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US20040067153A1 - Method for producing composite metal product - Google Patents

Method for producing composite metal product Download PDF

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Publication number
US20040067153A1
US20040067153A1 US10/645,333 US64533303A US2004067153A1 US 20040067153 A1 US20040067153 A1 US 20040067153A1 US 64533303 A US64533303 A US 64533303A US 2004067153 A1 US2004067153 A1 US 2004067153A1
Authority
US
United States
Prior art keywords
metal
composite
carbon nano
metal product
granules
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.)
Abandoned
Application number
US10/645,333
Other languages
English (en)
Inventor
Atsushi Koide
Kiyoto Takizawa
Yoshitoshi Yamagiwa
Masashi Suganuma
Mamoru Miyagawa
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.)
Nissei Plastic Industrial Co Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to NISSEI PLASTIC INDUSTRIAL CO., LTD. reassignment NISSEI PLASTIC INDUSTRIAL CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOIDE, ATSUSHI, MIYAGAWA, MAMORU, SUGANUMA, MASASHI, TAKIZAWA, KIYOTO, YAMAGIWA, YOSHITOSHI
Publication of US20040067153A1 publication Critical patent/US20040067153A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2061—Means for forcing the molten metal into the die using screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/28—Melting pots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
    • C22C49/14—Alloys containing metallic or non-metallic fibres or filaments characterised by the fibres or filaments
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt
    • C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • C22C2026/002—Carbon nanotubes

Definitions

  • the present invention relates to a method for producing a composite metal product comprising a carbon nano material and a metal material by injection molding.
  • a carbon nano material which is a kind of crystalline carbon materials, has such characteristics that its heat conductivity is five times or more as high as that of aluminum (Al), magnesium (Mg) and the like, it is excellent in electric conductivity, and it is also excellent in slidability because it has a low friction factor. Since the carbon nano material is very minute, however, it is said that the material is preferably used by being composited with other material.
  • a composite material is obtained by mixing the carbon nano material and metal powder, pressing and pulverizing said mixture so that the the particle size is from 5 ⁇ m to 1 nm, and a composite product is obtained by hot pressing said pulverized mixture.
  • the aboveconventional method has a problem in that metal products of electronic equipment such as heat sinks, shields and bearings, and the like are difficult to be molded by a hot press from a composite material containing the crystalline carbon material.
  • An object of the present invention which has been devised to solve the above problems of the prior art, is to provide a novel compositing and molding method for enabling a carbon nano material to be composited with a metal material by injection molding and applying the characteristics of the carbon nano material to a metal product without being limited by the size and shape of the metal product so that functions required to the parts of electronic equipment such as high heat conductivity, excellent electric conductivity, excellent slidability, and the like can be improved, and to provide a composite metal product.
  • a method for producing a composite metal product containing a carbon nano material and a metal material of the present invention for achieving the above object comprises the steps of; mixing a carbon nano material with a metal material in a powder state; compressing a resultant mixed material to a solid material by a hot press and forming said solid mixed material into granules such as chips, pelletes, and the like; melting the metal thereof and kneading the granules to form a composite material and injecting and the composite material into a mold to form the composite metal product; and obtaining a composite metal product containing the carbon nano material and the metal material.
  • the metal material is preferably a low melting point metal.
  • the above melting and kneading step and the injecting step may be performed by using an inline screw type injection machine or a screw type preplasticization injection machine. Further, the object of the present invention is achieved by a composite metal product obtained by any one of the above methods.
  • the carbon nano material and the metal material are formed to the granules which are used as a molding material, a material used in a compositing and molding process can be easily supplied. Further, since the metal material can be effectively melted and the carbon nano material and the metal material can be blended in a short time, a composite metal product having uniform quality can be obtained. Further, since molding the composite metal product is achieved by injection molding, the composite metal product has a high molded accuracy and the product is not limited in its shape and size different from a product formed by a press. Therefore, it is possible to easily produce a composite metal product having functions of high heat conductivity, excellent electric conductivity, low friction factor, and the like.
  • FIG. 1 is a process view of a method of producing a composite metal product cpmprising a carbon nano material and a low melting point metal according to the present invention.
  • FIG. 2 is a schematic sectional view of a screw type preplasticization injection machine for use in the method of the present invention.
  • powder of a carbon nano material 1 which is known as a carbon nano tube and the like, and powder of a low melting point metal material 2 , which is composed of at least one selected from the group consisting of metals, alloys of magnesium (Mg), tin (Sn), aluminum (Al), copper (Cu), lead (Pb), and zinc (Zn), are charged into a mixer 3 and stirred and mixed therein as shown in FIG. 1.
  • a conventional mixer for a powder may be used for the mixer 3 and an example of the metals used herein is a magnesium-base alloy of a low melting point metal. It is preferable that they be mixed in an inert gas astmosphere.
  • the mixed material 4 is transferred to a hot press 5 and heated and compressed so that it is molded to a sheet-shaped solid material 6 .
  • An example of the compession molding conditions is such that a carbon nano tube is added in an amount less than 30 vol % without an addition of a binder, a compression temperature is about 500° C. and a compression pressure is about 30 MPa.
  • the solid material 6 molded by the compression molding is processed to granules 7 such as pellets, chips, and the like by known means such as cutting, pulverizing, grinding or crushing, and the granules 7 are as a molding material supplied to an injection machine, which has an injection device 8 having heating means around the outer periphery thereof and a mold 9 for a product.
  • the injection machine 8 has an injection screw 83 with a check valve disposed in a heating cylinder 82 having a nozzle 81 at the head thereof, the injection screw 83 rotating and moving forward and rearward in the heating cylinder 82 . Further, a hopper 84 is mounted on a supply port formed on the heating cylinder 82 at a rear portion thereof. The granules 7 are supplied from the hopper 84 into the heating cylinder 82 , where the low melting point metal is melted, are blended by the rotation of the injection screw 83 and formed a composite material and this composite material is fed to the head of the screw 83 under pressure.
  • the composite material is weighed (stored) in the head portion of the heating cylinder 82 in a molten state of the metal when the screw is moved rearward by internal pressure, they are injected into and fill the mold 9 for a product as a molding material as the screw moves forward.
  • the inside space of the heating cylinder 82 be filled with an inert gas atmosphere to prevent oxidation.
  • the mold 9 is composed of a pair of open/close divided molds 93 attached to a stationary platen 91 and a movable platen 92 of a mold clamping unit (not shown) and has cavities 94 for forming two sets of products in the interior thereof and a sprue 95 which is located at the center of both the cavities 94 and against which a nozzle 81 is abutted.
  • the composite material injected from the nozzle 81 fills both the cavities 94 from the sprue 95 , thereby composite metal products 10 , in which the carbon nano material 1 is uniformly composited with the metal material 2 , are formed.
  • the above embodiment employs the inline screw type injection machine 8 and the metal material in the granules 7 is melted and blended with the carbon nano material by the injection screw 83 and thus obtained composite material is injected into and fill the mold 9 , the above operation can be effectively executed by employing a screw type preplasticization injection machine that is used to mold a resin.
  • a screw type preplasticization injection machine ordinarily constructed includes a melting/kneading device 14 and an injection device 17 disposed in parallel with each other, and a flow path 18 having an open/close valve 19 is disposed between the head of the melting/kneading device 14 and the injection device 17 so that the melting/kneading device 14 communicates with the injection device 17 through the flow path 18 .
  • the melting/kneading device 14 has a melting/kneading cylinder 11 having a melting/kneading screw 12 disposed therein and a hopper 13 disposed on the cylinder 11 at a rear portion thereof, and the injection device 17 has an injection cylinder 15 including an injection plunger 16 forward and rearward movably disposed therein.
  • the granules are melted, wherein the metal is melted, and blended by the melting/kneading device 14 , thereby a composite material is formed, then thus obtained composite material is fed to the front portion of the injection cylinder 15 under pressure and weighed therein. After the composite material is weighed, the open/close valve 19 of the flow path 18 is closed.
  • the injection device 17 the composite material is injected from a nozzle 20 into and fill the mold 9 as the injection cylinder 16 moves forward.
  • the metal of the granules 7 supplied thereto begin to be melted and blended while the injection and filling operation is executed in the injection device 17 .
  • the screw type preplasticization injection machine can more effectively mold the composite metal products 10 , in which the carbon nano material 1 is uniformly composited with the metal material 2 , than the inline screw type injection machine that executes both the melting/kneading operation and the injecting operation in the same machine.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Nanotechnology (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
US10/645,333 2002-08-22 2003-08-21 Method for producing composite metal product Abandoned US20040067153A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002242292A JP3837104B2 (ja) 2002-08-22 2002-08-22 カーボンナノ材と金属材料の複合成形方法及び複合金属製品
JP2002-242292 2002-08-22

Publications (1)

Publication Number Publication Date
US20040067153A1 true US20040067153A1 (en) 2004-04-08

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Family Applications (1)

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US10/645,333 Abandoned US20040067153A1 (en) 2002-08-22 2003-08-21 Method for producing composite metal product

Country Status (2)

Country Link
US (1) US20040067153A1 (ja)
JP (1) JP3837104B2 (ja)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050075443A1 (en) * 2003-07-23 2005-04-07 Nissin Kogyo Co., Ltd. Carbon fiber composite material and method of producing the same, formed product of carbon fiber composite and method of producing the same, carbon fiber-metal composite material and method of producing the same, and formed product of carbon fiber-metal composite and method of producing the same
US20070000577A1 (en) * 2005-04-22 2007-01-04 Ga-Lane Chen Creep resistant magnesium alloy
EP1970459A1 (de) * 2007-03-15 2008-09-17 Bayerische Motorenwerke Aktiengesellschaft Leichtmetallwerkstoff mit Kohlenstoffnanoröhren und dessen Anwendung
US20080274366A1 (en) * 2004-07-16 2008-11-06 Missin Kogyo Co, Ltd. Carbon fiber-metal composite material and method of producing the same
WO2008139943A1 (en) * 2007-04-27 2008-11-20 Nissei Plastic Industrial Co., Ltd. Method of manufacturing metal-carbon nanocomposite material
FR2935989A1 (fr) * 2008-09-16 2010-03-19 Arkema France Melange-maitre metallique renfermant des nanotubes.
US20100282429A1 (en) * 2006-11-17 2010-11-11 Nissei Plastic Industrial Co., Ltd. Method for producing carbon nanocomposite metal material and method for producing metal article molded therefrom
US20130207052A1 (en) * 2012-02-13 2013-08-15 Korea Kumho Petrochemical Co., Ltd. Method for preparing carbon nano material/polymer composites
EP3406329A4 (en) * 2016-01-20 2019-08-21 LG Chem, Ltd. DEVICE FOR PRODUCING CARBON NANOTUBLE PELLETS

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4005018B2 (ja) * 2003-12-19 2007-11-07 日信工業株式会社 炭素繊維複合材料及びその製造方法、炭素繊維複合成形品及びその製造方法
JP4325991B2 (ja) * 2003-12-19 2009-09-02 日信工業株式会社 炭素繊維複合材料及びその製造方法、炭素繊維複合金属材料の製造方法
JP2006147170A (ja) * 2004-11-16 2006-06-08 Sumitomo Electric Ind Ltd 導電材及びその製造方法
JP4526550B2 (ja) * 2006-05-12 2010-08-18 学校法人千葉工業大学 カーボンナノ材と金属材料との複合体の製造方法
JP4550782B2 (ja) * 2006-08-07 2010-09-22 日信工業株式会社 炭素繊維複合金属材料の製造方法、炭素繊維複合金属成形品の製造方法
JP4550783B2 (ja) * 2006-08-07 2010-09-22 日信工業株式会社 炭素繊維複合金属材料の製造方法、炭素繊維複合金属成形品の製造方法
MY160373A (en) * 2010-07-21 2017-03-15 Semiconductor Components Ind Llc Bonding structure and method

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US6860314B1 (en) * 2002-08-22 2005-03-01 Nissei Plastic Industrial Co. Ltd. Method for producing a composite metal product
US6874563B2 (en) * 2002-08-22 2005-04-05 Nissei Plastic Industrial Co., Ltd. Composite metal product of carbon nano material and low melting point metal and method of producing the same
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US5589152A (en) * 1984-12-06 1996-12-31 Hyperion Catalysis International, Inc. Carbon fibrils, method for producing same and adhesive compositions containing same
US5037102A (en) * 1987-08-24 1991-08-06 Mizuno Corporation Golf club head
US5134039A (en) * 1988-04-11 1992-07-28 Leach & Garner Company Metal articles having a plurality of ultrafine particles dispersed therein
US5865912A (en) * 1989-02-13 1999-02-02 Kabushiki Kaisha Kobe Seiko Sho SiC-reinforced aluminum alloy composite material
US5108964A (en) * 1989-02-15 1992-04-28 Technical Ceramics Laboratories, Inc. Shaped bodies containing short inorganic fibers or whiskers and methods of forming such bodies
US5070591A (en) * 1990-01-22 1991-12-10 Quick Nathaniel R Method for clad-coating refractory and transition metals and ceramic particles
US5338714A (en) * 1990-07-24 1994-08-16 Centre National De La Recherche Scientifique (C.N.R.S.) Composite alumina/metal powders, cermets made from said powders, and processes of production
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050075443A1 (en) * 2003-07-23 2005-04-07 Nissin Kogyo Co., Ltd. Carbon fiber composite material and method of producing the same, formed product of carbon fiber composite and method of producing the same, carbon fiber-metal composite material and method of producing the same, and formed product of carbon fiber-metal composite and method of producing the same
US8053506B2 (en) * 2003-07-23 2011-11-08 Nissin Kogyo Co., Ltd. Carbon fiber composite material and method of producing the same, formed product of carbon fiber composite and method of producing the same, carbon fiber-metal composite material and method of producing the same, and formed product of carbon fiber-metal composite and method of producing the same
US20080274366A1 (en) * 2004-07-16 2008-11-06 Missin Kogyo Co, Ltd. Carbon fiber-metal composite material and method of producing the same
US8377547B2 (en) 2004-07-16 2013-02-19 Nissin Kogyo Co., Ltd. Carbon fiber-metal composite material and method of producing the same
US20070000577A1 (en) * 2005-04-22 2007-01-04 Ga-Lane Chen Creep resistant magnesium alloy
US8171979B2 (en) * 2006-11-17 2012-05-08 Nissei Plastic Industrial Co., Ltd. Method for producing carbon nanocomposite metal material and method for producing metal article molded therefrom
US20100282429A1 (en) * 2006-11-17 2010-11-11 Nissei Plastic Industrial Co., Ltd. Method for producing carbon nanocomposite metal material and method for producing metal article molded therefrom
EP1970459A1 (de) * 2007-03-15 2008-09-17 Bayerische Motorenwerke Aktiengesellschaft Leichtmetallwerkstoff mit Kohlenstoffnanoröhren und dessen Anwendung
US8051892B2 (en) * 2007-04-27 2011-11-08 Nissei Plastic Industrial Co., Ltd. Method of manufacturing metal-carbon nanocomposite material
US20090288519A1 (en) * 2007-04-27 2009-11-26 Keita Arai Method of Manufacturing Metal-Carbon Nanocomposite Material
WO2008139943A1 (en) * 2007-04-27 2008-11-20 Nissei Plastic Industrial Co., Ltd. Method of manufacturing metal-carbon nanocomposite material
FR2935989A1 (fr) * 2008-09-16 2010-03-19 Arkema France Melange-maitre metallique renfermant des nanotubes.
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