WO2010087074A1 - Plaque laminée et procédé de fabrication de celle-ci - Google Patents

Plaque laminée et procédé de fabrication de celle-ci Download PDF

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Publication number
WO2010087074A1
WO2010087074A1 PCT/JP2009/070640 JP2009070640W WO2010087074A1 WO 2010087074 A1 WO2010087074 A1 WO 2010087074A1 JP 2009070640 W JP2009070640 W JP 2009070640W WO 2010087074 A1 WO2010087074 A1 WO 2010087074A1
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WIPO (PCT)
Prior art keywords
rolled sheet
rolled
plate
rolling
rolled plate
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Application number
PCT/JP2009/070640
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English (en)
Japanese (ja)
Inventor
正禎 沼野
龍一 井上
伸之 奥田
望 河部
Original Assignee
住友電気工業株式会社
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Publication date
Application filed by 住友電気工業株式会社 filed Critical 住友電気工業株式会社
Publication of WO2010087074A1 publication Critical patent/WO2010087074A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets
    • B21H8/02—Rolls of special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H8/00—Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects, e.g. checkered sheets

Definitions

  • the present invention relates to a rolled plate made of a magnesium alloy that can be suitably used for a casing of a portable electric device and the like, and a manufacturing method thereof.
  • Magnesium alloys containing various additive elements in magnesium have been used as materials for casings of portable electric devices such as mobile phones and notebook computers and members of automobile parts.
  • one of the objects of the present invention is to provide a plate material made of a magnesium alloy, which is thin but has high rigidity, and a method for manufacturing the same.
  • the present invention is a rolled plate made of a magnesium alloy, comprising a plate-like rolled plate main body and a ridge formed integrally with the main body, and this ridge is 10 times or more the thickness of the rolled plate main body. It has the length of.
  • the protrusions integrated with the rolled sheet main body and having a length 10 times the thickness of the rolled sheet main body serve as ribs in the rolled sheet, the rigidity of the rolled sheet can be greatly improved. Therefore, the rolled sheet of the present invention has high rigidity even if the thickness of the rolled sheet body is reduced.
  • the protrusions when the protrusions are integrated with the rolled plate body, the protrusions can be included in a portion deformed by the processing when performing secondary processing such as press processing on the rolled plate.
  • At least one protrusion intersects an arbitrary straight line perpendicular to the length direction of the protrusion on the rolled sheet. If at least one ridge intersects an arbitrary straight line perpendicular to the length direction of the ridge, any ridge will bend even if an attempt is made to bend the rolled sheet using the above arbitrary straight line as a bending allowance. Therefore, it becomes a rolled sheet that is difficult to bend, that is, a highly rigid rolled sheet.
  • the cross-sectional shape of the protrusion is rectangular.
  • the height of the protrusion is equal to or greater than the thickness of the rolled plate body. According to this configuration, the strength of the rolled plate can be improved.
  • the Al content is preferably 8.3 to 9.5% by mass. According to this configuration, it is possible to obtain a rolled sheet having excellent mechanical properties such as strength and difficulty in cracking during plastic deformation and corrosion resistance.
  • the present invention is a method for producing a rolled plate by rolling a material made of a magnesium alloy with a rolling roll, and the rolling roll has a configuration having a groove on its outer periphery, and the material is rolled with this rolling roll.
  • rolling is made of a magnesium alloy having a plate-like rolled plate body and a protrusion formed integrally with the rolled plate body, and the protrusion has a length of 10 times or more the thickness of the rolled plate body.
  • a board is manufactured. According to this configuration, the protrusions can be formed integrally with the plate material with high productivity.
  • the concave grooves are preferably provided along the circumferential direction of the rolling roll. According to this structure, the protrusion along the rolling direction of the rolled sheet can be easily formed.
  • groove is provided in parallel with the width direction of a rolling roll.
  • the ridges orthogonal to the rolling direction can be formed in parallel with a predetermined interval in the rolling direction.
  • the rolled plate of the present invention has a high strength even if it is thin because the ridges are formed on the rolled plate body. Therefore, if the rolled plate of the present invention is used as a casing of a portable device, the weight of the device can be reduced while satisfying the strength required for the device.
  • FIG. 1A is a perspective view of a rolled sheet of the present invention, and shows a rolled sheet provided with a plurality of series-length protrusions arranged in parallel.
  • FIG. 1B is a perspective view of the rolled sheet of the present invention, and shows a rolled sheet provided with a plurality of ridge groups composed of a plurality of ridges arranged in a straight line.
  • FIG. 2A is a partial cross-sectional view of the rolled sheet of the present invention obtained by cutting the rolled sheet of the present invention in a direction orthogonal to the direction in which the protrusions are formed, and shows a rolled sheet having protrusions having a rectangular cross section.
  • FIG. 1A is a perspective view of a rolled sheet of the present invention, and shows a rolled sheet provided with a plurality of series-length protrusions arranged in parallel.
  • FIG. 1B is a perspective view of the rolled sheet of the present invention, and shows a rolled sheet provided with
  • FIG. 2B is a partial cross-sectional view of the rolled sheet of the present invention obtained by cutting the rolled sheet of the present invention in a direction orthogonal to the direction in which the protrusions are formed, and shows a rolled sheet having protrusions having a triangular cross section.
  • FIG. 2C is a partial cross-sectional view of the rolled sheet of the present invention obtained by cutting the rolled sheet of the present invention in a direction orthogonal to the direction in which the protrusions are formed, and shows a rolled sheet having a trapezoidal protrusion in the cross section.
  • FIG. 2D is a partial cross-sectional view of the rolled sheet of the present invention obtained by cutting the rolled sheet of the present invention in a direction perpendicular to the direction in which the protrusions are formed, and shows a rolled sheet having a projected dome-shaped protrusion.
  • FIG. 3A is a schematic view of a rolling roll and a rolled plate produced using the rolling roll, and shows a case where a rolling roll having a groove formed along the circumferential direction of the rolling roll is used.
  • FIG. 3B is a schematic view of a rolling roll and a rolled plate produced using the rolling roll, and shows a case where a rolling roll having a groove formed in parallel to the axial direction of the rolling roll is used.
  • Drawing 4 is an explanatory view about the method of measuring the amount of deflection of the test piece cut out from the rolled sheet concerning an embodiment.
  • the present invention is a rolled plate made of a magnesium alloy, comprising a plate-like rolled plate main body and a ridge formed integrally with the main body, and this ridge is 10 times or more the thickness of the rolled plate main body.
  • a length of a magnesium alloy comprising a plate-like rolled plate main body and a ridge formed integrally with the main body, and this ridge is 10 times or more the thickness of the rolled plate main body.
  • the protrusions integrated with the rolled sheet main body and having a length 10 times the thickness of the rolled sheet main body serve as ribs in the rolled sheet, the rigidity of the rolled sheet can be greatly improved. Therefore, the rolled sheet of the present invention has high rigidity even if the thickness of the rolled sheet body is reduced.
  • the protrusions when the protrusions are integrated with the rolled plate body, the protrusions can be included in a portion deformed by the processing when performing secondary processing such as press processing on the rolled plate.
  • ⁇ Overall configuration of rolled sheet> It can be easily understood by examining the physical properties of the rolled sheet that the rolled sheet of the present invention is obtained by rolling. Typical physical properties include the structure of the rolled plate, tensile strength, hardness, elongation, surface condition, and the like.
  • the plate material when the elongation of the plate material is less than 10%, if the plate material is a rolled plate, judging from the structure of the plate material, a shear band (from fine crystals formed by accumulation of dislocations due to high strain due to rolling) Since the band-like structure) has a mesh shape in the plate thickness cross section, if it is judged from the tensile strength, it is 300 MPa or more, so if it is judged from the surface state, the arithmetic average roughness Ra It can be seen from the fact that (JIS B06001 01) is 1.5 ⁇ m or less.
  • the fact that the protrusions are integrally formed on the rolled plate body can be easily understood by directly observing the rolled plate. For example, if the cross section of the rolled plate is observed with a microscope, it can be confirmed histologically that there is no joint between the rolled plate main body and the protrusions.
  • the protrusion 20 of the rolled sheet 1 of the present invention may be formed on one surface side of the rolled plate body 10. Unlike FIG. 1A, the one surface side of the body 10. And on the other surface side.
  • the protrusions 20 in the rolled plate 1 are calculated by, for example, calculating the average thickness of the rolled plate body 10 and setting the average thickness as the thickness t of the rolled plate body 10. What is necessary is just to prescribe
  • a preferable range of the thickness t of the rolled plate body 10 is 0.3 to 3.0 mm, and a more preferable range is 0.4 to 1.0 mm. This average thickness should just average the measured value in 10 or more different measurement points about the rolled sheet main body 10.
  • the length L of the ridge 20 may be 10 times or more of the thickness t of the main body 10, but from the viewpoint of increasing the rigidity of the rolled plate 1, it is preferably 20 times or more of t, more preferably, It is at least 30 times t.
  • the measured value of the length L is preferably, for example, 30 mm or more if the rolled sheet of the present invention is used as a casing of a mobile phone, and 100 mm or more if it is used as a casing of a personal computer.
  • the ridges 20 may be provided singly or plurally with respect to the rolled plate body 10. In the case of singular, it is preferably formed in a series length from one side of the rolled plate body 10 to a side opposite to the one side. In the case of a plurality, for example, as shown in FIG. 1A, a plurality of long ridges 20 may be arranged in parallel, or as shown in FIG. 1B, the plurality of ridges 20 are arranged on a straight line (L direction). A plurality of protrusion groups may be provided in parallel. Whatever configuration is selected, at least one ridge 20 intersects an arbitrary straight line perpendicular to the length direction of the ridge 20 (two two-dot chain lines shown in the figure as representative). To do.
  • any one of the ridges 20 becomes a bending resistance, so that the rolling plate 1 that is difficult to bend, that is, the highly rigid rolling plate 1 is used. It becomes.
  • the ridges 20 are arranged such that at least two ridges 20 intersect, for example, in a cross shape or a lattice shape. It may be arranged. Also in this case, it is preferable that at least one protrusion 20 intersects a straight line orthogonal to the length direction of the intersecting protrusions 20.
  • the cross-sectional shape of the ridge 20 is not particularly limited.
  • a rectangle see FIG. 2A
  • a triangle see FIG. 2B
  • a trapezoid see FIG. 2C, preferably an isosceles trapezoid
  • a dome see FIG. 2D.
  • the shape may be a semicircular shape, etc.).
  • the width W of the protrusion 20 is preferably in the range of 0.2 to 20 mm.
  • the width W is reduced, the ridge 20 is easily damaged when a physical force is applied to the ridge 20, and when the width W is increased, the degree of weight reduction of the rolled sheet 1 is reduced.
  • the optimum value of the height H of the ridge 20 varies depending on the shape of the ridge 20, but is preferably in the range of about 0.2 to 1.0 mm. More preferably, it is more than this.
  • the height H of the protrusion 20 may be defined from the cross-sectional shape and cross-sectional area of the protrusion 20. Considering the balance between the rigidity imparted to the rolled plate 1 and the weight reduction of the rolled plate 1, the preferred cross-sectional area of one protrusion 20 is 0.15 to 1.5 mm 2 . Then, the height H may be set so as to satisfy the preferable range of the width W described above with the selected cross-sectional shape while satisfying the area range. For example, in the case of the ridge 20 having a rectangular cross section, the height H may be set by setting the width W to 0.2 to 4 mm.
  • the number of ridges 20 formed on the rolled plate body 10 is not particularly limited. However, if the number of the protrusions 20 is too large, the effect of reducing the weight of the rolled sheet 1 is reduced. Therefore, if a plurality of ridges 20 are formed on the rolled plate body 10, the interval S between adjacent ridges 20 is set to 15 mm or more, and the ridges 20 formed on the rolled plate 1 are adjusted to an appropriate number. It is preferable. If there is even one ridge 20, it has the effect of improving the strength of the rolled sheet 1.
  • the magnesium alloy which comprises a rolled sheet is not specifically limited.
  • an Mg-Al based alloy containing Al for example, an AZ based alloy in the ASTM standard (Mg—Al—Zn based alloy, Zn: 0.2 to 1.5 mass%), AM alloy (Mg—Al—Mn alloy, Mn: 0.15 to 0.5 mass%), AS alloy (Mg—Al—Si alloy, Si: 0.6 to 1.4 mass%), An Mg—Al—RE (rare earth element) alloy or the like is preferable.
  • an AZ91 equivalent material containing 8.3 to 9.5% by mass of Al (for example, AZ91E; containing 8.3 to 9.2% by mass of Al, AZ91D; Al containing 8.5 to 9.5% by mass of Al) Is excellent in mechanical properties such as strength and resistance to cracking during plastic deformation and corrosion resistance.
  • ⁇ Method for producing rolled sheet of the present invention In order to manufacture a rolled plate in which the ridges are integrally formed on the rolled plate body, the ridges may be formed on the rolled plate body simultaneously with the rolling of the material. Below, the manufacturing method of the rolled sheet of this invention is demonstrated concretely.
  • the method for producing a rolled sheet according to the present invention is a method for producing a rolled sheet by rolling a material made of a magnesium alloy using a rolling roll, and the rolling roll has a groove having an outer periphery, and this rolling
  • the rolled sheet of the present invention is produced by rolling the material with a roll.
  • a rolling roll having a groove in the final pass may be used.
  • the groove formed in the rolling roll may be provided along the circumferential direction of the rolling roll, or may be provided in parallel to the width (axis) direction of the rolling roll.
  • 3A and 3B are schematic views of the rolling roll R in which the concave groove G is formed and the rolled sheet 1 formed by the rolling roll R.
  • FIG. 1 is schematic views of the rolling roll R in which the concave groove G is formed and the rolled sheet 1 formed by the rolling roll R.
  • the concave groove G is formed along the circumferential direction of the rolling roll R (circular arrow in the figure), theoretically, in the rolling direction of the rolled sheet 1 (straight arrow in the figure).
  • the projecting ridges 20 can be formed indefinitely.
  • the groove G formed in the rolling roll R does not need to be continuous in the circumferential direction, and may be divided in the middle.
  • the protrusions 20 having a predetermined length in the rolling direction are intermittently formed on the rolled plate 1 with a predetermined interval.
  • the ridges 20 perpendicular to the rolling direction can be formed in parallel with a predetermined interval in the rolling direction. it can. Further, according to this configuration, since the rolling direction and the formation direction of the groove G are orthogonal to each other during rolling, the material easily enters the groove G. Therefore, even if the concave groove G is deepened, it is possible to form the ridge 20 in which the shape of the concave groove G is accurately transferred.
  • Test Example 1 A rolled plate made of a plurality of magnesium alloys was produced and its strength was measured.
  • It consists of a magnesium alloy having a composition corresponding to AZ31 (Mg-3.0 mass% Al-1.0 mass% Zn) and a composition corresponding to AZ91 (Mg-9.0 mass% Al-1.0 mass% Zn).
  • a plurality of material plates were prepared. The material plate in this test example was obtained by twin roll casting, but may be obtained by other methods such as extrusion.
  • a multi-pass rolling roll was prepared, and a rolled sheet having a final thickness of 0.5 mm was prepared by gradually reducing the thickness of the material sheet.
  • a normal rolling roll without unevenness is used for the upper rolling roll, and a plurality of concave grooves as shown in FIG. 3A is used for the lower rolling roll.
  • a roll R in which G is formed in parallel in the circumferential direction of the roll R was used.
  • test piece was prepared by cutting each obtained rolled plate into a size of 150 mm ⁇ 30 mm.
  • the test piece P obtained from the rolled sheet 1 having the ridges 20 was prepared so as to have one ridge 20 in the long side direction of the test piece P (see FIG. 4 described later).
  • the test piece P was arranged so as to be passed over two support bases A and B arranged with an interval of 100 mm.
  • the lengths of the portions of the test piece P on the support bases A and B are the same.
  • the test piece P which has the protrusion 20 it was made for the extending
  • a deflection amount (mm) of the test piece P was measured by applying a load of 1 kg from above to the middle part of the test piece P that is not supported by the support bases A and B.
  • a load was applied to the portion of the ridge 20 (see FIG. 4).
  • Table 1 shows the measured deflection amount of each test piece P.
  • the samples 2 and 4-6 having the protrusions 20 have a smaller amount of deflection and higher rigidity than the samples 1 and 3 without the protrusions 20.
  • the samples 7 and 8 are seen, if the thickness t of the rolled plate 1 is increased, the weight of the rolled plate 1 cannot be reduced, but the rigidity of the rolled plate 1 is increased.
  • the sample 5 in which the height H of the ridge 20 is 0.5 mm is superior to the sample 4 in which the height H is 0.2 mm.
  • the sample 6 in which the cross-sectional shape of the ridge 20 is rectangular is superior in rigidity to the sample 4 having an isosceles trapezoid.
  • Samples 2 and 4-6 having the above-described protrusions can be subjected to secondary processing. Specifically, when pressing was performed on these samples by bending the rolled plate at a right angle in a direction perpendicular to the extending direction of the protrusions, all the samples could be processed without causing damage. However, it is necessary to pay attention to those having a ridge having a rectangular cross section because damage may occur when the height H of the ridge is increased.
  • the magnesium alloy member of the present invention can be suitably used for a member that is desired to be lightweight, such as a portable device or a housing of a personal computer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

L'invention porte sur une plaque en alliage de magnésium laminée ayant une nervure qui est formée en une seule pièce avec la plaque, la nervure ayant une hauteur de plus de 10 fois l'épaisseur de la plaque, assurant à la plaque une rigidité élevée. L'invention porte également sur un procédé de fabrication d'une plaque en alliage de magnésium au moyen d'un rouleau ayant une rainure autour de la périphérie de celui-ci.
PCT/JP2009/070640 2009-01-27 2009-12-10 Plaque laminée et procédé de fabrication de celle-ci WO2010087074A1 (fr)

Applications Claiming Priority (2)

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JP2009015813A JP2010172909A (ja) 2009-01-27 2009-01-27 圧延板、および圧延板の製造方法
JP2009-015813 2009-01-27

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WO2010087074A1 true WO2010087074A1 (fr) 2010-08-05

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103962376A (zh) * 2014-03-29 2014-08-06 吉林大学 一种镁合金大压向量轧制方法
TWI610778B (zh) * 2016-10-27 2018-01-11 宜營機械有限公司 板材輾壓機
JP2018099699A (ja) * 2016-12-19 2018-06-28 トヨタ自動車株式会社 差厚金属板の製造方法、プレス部品の製造方法及び加工機
CN108296290A (zh) * 2018-01-30 2018-07-20 张培栋 一种蒙皮板的加工方法及铝合金碾压设备
US10851447B2 (en) 2016-12-02 2020-12-01 Honeywell International Inc. ECAE materials for high strength aluminum alloys
CN112387798A (zh) * 2019-08-13 2021-02-23 青岛海尔多媒体有限公司 用于制作电子设备外壳的方法及系统
US11649535B2 (en) 2018-10-25 2023-05-16 Honeywell International Inc. ECAE processing for high strength and high hardness aluminum alloys

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
CN105107840B (zh) * 2015-08-06 2017-05-31 上海应用技术学院 镁合金板材表面剧烈变形轧制装置及方法
JP2021062375A (ja) * 2019-10-10 2021-04-22 継介 佐々木 表面に凹凸模様を形成した圧延線材及び線材の圧延方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02229601A (ja) * 1989-03-03 1990-09-12 Sumitomo Metal Ind Ltd 突起付き厚鋼板の製造方法
JPH04344843A (ja) * 1991-05-23 1992-12-01 Aichi Steel Works Ltd 溝付鋼板の製造方法
JP2008212980A (ja) * 2007-03-05 2008-09-18 Nippon Kinzoku Co Ltd 異形断面長尺薄板コイル及びこれを使用した成形体
JP2008308703A (ja) * 2007-06-12 2008-12-25 Mitsubishi Alum Co Ltd 連続鋳造圧延用マグネシウム合金およびマグネシウム合金材料の製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02229601A (ja) * 1989-03-03 1990-09-12 Sumitomo Metal Ind Ltd 突起付き厚鋼板の製造方法
JPH04344843A (ja) * 1991-05-23 1992-12-01 Aichi Steel Works Ltd 溝付鋼板の製造方法
JP2008212980A (ja) * 2007-03-05 2008-09-18 Nippon Kinzoku Co Ltd 異形断面長尺薄板コイル及びこれを使用した成形体
JP2008308703A (ja) * 2007-06-12 2008-12-25 Mitsubishi Alum Co Ltd 連続鋳造圧延用マグネシウム合金およびマグネシウム合金材料の製造方法

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103962376A (zh) * 2014-03-29 2014-08-06 吉林大学 一种镁合金大压向量轧制方法
TWI610778B (zh) * 2016-10-27 2018-01-11 宜營機械有限公司 板材輾壓機
US10851447B2 (en) 2016-12-02 2020-12-01 Honeywell International Inc. ECAE materials for high strength aluminum alloys
US11248286B2 (en) 2016-12-02 2022-02-15 Honeywell International Inc. ECAE materials for high strength aluminum alloys
US11421311B2 (en) 2016-12-02 2022-08-23 Honeywell International Inc. ECAE materials for high strength aluminum alloys
JP2018099699A (ja) * 2016-12-19 2018-06-28 トヨタ自動車株式会社 差厚金属板の製造方法、プレス部品の製造方法及び加工機
CN108296290A (zh) * 2018-01-30 2018-07-20 张培栋 一种蒙皮板的加工方法及铝合金碾压设备
CN108296290B (zh) * 2018-01-30 2019-08-09 张培栋 一种蒙皮板的加工方法及铝合金碾压设备
US11649535B2 (en) 2018-10-25 2023-05-16 Honeywell International Inc. ECAE processing for high strength and high hardness aluminum alloys
CN112387798A (zh) * 2019-08-13 2021-02-23 青岛海尔多媒体有限公司 用于制作电子设备外壳的方法及系统
CN112387798B (zh) * 2019-08-13 2024-05-14 青岛海尔多媒体有限公司 用于制作电子设备外壳的方法及系统

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TW201036724A (en) 2010-10-16

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