Distortion effects encountered in the use of thin plate within the shipbuilding sector have been widely recognised as being a feature that will never be completely eliminated. Once the root causes have been identified and counteracted, the most economically and controllable form of heat straightening has to be established. In the past there has been a significant lack of knowledge or control over heat straightening processes for thin plate, and in some instances this has led to more extreme distortion in the form of thin plate buckling. The application of the Terac induction heating system has been evaluated and its benefits in reducing the rework times have been established. In addition, work was carried out to evaluate the effects that the heating has had on the material properties and the microstructure of the plate. In each case, no detrimental effects were established. The Terac induction heating system developed for the heat straightening of thin plate has been shown to be capable of bringing significant panel deflections within tolerance. When compared to an alternative method it was also shown to have superior performance. Examinations of heated areas in plate thicknesses down to 4 mm indicated that the process was not detrimental to the parent plate properties. There was a slight increase in hardness in the heated region when Lloyds Grade DH 36 was being tested.


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    Title :

    Induction heat straightening - A distortion rework reduction tool for thin plate


    Contributors:

    Published in:

    Welding and Cutting ; 7 , 3 ; 162-166


    Publication date :

    2008


    Size :

    5 Seiten, 8 Bilder, 2 Tabellen, 6 Quellen


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






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