Texture and Strain Induced by a Steel Plate by Warm Cross Roll Rolling

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  • 温間クロスロール圧延鋼板のひずみと集合組織
  • オン カン クロスロール アツエン コウハン ノ ヒズミ ト シュウゴウ ソシキ

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Abstract

The C-cross-sectional shape of a rolled plate and the distribution of equivalent strain introduced by cross roll rolling with cross angles of 0 to 10 degrees and texture formation are studied through a combination of numerical simulation and experimental observation. Strain distributions are predicted by 3-D elastic-plastic finite element method, and the texture is evaluated by examining an ODF figure obtained from X-ray diffraction measurement method. The rolling conditions, in which the C-cross-sectional shape of a 2-pass cross-roll-rolled plate with a cross angle of 10 degrees becomes the same as that of a conventionally rolled plate, are detected by numerical analysis, and then strain distributions through the plate thickness are shown. The 2-pass rolling with cross angles of 0 and 10 degrees is conducted using a shear-added rolling simulator, and the C-cross-sectional shape of the rolled plates is compared with the numerically predicted plate shape. Even if the shapes of the C-cross sections in the rolled plates are the same, the strong texture in the conventionally rolled plate such as {001}<110> does not develop in the cross-roll-rolled plate; furthermore, the orientation density of the γ-fiber texture becomes weak by cross roll rolling.

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