CN108296300B - Aluminum profile extrusion die and extrusion forming method and manufacturing method thereof - Google Patents
Aluminum profile extrusion die and extrusion forming method and manufacturing method thereof Download PDFInfo
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- CN108296300B CN108296300B CN201810084357.0A CN201810084357A CN108296300B CN 108296300 B CN108296300 B CN 108296300B CN 201810084357 A CN201810084357 A CN 201810084357A CN 108296300 B CN108296300 B CN 108296300B
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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
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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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
- B21C25/00—Profiling tools for metal extruding
- B21C25/04—Mandrels
Abstract
The invention relates to an aluminum profile extrusion die and an extrusion forming method and a manufacturing method thereof, wherein the aluminum profile extrusion die comprises an upper die and a lower die, the lower die comprises a lower die base body and a first hard insert block, a mounting groove is formed in the lower die base body, a plurality of mounting holes are formed in the first hard insert block, the first hard insert block penetrates through the mounting holes through a plurality of first fasteners and is fixed in the mounting groove, the first fasteners and the mounting holes are in interference fit, the interference magnitude is 0.005-0.012 mm, a die hole penetrating through the lower die base body and the first hard insert block is formed in the lower die, a working belt of the lower die is formed in the position, corresponding to the die hole, of the first hard insert block, and the first fasteners are distributed in a central symmetry mode by using the. The aluminum profile extrusion die provided by the invention has the advantages that the wear resistance and the effective service life are obviously improved, and the surface quality of a profile product is greatly improved. The manufacturing method of the aluminum profile extrusion die provided by the invention has the advantages of simple process, short manufacturing period, low cost and the like.
Description
Technical Field
The invention relates to the field of dies, in particular to an aluminum profile extrusion die and an extrusion forming method and a manufacturing method thereof.
Background
The hollow aluminum profile is generally extruded in the forward direction, the aluminum bar is consistent with the moving direction of the main cylinder of the extruder, and the hollow aluminum profile is extruded after the shunting and welding of the shunting combined die. The split combined die is divided into an upper die and a lower die, wherein the core print of the upper die is generally made of 4Cr5MoSiV1 hot-work die steel. The upper die core head working belt is contacted with a hot aluminum bar, the core head working belt bears great friction stress, the core head working belt is easy to wear, the thickness and the meter weight of the hollow aluminum profile are increased after the core head working belt is worn, the size is poor due to the increase of the thickness, and the aluminum cost is increased due to the increase of the meter weight. Along with the reduction of the wall thickness of the aluminum profile, the deformation degree in the extrusion process is increased, and the extrusion force is increased, so that the abrasion of the die is aggravated, and as a result, the gap of the die is easily increased, so that the wall thickness of the aluminum profile is increased, and the purpose of saving materials cannot be realized. Meanwhile, the surface quality of the profile is reduced due to the abrasion of the die, and the extrusion lines and the extrusion marks are serious.
At present, the requirement of the aluminum profile market on the dimensional tolerance of the extruded profile is higher and higher, and the cost consciousness is stronger and stronger. Therefore, the aluminum profile production manufacturers need to actively deal with the market, and the cost for producing the aluminum profiles needs to be reduced under the condition of ensuring the quality of the aluminum profiles. In the actual production process, the wear out tolerance of the die is the main factor of the type of section die scrapping in advance, although enterprises adopt some die strengthening measures such as nitriding treatment, the surface microhardness of the nitrided working band is between 1000-1250HV, the ideal effect cannot be obtained, and the die cost for producing the light and high-strength section is still very high.
Disclosure of Invention
Therefore, it is necessary to provide an aluminum profile extrusion die, an extrusion molding method thereof and a manufacturing method thereof, so as to solve the problems that the traditional aluminum profile extrusion die working belt is easy to wear and the surface quality of a profile product is poor.
An aluminum profile extrusion die comprises an upper die and a lower die, wherein the upper die and the lower die are matched with each other to form a forming cavity; the lower mould includes lower mould base member and first stereoplasm mosaic block, be equipped with the mounting groove on the lower mould base member, a plurality of mounting holes have been seted up on the first stereoplasm mosaic block, first stereoplasm mosaic block passes through a plurality of first fasteners the mounting hole is fixed in the mounting groove, first fastener with the mounting hole adopts interference fit, and the magnitude of interference is 0.005 ~ 0.012mm, be equipped with on the lower mould and run through the lower mould base member with the nib of first stereoplasm mosaic block, first stereoplasm mosaic block corresponds the position in nib forms the work area of lower mould is a plurality of first fastener with the axis in nib is central symmetric distribution.
In one embodiment, the first fastener has a coefficient of thermal expansion greater than a coefficient of thermal expansion of the first hard mosaic.
In one embodiment, the outer edge of the first hard insert block is in clearance fit with the lower die base body, and the clearance is 0.01-0.015 mm.
In one embodiment, a convex core print is arranged at a position, corresponding to the die hole, on one side, where the upper die is combined with the lower die, of the upper die, the core print sequentially comprises a neck and an embedding section along a discharging direction, the neck protrudes out of the embedding block in the radial direction of the core print, an annular second hard embedding block is sleeved on the embedding block, the second hard embedding block is fixed through a second fastener, the outer edge of the second hard embedding block protrudes out of the neck in the radial direction of the core print, and the outer edge of the second hard embedding block forms a working band of the upper die.
In one embodiment, the second hard insert and the insert section adopt interference fit, and the interference magnitude is 0.005-0.012 mm.
In one embodiment, the core print further comprises a threaded section disposed behind the insert block in the discharge direction, and the second fastener is a nut.
In one embodiment, a gasket is disposed between the second hard insert and the second fastener.
An extrusion molding method of an aluminum profile is characterized in that the aluminum profile extrusion die of any one of the embodiments is used, and the extrusion molding method comprises the following steps:
assembling the upper die and the lower die, enabling the upper die and the lower die to be matched with each other to form a forming cavity, shunting the aluminum ingot through the upper die, and then extruding and forming the aluminum ingot from the forming cavity.
The manufacturing method of the aluminum profile extrusion die comprises the following steps:
manufacturing an upper die and a lower die, manufacturing a convex core print on one side of the upper die, which is used for being combined with the lower die, and forming a die hole on the position, corresponding to the core print, of the lower die;
center on the lower mould centre on the mounting groove is seted up to the nib, gets annular first stereoplasm mosaic block of seting up a plurality of mounting holes, will first stereoplasm mosaic block passes through a plurality of first fasteners the mounting hole is fixed in the mounting groove, first fastener with interference fit is adopted to the mounting hole, and the interference is 0.005 ~ 0.012mm, and is a plurality of first fastener with the axis in nib is central symmetry distribution, the hole of first stereoplasm mosaic block with the nib intercommunication, the lateral wall on the hole including first stereoplasm mosaic block forms the work area of lower mould.
In one embodiment, the method for manufacturing the aluminum profile extrusion die further comprises the following steps:
the core head is sequentially provided with a neck part and an embedded section along the discharging direction, and the neck part protrudes out of the embedded section in the radial direction of the core head;
taking an annular second hard mosaic block, wherein an inner hole of the second hard mosaic block is adapted to the mosaic section, grinding the second hard mosaic block according to the design shape and size of the upper die working band, and grinding the outer edge of the second hard mosaic block until a margin of 0.1-0.3 mm is reserved;
fitting the second hard insert block to the insert block in a sliding manner, and fixing the second hard insert block by using a second fastener;
and polishing and grinding the outer edge of the second hard insert block to a designed size to form a working belt of the upper die.
Compared with the prior art, the invention has the following beneficial effects:
the aluminum profile extrusion die provided by the invention has the advantages that the wear resistance and the effective service life are obviously improved, the surface quality of a profile product is greatly improved, the surface of the product is bright, and extrusion lines and extrusion marks are few. The manufacturing method of the aluminum profile extrusion die provided by the invention has the advantages of simple process, short manufacturing period, low cost and the like.
The manufacturing method can be carried out at normal temperature, and the defects that the mould is deformed to a certain degree and the dimensional accuracy is influenced by the traditional hot charging method are avoided.
Drawings
FIG. 1 is a cross-sectional view of a lower die according to an embodiment;
FIG. 2 is a top view of the lower die shown in FIG. 1;
FIG. 3 is a cross-sectional view of an upper die of an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 3, an aluminum profile extrusion die according to an embodiment includes an upper die 100 and a lower die 200, wherein the upper die 100 and the lower die 200 cooperate with each other to form a molding cavity. The lower mold 200 includes a lower mold base 220 and a first hard insert 230, the lower mold base 220 is provided with a mounting groove, the first hard insert 230 is provided with a plurality of mounting holes, and the first hard insert 230 is fixed in the mounting groove by a plurality of first fasteners 240 passing through the mounting holes. The first fastener 240 is in interference fit with the mounting hole, and the interference magnitude is 0.005-0.012 mm. The lower mold 200 is provided with a mold hole 210 penetrating through the lower mold base 220 and the first hard insert 230, and a working tape of the lower mold 200 is formed at a position of the first hard insert 230 corresponding to the mold hole 210. The plurality of first fastening members 240 are symmetrically disposed about the central axis of the die hole 210.
The lower die 200 adopted by the aluminum profile extrusion die is characterized in that the first hard insert blocks 230 form the working belt of the lower die 200, the wear resistance and the service life of the lower die are obviously improved, and the surface quality of a profile product is greatly improved. The plurality of first fastening members 240 are disposed in a central symmetrical manner about the central axis of the cavity 210, so that a stress difference caused by thermal expansion is zero, and thus the first hard insert 230 is not displaced. The interference between the first fastening piece 240 and the mounting hole is 0.005-0.012 mm, and the interference enables the first fastening piece 240 to be mounted at normal temperature and generates a certain pressing force. In one specific embodiment, the interference between the first fastening member 240 and the mounting hole is 0.01 mm.
In an alternative embodiment, the first fastener 240 has a thermal expansion coefficient greater than that of the first hard mosaic 230. This is advantageous in that the first fastening member 240 and the first hard insert 230 can be tightly fitted together when the mold is operated at a high temperature since the expanded size of the first fastening member 240 is greater than that of the mounting hole. Alternatively, the material of the first fastening member 240 may be hardened by case hardening using, but not limited to, 20# steel or 45# steel.
In one embodiment, the first fastener 240 is a pin. In a specific embodiment, the first hard insert 230 is fixed in the mounting groove by three pins with a diameter of 6mm, and the three pins are symmetrically distributed around the central axis of the die hole 210.
In an alternative embodiment, the outer edge of the first hard insert 230 is in clearance fit with the lower die base 220, and the clearance amount is 0.01-0.015 mm. On one hand, the installation of the first hard insert 230 is facilitated; on the other hand, when the mold is operated at a high temperature, the gap is eliminated by the expansion of the mold, and the first hard insert 230 can be engaged with the lower mold base 220 to increase the fastening of the coupling therebetween. In a specific embodiment, the amount of the gap between the outer edge of the first hard insert 230 and the lower die base 220 is 0.012 mm.
In an alternative embodiment, a protruding core print 110 is disposed on a side of the upper mold 100 for combining with the lower mold 200 corresponding to the mold hole 210, the core print 110 sequentially includes a neck portion 112 and an insert section 114 along the discharging direction, an annular second hard insert 120 is sleeved on the insert section 114, the neck portion 112 protrudes from the insert section 114 in the radial direction of the core print 110 to position the second hard insert 120, the second hard insert 120 is fixed by a second fastener 130, the outer edge of the second hard insert 120 protrudes from the neck portion 112 in the radial direction of the core print 110, and the outer edge of the second hard insert 120 forms a working band of the upper mold 100.
In an alternative embodiment, the second hard insert 120 and the insert section 114 are in an interference fit, and the interference is 0.005-0.012 mm, which enables the second hard insert 120 to be installed at normal temperature and generate a certain pressing force.
In an alternative embodiment, the core print 110 further comprises a threaded section 116, the threaded section 116 being disposed after the insert section 114 in the tapping direction, and correspondingly the second fastener 130 is a nut. In one particular embodiment, the second fastener 130 is a nut of the M12 type. Further, a spacer 140 may be disposed between the second hard insert 120 and the second fastener 130. In other embodiments, the second fastening member 130 may also be a screw, a bolt, or the like, and a corresponding mounting hole is opened on the second hard insert 120.
The base material of the aluminum profile extrusion die can be selected from, but not limited to, H13 die steel, and the material of the first hard insert 230 and the second hard insert 120 is preferably cemented carbide, such as, but not limited to, YG8 tungsten steel.
Further, the present embodiment also provides an extrusion molding method of an aluminum profile, using the aluminum profile extrusion die of any one of the above embodiments, including the steps of:
assembling the upper die 100 and the lower die 200, enabling the upper die 100 and the lower die 200 to be matched with each other to form a forming cavity, shunting the aluminum ingot through the upper die 100, and then extruding and forming the aluminum ingot from the forming cavity.
Further, the embodiment also provides a manufacturing method of the aluminum profile extrusion die, which comprises the following steps:
manufacturing an upper die and a lower die, manufacturing a convex core print on one side of the upper die, which is used for being combined with the lower die, and forming a die hole on the position, which is used for corresponding to the core print, of the lower die;
set up the mounting groove around the nib on the lower mould, get annular first stereoplasm mosaic block of seting up a plurality of mounting holes, pass the mounting hole through a plurality of first fasteners with first stereoplasm mosaic block and fix in the mounting groove, first fastener adopts interference fit with the mounting hole, the magnitude of interference is 0.005 ~ 0.012mm, a plurality of first fasteners are central symmetry distribution with the axis in nib, the hole and the nib intercommunication of first stereoplasm mosaic block, the lateral wall of first stereoplasm mosaic block on the hole forms the work area of lower mould.
In an alternative embodiment, the method for manufacturing the aluminum profile extrusion die further comprises the following steps:
the core head is sequentially provided with a neck part and an embedded section along the discharging direction, and the neck part protrudes out of the embedded section in the radial direction of the core head;
taking an annular second hard insert, wherein an inner hole of the second hard insert is matched with the insert section, grinding the second hard insert according to the design shape and size of the upper die working band, and grinding the outer edge of the second hard insert until a margin of 0.1-0.3 mm is reserved;
the second hard embedded block is matched to the embedded section in a sliding mode and is fixed through a second fastening piece;
and polishing and grinding the outer edge of the second hard insert block to a designed size to form a working belt of the upper die.
Specifically, after the shape and the size of the upper die working band are designed, the second hard insert is ground according to the corresponding design, and the margin of 0.1-0.3 mm is reserved at the outer edge of the second hard insert, namely, the distance from the outer edge of the second hard insert to the axis of the core head is 0.1-0.3 mm more than the design value. In a specific embodiment, the upper die working band is designed to be circular, the outer circle radius is 30mm, and the outer circle of the second hard insert is ground to the radius of 30.2 mm. In other embodiments, the upper mold band may have other shapes, such as polygonal, elliptical, irregular, etc.
In an alternative embodiment, the inner hole size of the second hard insert is ground to be 0.005-0.012 mm smaller than the radial size of the insert section, namely the interference is 0.005-0.012 mm. In a specific embodiment, the insert blocks are cylindrical segments with a radius of 20mm, and the inner bores of the second hard insert blocks are ground into circular holes with a radius of 19.99 mm.
Alternatively, the second fastener may be, but is not limited to, a nut, a screw, a bolt, or the like. In a specific embodiment, a threaded section is arranged behind the embedding section, when the threaded section is manufactured, the radius of the threaded section is reserved with the allowance of 0.2mm, a second hard embedding block is arranged on the embedding section in a sliding mode, then an outer thread of M12 is turned out from the threaded section, the second hard embedding block is screwed and fixed by an M12 nut, and a gasket is arranged between the second hard embedding block and the nut. In this embodiment, after installing the nut, with nut head car for a short time, if adopt mode car taper gradually that the space of keeping away is crescent gradually, can prevent to collide with nut head and fish tail when the section bar is extruded.
In an alternative embodiment, the upper die is mounted on a four-jaw single-action chuck, and the outer edge of the second hard insert is polished and ground in place, i.e., the outer edge of the second hard insert is polished and ground to the designed size.
In an alternative embodiment, a male seam allowance is provided on the upper die, and a female seam allowance matched with the male seam allowance is provided on the lower die. In the embodiment, the outer edge of the male end is ground until a margin of 0.4-0.6 mm is reserved in the manufacturing process, and the outer edge of the male end is ground to the designed size after the second hard insert is assembled.
The manufacturing method can be carried out at normal temperature, and the defects that the mould is deformed to a certain degree and the dimensional accuracy is influenced by the traditional hot charging method are avoided.
The aluminum profile extrusion die provided by the invention has the advantages that the wear resistance and the effective service life are obviously improved, the surface quality of a profile product is greatly improved, the surface of the product is bright, and extrusion lines and extrusion marks are few. The manufacturing method of the aluminum profile extrusion die provided by the invention has the advantages of simple process, short manufacturing period, low cost and the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The aluminum profile extrusion die is characterized by comprising an upper die and a lower die, wherein the upper die and the lower die are matched with each other to form a forming cavity; the lower die comprises a lower die base body and a first hard insert block, the lower die base body is provided with an installation groove, the first hard mosaic block is provided with a plurality of mounting holes and is fixed in the mounting groove by a plurality of first fasteners through the mounting holes, the outer edge of the first hard insert is in clearance fit with the lower die base body, the clearance is 0.01-0.015 mm, the first fastener and the mounting hole are in interference fit, the interference magnitude is 0.005-0.012 mm, the first fastener has a coefficient of thermal expansion greater than that of the first hard mosaic piece, be equipped with on the lower mould and run through the lower mould base member with the nib of first stereoplasm mosaic block, first stereoplasm mosaic block corresponds the position in nib forms the work area of lower mould is a plurality of first fastener with the axis in nib is central symmetry and distributes.
2. The aluminum profile extrusion die as recited in claim 1, wherein the lower die base is made of H13 die steel, and the first hard insert is made of YG8 tungsten steel.
3. The aluminum profile extrusion die as claimed in claim 1, wherein the outer edge of the first hard insert is in clearance fit with the lower die base body, and the clearance is 0.012 mm.
4. The aluminum profile extrusion die as recited in any one of claims 1 to 3, wherein a convex core is arranged at a position corresponding to the die hole on one side of the upper die for being combined with the lower die, the core sequentially comprises a neck and an embedding section along a discharging direction, the neck protrudes out of the embedding block in the radial direction of the core, an annular second hard embedding block is sleeved on the embedding block and fixed through a second fastening piece, the outer edge of the second hard embedding block protrudes out of the neck in the radial direction of the core, and the outer edge of the second hard embedding block forms a working band of the upper die.
5. The aluminum profile extrusion die as claimed in claim 4, wherein the second hard insert block and the insert section are in interference fit, and the interference magnitude is 0.005-0.012 mm.
6. The aluminum profile extrusion die of claim 4, wherein the core print further comprises a threaded section disposed behind the insert block in the discharge direction, the second fastener being a nut.
7. The aluminum profile extrusion die as claimed in claim 6, wherein a gasket is provided between the second hard insert and the second fastener.
8. An extrusion molding method of an aluminum profile, characterized in that the aluminum profile extrusion die of any one of claims 1 to 7 is used, the extrusion molding method comprising the steps of:
assembling the upper die and the lower die, enabling the upper die and the lower die to be matched with each other to form a forming cavity, shunting the aluminum ingot through the upper die, and then extruding and forming the aluminum ingot from the forming cavity.
9. The manufacturing method of the aluminum profile extrusion die is characterized by comprising the following steps of:
manufacturing an upper die and a lower die, manufacturing a convex core print on one side of the upper die, which is used for being combined with the lower die, and forming a die hole on the position, corresponding to the core print, of the lower die;
arranging an installation groove on the lower die around the die hole, taking an annular first hard insert block provided with a plurality of installation holes, penetrating the first hard insert block through the installation holes by a plurality of first fasteners and fixing the first hard insert block in the installation groove, the outer edge of the first hard insert block is in clearance fit with the lower die, the clearance is 0.01-0.015 mm, the first fastener and the mounting hole are in interference fit, the interference magnitude is 0.005-0.012 mm, the thermal expansion coefficient of the first fasteners is larger than that of the first hard mosaic block, the first fasteners are distributed in a central symmetry way by the central axis of the die hole, an inner hole of the first hard insert block is communicated with the die hole, a working belt of the lower die is formed on the side wall of the inner hole of the first hard insert block, and the first hard insert block is installed at normal temperature;
further comprising the steps of:
the core head is sequentially provided with a neck part and an embedded section along the discharging direction, and the neck part protrudes out of the embedded section in the radial direction of the core head;
taking an annular second hard mosaic block, wherein an inner hole of the second hard mosaic block is adapted to the mosaic section, grinding the second hard mosaic block according to the design shape and size of the upper die working band, and grinding the outer edge of the second hard mosaic block until a margin of 0.1-0.3 mm is reserved;
fitting the second hard insert block to the insert block in a sliding manner, and fixing the second hard insert block by using a second fastener;
polishing and grinding the outer edge of the second hard insert block to a designed size to form a working belt of the upper die;
further comprising the steps of:
the upper die is provided with a convex spigot, the lower die is provided with a concave spigot matched with the convex spigot, the outer edge of the convex spigot is ground to a margin of 0.4-0.6 mm, and after the second hard insert block is assembled, the outer edge of the convex spigot is ground to a design size.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810084357.0A CN108296300B (en) | 2018-01-29 | 2018-01-29 | Aluminum profile extrusion die and extrusion forming method and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810084357.0A CN108296300B (en) | 2018-01-29 | 2018-01-29 | Aluminum profile extrusion die and extrusion forming method and manufacturing method thereof |
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| CN108296300A CN108296300A (en) | 2018-07-20 |
| CN108296300B true CN108296300B (en) | 2020-01-17 |
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| CN114393053A (en) * | 2022-01-18 | 2022-04-26 | 扬州瑞斯乐复合金属材料有限公司 | Preparation method of mold |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61209719A (en) * | 1985-03-13 | 1986-09-18 | Showa Alum Corp | Port-hole die |
| EP0656235A1 (en) * | 1993-12-01 | 1995-06-07 | Sumitomo Light Metal Industries Limited | A hollow extruder die for extruding a hollow member of a zinc-containing aluminum alloy |
| CN202070592U (en) * | 2011-02-12 | 2011-12-14 | 上海瑞斯乐复合金属材料有限公司 | One-mould-multi-branch co-extrusion mould |
| CN203917448U (en) * | 2014-06-30 | 2014-11-05 | 浙江华铝铝业股份有限公司 | A kind of extruding die for aluminum shaped material |
| CN105170680A (en) * | 2015-09-08 | 2015-12-23 | 广州科技职业技术学院 | Protective type double-hole extrusion mould for aluminum section bar |
-
2018
- 2018-01-29 CN CN201810084357.0A patent/CN108296300B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61209719A (en) * | 1985-03-13 | 1986-09-18 | Showa Alum Corp | Port-hole die |
| EP0656235A1 (en) * | 1993-12-01 | 1995-06-07 | Sumitomo Light Metal Industries Limited | A hollow extruder die for extruding a hollow member of a zinc-containing aluminum alloy |
| CN202070592U (en) * | 2011-02-12 | 2011-12-14 | 上海瑞斯乐复合金属材料有限公司 | One-mould-multi-branch co-extrusion mould |
| CN203917448U (en) * | 2014-06-30 | 2014-11-05 | 浙江华铝铝业股份有限公司 | A kind of extruding die for aluminum shaped material |
| CN105170680A (en) * | 2015-09-08 | 2015-12-23 | 广州科技职业技术学院 | Protective type double-hole extrusion mould for aluminum section bar |
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| CN108296300A (en) | 2018-07-20 |
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