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    • 3. 发明专利
    • Warm drawing apparatus and warm drawing method
    • 温暖绘图设备和温度绘图方法
    • JP2014050857A
    • 2014-03-20
    • JP2012196067
    • 2012-09-06
    • Uacj Corp株式会社UacjNippon Steel & Sumitomo Metal新日鐵住金株式会社
    • KITO KOTAKADA TAKESHI
    • B21D24/04B21D22/20B21D24/00
    • PROBLEM TO BE SOLVED: To provide a warm drawing apparatus and a warm drawing method in which a molding limit of a blank material is high.SOLUTION: The warm drawing apparatus supports the blank material B made of an aluminum plate material by a die 12 and a blank holder 13, makes a punch 14 approach the die 12, and draws the blank material B. Drawing beads 12a and 13a for adjusting an inflow quantity of the blank material B when performing the drawing, are formed in the die 12 and the blank holder 13. In the die 12 and the blank holder 13, projection parts 12b and 13b and recessed parts 12c and 13c are formed so that in a part where one of the die 12 and the blank holder 13 comes in contact with the blank material B, the other does not come in contact with its reverse surface, with respect to the blank material B located more on the outer edge side from the drawing beads 12a and 13a.
    • 要解决的问题:提供一种坯料的成型极限高温拉伸装置和热拉伸方法。热拉伸装置通过模具12支撑由铝板材制成的坯料B, 坯料夹持器13使冲头14接近模具12并拉出坯料B.在模具12和坯料中形成用于调整进行拉拔时的坯料B的流入量的拉丝珠12a,13a 在模具12和坯料保持器13中,突出部分12b和13b以及凹陷部分12c和13c形成为使得模具12和坯料保持器13中的一个与坯料B接触的部分 相对于位于更靠外侧边缘侧的拉丝珠12a和13a的坯料B,另一方不与其反面相接触。
    • 4. 发明专利
    • Method for manufacturing aluminum alloy formed body
    • 制造铝合金成型体的方法
    • JP2014018854A
    • 2014-02-03
    • JP2012163075
    • 2012-07-23
    • Nippon Steel & Sumitomo Metal新日鐵住金株式会社Uacj Corp株式会社Uacj
    • TAKADA TAKESHIKUDO TOMOYUKI
    • B21D22/20B21D22/22B21D22/26
    • PROBLEM TO BE SOLVED: To provide a press forming method by which shape-fixing defect is reduced without increasing a press process upon manufacturing a press-formed body of aluminum alloy.SOLUTION: In the bending/unbending forming of aluminum alloy, the forming is performed in such a manner that: a portion subjected to bending/unbending deformation in a workpiece is heated at 100°C or more; and at least in a period of time after starting the forming, a blank holding pressure [MPa] is set to be 0.03×TS0 or more with respect to a tensile strength TS0[MPa] of the workpiece at normal temperature, preferably is set to be 0.3×T/250×TS1 or more with respect to a tensile strength TS1[MPa] of the workpiece at temperature T°C, or 0.3×t/R×TS0 or more and 3×T/250×t/R×TS1 or more with respect to a plate thickness t [mm] of the workpiece and die radius R [mm].
    • 要解决的问题:提供一种在制造铝合金压制体时不增加冲压加工的形状固定缺陷的冲压成形方法。解决方案:在铝合金的弯曲/非弯曲成形中,成形为 以如下方式执行:在工件中经受弯曲/非弯曲变形的部分在100℃以上加热; 并且至少在开始成型后的一段时间内,相对于常温下的工件​​的拉伸强度TS0 [MPa],坯料保持压力[MPa]设定为0.03×TS0以上,优选设定为 相对于工件在温度T℃下的拉伸强度TS1 [MPa]为0.3×T / 250×TS1以上,0.3×t / R×TS0以上3×T / 250×t / R× TS1以上,相对于工件的板厚t [mm]和模具半径R [mm]。
    • 5. 发明专利
    • Method for producing aluminum alloy blank for press forming, and method for producing aluminum alloy press-formed body using the blank
    • 用于制造用于压制成型的铝合金坯料的方法,以及使用空白生产铝合金压制体的方法
    • JP2013023747A
    • 2013-02-04
    • JP2011161567
    • 2011-07-25
    • Furukawa-Sky Aluminum Corp古河スカイ株式会社Nippon Steel & Sumitomo Metal Corp新日鐵住金株式会社
    • YATSUNO MOTONOBUBABA RIKIZOTAKADA TAKESHI
    • C22F1/05C22C21/02C22C21/06C22C21/12C22F1/00C22F1/057
    • PROBLEM TO BE SOLVED: To provide an aluminum alloy blank for press forming with high formability, high surface quality, and excellent hem bendability, and a press-formed body using the same.SOLUTION: In the method for producing the aluminum alloy blank for press forming, among a region A of the blank with a region inside a punch shoulder projected onto a vertical plane with respect to a pressing direction, a region including a given region X is assumed as a restoration region and an entire blank except the restoration region as a non-restoration region. A restoration process including a step of heating the entire blank and a step of cooling the entire blank below 100°C is performed before press forming. Setting an attained temperature by heating to 200-300°C in the restoration region and 100°C to below 200°C in the non-restoration region, a heating rate in the restoration region to 5°C/second or higher, a retention time at the temperature to 20 seconds or shorter, a cooling rate to 5°C/second or higher, and a residence time of the blank at 100°C or higher within 2 minutes through the restoration process, a proof stress value in the region X alone is reduced to impart a strength difference in the blank.
    • 要解决的问题:提供具有高成形性,高表面质量和优异的卷边弯曲性的压制成型用铝合金坯料和使用该铝合金坯料的压制成形体。 解决方案:在用于冲压成形的铝合金坯料的制造方法中,在具有相对于按压方向投影到垂直平面上的冲压台内的区域的区域A之中,包括给定区域的区域 X被认为是恢复区域和除了恢复区域之外的整个空白作为非恢复区域。 在压制成形之前进行包括加热整个坯料的步骤和将整个坯料冷却至低于100℃的步骤的恢复处理。 在恢复区域中,通过在恢复区域中加热至200-300℃,在非恢复区域中将温度设定为100℃至200℃以下,将恢复区域的加热速度设定为5℃/秒以上, 时间为20秒以下,冷却速度为5℃/秒以上,通过恢复处理2分钟内坯料在100℃以上的停留时间,该区域的试验应力值 单独的X减少以赋予坯料强度差。 版权所有(C)2013,JPO&INPIT
    • 6. 发明专利
    • Method of forming aluminum alloy sheet
    • 形成铝合金板的方法
    • JP2013230483A
    • 2013-11-14
    • JP2012103458
    • 2012-04-27
    • Furukawa-Sky Aluminum Corp古河スカイ株式会社Nippon Steel & Sumitomo Metal Corp新日鐵住金株式会社
    • NOGUCHI OSAMUOKADA TOSHIYATAKADA TAKESHI
    • B21D22/20
    • PROBLEM TO BE SOLVED: To provide a method of performing press forming by suppressing the rupture of a tailored blank which is obtained by butt welding of aluminum alloy sheets which are different in at least one of plate thickness and strength.SOLUTION: A tailored blank 20 is prepared by butt-welding two or more aluminum alloy sheets which are different in at least one of a sheet thickness and strength. When forming the tailored blank 20, the tailored blank 20 is heated so that the material temperature of the base metal 24 of the tailored blank 20 becomes 100-250°C in a state that the heat affected zone 23 of the tailored blank 20 by butt welding is not higher than 80°C, and the heat affected zone 23 is situated between a punch 15 and a die 16 to perform press forming.
    • 要解决的问题:提供一种通过抑制由板材厚度和强度中的至少一种不同的铝合金板的对接而获得的定制坯料的破裂来进行冲压成形的方法。解决方案:定制的坯料20 是通过对板材厚度和强度中的至少一种不同的两种以上的铝合金板进行对焊而制备的。 当形成定制的坯料20时,将定制的坯料20加热,使得定制坯料20的母材金属24的材料温度在定制的坯料20的热影响区域23的对接状态下变为100-250℃ 焊接不高于80℃,并且热影响区23位于冲头15和模具16之间以进行冲压成形。
    • 7. 发明专利
    • Warm press-drawing method of aluminum plate material
    • 铝板材料的压制压印方法
    • JP2013116475A
    • 2013-06-13
    • JP2011264143
    • 2011-12-01
    • Furukawa-Sky Aluminum Corp古河スカイ株式会社Nippon Steel & Sumitomo Metal Corp新日鐵住金株式会社
    • KITO KOTAKADA TAKESHI
    • B21D22/20B21D22/22
    • PROBLEM TO BE SOLVED: To provide a warm press-drawing method of an aluminum plate material, by which a drawing with a deeply drawn shape is made possible and shape freezing property is further improved.SOLUTION: In a method for press-drawing of the aluminum plate material with a die and a punch, blank holder specific pressure is generated by holding the aluminum plate material, to the surface of which lubricating oil or a lubricant is applied, with a die and a blank holder, and the die and the blank holder are relatively moved at the same time to the punch while imparting this specific pressure. The aluminum plate material is held for 0.7-10 seconds at the blank holder specific pressure of ≥0.3 MPa with the die and the blank holder by using the die, blank holder and punch which are heated up to the temperature of 180-300°C, and then a forming stroke section to the bottom dead center in a state where the aluminum plate material is brought into contact with the punch is taken as ≤0.5 second, and this state is held for ≥3 seconds at the bottom dead center.
    • 要解决的问题:为了提供一种铝板材料的热压拉拔方法,通过该铝板材料可以形成具有深冲形的图形并且进一步提高形状的冷冻性能。 解决方案:在用模具和冲头对铝板材进行压制的方法中,通过将铝板材保持在其表面上的润滑油或润滑剂产生坯料保持器的特定压力, 模具和坯料夹持器,并且模具和坯料保持器在赋予该特定压力的同时相对移动到冲头。 通过使用加热到180-300℃的模具,坯料保持器和冲头,通过模具和坯料夹持器将铝板材料在≥0.3MPa的坯料保持器比压下保持0.7-10秒 ,然后在铝板材与冲头接触的状态下到下死点的成形冲程部分为≤0.5秒,该状态在下止点保持≥3秒。 版权所有(C)2013,JPO&INPIT