WO2014002127A1 - 長尺軽金属ビレット及びその製造方法 - Google Patents
長尺軽金属ビレット及びその製造方法 Download PDFInfo
- Publication number
- WO2014002127A1 WO2014002127A1 PCT/JP2012/004095 JP2012004095W WO2014002127A1 WO 2014002127 A1 WO2014002127 A1 WO 2014002127A1 JP 2012004095 W JP2012004095 W JP 2012004095W WO 2014002127 A1 WO2014002127 A1 WO 2014002127A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light metal
- long
- billet
- short light
- billets
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
- B23K20/028—Butt welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
Definitions
- the present invention relates to a long light metal billet used for extrusion and the like and a method for producing the same.
- the upper punch is brought into contact with the powder filled in the die and the powder is compressed from below by raising the lower punch relative to the die while restraining the powder by the upper punch. Then, it is known to form a long green compact by lowering the upper punch and further compacting the powder.
- Patent Document 3 the first alloy billet, the alloy powder, and the second alloy billet are stacked in order from the bottom in the mold, and the alloy powder particles are bitten into the first alloy billet and the second alloy billet.
- Patent Document 2 only long green compacts of 30 mm to 80 mm are targeted, and long green compacts longer than that are not considered.
- Patent Document 3 has a problem that the work of appropriately laminating the alloy powder between the first alloy billet and the second alloy billet is troublesome.
- the present invention has been made in view of such a point, and an object of the present invention is to produce a long light metal billet of good quality by a simple method without using light metal powder.
- a plurality of short light metal billets manufactured from light metal powder are pressure-molded in a long container having a larger inner diameter.
- the inner diameter of the long container is D
- the outer diameter of the short light metal billet is d
- the surface pressure is P (MPa)
- the compression rate ⁇ is (Dd) / D ⁇ 100 ( %) e ( ⁇ -15) ⁇ (P / 98.06) 3 ⁇ e ((T-273) / 20) > 50 It is set as the structure which satisfy
- a plurality of short light metal billets obtained by pressure-forming light metal powder are laminated in a long container having an inner diameter larger than the outer diameter of the short light metal billet, and pressurized at a temperature higher than room temperature in the long container to By compressing until it becomes equal to the inner diameter of the long container, the interface between the short light metal billets is joined by friction.
- a plurality of short light metal billets are pressurized at a temperature higher than room temperature in a long container and compressed to be equal to the inner diameter of the long container, thereby reducing the short light metal billets
- FIG. 2 is a view corresponding to FIG. 1 when the compression process is completed. It is a perspective view which shows the elongate light metal billet after a compression process. It is a photograph which shows a short light metal billet. It is a photograph which shows a long light metal billet. It is a graph which shows a test result when a compression rate is 2%. It is a graph which shows a test result when a compression rate is 7%. It is a graph which shows a test result when a compression rate is 12%. It is a graph which shows a test result when a compression rate is 27%.
- FIG. 1 to 3 are cross-sectional views showing a method for manufacturing a long light metal billet 5 according to an embodiment of the present invention.
- a plurality of light metal powders made of, for example, a plate-like magnesium alloy piece having a length of several millimeters is placed in a short billet and compressed by, for example, compression at room temperature.
- a short light metal billet 1 is prepared.
- the surface pressure at this time may be so low that the light metal powder is not completely compressed and has an appropriate cavity inside.
- the height H of the short light metal billet 1 is compressed at a constant surface pressure, and thus varies depending on the diameter d and the amount of powder used.
- H / d is about 0.5 with respect to the outer diameter d of the short light metal billet 5.
- the short light metal billet 1 is preheated to an appropriate temperature. This preheating step is not always necessary.
- a plurality of short light metal billets 1 are stacked in a long container 2 having an inner diameter D larger than the outer diameter d of the short light metal billet 1.
- the number of short light metal billets 1 is not limited as long as it is two or more.
- the long container 2 has heating means such as a heater (not shown) and can hold an appropriate temperature T (K).
- An oxide film is formed on each boundary surface 4 between the short light metal billets 1 before pressurization, and can be clearly seen visually.
- a plurality of short light metal billets 1 are pressurized from the uppermost surface by the piston 3 at a temperature T higher than normal temperature in the long container 2 and compressed until a predetermined surface pressure is reached.
- the inner diameter of the long container 2 (the outer diameter of the long light metal billet 5) is D
- the outer diameter of the short light metal billet 1 is d
- the surface pressure is P (MPa)
- the compression ratio ⁇ are When (Dd) / D ⁇ 100 (%), it is desirable to satisfy the following formula (1).
- the boundary surfaces 4 of the short light metal billets 1 are joined by friction, and the boundary surfaces 4 are joined to such an extent that they cannot be visually observed.
- a shackle metal billet 5 is obtained.
- the test was based on whether or not the long light metal billet 5 was dropped during handling when the long light metal billet 5 was carried in and out.
- a test specimen of the long light metal billet 5 was prepared and tested by changing the rolling reduction ⁇ (%), the temperature T (K), and the surface pressure P (MPa).
- FIGS. A circle indicates that it was not cracked at 40 cm, indicating that it can withstand a drop during handling.
- X mark shows that it cannot endure the fall at the time of handling because it breaks by the fall of 40 cm.
- the plurality of short light metal billets 1 are pressurized in the long container 2 at a temperature higher than room temperature, and equal to the inner diameter D of the long container 2.
- the long light billet 5 having a good quality can be manufactured by a simple method without using light metal powder. .
- the present invention may be configured as follows with respect to the above embodiment.
- the short light metal billet 1 was shape
- the present invention is useful for light metal long light metal billets such as magnesium alloys used for extrusion and the like, and a method for producing the same.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
軽金属粉末を加圧成形した複数の短尺軽金属ビレットを用意する準備工程と、
上記複数の短尺軽金属ビレットを該短尺軽金属ビレットの外径よりも大きな内径を有する長尺コンテナ内に積層する積層工程と、
上記複数の短尺軽金属ビレットを長尺コンテナ内で常温よりも高い温度で加圧し、該長尺コンテナの内径と等しくなるまで圧縮する工程で、該短尺軽金属ビレット同士の境界面を摩擦により接合する圧縮工程とを含む。
上記圧縮工程において、長尺コンテナの内径をD、短尺軽金属ビレットの外径をd、面圧をP(MPa)、温度T(K)、圧縮率δを(D-d)/D×100(%)とすると、
e(δ-15)×(P/98.06)3×e((T-273)/20)>50
を満たす構成とする。
軽金属粉末を加圧成形した複数の短尺軽金属ビレットを該短尺軽金属ビレットの外径よりも大きな内径を有する長尺コンテナ内に積層し、該長尺コンテナ内で常温よりも高い温度で加圧して該長尺コンテナの内径と等しくなるまで圧縮することにより、短尺軽金属ビレット同士の境界面が摩擦により接合されている。
次に、上記製造方法によって製造した長尺軽金属ビレット5の破壊試験を行った。
本発明は、上記実施形態について、以下のような構成としてもよい。
2 長尺コンテナ
3 ピストン
4 境界面
5 長尺軽金属ビレット
Claims (3)
- 軽金属粉末を加圧成形した複数の短尺軽金属ビレットを用意する準備工程と、
上記複数の短尺軽金属ビレットを該短尺軽金属ビレットの外径よりも大きな内径を有する長尺コンテナ内に積層する積層工程と、
上記複数の短尺軽金属ビレットを長尺コンテナ内で常温よりも高い温度で加圧し、該長尺コンテナの内径と等しくなるまで圧縮する工程で、該短尺軽金属ビレット同士の境界面を摩擦により接合する圧縮工程とを含む
ことを特徴とする長尺軽金属ビレットの製造方法。 - 請求項1に記載の長尺軽金属ビレットの製造方法において、
上記圧縮工程において、長尺コンテナの内径をD、短尺軽金属ビレットの外径をd、面圧をP(MPa)、温度T(K)、圧縮率δを(D-d)/D×100(%)とすると、
e(δ-15)×(P/98.06)3×e((T-273)/20)>50
を満たす
ことを特徴とする長尺軽金属ビレットの製造方法。 - 軽金属粉末を加圧成形した複数の短尺軽金属ビレットを該短尺軽金属ビレットの外径よりも大きな内径を有する長尺コンテナ内に積層し、該長尺コンテナ内で常温よりも高い温度で加圧して該長尺コンテナの内径と等しくなるまで圧縮することにより、短尺軽金属ビレット同士の境界面が摩擦により接合されている
ことを特徴とする長尺軽金属ビレット。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/812,672 US9044823B2 (en) | 2012-06-25 | 2012-06-25 | Long light metal billet and method for manufacturing the same |
CN201280072775.9A CN104271290B (zh) | 2012-06-25 | 2012-06-25 | 长形轻金属坯料的制造方法 |
JP2012548272A JP5462957B1 (ja) | 2012-06-25 | 2012-06-25 | 長尺軽金属ビレット及びその製造方法 |
PCT/JP2012/004095 WO2014002127A1 (ja) | 2012-06-25 | 2012-06-25 | 長尺軽金属ビレット及びその製造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2012/004095 WO2014002127A1 (ja) | 2012-06-25 | 2012-06-25 | 長尺軽金属ビレット及びその製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014002127A1 true WO2014002127A1 (ja) | 2014-01-03 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2012/004095 WO2014002127A1 (ja) | 2012-06-25 | 2012-06-25 | 長尺軽金属ビレット及びその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9044823B2 (ja) |
JP (1) | JP5462957B1 (ja) |
CN (1) | CN104271290B (ja) |
WO (1) | WO2014002127A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105033260B (zh) * | 2015-08-28 | 2016-09-07 | 西北有色金属研究院 | 一种超细长薄壁无缝金属管的一体成型方法 |
CN107175858B (zh) * | 2017-05-15 | 2020-01-10 | Oppo广东移动通信有限公司 | 复合金属板材、用于电子设备的壳体以及电子设备 |
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JP2010024545A (ja) * | 2008-06-20 | 2010-02-04 | Kurimoto Ltd | 長尺合金ビレットの製造方法 |
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-
2012
- 2012-06-25 US US13/812,672 patent/US9044823B2/en not_active Expired - Fee Related
- 2012-06-25 WO PCT/JP2012/004095 patent/WO2014002127A1/ja active Application Filing
- 2012-06-25 CN CN201280072775.9A patent/CN104271290B/zh not_active Expired - Fee Related
- 2012-06-25 JP JP2012548272A patent/JP5462957B1/ja active Active
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JPS6345307A (ja) * | 1986-08-11 | 1988-02-26 | ワ−ル−テツク リミテツド | 金属粉末からビレツトを製造する方法 |
JPH03215604A (ja) * | 1990-01-17 | 1991-09-20 | Sanyo Special Steel Co Ltd | 粉末を原料とする棒管材の製造方法 |
JPH10296498A (ja) * | 1997-04-22 | 1998-11-10 | Toshiba Mach Co Ltd | 粉末成形体の製造方法 |
JP2010024545A (ja) * | 2008-06-20 | 2010-02-04 | Kurimoto Ltd | 長尺合金ビレットの製造方法 |
Also Published As
Publication number | Publication date |
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JP5462957B1 (ja) | 2014-04-02 |
JPWO2014002127A1 (ja) | 2016-05-26 |
CN104271290A (zh) | 2015-01-07 |
US9044823B2 (en) | 2015-06-02 |
CN104271290B (zh) | 2015-12-09 |
US20140234017A1 (en) | 2014-08-21 |
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