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    • 3. 发明公开
    • 내리징성 및 성형성이 우수한 페라이트계 스테인리스강판및 그 제조방법
    • 不锈钢不锈钢板和方法
    • KR1020010062057A
    • 2001-07-07
    • KR1020000072383
    • 2000-12-01
    • 제이에프이 스틸 가부시키가이샤
    • 히라타노리마사요코타다케시가토야스시우지로다쿠미사토스스무
    • C22C38/40
    • C21D6/002C21D8/0205C21D8/0226C21D8/0236C21D8/0263C21D8/0273C21D8/0405C22C38/002C22C38/40
    • PURPOSE: A ferritic stainless steel plate having excellent ridging resistance and formability as well as a manufacturing method thereof are provided with no particular requirement of special chemical compositions such as reduced content of C or N, in addition of Ti or Nb, high purification or control of the Mn/Si rates. CONSTITUTION: The ferritic stainless plate containing a plurality of {111} orientation colonies comprises an assembly of adjacent crystals in which the angle of the direction vector of each crystal relative to an orientation vector vertical to the rolling surface is within about 15 degrees, in which the area ratio of a {111} orientation colony measured for cross section in the direction of the plate thickness cut into the rolling direction is about 30% or more in the regions of between about 1/8 to 3/8 and between 5/8 to 7/8 of the plate thickness within the cross section in the direction of the plate thickness. The method of manufacturing a ferritic stainless steel plate having excellent ridging resistance and formability comprises rough rolling and finish rolling slabs in hot rolling, applying annealing and cold rolling to the resulting hot rolled plates, and applying finish annealing, wherein rolling is conducted at a rolling reduction in at least one pass in rough rolling step of hot rolling of about 30% or more, and maintaining a temperature difference between the center of plate thickness and the plate surface of about 200 deg.C or less in pass where rolling reduction is maximum.
    • 目的:提供具有优异的耐皱纹性和成形性的铁素体不锈钢板及其制造方法,其特征在于不需要特殊的化学成分,例如除了Ti或Nb之外还含有C或N的含量降低,高纯化或控制 的Mn / Si率。 构成:包含多个{111}取向菌落的铁素体不锈钢板包括相邻晶体的组合,其中每个晶体的<111>方向矢量相对于垂直于滚动表面的取向矢量的角度在约15度内 ,其中在沿着轧制方向切割的板厚方向上测量的{111}取向菌落面积比在约1/8至3/8之间的区域中为约30%以上, 在板厚方向的横截面内的板厚度为5/8至7/8。 制造具有优异抗皱性和成形性的铁素体不锈钢板的方法包括在热轧中进行粗轧和精轧板坯,对所得热轧板进行退火和冷轧,并进行最终退火,其中轧制在轧制 将热轧粗轧工序中的至少一次通过减少约30%以上,并且在轧制压下量最大的通过中将板厚中心与板面之间的温差保持在约200℃以下 。