厚鋼板の制御冷却中の反り解析

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タイトル別名
  • Analysis on Warping of Steel Plate under Controlled Cooling
  • アツコウハン ノ セイギョ レイキャクチュウ ノ ソリ カイセキ

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A numerical analysis on the warping of steel plates during the controlled cooling, has been conducted by beam model with one-dimensional stress and thermo-elastic-plastic material. In order to prove the validity of this analysis, experiments were conducted using a newly designed experimental device. The continuous changes in temperature and warping were measured in water cooling.<BR>(1) The validity of this analysis was quantatively proved by comparison with the experiment results. It is expected that this caluulation technique will be applied to control of warping of steel plates and shape steels in the controlled cooling process.<BR>(2) From the results of this analysis, it was found that the main factors of warping were phase transformation, yield stress and thermal conductivity.<BR>(1)In the case of low-temperature-transformation, both warping behavior during cooling and residual warp are large, because of large expansion in phase transformation and high yield stress at low temperature.<BR>(2)A higher yield stress leads to a larger warping.<BR>(3)A higher thermal conductivity leads to a high, steep temperature slope in thickness, which causes a higher thermal stress and larger warping.

収録刊行物

  • 鉄と鋼

    鉄と鋼 83 (8), 490-495, 1997

    一般社団法人 日本鉄鋼協会

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