WO2005084854A1 - 中空金属球構造体、中空金属球成形体および中空金属球構造体の製造方法 - Google Patents
中空金属球構造体、中空金属球成形体および中空金属球構造体の製造方法 Download PDFInfo
- Publication number
- WO2005084854A1 WO2005084854A1 PCT/JP2005/003855 JP2005003855W WO2005084854A1 WO 2005084854 A1 WO2005084854 A1 WO 2005084854A1 JP 2005003855 W JP2005003855 W JP 2005003855W WO 2005084854 A1 WO2005084854 A1 WO 2005084854A1
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- WO
- WIPO (PCT)
- Prior art keywords
- metal sphere
- outer shell
- hollow
- shell member
- spheres
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/005—Casting metal foams
Definitions
- Hollow metal sphere structure hollow metal sphere molded body, and method of manufacturing hollow metal sphere structure
- the present invention relates to a hollow metal sphere structure, a hollow metal sphere formed body, and a method for manufacturing a hollow metal sphere structure.
- Hollow metal spheres have a high impact energy absorption capacity, so if a structure or molded body using this hollow metal sphere is formed, a structural material with a high shock absorption capacity can be manufactured using this structure or molded body. it can.
- the present invention relates to a hollow metal sphere structure having hollow metal spheres, a hollow metal sphere molded body, and a method of manufacturing a hollow metal sphere structure.
- a plurality of hollow metal spheres are housed in a predetermined firing vessel and fired under pressure.
- a hollow metal sphere is mixed with a binder such as a resin or a stirrable liquid and shaped, followed by sintering to form a molded body in which a plurality of hollow metal spheres are sintered.
- a binder such as a resin or a stirrable liquid
- a binder such as a resin or a stirrable liquid
- a binder such as a resin or a stirrable liquid
- Patent Document 1 JP-A-06-240304
- Patent Document 2 JP-A-06-240369
- Patent document 3 German patent invention No. 10018501
- Patent document 4 German patent application No. 19929760
- Patent Document 5 U.S. Patent Application Publication No. 4917857
- Patent Document 6 US Patent Application Publication No. 4775598
- Patent Document 7 US Patent Application Publication No. 3528809
- the present invention provides a hollow metal sphere structure, a hollow metal sphere formed body, and a hollow metal sphere structure that are easy to manufacture and can form a structure having a complicated shape with a small force. It is an object of the present invention to provide a method for producing the same.
- a method for producing a hollow metal sphere structure of the first invention is a method for forming a structure having a plurality of hollow metal spheres, wherein a binder layer is formed on a surface of the plurality of metal spheres, and A plurality of metal spheres on which a binder layer is formed are housed inside a hollow outer shell member, and the binder layers of the plurality of metal spheres are bonded inside the outer shell member.
- the adhesive material forming the binder layer of the metal sphere is a material that melts when heated, and the adhesive material is bonded to a surface of the metal sphere. A material is adhered to form the binder layer, and the outer shell member containing the metal spheres is heated and then cooled.
- the binder material layer of the metal sphere is coated with the adhesive material on the surface of the metal sphere, and then the adhesive material is dried. It is characterized by forming.
- a method for manufacturing a hollow metal sphere structure according to a fourth invention is characterized in that, in the first, second or third invention, when the metal sphere is filled in the outer shell, vibration is applied to the outer shell. Sign.
- the hollow metal sphere structure of the fifth invention comprises an outer shell member having a hollow space inside, and a plurality of metal spheres filled inside the outer shell member, and the metal sphere is bonded to the surface thereof.
- a molded body formed into a shape that fills the hollow space of the outer shell member by bonding the binder layers of the plurality of metal spheres inside the outer shell member. Characterized by having a structure having:
- a hollow metal sphere structure according to a sixth invention is characterized in that, in the fifth invention, the molded body is molded into a shape that partially fills a hollow space of the outer shell member.
- a hollow metal sphere structure according to a seventh aspect of the present invention is the hollow metal sphere structure according to the fifth aspect, wherein the bonding material forming the binder layer is a material that melts when heated, and the binder layer of the metal sphere is a surface of the metal sphere. Characterized by being formed by adhering the adhesive material to the substrate.
- the hollow metal sphere structure of an eighth invention is characterized in that, in the seventh invention, the binder layer of the metal sphere is formed by drying the adhesive material applied to the surface of the metal sphere.
- a hollow metal sphere structure according to a ninth invention is characterized in that, in the fifth invention, the metal sphere and the outer shell member are formed of the same material.
- a hollow metal sphere structure according to a tenth invention is characterized in that, in the fifth invention, the plurality of metal spheres have metal spheres having different outer diameters.
- the hollow metal sphere compact of the eleventh invention is a compact formed by combining the plurality of metal spheres, wherein the compact is the hollow metal sphere structure manufacturing method according to claim 2 or 3.
- the outer shell member is removed from the hollow metal sphere structure thus formed.
- the strength and the shock absorbing capacity of the structure are increased. Can be.
- the metal spheres are joined together by applying force into the outer shell member, even if the outer shell member has a complicated shape, the metal sphere can be reliably filled into the inside thereof, and the molded body is formed into that shape. Can be formed.
- the adhesive material when the metal shell is housed and the outer shell member is heated, the adhesive material is melted.
- the volume of the adhesive material decreases slightly when it is melted and solidified.However, the rate of the decrease is much smaller than when the metal spheres are sintered, so the metal spheres were bonded. Later, a gap can be prevented from being formed inside the outer shell member.
- the metal sphere can be inserted into the outer shell member without a large resistance. Therefore, even if the outer shell member has a complicated shape, the metal sphere can be filled without gaps.
- the packing density of the metal spheres in the outer shell member can be increased, the decrease in volume at the time of joining can be further reduced, and the force of the structure can be increased. it can.
- the outer shell member has therein a molded body that fills the hollow space of the outer shell member in which the plurality of hollow metal spheres are joined!
- the shock absorbing capacity can be increased. Since the metal spheres are joined after the force is applied to the outer shell member, even if the outer shell member has a complicated shape, the metal spheres can be reliably filled inside and formed into that shape.
- the formed body can be disposed in the outer shell member.
- the molded body is formed so as to fill a part of the hollow space of the outer shell member, if the position at which the molded body is formed or the volume of the molded body is changed, the structural body is formed. Can be adjusted.
- the adhesive material when the outer shell member containing the metal spheres is heated, the adhesive material is melted, and the adhesive materials constituting the binder layer of the adjacent metal spheres are bonded. If the outer shell member is cooled from this state, the adhesive materials are solidified in a bonded state, so that adjacent metal balls can be bonded by the adhesive material.
- the adhesive force the volume of the adhesive material decreases slightly when it is melted and solidified.However, the rate of the decrease is much smaller than when the metal spheres are sintered, so the metal spheres were bonded. Later, it is possible to prevent a gap from being formed inside the outer shell member.
- the metal sphere is smoothly placed inside the outer shell member. Can be put in Therefore, even if the outer shell member has a complicated shape, the metal sphere can be filled without gaps.
- the ninth invention when the structure is discarded, there is no need to separate the metal sphere and the outer shell member, so that the structure can be easily discarded and can be recycled.
- the metal sphere has a small outer diameter! / ⁇
- the metal sphere and the large outer diameter! / ⁇ If the metal sphere is mixed and used, even if the outer shell member has a complicated shape, In addition, small metal spheres can be reliably filled in portions having a complicated shape, and metal spheres having a large outer diameter can be filled in portions having a relatively simple shape. Then, the weight of the hollow metal sphere structure can be reduced as compared with the case where the entire outer shell member having a complicated shape is filled with small V and metal spheres.
- adjacent metal spheres are bonded to each other by the adhesive material, and the volume of the adhesive material slightly decreases when the adhesive material is melted and solidified, but the reduction rate is smaller than when the metal spheres are sintered. Since the rate of decrease is very small, a molded body with high dimensional accuracy can be manufactured.
- the adhesive material is capable of bonding metal spheres only by being melted and solidified, and a molded body can be easily manufactured.
- FIG. 1A and 1B are schematic explanatory views of a hollow metal sphere structure 1 of the present embodiment
- FIG. 1C is a schematic sectional view of a hollow metal sphere 10.
- a hollow metal sphere structure 1 of the present embodiment has a hollow outer shell member 2 in which a molded body 3 in which a plurality of metal spheres 11 are bonded is arranged.
- the outer shell member 2 is, for example, a hollow pipe used for a frame or a bumper of an automobile, a beam or a pillar of a building, or the like, for example, a circular pipe, a hat material having a hat-shaped cross section, a square pipe, or the like. Although it is a structural material, it is not particularly limited as long as it has a hollow space inside.
- the molded body 3 is formed by bonding a plurality of metal spheres 11 with an adhesive material 13.
- the metal sphere 11 serving as the material of the molded body 3 is a hollow metal sphere, and is formed, for example, so as to have an outer diameter of 210 mm and a thickness of several hundreds of meters. If the outer shell member 2 is a structural material for automobiles, the outer diameter is preferably 5-7 mm. The outer diameter of the metal ball 11 is not limited to this size and is smaller than 2 mm. The thickness may be larger than 10 mm, may be larger than 10 mm, may be smaller than several tens / zm, or may be larger than several hundred m. The metal balls 11 do not all need to be of the same size, and may have a large outer diameter, a small and a large diameter, or a mixture of those.
- the adhesive material 13 is not particularly limited as long as it can bond the metal spheres 11 and maintain a sufficient bonding force under the conditions of use of the hollow metal sphere structure 1.
- the inside of the outer shell member 2 is filled with the molded body 3 formed by combining the plurality of hollow metal spheres 11. , Its strength and shock absorbing ability can be increased. By adjusting the combination of the thickness of the outer shell member 2 and the size of the plurality of metal spheres 11, it is possible to have the necessary strength and shock absorbing capacity and not to become too heavy. it can.
- the molded body 3 does not need to fill the entire hollow space of the outer shell member 2, but fills a part of the hollow space. What is necessary is just to be formed as follows. Then, in the hollow metal sphere structure 1, if the molded body 3 is arranged only in a place where a high strength and a high shock absorbing capacity are required, the necessary strength and the shock absorbing capacity are provided only in that place. And the weight of the hollow metal sphere structure 1 can be reduced.
- the molded body 3 is fixed to the hollow space of the outer shell member 2 by the adhesive material 13. However, if the molded body 3 can be fixed so as not to move in the outer shell member 2, it is particularly preferable. There is no limitation.
- the hollow metal sphere structure 1 can be easily disposed of and can be recycled.
- FIG. 2 (A) is a flowchart of a method of manufacturing the kafunko metal sphere 10
- FIG. 2 (B) is a flowchart of a method of manufacturing the hollow metal sphere structure 1.
- the hollow metal sphere structure 1 of the present embodiment may be formed by bonding the metal spheres 11 with the adhesive material 13 to form the molded body 3 and then arranging the molded body 3 in the outer shell member 2. Good, but if manufactured by the following method, hollow metal sphere structure of complicated shape Body 1 can be easily manufactured.
- the processed metal sphere 10 is formed by forming a binder layer 12 on the surface of a hollow metal sphere 11.
- the binder layer 12 is a layer made of the above-described adhesive material 13.
- the adhesive material 13 is a material that melts when heated and then solidifies when cooled, and is, for example, a polyolefin-based adhesive, a phenol-based adhesive, or a polyamide-based adhesive, but is not particularly limited.
- the adhesive material 13 is not limited to a material that melts when heated and then solidifies when cooled, for example, a thermosetting material such as an epoxy-based adhesive, a melamine-based adhesive, and a urea-based adhesive that melts and solidifies when heated.
- a thermosetting material such as an epoxy-based adhesive, a melamine-based adhesive, and a urea-based adhesive that melts and solidifies when heated.
- any material that can maintain a sufficient bonding force under the conditions of use of the hollow metal sphere structure 1 can be used even if it is a zinc or other plating agent that melts when heat of about several hundred degrees Celsius is applied. Especially limited! / ,.
- the binder layer 12 is formed by the liquid adhesive material 13
- the liquid adhesive material 13 is applied to the surface of the metal sphere 11,
- the layer of the adhesive material 13, that is, the binder layer 12 is formed.
- the method of applying the adhesive material 13 may be such that the adhesive material 13 may be applied directly to the surface of the metal sphere 11 with a brush or the like, or may be applied by spraying with a spray or the like. .
- the processed metal spheres 10 having the binder layer 12 can be manufactured.
- the method of forming the binder layer 12 is not limited to the above method, and there is no particular limitation as long as the bonding materials 13 of the binder layer 12 are in a state where they do not stick to each other.
- the binder material 12 may be formed by powdering the adhesive material 13 and attaching the powder to the surface of the metal sphere 11.
- the processed metal sphere 10 is put into the hollow outer shell member 2 and filled into the outer shell member 2.
- the processed metal sphere 10 moves so that the gap formed between the processed metal spheres 10 becomes smaller, and the outer shell member 2 is moved.
- the packing density of the processed metal spheres 10 in the inside can be increased, and the filling state can be made uniform.
- the outer shell member 2 is vibrated. May be added.
- the state is such that adjacent metal balls 11 are bridged by the adhesive material 13.
- the adhesive material 13 is a thermosetting material
- the outer shell member 2 is heated and cooled down to a temperature at which the adhesive material 13 solidifies after the adhesive material 13 is melted. Absent.
- the metal sphere 11 is joined after the processed metal sphere 10 is put into the outer shell member 2, and the molded body 3 is formed.
- the portion of the outer shell member 2 where the formed body 3 is arranged has a complicated shape as long as the processed metal sphere 10 can be filled therein.
- the molded body 3 can be arranged.
- the metal spheres 11 having a small outer diameter and the metal spheres 12 having a large outer diameter are mixed and used, even if the outer shell member 2 has a complicated shape, the small metal sphere is used for a portion having a complicated shape.
- the hollow metal sphere structure 1 can be made lighter than a case where the entire inside of the outer shell member 2 is filled with small metal spheres.
- the volume decreases slightly when the adhesive material 13 is melted and solidified to form the molded body 3. Since the reduction ratio is very small as compared with the case of sintering, it is possible to prevent a gap from being formed inside the outer shell member 2 after the adhesive material 13 is solidified.
- the processed metal spheres 10 are obtained by drying the adhesive material 13 of the binder layer 12 and the processed metal spheres 10 do not stick to each other, so that the outer shell member 2 can be smoothly filled. . Therefore, even if the outer shell member 2 has a complicated shape, the processed metal sphere 10 can be filled without gaps. Since the outer shell member 2 is also vibrated when the metal sphere 10 is filled, the metal balls 10 can be relatively moved within the outer shell member 2. Then, the packing density of the metal spheres 11 in the molded body 3 can be increased, so that the strength of the hollow metal sphere structure 1 can be increased.
- the molded body 3 can be formed inside the structural material.
- a hollow hat material is used for a vehicle leaflet, etc., but if a processed metal ball 10 is put into the hat material, the leaflet etc. will be heated in the painting process of the automobile.
- the processed metal sphere 10 can be used as the molded body 3.
- the heating and cooling step does not need to be provided in the manufacturing process of manufacturing the hollow metal sphere structure 1, and thus the number of manufacturing steps of the hollow metal sphere structure 1 can be reduced.
- a general structural material can be used as the hollow metal sphere structure 1 of the present embodiment only by charging the processed metal sphere 10 and heating and cooling. Even if it is a material for use, the hollow metal sphere structure 1 of the present embodiment can be easily obtained.
- a general structural material can be obtained simply by adding the processed metal ball 10 and heating and cooling. Can be used as the hollow metal sphere structure 1 of the present embodiment, so that the hollow metal sphere structure 1 of the present embodiment can be easily formed even with a structural material currently used.
- the outer shell member 2 It is also possible to remove the outer shell member 2 from the hollow metal sphere structure 1 as described above and use only the molded body 3 as it is as a structural material. Since the pressed compact 3 has the adjacent metal balls 13 bonded to each other by the adhesive material 13, the dimensional accuracy is high and the production is easy.
- the molded body 3 has a structure for supporting the tensile external force, since the metal ball 11 may be detached from the molded body 3 and damaged when an external tensile force for generating a tensile stress is applied inside. Although it cannot be used for the body, it can be used as a material for a structure that receives only compressive force.
- the structure formed by the method for manufacturing a hollow metal ball structure of the present invention includes hollow members such as circular pipes, hat materials, square pipes, automobile frames and bumpers, beams of buildings, It can be used for structural materials used for pillars and the like.
- FIG. 1 (A) and (B) are schematic illustrations of a hollow metal sphere structure 1 of the present embodiment, and (C) is a schematic cross-sectional view of a hollow metal sphere 10.
- FIG. 2 (A) is a flowchart of a method for manufacturing the kagami metal sphere 10
- FIG. 2 (B) is a flowchart of a method for manufacturing the hollow metal sphere structure 1.
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2006510763A JPWO2005084854A1 (ja) | 2004-03-09 | 2005-03-07 | 中空金属球構造体、中空金属球成形体および中空金属球構造体の製造方法 |
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JP2004066000 | 2004-03-09 | ||
JP2004-066000 | 2004-03-09 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007006946A1 (fr) * | 2005-07-07 | 2007-01-18 | Onera (Office National D'etudes Et De Recherches Aerospatiales) | Procede de frittage sans pression d'alliages metalliques ; application a la fabrication de spheres creuses |
JP2007198137A (ja) * | 2006-01-23 | 2007-08-09 | Toyota Motor Corp | 構造体 |
US7922456B2 (en) | 2005-12-20 | 2011-04-12 | Rolls-Royce, Plc | Lightweight components |
WO2013034320A1 (de) * | 2011-09-06 | 2013-03-14 | Federal-Mogul Sealing Systems Gmbh | Abschirmvorrichtung |
JP2014048190A (ja) * | 2012-08-31 | 2014-03-17 | Mitsubishi Heavy Ind Ltd | 緩衝装置及び緩衝装置の製造方法 |
Citations (1)
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JP2000168839A (ja) * | 1998-12-10 | 2000-06-20 | Japan Nuclear Cycle Development Inst States Of Projects | 輸送容器用の緩衝体 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5355611A (en) * | 1976-10-29 | 1978-05-20 | Nippon Jiriyoku Senkou Kk | Execution method of heat insulating material of building that use minute hollow spherical body |
US5167885A (en) * | 1992-01-07 | 1992-12-01 | W. R. Grace & Co.-Conn. | Method for making sintered bodies |
JPH06240304A (ja) * | 1993-02-12 | 1994-08-30 | Soken Kagaku Kk | 金属微粉末集合賦形体、多孔質金属焼結体およびこの製造方法 |
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2005
- 2005-03-07 WO PCT/JP2005/003855 patent/WO2005084854A1/ja active Application Filing
- 2005-03-07 JP JP2006510763A patent/JPWO2005084854A1/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000168839A (ja) * | 1998-12-10 | 2000-06-20 | Japan Nuclear Cycle Development Inst States Of Projects | 輸送容器用の緩衝体 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007006946A1 (fr) * | 2005-07-07 | 2007-01-18 | Onera (Office National D'etudes Et De Recherches Aerospatiales) | Procede de frittage sans pression d'alliages metalliques ; application a la fabrication de spheres creuses |
US7922456B2 (en) | 2005-12-20 | 2011-04-12 | Rolls-Royce, Plc | Lightweight components |
JP2007198137A (ja) * | 2006-01-23 | 2007-08-09 | Toyota Motor Corp | 構造体 |
JP4655277B2 (ja) * | 2006-01-23 | 2011-03-23 | トヨタ自動車株式会社 | 構造体 |
WO2013034320A1 (de) * | 2011-09-06 | 2013-03-14 | Federal-Mogul Sealing Systems Gmbh | Abschirmvorrichtung |
JP2014048190A (ja) * | 2012-08-31 | 2014-03-17 | Mitsubishi Heavy Ind Ltd | 緩衝装置及び緩衝装置の製造方法 |
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JPWO2005084854A1 (ja) | 2008-01-17 |
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