CN103317139A - Metal powder one-time injection moulding fan and manufacture method thereof - Google Patents

Metal powder one-time injection moulding fan and manufacture method thereof Download PDF

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Publication number
CN103317139A
CN103317139A CN2013101966005A CN201310196600A CN103317139A CN 103317139 A CN103317139 A CN 103317139A CN 2013101966005 A CN2013101966005 A CN 2013101966005A CN 201310196600 A CN201310196600 A CN 201310196600A CN 103317139 A CN103317139 A CN 103317139A
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fan
metal
metal dust
injection moulding
binding agent
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CN103317139B (en
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王明喜
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CHANGZHOU GIAN TECHNOLOGY Co Ltd
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CHANGZHOU GIAN TECHNOLOGY Co Ltd
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Abstract

The invention discloses a manufacture method of a metal powder one-time injection moulding fan. Metal powder and an organic binding agent are evenly mixed to form substance with rheological property, the substance is injected into a mould cavity in a part shape through an injection moulding machine to form a blank, then the organic binding agent is removed, and the blank is sintered to form a metal fan with high compactness and formed in one time. The invention further discloses the metal powder one-time injection moulding fan. The metal powder one-time injection moulding fan comprises a hub, a plurality of fan blades radially arranged on the hub and a wheel disc for connecting the fan blades, wherein the fan blades extend to the wheel disc from the edge portion of the hub, the plurality of fan blades are connected integrally, and the plurality of fan blades, the hub and the wheel disc are formed integrally. By adopting the mode, parts of the metal fan is even in density, dynamic balance performance is good, the service life of the fan is prolonged, the high-temperature-resisting performance is good, the heat radiating effect is greatly improved, and the production cost is reduced by more than 80% compared with a fan formed by welding metal.

Description

Metal dust shot moulding fan and preparation method thereof
Technical field
The present invention relates to the metal powder injection molding field, particularly relate to a kind of metal dust shot moulding fan and preparation method thereof.
Background technology
Heat dissipation problem is one of maximum technical bottleneck of light and thin type electronics and IT products (such as notebook computer, panel computer etc.) always, heat radiation quality is related to degree of stability and complete machine service life of product operation, so heat dissipation problem is the important step in its product design.
Notebook computer for example, because its volume is smaller, heater element is concentrated, and heat dissipation design has sizable difficulty, and the surface temperature of common CP U is more than 50 degrees centigrade when normally using, and and inside is especially up to 80 degree even upper Baidu.What the fan-cooled radiator that adopts was at present generally used is the plastic cement electric fan, and it mainly contains following two large defectives in the heat radiation course of work:
The first, itself can not dispel the heat the flabellum of plastic cement material, accelerate the means of heat radiation and can only accelerate circulation of air by improving its rotating speed in the confined space, but this consequence is to cause noise and reduced fan life;
Second, the flabellum of plastic cement material is worked between 50 ℃-100 ℃ for a long time can cause the electric fan temperature distortion, cause its dynamic balancing to be lost efficacy, produce noise and accelerate bearing wear, so that radiating effect descends, so that affect performance and the life-span of product, can cause the high temperature abnormality of operation element in the serious situation and burn.
Why adopting the flabellum of plastic cement material, is because also do not have the global formation flabellum of metal material to substitute at present.The fan inside flabellum of location high-end product adopts the metal material manufacturing on a small quantity, because the manufacture method that adopts a plurality of single leaf blades to be welded to connect forms, although radiating effect is improved, has difficulties but produce in enormous quantities, fast, and production cost is very high.
At present, electronic product is day by day frivolous, and cooling system is had higher requirement, and the manufacturing invention of the whole flabellum of metal fan has required to provide the fastest realization possibility to satisfying product design.
Metal powder injection molding is a new forming technique that develops rapidly in the world in recent years, it is advantageous that the micro metal parts that can form complicated shape, and each position even density of goods, excellent performance.
The technological process of metal powder injection molding is for to be uniformly mixed into fine metal dust and organic binder bond for having the material of rheological characteristic, the die cavity that adopts advanced injector injection to have part shape forms blank, subsequently by removing binding agent and through sintering, making its high compaction become metallic article.
My company passes through the design feature of research electric fan, in conjunction with the technique basis of metal powder injection molding, has adopted unique binder formula and degreasing sintered technique, and invention has produced the whole flabellum of metal fan.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of metal dust shot moulding fan and preparation method thereof, can realize the whole flabellum of the metal fan that manufacturing structure is complicated and heat resistance is good in enormous quantities fast, heat dispersion is good, anti-operating temperature is high, prolong fan life, had the extremely strong market competitiveness.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of preparation method of metal dust shot moulding fan is provided, comprises the steps:
(a) batch mixing: metal dust is put into mixing equipment mix and preheating, then put into binding agent evenly mixing 2 ~ 3 hours, get mixed material;
(b) mould manufacturing: the mould to the metal fan manufactures and designs, and forms the mold cavity with metal fan-shaped;
(c) injection moulding: mixed material is injected the barrel of injection moulding machine, then the nozzle by injection (mo(u)lding) machine is injected in the mold cavity of metal fan and obtains blank;
(d) degreasing: blank is warming up to 60 ~ 150 ℃ in container, and constant temperature kept 1 ~ 3 hour, remove binding agent, obtained the crude product spare of metal fan;
(e) sinter molding: the crude product spare after the degreasing is placed in the high temperature sintering furnace, progressively is warming up to 1200 ~ 1400 ℃, and be incubated 1 ~ 6 hour, then be cooled to room temperature, obtained integrated metal fan.
In a preferred embodiment of the present invention, the percentage by weight that described binding agent accounts for mixed material is 8 ~ 20%.
In a preferred embodiment of the present invention, described binding agent and parts by weight thereof are: polyformaldehyde 80 ~ 90, polyethylene 5 ~ 15, ethylene-vinyl acetate copolymer 3 ~ 10, stearic acid or zinc stearate 2 ~ 8.
In a preferred embodiment of the present invention, in the described step (a), the mixing temperature of metal dust and binding agent is 150 ~ 200 ℃.
In a preferred embodiment of the present invention, in the described step (c), the temperature of barrel is controlled at 150 ~ 200 ℃, the temperature of nozzle is controlled at 150 ~ 200 ℃, temperature is controlled at 80 ~ 130 ℃ in the mold cavity, the injection moulding speed of described nozzle is 50 ~ 100g/s, and the pressure of described injection moulding process is controlled at 70 ~ 120MPa.
In a preferred embodiment of the present invention, in the described step (d), programming rate is 5 ~ 15 ℃/min.
In a preferred embodiment of the present invention, in the described step (e), the programming rate of high temperature sintering furnace is 5 ~ 15 ℃/min.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of metal dust shot moulding fan is provided, comprise: wheel hub, be the wheel disc that radial ring is located at a plurality of fan blade on the wheel hub and be used for connects fan blade, described fan blade extends on the wheel disc from the marginal portion of wheel hub, and described a plurality of fan blade are the monoblock type connection and are shaped to one with wheel hub and wheel disc.
In a preferred embodiment of the present invention, the blade quantity that described fan blade is disperseed in circumference of hub is 15 ~ 40.
In a preferred embodiment of the present invention, described fan blade is formed between wheel hub and the wheel disc with the mode of leaning forward or hypsokinesis mode, and described fan blade is 15 ~ 30 degree with respect to the angle of inclination of wheel hub.
The invention has the beneficial effects as follows: the present invention can form integrated metal fan, and each position even density of metal fan, dynamic balance performance is good, prolonged fan life, resistance to elevated temperatures is better, radiating effect improves greatly, and production cost is compared with the fan of metal solder and reduced more than 80%.
Description of drawings
Fig. 1 is the preparation method's of metal dust shot moulding fan of the present invention flow chart;
Fig. 2 is the structural representation of metal dust shot moulding fan of the present invention;
The mark of each parts is as follows in the accompanying drawing: 1, wheel hub, 2, fan blade, 3, wheel disc, 4, circular bottom plate, 5, the annulus wall.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
See also Fig. 1 to Fig. 2, the embodiment of the invention comprises:
A kind of preparation method of metal dust shot moulding fan,
Embodiment one
Be 92% and 8% to get metal dust and binding agent by mass percentage, get the raw materials ready for polyformaldehyde 80, polyethylene 10, ethylene-vinyl acetate copolymer 4, stearic acid or zinc stearate 6 by weight.
(a) batch mixing: metal dust is put into mixing equipment mix and preheating, then put into the even mixing mixing of binding agent 2 hours, melting temperature is 180 ℃, has formed mixed material;
(b) mould manufacturing: the mould to the metal fan manufactures and designs, and forms the mold cavity with metal fan-shaped;
(c) injection moulding: the barrel that mixed material is injected injection moulding machine, then the nozzle by injection (mo(u)lding) machine is injected in the mold cavity of metal fan and obtains blank, wherein barrel temperature is 175 ℃, nozzle temperature is 180 ℃, the mold cavity temperature is 90 ℃, injecting rate is 80g/s, and injection pressure remains 120MPa;
(d) degreasing: blank speed with 5 ℃/min in container is warming up to 110 ℃, and constant temperature kept 3 hours, remove binding agent, obtained the crude product spare of metal fan;
(e) the crude product spare after the degreasing is placed on carries out sintering in the high temperature sintering furnace, the speed with 10 ℃/min in the high temperature sintering furnace is warming up to 1200 ℃, and constant temperature kept 3 hours, then be cooled to room temperature, obtained integrated metal fan.
Embodiment two
Be 85% and 15% to get metal dust and binding agent by mass percentage, get the raw materials ready for polyformaldehyde 85, polyethylene 7, ethylene-vinyl acetate copolymer 4, stearic acid or zinc stearate 4 by weight.
(a) batch mixing: metal dust is put into mixing equipment mix and preheating, then put into the even mixing mixing of binding agent 2.5 hours, melting temperature is 180 ℃, has formed mixed material;
(b) mould manufacturing: the mould to the metal fan manufactures and designs, and forms the mold cavity with metal fan-shaped;
(c) injection moulding: the barrel that mixed material is injected injection moulding machine, then the nozzle by injection (mo(u)lding) machine is injected in the mold cavity of metal fan and obtains blank, wherein barrel temperature is 178 ℃, nozzle temperature is 185 ℃, the mold cavity temperature is 105 ℃, injecting rate is 75g/s, and injection pressure remains 100MPa;
(d) degreasing: blank speed with 6 ℃/min in container is warming up to 120 ℃, and constant temperature kept 2 hours, remove binding agent, obtained the crude product spare of metal fan;
(e) the crude product spare after the degreasing is placed on carries out sintering in the high temperature sintering furnace, the speed with 10 ℃/min in the high temperature sintering furnace is warming up to 1250 ℃, and constant temperature kept 2.5 hours, then be cooled to room temperature, obtained integrated metal fan.
Embodiment three
Be 80% and 20% to get metal dust and binding agent by mass percentage, get the raw materials ready for polyformaldehyde 82, polyethylene 8, ethylene-vinyl acetate copolymer 3, stearic acid or zinc stearate 7 by weight.
(a) batch mixing: metal dust is put into mixing equipment mix and preheating, then put into the even mixing mixing of binding agent 3 hours, melting temperature is 195 ℃, has formed mixed material;
(b) mould manufacturing: the mould to the metal fan manufactures and designs, and forms the mold cavity with metal fan-shaped;
(c) injection moulding: the barrel that mixed material is injected injection moulding machine, then the nozzle by injection (mo(u)lding) machine is injected in the mold cavity of metal fan and obtains blank, wherein barrel temperature is 190 ℃, nozzle temperature is 190 ℃, the mold cavity temperature is 110 ℃, injecting rate is 70g/s, and injection pressure remains 95MPa;
(d) degreasing: blank speed with 5 ℃/min in container is warming up to 128 ℃, and constant temperature kept 2 hours, remove binding agent, obtained the crude product spare of metal fan;
(e) sinter molding: the crude product spare after the degreasing is placed on carries out sintering in the high temperature sintering furnace, will be warming up to 1300 ℃ in the speed of high temperature sintering furnace with 15 ℃/min, and be incubated 2 hours, then be cooled to room temperature, obtained integrated metal fan.
The preparation method of metal dust shot moulding fan of the present invention can form integrated micro metal fan, and each position even density of metal fan, dynamic balance performance is good, resistance to elevated temperatures is better, radiating effect improves greatly, and production cost is compared with the fan of metal solder and reduced more than 80%.
Wherein the binding agent effect is that metal powder granulates is bondd, and has rheological characteristic and lubricity after compound is heated in the injector barrel.The binding agent of making according to prescription of the present invention and component can guarantee the even density of injection moulding blank, has improved degreasing efficient and has sintered the density of parison into.
The metal fan that adopts above-mentioned preparation method to make comprises: wheel hub 1, be the wheel disc 3 that radial ring is located at a plurality of fan blade 2 on the wheel hub 1 and be used for connects fan blade 2.
Described fan blade 2 extends on the periphery of wheel disc 3 from the marginal portion of wheel hub 1, described wheel hub 1 comprises circular bottom plate 4 and the annulus wall 5 that extends vertically upward from circular bottom plate 4 peripheries, and described fan blade 2 is formed on the wheel disc 3 from annulus wall 5 parts of wheel hub 1.
Described a plurality of fan blade 2 is the monoblock type connection and is shaped to one with wheel hub 1 and wheel disc 3, and whole manufacture process need not welding and closing-up, can realize fast production in enormous quantities, and whole production cost is compared with alternate manner and reduced by 80%.
Described fan blade 2 is formed between wheel hub 1 and the wheel disc 3 with the mode of leaning forward or hypsokinesis mode, and fan blade is 15 ~ 30 degree with respect to the angle of inclination of wheel hub.
Particularly, the blade quantity that disperses at wheel hub 1 circumference by the fan blade 2 of metal dust shot moulding is 15 ~ 40, fan blade 2 quality that monoblock type connects are 1g ~ 5g, the thickness of single fan blade 2 is more than or equal to 0.1 mm ~ 0.2mm, and the external diameter size of described fan blade is 20 mm ~ 50mm.
Metal solder fan and metal dust shot moulding fan compare:
As can be seen from the above table, the beneficial effect of metal dust shot moulding fan of the present invention and preparation method thereof is:
One, heat dispersion is good, and metal blade itself has good heat-conductive characteristic, in the situation that the identical plastic cement flabellum of comparing of other condition can dispel the heat faster, has protected electronic component and has reduced energy consumption;
Two, anti-operating temperature is high, has solved the defective of the easy temperature distortion of traditional plastic cement electric fan, has prevented the generation of dynamic balancing Problem of Failure, has prolonged fan life;
Three, can be in enormous quantities fast, more than 80%, have the extremely strong market competitiveness than alternate manner production bulk metal flabellum cost.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.

Claims (10)

1. the preparation method of a metal dust shot moulding fan is characterized in that, comprises the steps:
(a) batch mixing: metal dust is put into mixing equipment mix and preheating, then put into binding agent evenly mixing 2 ~ 3 hours, get mixed material;
(b) mould manufacturing: the mould to the metal fan manufactures and designs, and forms the mold cavity with metal fan-shaped;
(c) injection moulding: mixed material is injected the barrel of injection moulding machine, then the nozzle by injection (mo(u)lding) machine is injected in the mold cavity of metal fan and obtains blank;
(d) degreasing: blank is warming up to 60 ~ 150 ℃ in container, and constant temperature kept 1 ~ 3 hour, remove binding agent, obtained the crude product spare of metal fan;
(e) sinter molding: the crude product spare after the degreasing is placed in the high temperature sintering furnace, progressively is warming up to 1200 ~ 1400 ℃, and be incubated 1 ~ 6 hour, then be cooled to room temperature, obtained integrated metal fan.
2. the preparation method of metal dust shot moulding fan according to claim 1 is characterized in that, the percentage by weight that described binding agent accounts for mixed material is 8 ~ 20%.
3. the preparation method of metal dust shot moulding fan according to claim 2, it is characterized in that, described binding agent and parts by weight thereof are: polyformaldehyde 80 ~ 90, polyethylene 5 ~ 15, ethylene-vinyl acetate copolymer 3 ~ 10, stearic acid or zinc stearate 2 ~ 8.
4. the preparation method of metal dust shot moulding fan according to claim 1 is characterized in that, in the described step (a), the mixing temperature of metal dust and binding agent is 150 ~ 200 ℃.
5. the preparation method of metal dust shot moulding fan according to claim 1, it is characterized in that, in the described step (c), the temperature of barrel is controlled at 150 ~ 200 ℃, the temperature of nozzle is controlled at 150 ~ 200 ℃, temperature is controlled at 80 ~ 130 ℃ in the mold cavity, and the injection moulding speed of described nozzle is 50 ~ 100g/s, and the pressure of described injection moulding process is controlled at 70 ~ 120MPa.
6. the preparation method of metal dust shot moulding fan according to claim 1 is characterized in that, in the described step (d), programming rate is 5 ~ 15 ℃/min.
7. the preparation method of metal dust shot moulding fan according to claim 1 is characterized in that, in the described step (e), the programming rate of high temperature sintering furnace is 5 ~ 15 ℃/min.
8. metal dust shot moulding fan, it is characterized in that, comprise: wheel hub, be the wheel disc that radial ring is located at a plurality of fan blade on the wheel hub and be used for connects fan blade, described fan blade extends on the wheel disc from the marginal portion of wheel hub, and described a plurality of fan blade are the monoblock type connection and are shaped to one with wheel hub and wheel disc.
9. a kind of metal dust shot moulding fan according to claim 8 is characterized in that, the blade quantity that described fan blade is disperseed in circumference of hub is 15 ~ 40.
10. a kind of metal dust shot moulding fan according to claim 8 is characterized in that, described fan blade is formed between wheel hub and the wheel disc with the mode of leaning forward or hypsokinesis mode, and described fan blade is 15 ~ 30 degree with respect to the angle of inclination of wheel hub.
CN201310196600.5A 2013-05-24 2013-05-24 Shaping fan of a metal dust shot and preparation method thereof Active CN103317139B (en)

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CN105252008A (en) * 2015-11-04 2016-01-20 深圳艾利门特科技有限公司 Method for preparing porous heat conduction copper pipes through powder extrusion forming technology
CN105312582A (en) * 2015-10-10 2016-02-10 自贡金成硬质合金有限公司 Integral one-time forming process for hard-alloy orthopaedic scalpel blank
CN105382262A (en) * 2015-11-04 2016-03-09 深圳艾利门特科技有限公司 Manufacturing method of heat conduction copper pipe with inner groove
CN105478742A (en) * 2015-11-27 2016-04-13 上海三展新材料科技有限公司 Feeding formula in metal injection molding technology and preparation technology thereof
CN105715563A (en) * 2014-12-03 2016-06-29 联想(北京)有限公司 Fan and electronic equipment
CN106552942A (en) * 2017-02-06 2017-04-05 深圳市卡德姆科技有限公司 A kind of method of the modeling based binder and injection moulding copper and copper alloy parts for copper and copper alloy injection moulding
CN107052345A (en) * 2016-12-28 2017-08-18 江苏精研科技股份有限公司 Copper alloy injection molding process
CN107542699A (en) * 2017-09-04 2018-01-05 珠海格力电器股份有限公司 The manufacture method of centrifugation blade, centrifugal blower and centrifugation blade
US10018201B2 (en) 2014-08-22 2018-07-10 Beijing Lenovo Software Ltd. Fan and mould for making the same
CN108655405A (en) * 2018-05-25 2018-10-16 合肥汇智新材料科技有限公司 A kind of injection moulding technological process of production
CN109202033A (en) * 2018-11-09 2019-01-15 黄成伟 A kind of metal fittings and preparation method thereof based on mold machine-shaping
CN109500384A (en) * 2018-12-07 2019-03-22 东莞市华研新材料科技有限公司 Based on the mobile phone frame of metal powder injection molding shell processing technology thereof
CN109773192A (en) * 2019-02-13 2019-05-21 恒睿汽车电子(苏州)有限公司 A kind of high pressure oil rail manufacturing method
CN109829260A (en) * 2019-03-29 2019-05-31 江苏精研科技股份有限公司 A kind of emulation design method of 5G high speed fan
CN109848419A (en) * 2019-03-15 2019-06-07 江苏精研科技股份有限公司 A method of nickel base superalloy complex parts are prepared using powder injection-molded
CN111647826A (en) * 2020-06-15 2020-09-11 江苏精研科技股份有限公司 Method for preparing antibacterial stainless steel by adopting powder injection molding process
CN112296341A (en) * 2020-09-15 2021-02-02 广州市鑫富塑胶有限公司 Drop gun needle and preparation method thereof

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US10018201B2 (en) 2014-08-22 2018-07-10 Beijing Lenovo Software Ltd. Fan and mould for making the same
CN105715563A (en) * 2014-12-03 2016-06-29 联想(北京)有限公司 Fan and electronic equipment
CN105312582A (en) * 2015-10-10 2016-02-10 自贡金成硬质合金有限公司 Integral one-time forming process for hard-alloy orthopaedic scalpel blank
CN105382262A (en) * 2015-11-04 2016-03-09 深圳艾利门特科技有限公司 Manufacturing method of heat conduction copper pipe with inner groove
CN105252008A (en) * 2015-11-04 2016-01-20 深圳艾利门特科技有限公司 Method for preparing porous heat conduction copper pipes through powder extrusion forming technology
CN105478742A (en) * 2015-11-27 2016-04-13 上海三展新材料科技有限公司 Feeding formula in metal injection molding technology and preparation technology thereof
CN107052345A (en) * 2016-12-28 2017-08-18 江苏精研科技股份有限公司 Copper alloy injection molding process
CN106552942A (en) * 2017-02-06 2017-04-05 深圳市卡德姆科技有限公司 A kind of method of the modeling based binder and injection moulding copper and copper alloy parts for copper and copper alloy injection moulding
CN107542699A (en) * 2017-09-04 2018-01-05 珠海格力电器股份有限公司 The manufacture method of centrifugation blade, centrifugal blower and centrifugation blade
CN108655405A (en) * 2018-05-25 2018-10-16 合肥汇智新材料科技有限公司 A kind of injection moulding technological process of production
CN109202033A (en) * 2018-11-09 2019-01-15 黄成伟 A kind of metal fittings and preparation method thereof based on mold machine-shaping
CN109500384A (en) * 2018-12-07 2019-03-22 东莞市华研新材料科技有限公司 Based on the mobile phone frame of metal powder injection molding shell processing technology thereof
CN109773192A (en) * 2019-02-13 2019-05-21 恒睿汽车电子(苏州)有限公司 A kind of high pressure oil rail manufacturing method
CN109848419A (en) * 2019-03-15 2019-06-07 江苏精研科技股份有限公司 A method of nickel base superalloy complex parts are prepared using powder injection-molded
CN109848419B (en) * 2019-03-15 2021-06-15 江苏精研科技股份有限公司 Method for preparing nickel-based high-temperature alloy complex part by adopting powder injection molding
CN109829260B (en) * 2019-03-29 2023-04-18 江苏精研科技股份有限公司 Simulation design method of 5G high-speed fan
CN109829260A (en) * 2019-03-29 2019-05-31 江苏精研科技股份有限公司 A kind of emulation design method of 5G high speed fan
CN111647826A (en) * 2020-06-15 2020-09-11 江苏精研科技股份有限公司 Method for preparing antibacterial stainless steel by adopting powder injection molding process
CN112296341A (en) * 2020-09-15 2021-02-02 广州市鑫富塑胶有限公司 Drop gun needle and preparation method thereof

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