ea3c9c025af1be9128e62a18fa74bedda2a.svg" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.355ex; height:2.176ex;" alt="{\displaystyle \lambda }" loading="lazy"></span>=36 bedeutet also, dass die Abkühlung von 800 auf 500 °C etwa 36 hs= 3600 s= 1 h gedauert hat.
Der Abkühlparameter wird vor allem bei der <a href="W%C3%A4rmebehandlung" title="Wärmebehandlung">Wärmebehandlung</a> von <a href="Werkzeugstahl" title="Werkzeugstahl">Werkzeugstählen</a> verwendet.
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