EP2602338A1 - Manufacture method for magnesium alloy product - Google Patents

Manufacture method for magnesium alloy product Download PDF

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Publication number
EP2602338A1
EP2602338A1 EP12189944.7A EP12189944A EP2602338A1 EP 2602338 A1 EP2602338 A1 EP 2602338A1 EP 12189944 A EP12189944 A EP 12189944A EP 2602338 A1 EP2602338 A1 EP 2602338A1
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EP
European Patent Office
Prior art keywords
magnesium alloy
cavity
mold
manufacture method
punch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12189944.7A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hsin-Yi Hsieh
Kun-Pao Chang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fair Friend Green Technology Corp
Original Assignee
Fair Friend Green Technology Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fair Friend Green Technology Corp filed Critical Fair Friend Green Technology Corp
Publication of EP2602338A1 publication Critical patent/EP2602338A1/en
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/022—Setting rivets by means of swaged-on locking collars, e.g. lockbolts

Definitions

  • the present invention relates to a manufacture method for a metal product, and more particularly to a manufacture method for a magnesium alloy product.
  • metal materials are, compared to the plastic materials, heavier but with a higher strength.
  • alloy products can have features of lightweight and high strength both.
  • magnesium alloy has some advantages, such as a light weight, good heat dissipation, anti-electromagnetic interference, high hardness and high plasticity.
  • the magnesium alloy has been widely used in some industries.
  • Magnesium alloy processing especially in the housing or case industries, has a large potential in market; and accordingly a variety of key processing technologies are being developed by many manufacturers.
  • the magnesium alloy molding technologies can be categorized to die casting, semi-solid forming, forging and stamping.
  • Today, most of the magnesium alloy products are manufactured by die casting.
  • the magnesium alloy products manufactured by die-casting process basically may have some disadvantages, such as having a higher defective ratio if the thickness thereof is relatively thin, as well as the thermal cracking, oxidation, rhyolite, insufficient strength and unexpected deformation issues.
  • labor-consuming refurbishments are consequently resulted in and thereby increasing the cost.
  • magnesium alloy can only have partial deformation and partial edge deletion and cannot have a specific cross-sectional deformation. In other words, the magnesium alloy cannot be deformed to have a fastening component directly by the stamping process, and have to be equipped with plastic components or other types of component.
  • forging process allows the magnesium alloy billet can have a significant deformation to form an expected cross section.
  • the produced magnesium alloy product can have a smooth surface, so that the subsequent surface process is relatively simple. Therefore, it is worth to keep developing the forging process.
  • FIG. 1A is a schematic cross-sectional view of a conventional mold for a hot-forging process.
  • FIG. 1B is a schematic cross-sectional view of a magnesium alloy product manufactured by the mold shown in FIG. 1A .
  • the mold 100 includes an upper mold 102 and a lower mold 104.
  • a magnesium alloy billet 106 is placed in a cavity 105 of the lower mold 104, and the upper mold 102 and the lower mold 104 are compressed so as to deform the magnesium alloy billet 106 to a magnesium alloy product 110 having a shape corresponding to the mold 100.
  • the upper mold 102 and the lower mold 104 are configured to have a space 108, and through which the excess magnesium alloy billet 106 can flow in the process of compression molding. After the compression molding, the magnesium alloy product 110 is processed by an edge deletion so as to have a more accurate shape. So, the conventional forging process is time-consuming and expensive.
  • one object of the present invention is to provide a manufacture method for a magnesium alloy product capable of reducing cost and deforming a magnesium alloy product with an accurate size.
  • the present invention provides a manufacture method for a magnesium alloy product, which includes steps of: providing a mold, the mold comprising an upper mold and a lower mold, the upper mold having a punch, the lower mold having a cavity, the punch being adapted to be accommodated in the cavity; heating the mold so as to increase the temperature of the cavity to a determined degree; placing a magnesium alloy billet in the heated cavity; and compressing the upper and lower molds so as to drive the punch to deform the magnesium alloy billet to a magnesium alloy product having a shape corresponding to the cavity.
  • the punch in the cavity and an inner wall of the cavity are configured to have a gap of 0.05mm ⁇ 0.1mm.
  • the aforementioned manufacture method further, before the step of heating the mold, includes a step of: measuring the temperature of the cavity, and heating the mold according to the measured temperature.
  • the mold includes a heating pipe arranged an inside thereof, and the heating pipe is configured to heat the mold.
  • the magnesium alloy billet is an extrusion magnesium alloy.
  • the aforementioned manufacture method further, before the step of placing a magnesium alloy billet in the heated cavity, includes a step of: heating the magnesium alloy billet to 300°C ⁇ 500°C.
  • the magnesium alloy billet is heated to 350°C ⁇ 450°C.
  • the predetermined degree is configured in a range of 150°C ⁇ 300°C.
  • the predetermined degree is 180°C ⁇ 250°C.
  • the step of compressing the upper and lower molds is realized by a hydraulic press configured to supply press upon the upper mold.
  • the hydraulic press is configured to have a press speed of 10mm/sec ⁇ 15mm/sec.
  • the compression molding is performed in an almost sealed cavity; thus, the magnesium alloy product can be deformed from the magnesium alloy billet without much flash. Moreover, because the magnesium alloy product can be manufactured without much flash fin, the flash deletion process is not needed any more and consequently the manufacture cost is reduced. In addition, the magnesium alloy product can have continuous streamlines and a better tensile strength.
  • FIG. 1A is a schematic cross-sectional view of a conventional mold for a hot-forging process
  • FIG. 1B is a schematic cross-sectional view of a magnesium alloy product manufactured by the mold shown in FIG. 1A ;
  • FIG. 2 is a schematic flow chart illustrating a manufacture method of a magnesium alloy product in accordance with an embodiment of the present invention
  • FIG. 3A is a schematic cross-sectional view of a mold adapted to use with the manufacture method illustrated in FIG. 2 ;
  • FIG. 3B is a schematic cross-sectional view of a magnesium alloy product manufactured by the mold shown in FIG. 3A .
  • FIG. 2 is a schematic flow chart illustrating a manufacture method of a magnesium alloy product in accordance with an embodiment of the present invention.
  • FIG. 3A is a schematic cross-sectional view of a mold adapted to use with the manufacture method illustrated in FIG. 2 .
  • a mold 310 is provided (step S210).
  • the mold 310 is, for example, constituted by an upper mold 312 and a lower mold 314.
  • the upper mold 312 has a punch 311.
  • the lower mold 314 has a cavity 313.
  • the punch 311 is adapted to be accommodated in the cavity 313.
  • the mold 310 is heated so as to increase the temperature in the cavity 313 to a determined degree (step S220).
  • the predetermined degree is configured in a range of 150°C ⁇ 300°C.
  • the predetermined degree is configured in a range of 180°C ⁇ 250°C.
  • a magnesium alloy billet 302 is placed in the heated cavity 313 (step S230).
  • the magnesium alloy billet 302 is, for example, an extrusion magnesium alloy billet.
  • the magnesium alloy billet 302 can, before being placed in the cavity 313, be heated so as to enlarge the molecular structure thereof and consequently have a semi-solid structure.
  • the magnesium alloy billet 302 can be heated to 400°C ⁇ 500°C first and then placed in the cavity 313; preferably, the magnesium alloy billet 302 is heated to 350°C ⁇ 450°C.
  • the upper mold 312 and the lower mold 314 are compressed to each other through a press upon the upper mold 312, and accordingly the punch 311 is driven to compress the magnesium alloy billet 302 in the cavity 313 so as to deform the magnesium alloy billet 302 to a magnesium product 304, as illustrated in FIG. 3B , having a shape corresponding to the cavity 313 (step S240).
  • the punch 311 in the cavity 313 and an inner wall of the cavity 311 are configured to have a gap D in a range of 0.05mm to 0.1mm for the removal of air from the cavity 313.
  • the press for the compression of the upper mold 312 and lower mold 314 is, for example, supplied by a hydraulic press (not shown). Through the press, the magnesium alloy billet 302 in the cavity 313 can be deformed to the magnesium alloy product 304 having a shape corresponding to the cavity 313.
  • the hydraulic press is configured to have a press speed in a range of 10mm/sec to 15mm/sec to perform the compression molding on the magnesium alloy billet 302.
  • the cavity 313 is an almost sealed space while the magnesium alloy billet 302 is being performed by the compression molding; in other words, the gap D between the upper mold 312 and the lower mold 314 is only configured for the removal of air and there is no space for the overflow of the excess magnesium alloy billet 302.
  • the volume of the cavity 313, for the accommodation of the magnesium alloy billet 302 is previously calculated, for example, in a computer simulation manner, so the magnesium alloy product 304 can have a more accurate size and a better mechanical strength. Accordingly, after being removed from the cavity 313, the magnesium alloy product 304 can have a more refined appearance once the tiny flash fin 304a thereof is removed by the flash removal process.
  • the compression molding is performed in an almost sealed cavity; thus, the magnesium alloy product can be deformed from the magnesium alloy billet without much flash. Moreover, because the magnesium alloy product can be manufactured without much flash fin, the flash deletion process is not needed any more and consequently the manufacture cost is reduced. In addition, the magnesium alloy product can have continuous streamlines and a better tensile strength.
  • a magnesium alloy billet is heated to 400°C ⁇ 500°C first, and then placed in a cavity for the compression molding.
  • the manufactured magnesium alloy product can have some beneficial features, such as having a more uniform and compact mechanical strength.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Forging (AREA)
EP12189944.7A 2011-12-08 2012-10-25 Manufacture method for magnesium alloy product Withdrawn EP2602338A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW100145322A TW201323109A (zh) 2011-12-08 2011-12-08 鎂合金製品的製造方法

Publications (1)

Publication Number Publication Date
EP2602338A1 true EP2602338A1 (en) 2013-06-12

Family

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EP12189944.7A Withdrawn EP2602338A1 (en) 2011-12-08 2012-10-25 Manufacture method for magnesium alloy product

Country Status (4)

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US (1) US20130145810A1 (ja)
EP (1) EP2602338A1 (ja)
JP (1) JP2013119118A (ja)
TW (1) TW201323109A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017162217A1 (zh) * 2016-03-25 2017-09-28 华为技术有限公司 一种电子设备中框配件及其制造方法
CN110743996A (zh) * 2019-11-08 2020-02-04 中国兵器工业第五九研究所 一种高强耐蚀镁合金成形方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101314086B1 (ko) 2013-07-04 2013-10-02 한국기계연구원 스크롤 압축기용 스크롤 열간 단조장치
KR101344970B1 (ko) 2013-08-21 2013-12-24 도외숙 유압호스에 사용되는 니플의 제조방법 및 그 제조방법에 의해 제조된 니플
WO2020138278A1 (ja) * 2018-12-26 2020-07-02 京セラ株式会社 電子部品の接合方法および接合構造体
CN114850375A (zh) * 2022-04-11 2022-08-05 贵州振华华联电子有限公司 一种冲压墩扁模具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001269746A (ja) * 2000-03-27 2001-10-02 Kurimoto Ltd マグネシウム合金製ねじ部品及びその製造装置
EP1640622A1 (en) * 2003-06-19 2006-03-29 Sumitomo (Sei) Steel Wire Corp. Magnesium-base alloy screw and method of manufacturing the same
US20110189480A1 (en) * 2010-02-03 2011-08-04 Kuo-Chen Hung Magnesium Fastener Manufacturing Method and A Magnesium Fastener Member Produced Thereby

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
JP2002254132A (ja) * 2001-02-28 2002-09-10 Kikusui Forging Co-Op マグネシウム合金部材の熱間鍛造成形方法
JP2002361352A (ja) * 2001-06-04 2002-12-17 Koko Tanatsu Kogyo Kofun Yugenkoshi マグネシウム合金製品の成型加工方法
US7174763B2 (en) * 2005-05-05 2007-02-13 American Axle & Manufacturing, Inc. Hotformed hubs and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001269746A (ja) * 2000-03-27 2001-10-02 Kurimoto Ltd マグネシウム合金製ねじ部品及びその製造装置
EP1640622A1 (en) * 2003-06-19 2006-03-29 Sumitomo (Sei) Steel Wire Corp. Magnesium-base alloy screw and method of manufacturing the same
US20110189480A1 (en) * 2010-02-03 2011-08-04 Kuo-Chen Hung Magnesium Fastener Manufacturing Method and A Magnesium Fastener Member Produced Thereby

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ALTAN, TAYLAN; NGAILE, GRACIOUS; SHEN, GANGSHU: "Cold and Hot Forging", 1 February 2005, ASM INTERNATIONAL, Materials Park, Ohio, ISBN: 0-87170-805-1, XP002694090 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017162217A1 (zh) * 2016-03-25 2017-09-28 华为技术有限公司 一种电子设备中框配件及其制造方法
CN110743996A (zh) * 2019-11-08 2020-02-04 中国兵器工业第五九研究所 一种高强耐蚀镁合金成形方法

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US20130145810A1 (en) 2013-06-13
TW201323109A (zh) 2013-06-16
JP2013119118A (ja) 2013-06-17

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