EP2111934A1 - Stempelmontagewerkzeug für eine strangpressform - Google Patents

Stempelmontagewerkzeug für eine strangpressform Download PDF

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Publication number
EP2111934A1
EP2111934A1 EP08703067A EP08703067A EP2111934A1 EP 2111934 A1 EP2111934 A1 EP 2111934A1 EP 08703067 A EP08703067 A EP 08703067A EP 08703067 A EP08703067 A EP 08703067A EP 2111934 A1 EP2111934 A1 EP 2111934A1
Authority
EP
European Patent Office
Prior art keywords
die
extrusion
pressure receiving
metallic material
mounting hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08703067A
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English (en)
French (fr)
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EP2111934A4 (de
Inventor
Kimihisa Hiramoto
Hidekazu Sakihama
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.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
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 Showa Denko KK filed Critical Showa Denko KK
Publication of EP2111934A1 publication Critical patent/EP2111934A1/de
Publication of EP2111934A4 publication Critical patent/EP2111934A4/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the present invention relates to an extrusion die assembly used for extruding a metal material, and its related art.
  • an extrusion die used for manufacturing a metallic hollow extruded product, such as, e.g., an aluminum heat exchanging tube for use in car air-conditioning heat exchangers
  • a die called a porthole die as shown in Fig. 19A
  • a die called a spider die as shown in Fig. 19B
  • a die called a bridge die as shown in Fig. 19C .
  • extrusion dies are constructed such that a male die 1 and a female die 2 are combined with the mandrel 1a of the male die 1 disposed in the corresponding die hole 2a of the female die 2 to define a circular extrusion hole by and between the mandrel 1a and the die hole 2a.
  • the die it is configured such that a metal billet (metallic material) pressed against the billet pressure receiving surface (metallic material pressure receiving surface 1b) of the male die 1 is introduced in both the dies 1 and 2 via material introduction holes 1c and then passed through the extrusion hole while being plastically deformed, so that an extruded article having a cross-section corresponding to the cross-sectional configuration of the extrusion hole is formed.
  • an extrusion die for a metallic material as disclosed by the below-listed Patent Documents 1 and 2 has been conventionally proposed.
  • the die it is configured such that the billet pressure receiving surface of the male die is formed into a convex configuration protruded in a direction opposite to the billet extruding direction (i.e., protruded rearward) so that the pressing force of the metal billet to be applied to the billet pressure receiving surface can be received by a bridge portion of the male die.
  • the preferred embodiments of the present invention have been developed in view of the above-mentioned and/or other problems in the related art.
  • the preferred embodiments of the present invention can significantly improve upon existing methods and/or apparatuses.
  • the present invention was made to solve the aforementioned problems, and aims to provide an extrusion die assembly capable of enhancing the durability. Other objects and advantages of the present invention will be apparent from the following preferred embodiments.
  • the present invention provides the followingmeans toattain the aforementioned objects.
  • An extrusion die assembly in which an extrusion die is mounted in a die mounting hole of a die mounting plate, so that a metallic material to be introduced into the die mounting hole is introduced in the die via a porthole formed in a metallic material pressure receiving surface of the die, characterized in that a material accumulating portion extending to a point on a more extrusion directional downstream side than an inlet position of the porthole is provided outside the porthole in the die mounting hole so as to accumulate a part of the metallic material introduced into the die mounting hole in the material accumulating portion.
  • the extrusion die comprises a die case having a pressure receiving port ion with an external surface constituting the metallic material pressure receiving surface, a male die mounted in the die case, and a female die mounted in the die case so as to form an extrusion hole by and between the male die and the female die, wherein the pressure receiving surface is formed into a convex configuration protruded toward an upstream side of an extrusion direction, and the porthole is formed in an external periphery of the pressure receiving portion, and wherein the material accumulating portion is provided at an external peripheral portion of the pressure receiving portion.
  • a metallic material extrusion method in which an extrusion die is mounted in a die mounting hole of a die mounting plate so that a metallic material introduced in the die mounting hole is introduced in the die via a porthole formed in a metallic material pressure receiving surface of the extrusion die, wherein a material accumulating portion extending to a point on a more extrusion directional downstream side than an inlet position of the porthole is formed outside the porthole in the die mounting hole so that a part of the metallic material is accumulated in the material accumulating portion when the metallic material is introduced in the die mounting hole.
  • a metallic material extruder comprising:
  • the pressing force of the metallic material can be received by the pressure receiving surface in a dispersed manner when the metallic material is pressed against the pressure receiving surface, which in turn can reduce the pressing force in the normal direction at each portion of the pressure receiving surface.
  • the strength against the pressing force of the metallic material can be improved, resulting in further improved durability.
  • the shearing force to be generated in the die case at the time of extrusion will be reduced.
  • the pressing force of the metallic material can be received more assuredly by the pressure receiving surface in a dispersed manner.
  • the durability can be improved assuredly.
  • the pressing force of the metallic material against the pressure receiving surface can be dispersed in a balanced manner more assuredly, which can improve the strength against the pressure force of the metallic material more assuredly.
  • the shearing force to be generated in the die case at the time of extrusion will be reduced more assuredly.
  • an aluminum or aluminum alloy extruded article can be produced.
  • the extrusion die assembly P1 for a metallic material is used to extrude a multi-passage hollow member (flat multi-passage tube) 90 shown in Figs. 12 and 13 .
  • the hollow member 90 is a metal member.
  • the hollow member constitutes a heat exchanging tube made of aluminum (including aluminum alloy; hereinafter referred to as "aluminum").
  • This hollowmember 90 is a member for use in a heat exchanger, such as, e.g., a condenser for car air-conditioners, and has a flattened configuration having a width larger than a thickness.
  • the hollow portion 91 of this hollow member 90 is divided into a plurality of heat exchanging passages 93 by a plurality of partitioning walls 92 extended in the tube length direction and arranged in parallel with each other.
  • these passages 93 are extended in the tube length direction and arranged in parallel with each other.
  • a direction with which the tube length direction perpendicularly intersects and along which the passages 93 are arranged will be referred to as a "width direction” or a “lateral direction”
  • a direction with which the tube length direction perpendicularly intersects and with which the width direction perpendicularly intersects will be referred to as a “height direction (thickness direction) " or a “vertical direction.
  • Figs. 1 to 4 show an extrusion die assembly P1 as one example of an embodiment of the present invention.
  • the extrusion die assembly P1 of this embodiment is used in manufacturing the aforementioned hollow member 90, and equipped with, as fundamental structural elements, an extrusion die 10 constituting a die set, and a die mounting plate (die holder) 60 for mounting the extrusion die 10.
  • the extrusion die 10 is equipped with a die case 20, a male die 30, a female die 40, and a flow control plate 50.
  • the die case 20 has a hollow structure, and is comprised of a dome-shaped pressure receiving portion 21 to be arranged at the upstream side (rear side) with respect to the extrusion direction of a metal billet as an aluminum material and a base portion 25 to be arranged at the downstream side (front side).
  • the surface thereof (rear surface) facing to a direction opposite to the extrusion direction of the metal billet constitutes a billet pressure receiving surface 22 as a metallic material pressure receiving surface.
  • This billet pressure receiving surface 22 is formed into a convex configuration protruded in a direction (i.e., in a rear direction) opposite to the extrusion direction, more specifically, a convex hemispherical surface configuration.
  • a male die holding slit 23 communicated with the internal hollowportion (i.e., welding chamber 12) is formed along the central axis A1.
  • This male die holding slit 23 is formed into a flat rectangular cross-sectional configuration corresponding to the cross-sectional configuration of the male die 30. Furthermore, as shown in Fig. 9 , at both side portions of the rear end side of the male die holding slit 23, engaging stepped portions 23a and 23a as engaging means for engaging the male die 30, which will be mentioned later, are formed.
  • each porthole 24 is formed into a generally trapezoidal shape as seen from the upstream side of the axial direction.
  • the pair of portholes 24 and 24 are arranged such that the outlet portions (i.e. , front end portions) face an extrusion hole 11 which will be mentioned later.
  • Each porthole 24 is arranged such that the central axis A2 of the porthole 24 approaches the central axis A1 of the pressure receiving portion 21 as it advances toward the downstream side and intersects with the central axis A1 of the pressure receiving portion 21 in an inclined state.
  • the detail structure, such as, e.g., the inclination angle ⁇ of the central axis A2 of this porthole 24, will be detailed later.
  • the base portion 25 is integrally formed with the pressure receiving portion 21 and formed into a circular configuration centering on the axial center A1.
  • the base portion 25 has a diameter larger than that of the pressure receiving portion 21.
  • the base portion 25 and the pressure receiving portion 21 are not always required to be formed integrally, andcanbe formed separately. Whether both the portions 21 and 25 are to be formed integrally or separately can be arbitrarily decided in consideration of various factors, such as, e.g., maintenance efficiency.
  • a female die holding hole 26 having a cross-sectional shape (circular cross-sectional shape) corresponding to the cross-sectional shape of the female die 40 and communicated with the inner welding chamber 12 is formed.
  • the central axis of this female die holding hole 26 is configured so as to coincide with the central axis A1 of the die case 20.
  • an engaging stepped portion 26a for engaging the female die 40 which will be explained later, via a flow control plate 50 is formed.
  • the front half principal portion constitutes a mandrel 31.
  • the front end portion of the mandrel 31 is configured to form a hollow portion 91 of a hollow member 90 and has a plurality of passage forming protruded portions 33 each corresponding to each passage 93 of the hollow member 90.
  • These plural passage forming protruded portions 33 are arranged along the widthwise direction of the mandrel 31 at predetermined intervals.
  • Each gap formed between adjacent passage forming protruded portions 33 constitutes a partition forming groove 32 for forming a partition 92 of a hollow member 90.
  • engaging protrusions 33a and 33a corresponding to the aforementioned engaging stepped portions 23a and 23a of the male die holding slit 23 formed in the die case 20 are integrally provided in a laterally protruded manner.
  • This male die 30 is inserted into the male die holding slit 23 of the aforementioned die case 20 from the side of the billet pressure receiving surface 22 and fixed therein. At this time, the engaging protrusions 33a and 33a of the male die 30 are engaged with the engaging stepped portions 23a and 23a formed in the male die holding slit 23 to be positioned. Thus, the mandrel 31 of the male die 30 is held in a state in which the mandrel 31 of the male die 30 forwardly protrudes from the male die holding slit 23 by a predetermined amount.
  • the basal end face (i.e., rear end face) of the male die 30 is formed so as to constitute a part of the spherical surface forming the billet pressure receiving surface 22 of the die case 20, so that the basal end face (i.e., rear end face) of the male die 30 and the billet pressure receiving surface 22 form a prescribed smooth convex hemispherical surface.
  • the female die 40 is cylindrical, and has, at its both sides of the peripheral surface, key protrusions 47 and 47 extended in parallel with the central axis.
  • the die hole 41 is provided with an inwardly protruded portion along the inner peripheral edge portion so that an outer peripheral portion of the hollow member 90 can be defined.
  • the relief hole 42 is formed into a tapered shape which gradually increases in thickness (height) toward the front end side (downstream side) and opened at the downstream side.
  • the flow control plate 50 is formed into a round shape corresponding to the cross-sectional shape of the female die holding hole 26 of the die case 20. Corresponding to the mandrel 31 of the male die 30 and the die hole 41 of the female die 40, a central through-hole 51 is formed at the center of the flow control plate 50.
  • the female die 40 is mounted and secured in the female die holding hole 26 of the die case 20 via the flow control plate 50.
  • the external periphery of one end face (rear end face) of the female die 40 is engaged with the engaging stepped portion 26a of the female die holding hole 26 via the external peripheral edge portion of the flow control plate 50, so that the female die 40 and the flow control plate 50 are positioned in the axial direction.
  • the key protrusions 47 and 47 of the female die 40 and the key protrusions 57 and 57 of the flow control plate 50 are engaged with the keyways (not illustrated) formed in the inner peripheral surface of the female die holding hole 26 to be positioned in the circumference direction about the central axis.
  • the central axes A2 of the portholes 24 are set to be inclined with respect to the central axis A1 of the die case 20.
  • the inclination angle ⁇ of the central axis A2 of the porthole 24 with respect to the central axis A1 of the die case 20 is set to 3 to 45°, more preferably 10 to 35°, still more preferably 15 to 30° .
  • the accumulated material 75 filled in the aluminum accumulating portion 70 causes an inwardly pressing force from the external periphery of the extrusion die 10 when the accumulated material 75 received a load of the aluminum material in the extrusion direction. That is, a binding force tightening the extrusion die 10 from the external periphery thereof will be applied to the extrusion die 10, further improving the strength of the extrusion die 10, which in turn can further improve the durability.
  • the length of die life could be extended about three times as compared with a conventional one.
  • the male die 30, the female die 40 and the flow control plate 50 are formed separately from the die case 20.
  • the present invention is not limited to the above, and can be constituted such that at least one of the male die 30, the female die 40 and the flow control plate 50 is formed integrally with the die case 20. Furthermore, in the present invention, the flow control plate 50 can be omitted as needed.
  • the explanation is directed to the case in which two portholes are formed at both sides of the central axis.
  • the present invention is not limited to the above. In the present invention, it can be constituted that one porthole is formed or three or more portholes are formed.
  • it can be formed such that the opening area of the porthole inlet is larger than the passage cross-sectional area of the inside portion the porthole.
  • the configuration of the aluminum accumulating portion 70 functioning as a material accumulating portion is not specifically limited.
  • the inlet side peripheral edge portion of the die mounting hole 61 of the die mounting plate 60 can be removed to form a removed portion 72 at the upstream side external periphery of the aluminum accumulating portion 70.
  • the inlet side peripheral portion of the die mounting hole 61 of the die mounting plate 60 i.e., the peripheral edge portion of the die mounting hole 61 at the pressure receiving surface side of the die mounting plate 60, is removed in a chamfered manner.
  • the inner peripheral wall surface 73 of this removed portion 72 is formed into a tapered surface which gradually decreases in diameter toward the downstream side.
  • the inlet side peripheral edge portion of the die mounting hole 61 of the die mounting plate 60 is removed stepwise (L-shaped cross-section), whereby a stepped removed portion 72 is formed at the upstream side external periphery of the aluminum accumulating portion 70. Accordingly, the inner peripheral wall surface 73 of this removed portion 72 extends in parallel with the axis of the die 10.
  • the inlet side peripheral edge portion of the die mounting hole 61 of the die mounting plate 60 is removed in a reverse-chamfered manner, so that a removed portion 72 is formed at the upstream side external periphery of the aluminum accumulating portion 70. Accordingly, the inner peripheral wall surface 73 of this removed portion 72 is formed into a divergent tapered surface (reverse-tapered surface) which gradually increases in diameter toward the downstream side.
  • the die assembly P5 shown in Fig. 17 it can be constituted such that two die mounting holes 61 and 61 are formed in the die mounting plate 60 and dies 10 and 10 are mounted in the die mounting holes 61 respectively.
  • the die assembly P6 shown in Fig. 18 it can be constituted such that a laterally elongated large die mounting hole 61 capable of mounting two dies 10 and 10 is formed in a die mounting plate 60 and two dies 10 and 10 are mounted in the die mounting hole 61 side by side.
  • an additional aluminum accumulating portion 70 is formed between the adjacent dies 10 and 10.
  • the rear end surface (basal end surface) of the male die 30 is formed as a part of the convex surface (spherical surface) constituting the billet pressure receiving surface 22 of the pressure receiving portion 21 and that the rear end surface of the male die 30 and the billet pressure receiving surface 22 collectively form a desired smooth convex surface (spherical surface).
  • the configuration of the rear end surface (basal end surface) of the male die 30 is not limited to the above, and can be configured as follows.
  • the rear end face of the male die 30 in cases where the surface area of the rear end face of the male die 30 is, for example, 1/3 or less of the surface area of the billet pressure receiving surface 22 of the die 10, the rear end face of the male die 30 can be constituted by a part of a columnar external peripheral surface in which the rear end face is circular corresponding to the billet pressure receiving surface 22 in the width direction (longitudinal direction) and straight in the thickness direction (direction perpendicular to the longitudinal direction) because of the following reasons.
  • a die assembly P1 corresponding to the aforementioned embodiment was prepared.
  • two portholes 24 were formed in the pressure receiving portion 21 at both sides of the thickness direction of the extrusion hole 11.
  • the inclination angle ⁇ of this porthole 24 was set to 20°.
  • the billet pressure receiving surface 22 was formed into a 1/2 spherical configuration having a radius of 30 mm.
  • the inner periphery of the die mounting hole 61 constituted a peripheral wall surface of the aluminum accumulating portion 70.
  • the peripheral wall surface of the aluminum accumulating portion 70 extended in parallel with the central axis A1 of the die 10.
  • the female die 40 was adjusted to 1.7 mm in height of the die hole 41 and 20.0 mm in width of the die hole 41.
  • the extrusion die 10 was set to an extruder similar to the extruder shown in the embodiment and extrusion was performed to produce a flat multi-passage tubular member (heat exchanging tubular member) as shown in Figs. 12 and 13 .
  • the die life (the amount (tons) of introducedmaterial until cracks or wear occurred in the die) and the extrusion load were measured. Furthermore, the die life limiting factors were investigated. The results are shown in Table 1.
  • a die assembly P2 corresponding to the first modified embodiment (see Fig. 14 ) was prepared.
  • the inlet side peripheral portion of the die mounting hole 61 of the die mounting plate 60 was removed in a chamfered manner to thereby form a removed portion 72 at the upstream side external periphery of the aluminum accumulating portion 70.
  • the inner peripheral wall surface 73 of this removed portion 72 was formed into a tapered surface which gradually decreased in diameter toward the downstream side.
  • a die assembly P3 corresponding to the second modified embodiment (see Fig. 15 ) was prepared.
  • the inlet side peripheral portion of the die mounting hole 61 of the die mounting plate 60 was removed in a stepped manner (an L-shaped manner) to thereby form a removed portion 72 at the upstream side external periphery of the aluminum accumulating portion 70.
  • the inner peripheral wall surface 73 of this removed portion 72 extended in parallel with the central axis A1 of the die 10.
  • a die assembly P4 corresponding to the third modified embodiment (see Fig. 16 ) was prepared.
  • this die assembly P4 the inlet side peripheral portion of the die mounting hole 61 of the die mounting plate 60 was removed in a reversed-chamfered manner to thereby form a removed portion 72 at the upstream side external periphery of the aluminum accumulating portion 70.
  • the inner peripheral wall surface 73 of this removed portion 72 was formed into a reversed-tapered surface which gradually increased in diameter toward the downstream side.
  • a die assembly P5 corresponding to the fourth modified embodiment (see Fig. 17 ) was prepared.
  • this die assembly P5 two die mounting holes 61 and 61 were formed in the die mounting plate 60. Dies 10 and 10 were mounted in the corresponding die mounting holes 61 and 61.
  • no special processing such as peripheral edge portion removing processing was performed, so that the peripheral wall surface of the aluminum accumulating portion 70 was formed by the inner peripheral surface of each die mounting hole 61. Needless to say, this peripheral wall surface extended in parallel with the central axis A1.
  • a die assembly P6 corresponding to the fifth modified embodiment (see Fig. 18 ) was prepared.
  • this die assembly P6 a single laterally elongated die mounting hole 61 capable of mounting two dies 10 and 10 side by side was formed in the die mounting plate 60.
  • dies 10 and 10 were arranged side by side.
  • the adjacent dies 10 and 10 were communicated with each other in the die mounting hole 61, so that an aluminum accumulating portion 70 was also formed between both the dies 10 and 10.
  • peripheral wall surface of the aluminum accumulating portion 70 was formed by the inner peripheral surface of the die mounting hole 61. Needless to say, this peripheral wall surface extended in parallel with the central axis A1.
  • a die assembly in which a bridge type extrusion die was mounted in a die mounting hole formed in a die mounting plate was prepared.
  • the diameter was 30 mm
  • the height (length along the extrusion direction) was 50 mm
  • the billet pressure receiving surface was formed into a flat surface perpendicular to the extrusion direction.
  • portholes were formed in a flat pressure receiving surface perpendicular to the extrusion direction. No aluminum accumulating portion reaching to a point on a more downstream side than the inlet position of the porthole was formed around the porthole.
  • Example 3 Although cracks of the male die were one of die life limiting factors, a certain die life could be secured and the die life was at least longer than that of Comparative Example.
  • a die assembly P1 corresponding to the aforementioned embodiment was prepared.
  • two portholes 24 were formed in the pressure receiving portion 21 at both sides with respect to the thickness direction of the extrusion hole 11.
  • the inclination angle ⁇ of this porthole 24 was set to 25°.
  • the billet pressure receiving surface 22 of this die 10 was formed into a 1/8 spherical configuration having a radius of 45.4 mm.
  • the diameter of this pressure receiving portion 21 was adjusted to 60 mm.
  • the male die 30 was adjusted to 2.0 mm in height (thickness) of the mandrel 31, 19.2 mm in width of the mandrel 31, 1.2 mm in height of the passage forming protruded portion 33, 0.6 mm in width of the passage forming protruded portion 33, and 0.2 mm in width of the partition forming groove 32.
  • the female die 40 adjusted to 1.7 mm in height of the die hole 41 and 20.0 mm in width of the die hole 41 was used.
  • the extrusion die 10 was set to an extruder similar to the extruder shown in the embodiment and extrusion was performed to produce a flat multi-passage tubular member (heat exchanging tubular member) as shown in Figs. 12 and 13 .
  • an extrusion die 10 which was the same as the extrusion die of Example 7 except that the billet pressure receiving surface 22 was constituted by a 1/6 spherical surface and the radius was set to 40.3 mm was prepared.
  • the extrusion die 10 was set to the same extruder as mentioned above and extrusion was performed to produce a flat multi-passage tubular member.
  • an extrusion die 10 which was the same as the extrusion die of Example 7 except that the billet pressure receiving surface 22 was constituted by a 1/3 spherical surface and the radius was set to 32.0 mm was prepared.
  • the extrusion die 10 was set to the same extruder as mentioned above and extrusion was performed to produce a flat multi-passage tubular member.
  • an extrusion die 10 which was the same as the extrusion die of Example 7 except that the billet pressure receiving surface 22 was constituted by a 1/2 spherical surface and the radius was set to 30.0 mm was prepared.
  • the extrusion die 10 was set to the same extruder as mentioned above and extrusion was performed to produce a flat multi-passage tubular member.
  • an extrusion die 10 which was the same as the extrusion die of Example 7 except that the billet pressure receiving surface 22 was constituted by a 4/6 spherical surface and the radius was set to 32.0 mm was prepared.
  • the extrusion die 10 was set to the same extruder as mentioned above and extrusion was performed to produce a flat multi-passage tubular member.
  • an extrusion die 10 which was the same as the extrusion die of Example 7 except that the billet pressure receiving surface 22 was constituted by a 5/6 spherical surface and the radius was set to 40.3 mm was prepared.
  • the extrusion die 10 was set to the same extruder as mentioned above and extrusion was performed to produce a flat multi-passage tubular member.
  • the die life could be extended and the die production cost could be reduced.
  • the die production cost could be reduced while keeping sufficient long die life, which was excellent in result.
  • the extrusion die assembly according to the present invention can be preferably used in manufacturing an extruded product, such as, e.g., a hollow tube, more specifically, a heat exchanging tube for use in, e.g., automobile air-conditioning gas coolers, evaporators, household hot-water supplying apparatuses.
  • an extruded product such as, e.g., a hollow tube, more specifically, a heat exchanging tube for use in, e.g., automobile air-conditioning gas coolers, evaporators, household hot-water supplying apparatuses.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
EP08703067A 2007-01-12 2008-01-10 Stempelmontagewerkzeug für eine strangpressform Withdrawn EP2111934A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2007004282 2007-01-12
JP2007057263A JP5149517B2 (ja) 2007-01-12 2007-03-07 押出成形用のダイス組付工具
PCT/JP2008/050203 WO2008084832A1 (ja) 2007-01-12 2008-01-10 押出成形用のダイス組付工具

Publications (2)

Publication Number Publication Date
EP2111934A1 true EP2111934A1 (de) 2009-10-28
EP2111934A4 EP2111934A4 (de) 2010-03-17

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US (1) US20100095730A1 (de)
EP (1) EP2111934A4 (de)
JP (1) JP5149517B2 (de)
WO (1) WO2008084832A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2040861A4 (de) * 2006-07-07 2010-03-17 Showa Denko Kk Extrusionsdüse für metallmaterial
EP2049277A4 (de) * 2006-10-03 2010-03-17 Showa Denko Kk Extrusionsmatrize für ein metallisches material
CN102581055A (zh) * 2012-03-09 2012-07-18 无锡凯博易机电科技有限公司 一种微通道换热器扁管制备的挤压模具
US20150047405A1 (en) * 2013-08-16 2015-02-19 Mississippi State University Methods and Systems for Extrusion

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377947A2 (de) * 1989-01-13 1990-07-18 Sankyo Aluminium Industry Company Limited Matrize zum Strangpressen von Metallen
EP1924370A1 (de) * 2005-09-08 2008-05-28 Showa Denko K.K. Extrusionsmatrize für ein metallisches material

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126096A (en) * 1964-03-24 Hydrostatic extrusion system
US2366344A (en) * 1940-10-21 1945-01-02 Aluminum Co Of America Extrusion
US2276468A (en) * 1940-11-19 1942-03-17 Aluminum Co Of America Extrusion die
US2673645A (en) * 1951-06-11 1954-03-30 Moczik Ernest Multiple hole extrusion die
US2971644A (en) * 1955-02-11 1961-02-14 Cefilac Extrusion dies
US3080051A (en) * 1955-10-10 1963-03-05 Demag Ag Fa Extrusion apparatus
US3112828A (en) * 1959-02-09 1963-12-03 Fred L Hill Extrusion dies
US3203215A (en) * 1961-06-05 1965-08-31 Aeroprojects Inc Ultrasonic extrusion apparatus
US3306089A (en) * 1964-02-24 1967-02-28 Barogenics Inc Control of stresses during shock-aided hydrostatic extrusion
US3343388A (en) * 1964-06-02 1967-09-26 Barogenics Inc Rapid extrusion devices
US3364707A (en) * 1965-02-16 1968-01-23 Dow Chemical Co Extrusion forming member and method
FR2082001A5 (de) * 1969-12-08 1971-12-10 Creuzet Robert
DE2414178A1 (de) * 1974-03-23 1975-10-09 Aluminium Walzwerke Singen Verfahren zur herstellung von verbundprofilen sowie vorrichtung zu dessen durchfuehrung
JPS53102938U (de) * 1976-07-01 1978-08-19
GB2221179B (en) * 1988-07-19 1992-08-19 Atomic Energy Authority Uk An improved die assembly
US5263352A (en) * 1992-02-27 1993-11-23 Yugen Kaisha Yano Engineering Combination die assembly and a method of extrusion using the die assembly
US5337593A (en) * 1992-04-17 1994-08-16 Yugen Kaisha Yano Engineering Extrusion die and an extrusion method using same
DE69406524T2 (de) * 1993-12-01 1998-03-12 Sumitomo Light Metal Ind Strangpressmatrize zum Strangpressen von Hohlkörpern aus zinkhaltigen Aluminiumlegierungen
US5832768A (en) * 1994-12-16 1998-11-10 Yugen Kaisha Yano Engineering Die assembly for extruding hollow articles
JPH09174141A (ja) * 1995-12-22 1997-07-08 Yano Eng:Kk 金属製中空材押出用ダイス
DE60233583D1 (de) * 2001-10-23 2009-10-15 Showa Denko Kk Extrusionsdüse zur herstellung eines rohrs mit kleinen hohlabschnitten und für die extrusionsdüse verwendeter dorn
JP2004306124A (ja) * 2003-04-10 2004-11-04 Yano Engineering:Kk 金属製中空材の押出ダイスと押出ダイス用マンドレル
US20100199738A1 (en) * 2004-08-13 2010-08-12 Vip Tooling, Inc., (An Indiana Corporation) Modular extrusion die tools
EP2049277A4 (de) * 2006-10-03 2010-03-17 Showa Denko Kk Extrusionsmatrize für ein metallisches material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377947A2 (de) * 1989-01-13 1990-07-18 Sankyo Aluminium Industry Company Limited Matrize zum Strangpressen von Metallen
EP1924370A1 (de) * 2005-09-08 2008-05-28 Showa Denko K.K. Extrusionsmatrize für ein metallisches material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008084832A1 *

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US20100095730A1 (en) 2010-04-22
WO2008084832A1 (ja) 2008-07-17
EP2111934A4 (de) 2010-03-17
JP5149517B2 (ja) 2013-02-20
JP2008188668A (ja) 2008-08-21

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