公开(公告)号：KR1020040076944A

公开(公告)日：2004-09-04

申请号：KR1020030012258

申请日：2003-02-27

Applicant: 현대자동차주식회사

Inventor： 홍승현

IPC: B21B3/00

Abstract: PURPOSE: A method for inhibiting ridging of Al-Mg-Si alloy sheet is provided to suppress development of Goss orientation and substantially reduce ridging of the alloy sheet accordingly by properly controlling shape factor (l/d) related with size and reduction ratio of rolling rolls in the rough rolling step during hot rolling. CONSTITUTION: The method comprises the process of maintaining shape factor (l/d) in front of rough rolling represented in the following mathematical expression to 0.8 or less and maintaining shape factor (l/d) in rear of rough rolling to 0.5 or more as maintaining frictional coefficient of rolling rolls with the work to 0.1 or less in the rough rolling step when hot rolling an alloy slab in the manufacturing process of the Al-Mg-Si alloy sheet. In mathematical expression, l is length of the roll projected on the sheet in a rolling roll bite, d is an average thickness of the sheet, R is radius of the rolling rolls, di is an initial thickness of the sheet, and df is a final thickness of the sheet.

Abstract translation: 目的：通过适当控制与轧制尺寸和压下率有关的形状因子（l / d），提供抑制Al-Mg-Si合金板的皱纹的方法，以抑制高斯取向的发展，并大大减少合金薄片的皱纹 在热轧期间在粗轧步骤中进行轧制。 构成：该方法包括将以下数学式表示的粗轧前的形状系数（l / d）维持在0.8以下，将粗轧后的形状系数（l / d）维持在0.5以上的方法作为 在Al-Mg-Si合金板的制造工序中热轧合金坯料时，在粗轧工序中将轧制辊的摩擦系数保持在0.1以下。 在数学表达式中，l是在轧制辊中投影在片材上的辊的长度，d是片材的平均厚度，R是轧辊的半径，di是片材的初始厚度，df是 片材的最终厚度。

公开(公告)号：KR1020040074156A

公开(公告)日：2004-08-23

申请号：KR1020030009714

申请日：2003-02-17

Applicant: 현대자동차주식회사

Inventor： 홍승현

IPC: B21B3/00

Abstract: PURPOSE: A method for increasing formability of aluminum-magnesium alloy sheet is provided to actively control texture in alloy and increase average plastic strain ratio by using cross rolling process for converting rolling direction to an angle of 90 degrees per each pass during cold rolling in the manufacturing process of aluminum-magnesium alloy sheet. CONSTITUTION: The method for increasing formability of aluminum-magnesium alloy sheet comprises the process of rolling aluminum-magnesium alloy as converting rolling direction to an angle of 90 degrees per each pass during cold rolling in the manufacturing process of aluminum-magnesium alloy sheet, thereby developing the {011} texture in such a manner that {011} texture has at least 15% or more of volume fraction for the total volume after performing final annealing.

Abstract translation: 目的：提供一种提高铝 - 镁合金板材成型性的方法，主动控制合金中的质地，并通过使用交叉轧制方法提高平均塑性应变比，将轧制方向转换成冷轧过程中每道次90度的角度 铝镁合金板的制造工艺。 构成：提高铝 - 镁合金板的成型性的方法包括在铝 - 镁合金板的制造过程中，在冷轧期间将铝镁合金轧制方向轧制方向转换成每次90度的过程，由此 以{011} <755>质地的方式开发{011} <755>纹理，在进行最终退火后，总体积的体积分数至少为15％或更多。