CN1795063A - Method of extruding hollow light metal member, die for extruding hollow light metal, and memeber for extruding hollow light metal - Google Patents
Method of extruding hollow light metal member, die for extruding hollow light metal, and memeber for extruding hollow light metal Download PDFInfo
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- CN1795063A CN1795063A CNA2004800140459A CN200480014045A CN1795063A CN 1795063 A CN1795063 A CN 1795063A CN A2004800140459 A CNA2004800140459 A CN A2004800140459A CN 200480014045 A CN200480014045 A CN 200480014045A CN 1795063 A CN1795063 A CN 1795063A
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- light metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Glass Compositions (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Provided is a method of extruding a hollow light metal member capable of always stably manufacturing the hollow light metal member (product) with excellent mechanical properties by using a hollow die such as a bridge die and efficiently improving the quality of the product matching the requested level of strength at low cost, comprising the steps of dividing, converging, and welding a light metal raw material with the hollow extruding die and extruding the material through a die hole to form in a specified cross sectional shape. A deformed amount provided to the light metal raw material after the converging and welding is maintained at 1.8 or higher before the extrusion.
Description
Technical field
The present invention relates to a kind of technology of the hollow member (goods) that forms by light metals such as aluminium by the extrusion process manufacturing, particularly relate to a kind of extrusion process technology that from solid light metal raw material, obtains having the hollow member of various cross sectional shapes.
Background technology
In the past, as the method for the hollow member of utilizing the hot extrusion processing and manufacturing to be formed by the light metal that with the aluminium alloy is representative, method as shown in Figure 5 was by known.This method will be as billet and the light metal raw material 1 of moulding import in the container 2 of pressurizing unit with heated condition, and exert pressure from the rear (direction of the arrow A from figure) of described light metal raw material 1 by push rod 3, and by being arranged on the hollow dual module 4 in the die holder 9 that links to each other with described container 2, from (direction the figure shown in the arrow B) extruding forwards of nib with given cross sectional shape, thereby obtain hollow member 5 (being rectangular tube in this example) as goods.
In the method,, used bridge die, porous to draw hollow dies such as molding, special-shaped casement as described hollow dual module 4.Fig. 6 shows as the porous of the example of described hollow die and draws molding.
This hollow dual module 4 has the formpiston 4a that is positioned at the billet side and is positioned at the former 4b of hollow member 5 sides, and the state that two mould 4a, 4b are one with chimeric uses.
Described formpiston 4a has and passes a plurality of entry portals 6 (though be 4 types in the drawings, economize and slightly illustrate 1) that are located at its circumferential part, and positive bearing 7a (bearing portion) is outstanding to the downstream of the direction of extrusion (former 4b side) from its central portion.In described former 4b, depression be provided with corresponding to each entry portal 6 of described formpiston 4a roughly be criss-cross deposited chamber 8, the middle position in this deposited chamber 8 is provided with the cloudy bearing 7b in the hole that connects former 4b vertically.This cloudy bearing 7b forms the gap of the given shape (rectangular-shaped for thin-walled among the figure) that the positive bearing 7a of described formpiston 4a can embed, and can extrusion molding has hollow member 5 with the corresponding cross section of shape in described gap with this state.
The principle of the extrusion process of using this hollow dual module 4 is described simply according to Fig. 6.At first,, be squeezed into four entry portals 6 of former 4b, be diverted to each entry portal 6 from the light metal raw material 1 that the direction of arrow A is extruded.That is, described light metal raw material 1 are divided into four part 1a, 1b, 1c, 1d.Each splitter section 1a～1d, by interflow in the deposited chamber 8 of ensuing former 4b, described entry portal 6 backs, at this by deposited and become one once more mutually.In addition, incorporate light metal raw material 1, keep the gap between the inner peripheral surface of embedded with gap cloudy bearing 7b with rectangular-shaped cross section from the outer peripheral face of positive bearing 7a with square-section and this positive bearing 7a, be squeezed out in the direction of arrow B, form the hollow member (rectangular tube) 5 that has with the corresponding rectangular hollow of the shape in described gap cross section thus.Therefore, the hollow member 5 of formed thereby has melt-coating part 5a in the part of its four crest lines.
Promptly, method and the hollow member 5 of the goods that obtain thus, owing to the process through " shunting " and " collaborating deposited " that do not have is squeezed out, so must there be quantity and the corresponding melt-coating part 5a in position with the entry portal 6 of described hollow dual module 4 in the empty hereinto member 5 in the method for normally used whole mould.Therefore, the metallurgical sealing of this melt-coating part and exposed portion (non-melt-coating part) can be arranged the tensile strength of hollow member, yield point, the so-called mechanical property that extends largely, is intensity by it.If the sealing deficiency of this melt-coating part, when the use of thereafter secondary operations or goods, can cause crackle and distortion, just can not guarantee its quality fully.
In addition, even in hollow mould, particularly use in the extrusion process of bridge die, though the life-span with its stamping die, also have the comparatively difficult shortcoming of operation of guaranteeing melt-coating part intensity on the contrary than the long advantage of other hollow moulds.For example under the situation of aluminium alloy, though as JIS3000 system and JIS6000 is not need a part of member of higher intensity problem not existing, but wait in JIS7000 system to require under the situation of high-intensity goods, be difficult to guarantee intensity fully in the melt-coating part that keeps its metallurgy characteristic.In addition, as for JIS5000 system, be impossible in the art owing to use the extruding of hollow stamping die, therefore, its exploitation also just is in the state of being abandoned.
In addition, with also having that present situation accompanies, the proper method that melt-coating part is estimated in advance not, what carried out in the reality is to begin to confirm by the inspection after the manufacturing of enlarge test and so on, the goods of undercapacity also happen occasionally for this reason, have the low problem of goods yield rate.Under the situation of finding this undercapacity, only tackle with the tentative wrong mold shape of Heuristics or change and extruding condition, in countermeasure, lack repeatability and versatility, can not be fully and promptly corresponding inexperienced new product shape and require characteristic, and it is futile that the manufacturing of mould becomes, and it is inefficient terrifically to have to say so.
The present invention is in view of present situation so, its purpose is for realizing and establish a kind of novel extrusion process technology, it can eliminate the basic problem of the intensity of the described melt-coating part in the extrusion process of the hollow mould that uses bridge die etc. at one stroke, and stably make have the hollow light metal member (goods) of excellent mechanical properties in, can low-cost high-efficiency ground make the goods that mate with desired strength level etc.
Summary of the invention
For reaching described purpose, the present invention adopts following structure.
Be that the present invention utilizes the method for hollow extrusion pressing mold to the extrusion process of light metal raw material, wherein, comprise described light metal raw material were once being shunted interflow, back and mutual deposited operation, and the light metal raw material extrusion process of the nib by described hollow extrusion pressing mold after with this interflow is the operation of desirable cross sectional shape, in the operation of this extrusion process, maintain more than 1.8 and carry out this extrusion process putting on the raw-material dependent variable of light metal of described interflow after deposited.
In addition, so-called " dependent variable " expression here arrives the meaning of the mean value of the suitable stress distribution amount that is produced between the mould export department goods cross section the light metal raw material from cross section, deposited chamber.
By this dependent variable is maintained more than 1.8, the tensile strength of the melt-coating part in the goods can be brought up to the roughly intensity of the tensile strength of approaching exposed portion.
The method goes for all light metal raw material, but is that the situation of aluminium alloy is effective especially for stating the metal that constitutes described hollow light metal member.
Also has the present invention, be to utilize the hollow extrusion pressing mold with light metal raw material shuntings and to collaborate deposited back extrusion process be the extruding method of the hollow light metal member of desirable cross sectional shape, wherein, obtain and put on the light metal raw-material dependent variable of described interflow after deposited and the dependency relation of the cladding intensity of the melt-coating part of the goods after the extrusion process, based on this dependency relation with the corresponding dependent variable of the desired value of described cladding intensity be that the target dependent variable is set, maintain and carry out the raw-material extrusion process of this light metal more than the described target dependent variable putting on the raw-material dependent variable of light metal of described interflow after deposited.
In addition, the present invention the light metal raw material are shunted and collaborate deposited after, be used for the hollow extrusion pressing mold of extrusion process that extrusion process is the hollow light metal member of desirable cross sectional shape, be set as and maintain more than 1.8 and push putting on the raw-material dependent variable of light metal of described interflow after deposited.
As this hollow extrusion pressing mold, bridge die, hollow mould, or special-shaped casement is comparatively suitable.
In addition, the present invention is by being the hollow light metal member that desirable cross sectional shape obtains with the light metal raw material having carried out shunting and having collaborated the extrusion process of deposited back, be to maintain and push the hollow light metal member that obtains more than 1.8 by putting on the raw-material dependent variable of light metal of described interflow after deposited, the intensity of its melt-coating part is more than 90% of intensity of exposed portion.
Description of drawings
Fig. 1 (a) is the stereogram of example that expression is used for the hollow mould of hollow extrusion molding; (b) be the cross sectional elevation of same extrusion die.
Fig. 2 is the sectional top view of the area of section of the moulding material at each position of expression in described hollow mould situation about changing.
Fig. 3 (a) and (b) are the partial cross section front views that are used to illustrate the size of various hollow moulds.
Fig. 4 is based on the extrusion process experimental result of using hollow mould and the curve of representing the relation of dependent variable and cladding intensity.
Fig. 5 is the cross-sectional illustration figure of the summary of expression hollow extrusion pressure device.
Fig. 6 represents to be used for the cross-sectional perspective view of an example of the hollow mould of described hollow extrusion pressure device.
The specific embodiment
Below, explain the present invention its principle effect and preferred implementation.
Present inventors are in order to solve described problem, be conceived to influence the factor of melt-coating part intensity and the research that constantly experimentizes, finally draw, what arrange it quantitatively is not that what usually thought is products temperature, but the suffered dependent variable of light metal raw material in the privileged site in hollow mould.In addition, the result who studies can distinguish by experiment, if this dependent variable be certain more than certain limiting value, then can be approaching intensity of exposing portion with the improved strength of melt-coating part.Therefore, distinguished based on fact so, the shape of dependent variable and hollow mould, the relation between the structure are carried out quantification, and by this result is reflected in the Mould design, thereby not only can obtain the hollow member of cladding intensity height, excellent quality, can also freely make the hollow member that combines the various requirement strength level.
Clear and definite after the influence to cladding intensity of this dependent variable, present inventors have at first inferred the distortion suffered in the process that the pressurized raw-material billet that is provided in the container is squeezed out as goods by hollow mould and the variation of its sectional area.
Fig. 1 (a) and (b) are figure of the example of expression bridge die 4.Fig. 2 (a)～(d) is that the existence zone of the metal (moulding material of formation billet) at each position of the described mould of model utility ground expression is the figure of cross sectional shape.In addition, for easy outer wall and other members that omitted the periphery that constitutes mould 4 among these figure.
Described mould 4 has chimeric formpiston 4a and former 4b mutually.Formpiston 4a has the criss-cross bridge-type main body 41 and the outstanding 42b of foot in four ends of bridge-type main body 41 from then on integratedly downwards, and positive bearing 7a is outstanding downwards from the central portion of described bridge-type main body 41.Former 4b has the recess 43 that each foot 42 of described in the above formpiston 4a is embedded into, and is provided with the cloudy bearing 7b in the hole that connects this former 4a vertically at the bottom surface of recess 43 middle position.The relativeness of two bearing 7a, 7b and described Fig. 5 and shown in Figure 6 identical.
In this mould 4, identical with described device shown in Figure 5, light metal raw material 1 as the moulding of billet institute enter in the container from the arrow A direction, to finally becoming between goods are squeezed out along the B direction, the cross sectional shape of these light metal raw material 1 changes significantly, and Fig. 2 is conceived to the sector region S of 45 ° at the angle of circumference shown in Fig. 1 (a) and the figure that represents the passing of its cross sectional shape.
Specifically, Fig. 2 (a) and (b), (c), (d) 1.-1. line shown in the presentation graphs 1 (b), 2.-2. line, 3.-3. line, 4.-4. cross sectional shape of the light metal raw material 1 of the height and position of line respectively.In addition, in light metal raw material 1, be created on the mobile part of the center side in the described mould 4 and in the remaining immobilising delay part in its outside, but in Fig. 2 (a) and (b), (c), (d), the mobile part 1a of light metal raw material 1 is as the fine mesh part, non-current part 1b is as the coarse mesh part, and is illustrated respectively.
At first, in the 1. described-1. position of line, promptly than mould 4 position in the container of upstream side more, the mobile part 1a of light metal raw material 1 has occupied whole cross section, the position that promptly exists as bridge-type main body 41 in the position of 2.-2. line and than foot 42 position of upstream side more, light metal raw material 1 are diverted to four places owing to the existence of this bridge-type main body 41 shown in Fig. 2 (b), its area that separates disconnection is equivalent to the aperture area of 41 of bridge-type main bodys and reduces.
Thereafter, splitter section arrives 3.-3. position of line that foot 42 exists through bridge-type main body 41, and be formed at described bridge-type main body 41 below and in the deposited chamber 8 of the position of the inboard of each foot 42 interflow once more, deposited mutually.Therefore, the cross sectional shape of the metal here (moulding material) becomes shown in Fig. 2 (c).
So in 4.-4. position of line that two bearing 7a, 7b exist, shown in Fig. 2 (d), the cross section metal area is restricted to the area that is formed at the gap between two bearing 7a, the 7b, reduces significantly from the area of section shown in Fig. 2 (c).
Present inventors, thereby the result who studies the passing of described cross sectional shape learns, in described each position, to the position after being shaped as shown in the figure (d), the dependent variable of granting metal produces very big influence to cladding intensity from the position of the deposited chamber 8 behind the interflow shown in Fig. 2 (c).In addition, said here dependent variable, as mentioned above, the mean value of the suitable stress distribution amount of expression from cross section, deposited chamber to mould export department goods cross section.
According to the above fact, this dependent variable largely is subjected to the flow influence of area of section (Atp) of the area of section (Ae) of part 1a and goods of the raw material of deposited chamber 8, and according to deposited chamber height dimension H shown in Fig. 3 (a) and (b)
MWith mould thickness H
DChange.In addition; size when Fig. 3 (a) expression has the bridge die of bridge-type main body 41 or special-shaped casement; size when the porous that has an entry portal 6 with figure (b) expression is drawn molding; in these figure; there is X to represent to inject the position of actinal surface respectively; Y represents the position of (above the portion of interflow) above the deposited chamber, and Z represents the position of mould opening surface.
Present inventors draw, if the relation of this mould design factor and described dependent variable is carried out quantification, then can carry out the mould design based on this, thereby can solve the problem of cladding intensity at all.Though do not relate to concrete quantification (fixed patternization, the function to indicate) method between its design factor and the dependent variable here, but then can utilize known numerical analysis method such as finite element method (FEM) or calculus of finite differences to calculate dependent variable if determined mold shape, therefore can obtain the dependency relation between this mould design factor and the dependent variable with comparalive ease.
Present inventors have carried out research discussion to relation of cladding intensity and dependent variable and the domination factor thereof so, and confirm whether it can be suitable for effectively in the technology of reality, and be etc. that aluminium alloy serves as for the examination material with 7000, use has various difform hollow moulds and carries out the extrusion process experiment, obtain the dependent variable of this moment, thereby measure the tensile strength of hollow member.Following its experiment condition of table 1 expression, its experimental result of table 2 expression.
Table 1
| Numbering | For examination material (aluminium alloy kind) | The kind of mould | The thickness H of mould D(mm) | Deposited chamber height H M(mm) | Goods area of section Atp (mm 2) | EP area A m (mm 2) |
| 1 | JIS7N01 | The bridge-type pass | 145 | 35 | 1053 | 18188 |
| 2 | JIS7N01 | Inject type | 160 | 30 | 4005 | 27760 |
| 3 | JIS7075 | Porous type | 185 | 35 | 4475 | 37468 |
| 4 | JIS7003 | Section groove | 50 | 10 | 1906 | 15768 |
| 5 | JIS7N01 | The bridge-type pass | 30 | 20 | 255 | 9488 |
| 6 | JIS7003 | Section groove | 30 | 8 | 255 | 9488 |
| 7 | JIS7N01 | Porous type | 30 | 20 | 255 | 5251 |
| 8 | JIS7075 | The bridge-type pass | 30 | 8 | 255 | 5251 |
| 9 | JIS7N01 | The bridge- | 100 | 25 | 1562 | 33970 |
| 10 | JIS7075 | | 100 | 20 | 1102 | 29517 |
| 11 | JIS7N01 | The bridge-type pass | 60 | 10 | 725 | 10378 |
Table 2
| Numbering | Dependent variable | The tensile strength of the tensile strength of melt-coating part/exposed |
| 1 | 1.59 | × |
| 2 | 0.75 | × |
| 3 | 0.87 | × |
| 4 | 0.90 | × |
| 5 | 3.22 | ○ |
| 6 | 2.37 | ○ |
| 7 | 2.64 | ○ |
| 8 | 1.83 | ○ |
| 9 | 2.41 | ○ |
| 10 | 3.15 | ○ |
| 11 | 1.78 | × |
From the result of the test of table 2 as can be known, dependent variable is the material more than 1.8, and with low the comparing for the examination material of dependent variable, any tensile strength ratio is more than 90%, and the intensity of melt-coating part and the intensity of exposed portion are less than big difference too.Therefore, be made as 1.8 by the limiting value with dependent variable, identical dependent variable maintains more than this value carries out extrusion process, thereby can stably make the intensity height of melt-coating part, excellent hollow member.
In addition, Fig. 4 is the result who adds the supplementary test that carries out in addition on these results, and the N number is increased, thereby relation between dependent variable and the cladding intensity has similarly been carried out the curve of arrangement.Have respectively in the drawings, the tensile strength ratio that is positioned at melt-coating part and exposed portion is 100% place, and the solid line parallel with X-axis represent the tensile strength of exposed portion's (non-melt-coating part), and imaginary curve is represented the tensile strength of melt-coating part.
From then on figure is clear and definite positive correlation between dependent variable and the cladding intensity as can be known, and dependent variable is that 1.8 strength ratios when above are more than 90%, also can obtain the intensity of excellence in melt-coating part.And as can be known, particularly if dependent variable in the scope more than 2.4, then can access the melt-coating part that strength ratio is the very high strength more than 95%, thereby a kind of more good hollow member of quality that is inferior to naked material intensity hardly is provided.Promptly, according to these result of the tests, in order to obtain described tensile strength than being hollow metal member more than 90%, then described dependent variable must be maintained more than 1.8 and carry out extrusion process, particularly carry out extrusion process, then can obtain the more excellent hollow light metal member of strength characteristics if described dependent variable is maintained more than 2.4.
So, obtain the dependency relation of dependent variable and cladding intensity, and determine dependent variable based on this relation corresponding to the cladding intensity that becomes target, with this dependent variable is the target dependent variable, the dependent variable that puts on the light metal raw material the stage of stage after will be from described interflow deposited after the extrusion modling maintains more than the described target dependent variable, thereby extrusion process designs with mould to hollow, and by using equal dies to carry out this extrusion molding, thereby can stably obtain having the hollow light metal extruded member of sufficient cladding intensity.
In addition, in the above-described embodiment, though aluminium alloy has been confirmed excellent effect of the present invention, the present invention is applicable to other light metals (comprising alloy), for example in the extrusion process of tin, antimony, titanium, magnesium, beryllium etc., also can access same effect.
Claims (6)
1, a kind of extruding method of hollow light metal member utilizes the hollow extrusion pressing mold that the light metal raw material are carried out extrusion process, it is characterized in that, comprising:
Described light metal raw material were once being shunted interflow, back and mutual deposited operation;
By the nib of described hollow extrusion pressing mold, be the operation of desirable cross sectional shape with the light metal raw material extrusion process behind this interflow,
In this extrusion process operation, maintain more than 1.8 granting the raw-material dependent variable of light metal of described interflow after deposited, and carry out this extrusion process.
2, the extruding method of hollow light metal member according to claim 1 is characterized in that,
The metal of the described hollow light metal of described formation member is an aluminium alloy.
3, a kind of extruding method of hollow light metal member, utilize the hollow extrusion pressing mold, with light metal raw material shuntings and collaborate deposited after, extrusion process is the hollow light metal member of desirable cross sectional shape, it is characterized in that, obtain and grant the light metal raw-material dependent variable of described interflow after deposited and the dependency relation of the cladding intensity of the melt-coating part of the goods after the extrusion process, the dependent variable of setting corresponding to the desired value of described cladding intensity based on this dependency relation is the target dependent variable, and keep and grant the light metal raw-material dependent variable of described interflow after deposited more than described target dependent variable, thereby carry out the raw-material extrusion process of this light metal.
4, a kind of hollow extrusion pressing mold, be used for the light metal raw material are shunted and collaborate deposited after, extrusion process is the extrusion process of the hollow light metal member of desirable cross sectional shape, it is characterized in that, designed to be able to and maintain more than 1.8 and push granting the raw-material dependent variable of light metal of described interflow after deposited.
5, hollow extrusion pressing mold according to claim 4 is characterized in that,
This mould is that bridge die, porous are drawn molding or special-shaped casement.
6, a kind of hollow light metal extruded member, by the light metal raw material being shunted and being collaborated deposited back extrusion process is that desirable cross sectional shape obtains, it is characterized in that, maintain to push more than 1.8 and obtain by granting the raw-material dependent variable of light metal of described interflow after deposited, the intensity of its melt-coating part is more than 90% of intensity of exposed portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP146839/2003 | 2003-05-23 | ||
| JP2003146839 | 2003-05-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1795063A true CN1795063A (en) | 2006-06-28 |
| CN100366356C CN100366356C (en) | 2008-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004800140459A Expired - Fee Related CN100366356C (en) | 2003-05-23 | 2004-05-11 | Method of extruding hollow light metal member, die for extruding hollow light metal, and memeber for extruding hollow light metal |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1637246B1 (en) |
| KR (1) | KR100674779B1 (en) |
| CN (1) | CN100366356C (en) |
| AT (1) | ATE549104T1 (en) |
| DK (1) | DK1637246T3 (en) |
| TW (1) | TWI251513B (en) |
| WO (1) | WO2004103596A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5010196B2 (en) * | 2006-07-18 | 2012-08-29 | 株式会社神戸製鋼所 | Heat-resistant aluminum alloy shape manufacturing method, heat-resistant aluminum alloy shape material and heat-resistant aluminum alloy shape forming apparatus |
| DE102020128163B3 (en) * | 2020-10-27 | 2022-02-17 | Helmholtz-Zentrum Hereon Gmbh | Mold and process for the extrusion of metallic materials |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3520168A (en) * | 1966-08-01 | 1970-07-14 | Dow Chemical Co | Feederhole die |
| US3575030A (en) * | 1967-11-01 | 1971-04-13 | Dow Chemical Co | Slanted weld extrusion process |
| CN2155964Y (en) * | 1993-06-02 | 1994-02-16 | 蔡志忠 | Aluminium extruding pipe shaping die |
| JP4174173B2 (en) * | 2000-07-03 | 2008-10-29 | 株式会社神戸製鋼所 | Method and apparatus for extrusion of hollow cross-section metal products |
| JP2002185151A (en) * | 2000-12-19 | 2002-06-28 | Oki Electric Ind Co Ltd | Multilayer printed wiring board |
| JP2003013191A (en) * | 2001-06-28 | 2003-01-15 | Ngk Insulators Ltd | Straight pipe made from metal mainly including aluminum, manufacturing method therfor, and inspection method |
-
2004
- 2004-05-11 EP EP04732202A patent/EP1637246B1/en not_active Expired - Lifetime
- 2004-05-11 KR KR1020057022346A patent/KR100674779B1/en active IP Right Grant
- 2004-05-11 DK DK04732202.9T patent/DK1637246T3/en active
- 2004-05-11 WO PCT/JP2004/006601 patent/WO2004103596A1/en active Application Filing
- 2004-05-11 AT AT04732202T patent/ATE549104T1/en active
- 2004-05-11 CN CNB2004800140459A patent/CN100366356C/en not_active Expired - Fee Related
- 2004-05-17 TW TW093113864A patent/TWI251513B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR100674779B1 (en) | 2007-01-25 |
| ATE549104T1 (en) | 2012-03-15 |
| CN100366356C (en) | 2008-02-06 |
| EP1637246A4 (en) | 2008-06-18 |
| TW200425967A (en) | 2004-12-01 |
| DK1637246T3 (en) | 2012-05-29 |
| KR20060004699A (en) | 2006-01-12 |
| EP1637246B1 (en) | 2012-03-14 |
| TWI251513B (en) | 2006-03-21 |
| WO2004103596A1 (en) | 2004-12-02 |
| EP1637246A1 (en) | 2006-03-22 |
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