CN103302128A - Method for processing high-multiple sunflower heat radiator aluminum section - Google Patents
Method for processing high-multiple sunflower heat radiator aluminum section Download PDFInfo
- Publication number
- CN103302128A CN103302128A CN2012100644048A CN201210064404A CN103302128A CN 103302128 A CN103302128 A CN 103302128A CN 2012100644048 A CN2012100644048 A CN 2012100644048A CN 201210064404 A CN201210064404 A CN 201210064404A CN 103302128 A CN103302128 A CN 103302128A
- Authority
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- Prior art keywords
- die
- extrusion
- heat radiator
- extruding
- processing
- Prior art date
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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Abstract
The invention discloses a method for processing a high-multiple sunflower heat radiator aluminum section. The method comprises the following steps of: 1, designing a thermal extrusion die with a specific structure, wherein the thermal extrusion die comprises an upper die (1) and a lower die (2), and is characterized in that the upper die (1) is in a design in which two layers of inner and outer shunting holes (11 and 12) are arranged; a welding chamber (21) is sunken in the lower die (2), and the lower die (2) is provided with a short working belt (22); 2, controlling an extrusion technology, performing extrusion by a short cast stick (4) which is required to be homogenized, wherein the initial extrusion speed is low; after heat dissipation fins of the section (11) are uniformly extruded out of die holes, the extrusion speed is gradually increased; after the section (11) are uniformly extruded out of the die holes, the section (11) is quickly quenched on line. According to the method, the flowing speed of metal passing through the die holes can be effectively balanced, the direct pressure on blade teeth of a die surface can be reduced and averaged, the test success rate is increased, and the service life of the die is prolonged; furthermore, the heat dissipation fins of a extrude heat dissipater section product is uniform in wall thickness, high in intensity and high in surface smoothness.
Description
Technical field
The present invention relates to a kind of heat radiator aluminium profile processing method, refer to a kind of high multiple heronsbill heat radiator aluminium profile processing method especially.Belong to radiator class aluminium section bar processing technique field.
Background technology
Aluminium alloy is widely used in producing shaped material of radiator because of light weight, attractive in appearance, good thermal conductivity and workability.Shaped material of radiator mainly contains types such as flattened elastic, heronsbill shape, dendriform, their ubiquity radiating fin spacings are short, form the characteristics of a big depth-to-width ratio flute profile between adjacent two radiating fins, this brings very high difficulty for mould design and the extrusion process of shaped material of radiator.
The heronsbill radiator is most typical a kind of in the computer CPU radiator, and this radiator has the characteristics of high density, high multiple.Radiator fins is close and elongated, radially, therefore radiating effect is quite desirable, but the design of the mould of this class shaped material of radiator and extrusion process difficulty are especially outstanding, radiating fin often taking place from the phenomenon of root fracture, causes mould to scrap, simultaneously because extruding force is too high, because metal is uneven by the flow velocity control of nib, the wall unevenness of radiating fin is even.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of high multiple heronsbill heat radiator aluminium profile processing method is provided, with raising die trial success rate and die life, and squeeze out high-quality shaped material of radiator.
Concrete technical scheme of the present invention is as follows:
A kind of high multiple heronsbill heat radiator aluminium profile processing method, it is characterized in that, this method may further comprise the steps: first, design a kind of hot-extrusion mold with ad hoc structure, comprise upper die and lower die, described patrix adopts inside and outside double-deck tap hole design, and described counterdie is arranged with the seam chamber, and the short work zone of design.The second, use the extruding of short casting rod, the casting rod must be handled through homogenising, and the extruding initial velocity is slower, after the radiating fin for the treatment of section bar is evenly extruded nib, could improve extrusion speed gradually, and section bar is extruded and is carried out press quenching rapidly behind the nib and handle.
Each six tap hole of extrusion die patrix ectonexine of the present invention circumferentially evenly distribute, and the tap hole size shape is identical on the same circumference.
Extrusion die counterdie land length of the present invention is 0.2～0.6mm, more than the land length 1mm less than conventional radiator extrusion die.
Casting rod (4) length that extruding of the present invention is used is 400-500mm, and the homogenising treatment temperature of casting rod (4) is 480～500 ℃, insulation 10～15h.
Extruding initial velocity of the present invention is 2-3m/min, and after the radiating fin for the treatment of section bar was evenly extruded nib, extrusion speed was increased to 5-15m/min gradually, and section bar is extruded and carried out press quenching rapidly behind the nib and handle.
The present invention has the following advantages:
1, by inside and outside double-deck tap hole design, balanced metal reduces the direct pressure with even each leaf-teeth of die face by the flow velocity of nib effectively; 2, adopt the design of short work zone, the friction that has produced when having reduced extruding; 3, the casting rod is handled through sufficient homogenising, and uses the excellent extruding of short casting, has reduced extruding force effectively; 4, the radiator-type material products of extrusion modling, the wall thickness of its radiating fin is even, the intensity height, surface smoothness is good.
Description of drawings
Fig. 1 is the assembling schematic diagram of the high multiple heronsbill of the present invention heat radiator aluminium profile extrusion die.
Fig. 2 is the A-A cut-away view of Fig. 1.
Fig. 3 is the B-B cut-away view of Fig. 1.
Fig. 4 is the high multiple heronsbill of the present invention heat radiator aluminium profile extrusion die patrix structural representation.
Fig. 5 is the high multiple heronsbill of the present invention heat radiator aluminium profile extrusion die counterdie structural representation.
Fig. 6 is the high multiple heronsbill of the present invention heat radiator aluminium profile extrusion process schematic diagram.
Fig. 7 is the schematic cross-section of the high multiple heronsbill of the present invention heat radiator aluminium profile.
The figure number explanation is specific as follows:
Patrix 1, counterdie 2; External shunt hole 11, interior tap hole 12; Seam chamber 21, work zone 22; Extrusion axis 3; Aluminium alloy casting rod 4; Recipient 5; Dummy block 6; Extrusion die 7; Extruding die-cushion 8; Blowing device 9; Water injector 10; Shaped material of radiator 11.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment the present invention is described in further detail:
The high multiple heronsbill of the present invention heat radiator aluminium profile processing method is divided into two steps, the first step, extrusion die design, second step, extrusion process control.
Referring to Fig. 1, Fig. 2, Fig. 3, described high multiple heronsbill radiator extrusion die is made up of patrix 1 and counterdie 2.
Referring to Fig. 4, described patrix 1 adopts inside and outside double-deck tap hole design, external shunt hole 11, interior tap hole 12, each six tap hole of ectonexine circumferentially evenly distribute, and the tap hole size shape is identical on the same circumference, balanced metal reduces the direct pressure with even each leaf-teeth of die face by the flow velocity of nib effectively.
Referring to Fig. 2, Fig. 5, described counterdie 2 is arranged with seam chamber 21, and work zone 22 length are 0.2～0.6mm, much smaller than the land length of conventional radiator extrusion die, and the friction that produces when reducing to push.
Referring to Fig. 6, described casting rod 4 carries out full and uniformization processing earlier, and the homogenising treatment temperature is 480～500 ℃, and temperature retention time is 10～15h, and the length of casting rod 4 is 0.5～0.7m.Casting rod 4 carries out sufficient homogenizing to be handled, and uses the extruding of weak point casting rod, mainly is in order to improve the excellent extrusion performance of casting and to reduce extruding force; To cast excellent 4, extrusion die 7 before the extruding, recipient 5 carries out preheating, casting excellent 4 preheat temperatures is 470～500 ℃, extrusion die 7 preheat temperatures are 480～500 ℃, recipient 5 preheat temperatures are 400～450 ℃.Mould 7 approaches the stifled mould or the inhomogeneous phenomenon of flow velocity that easily produce in the time of can reducing the extruding beginning with the excellent 4 preheat temperatures control of casting; Install extrusion die 7 and extruding die-cushion 6 etc., be 2-3m/min when extrusion speed begins, after the radiating fin for the treatment of section bar 11 is evenly extruded nib, extrusion speed is increased to 5-15m/min gradually, it is rapid in online mounted blowing device 9 and water injector 10 when section bar 11 is extruded nib, carry out Quenching Treatment, by the control to extrusion speed and quenching intensity, to guarantee surface quality and the intensity of shape product.
Referring to Fig. 7, described high multiple heronsbill heat radiator aluminium profile schematic cross-section.The radiator-type material products 11 that adopts the present invention to produce, the wall thickness of its radiating fin is even, the intensity height, surface smoothness is good.
Claims (6)
1. one kind high multiple heronsbill heat radiator aluminium profile processing method, it is characterized in that, this processing method may further comprise the steps: first, design a kind of hot-extrusion mold with ad hoc structure, comprise patrix (1) and counterdie (2), described patrix (1) adopts inside and outside double-deck tap hole design (11,12), and described counterdie is arranged with seam chamber (21), and the short work zone (22) of design.
2. the second, short casting rod (4) extruding is used in extrusion process control, casting rod (4) must be handled through homogenising, and the extruding initial velocity is slower, after the radiating fin for the treatment of section bar (11) is evenly extruded nib, improve extrusion speed more gradually, section bar (11) carries out the press quenching processing rapidly after extruding nib.
3. a kind of high multiple heronsbill heat radiator aluminium profile processing method according to claim 1, it is characterized in that: each six tap hole of described extrusion die patrix (1) ectonexine circumferentially evenly distribute, external shunt hole 11, interior tap hole 12, and the tap hole size shape is identical on the same circumference.
4. a kind of high multiple heronsbill heat radiator aluminium profile processing method according to claim 1, it is characterized in that: described extrusion die counterdie (2) land length (22) is 0.2～0.6mm, more than the land length 1mm less than conventional radiator extrusion die.
5. a kind of high multiple heronsbill heat radiator aluminium profile processing method according to claim 1, it is characterized in that: casting rod (4) length that described extruding is used is 400-500mm, the homogenising treatment temperature of casting rod (4) is 480～500 ℃, insulation 10～15h.
6. according to claim 1 or 4 described a kind of high multiple heronsbill heat radiator aluminium profile processing methods, it is characterized in that: described initial velocity is 2-3m/min, after the radiating fin for the treatment of section bar (11) is evenly extruded nib, extrusion speed is increased to 5-15m/min gradually, and section bar (11) carries out the press quenching processing rapidly after extruding nib.
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| CN201210064404.8A CN103302128B (en) | 2012-03-13 | 2012-03-13 | Method for processing high-multiple sunflower heat radiator aluminum section |
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| CN201210064404.8A CN103302128B (en) | 2012-03-13 | 2012-03-13 | Method for processing high-multiple sunflower heat radiator aluminum section |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741402A (en) * | 2013-12-30 | 2015-07-01 | 北京有色金属研究总院 | 5 A06 aluminum alloy small size hollow profile processing method |
| CN106111719A (en) * | 2016-07-20 | 2016-11-16 | 东莞市润华铝业有限公司 | A kind of heronsbill radiator aluminium bar extrusion molding mould |
| CN108941234A (en) * | 2018-07-06 | 2018-12-07 | 扬州瑞斯乐复合金属材料有限公司 | A kind of control method of the extruded velocity of microchannel aluminium flat conduit |
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| JP2000246329A (en) * | 1999-02-25 | 2000-09-12 | Aisin Keikinzoku Co Ltd | Extrusion die for aluminum alloy small size thin wall cross sectional material |
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| CN104741402A (en) * | 2013-12-30 | 2015-07-01 | 北京有色金属研究总院 | 5 A06 aluminum alloy small size hollow profile processing method |
| CN104741402B (en) * | 2013-12-30 | 2017-05-17 | 北京有色金属研究总院 | 5 A06 aluminum alloy small size hollow profile processing method |
| CN106111719A (en) * | 2016-07-20 | 2016-11-16 | 东莞市润华铝业有限公司 | A kind of heronsbill radiator aluminium bar extrusion molding mould |
| CN106111719B (en) * | 2016-07-20 | 2018-06-29 | 东莞市润华铝业有限公司 | A kind of heronsbill radiator aluminium bar extrusion molding mould |
| CN108941234A (en) * | 2018-07-06 | 2018-12-07 | 扬州瑞斯乐复合金属材料有限公司 | A kind of control method of the extruded velocity of microchannel aluminium flat conduit |
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| CN103302128B (en) | 2015-06-17 |
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