Formulation of a Guideline for the Determination of Heat Transfer Coefficient during Gas Quenching

    Volume 6, Issue 3 (March 2009)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 23 February 2009

    Page Count: 16


    Luebben, Thomas
    Foundation Institute of Materials Science (IWT), Bremen,

    Lohrmann, Michael
    BMW AG, Dingolfing,

    Segerberg, Soeren
    HeattecIVF,

    Sommer, Peter
    Dr. Sommer Materials Technology, Issum-Sevelen,

    (Received 11 April 2008; accepted 23 January 2009)

    Abstract

    During the past years high pressure gas quenching was a very actual subject at different conferences. There were a lot of lectures which used heat transfer coefficient as the most important parameter for the characterization of a gas quenching system. This statement is surely correct, but only fully utilizable—for example, for the comparison of measurements from different authors—when a well defined measurement method was used. Up to 2002 this was not realized. To solve this problem on a national basis the German Research Committee for Quenching has delt with this subject in the period from 1998 to 2002. In a first step the possibly influencing parameters were identified. In a second step most of the parameters were predefined. In a few cases there was no information about the magnitude of the possible influence available (example: evaluation procedure). To answer these remaining questions a round-robin test was carried out. The participants were the companies Ipsen International and Dr. Sommer Werkstofftechnik, Germany, and the institutes IVF Sweden and IWT Bremen, Germany. The results of this work were published in 2002 in the German heat treatment journal HTM including a recommendation for the measurement of heat transfer coefficient at gas quenching (in German language). This paper is a translation of this work and shall help to solve the above-mentioned problem on an international level.


    Paper ID: JAI101781

    DOI: 10.1520/JAI101781

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    Author
    Title Formulation of a Guideline for the Determination of Heat Transfer Coefficient during Gas Quenching
    Symposium , 0000-00-00
    Committee A01