CN203872476U - Metal housing of electronic device - Google Patents
Metal housing of electronic device Download PDFInfo
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- CN203872476U CN203872476U CN201420097554.3U CN201420097554U CN203872476U CN 203872476 U CN203872476 U CN 203872476U CN 201420097554 U CN201420097554 U CN 201420097554U CN 203872476 U CN203872476 U CN 203872476U
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- metal shell
- electronic installation
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- 239000002184 metal Substances 0.000 title claims abstract description 171
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 170
- 239000007921 spray Substances 0.000 claims abstract description 133
- 239000000463 material Substances 0.000 claims abstract description 51
- 239000000843 powder Substances 0.000 claims description 63
- 229910052782 aluminium Inorganic materials 0.000 claims description 38
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 38
- 238000009434 installation Methods 0.000 claims description 35
- 239000004411 aluminium Substances 0.000 claims description 33
- 238000003475 lamination Methods 0.000 claims description 21
- 238000009413 insulation Methods 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000010407 anodic oxide Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 20
- 239000007769 metal material Substances 0.000 abstract description 6
- 238000003754 machining Methods 0.000 abstract description 2
- 238000009718 spray deposition Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 59
- 235000010210 aluminium Nutrition 0.000 description 33
- 239000002245 particle Substances 0.000 description 30
- 239000010410 layer Substances 0.000 description 22
- 230000008569 process Effects 0.000 description 17
- 229910000838 Al alloy Inorganic materials 0.000 description 15
- 238000010586 diagram Methods 0.000 description 15
- 230000003647 oxidation Effects 0.000 description 15
- 238000007254 oxidation reaction Methods 0.000 description 15
- 239000007789 gas Substances 0.000 description 14
- 229910000861 Mg alloy Inorganic materials 0.000 description 11
- 229910001220 stainless steel Inorganic materials 0.000 description 9
- 239000010935 stainless steel Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 239000011812 mixed powder Substances 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910000553 6063 aluminium alloy Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 238000010288 cold spraying Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 238000004512 die casting Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 229910001344 5052 aluminium alloy Inorganic materials 0.000 description 3
- 241000446313 Lamella Species 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229940098458 powder spray Drugs 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
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- 238000004381 surface treatment Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000619 316 stainless steel Inorganic materials 0.000 description 1
- 229910001094 6061 aluminium alloy Inorganic materials 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000005238 degreasing Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The utility model provides a metal housing of an electronic device. The metal housing comprises a main metal housing and an internal structure combined to the inner surface of the main metal housing. The internal structure is formed by a spray deposit combined with the inner surface of the main metal housing through direct spray deposition of power material. The metal housing structure solves the problems that for integrally-formed metal housings of electronic devices in the prior art, much CNC machining is needed, not many types of metal materials can be used, the production cost is high, and the utilization rate of materials is low.
Description
Technical field
The utility model relates to electronic installation, relates in particular to the metal shell for this electronic installation.
Background technology
Metal shell or the part metals shell of 3C electronic installation (Computers, Communication and Consumer electronics) are generally concave body structure, are substantially made up of three parts.Part I is the master metal housing that forms primary structure and profile; Part II is the internal structure of concave metal main casing inner surface, comprises load-carrying construction for electronic devices and components or reinforcement are installed and/or the functional structure for radiating management etc.; Part III is the extexine of master metal housing, has a protective effect Al attractive in appearance again as what 6063 aluminum alloy casings generated by anode oxidation process
2o
3extexine.
The integrated metal shell of electronic installation refers between its master metal housing and internal structure as there is no seam or a cementing three-dimensional single piece (unibody).The metal shell of the electronic installation of describing respectively in United States Patent (USP) open US20120030930, US20120050988, US20110164365 and US Patent No. 8341832 just belongs to this integrated metal shell.The part of electronic apparatus metal shell can have or splice the window covering with material that can not shield radio signal, for transmitting radio signal.On described integrated metal shell, conventionally also have hole and the groove of various uses.
It is light and thin as much as possible that the shell of electronic installation of today, especially electronic apparatus (as mobile phone, panel computer, MP3, GPS and notebook computer etc.) is made every effort to, and appearance effect is good.Because aluminium alloy proportion is low, can ornamental excellence than outward appearance after the yield strength high ratio of (yield strength of material with its density), anodic oxidation, in a large number for the manufacture of the integrated metal shell of electronic apparatus.
US Patent No. 8341832 discloses a kind of CNC machine work production method of electronic device housing, can mold excellent performance, specious integrated aluminum alloy casing.But this method of producing by CNC machine work with monoblock aluminum metal sheet material needs a large amount of high speed CNC equipment process times, production cost is very high, stock utilization is very low.Due to the existence of machining stress, be difficult to the base plate milling of integrated aluminum alloy casing to obtain very thin with high speed CNC milling device in addition.
The metal forming techniques such as forging, extruding and rolling are for the production of the blank of integrated metal shell, but still need be the whole part of shell by many CNC machine work moulding.
Above various production methods are all to carry out production integration metal shell with same metal.In electronic installation, also normal use combined sheet metal shell.It uses the thin punching press sheet metal component of an even thickness as master metal housing, and internal structure is fixed on panel beating master metal housing by modes such as welding, bonding, buckle, riveted joints, forms combination sheet metal shell.The combination shell production cost of this non-integral is low, stock utilization is high.Though can combine the thickness of the base plate of sheet metal shell can be thinner than the shell bottom plate of CNC processing, very compact but its internal structure is difficult to accomplish, causes shell integral thickness and/or weight higher than integrated metal shell.
The aluminium alloys such as 5052 and 6063, due to top layer appearance looks elegant after anodic oxidation, are the main materials of producing electronic apparatus metal shell.But due to above-mentioned intensity of aluminum alloy and modulus of elasticity low, easily stress deformation, therefore the material of shell must have certain thickness, can not be too thin, if increase the integral thickness of shell, will increase weight and outward appearance be impacted.At the electronic apparatus of some ultrathin design, the high stainless steel of working strength and modulus of elasticity even titanium alloy carrys out the metal shell of manufactured materials very thin thickness.But these metal shells not only its appearance can not can anodic oxidation generate Al lucuriant in design as 5052 and 6063 aluminium alloys
2o
3extexine, its integrated internal structure of moulding is also very difficult.
Even the aluminum matrix composite of high-intensity 7xxx series alloys and the high rigidity of high strength (also claiming strengthening aluminium), because their surface aesthetic degree after anodic oxidation are inadequate, is difficult to directly apply to the shell of electronic apparatus.
Aluminium alloy and die casting process of magnesium alloy can be produced nearly end form shell at low cost, but the aluminium alloy of die casting or magnesium alloy case are due to the restriction of material, are all difficult to the appearance effect that forms by anode oxidation process good and have an Al of protective effect
2o
3extexine.
In sum,, there is following several problem in the integrated metal shell of existing electronic installation and various production technology:
(1) carry out production integration metal shell with same metal, production cost is high, stock utilization is low.
(2) sheet metal process can not production integration metal shell.
(3) can not use non-aluminum metallic material, can not use high-strength aluminum alloy, go out to have attractive in appearance and Al protective effect by alumilite process explained hereafter
2o
3the integrated metal shell of extexine.
Therefore, be necessary that utility model one is novel, excellent performance, machine work is few, production cost is low, and can anodic oxygen dissolve Al
2o
3the integrated metal shell of pleasing aesthetic appearance face, to overcome the problems referred to above.
Utility model content
The purpose of this utility model is to provide a kind of metal shell of electronic installation, and to solve, in prior art, the integrated metal shell production cost of electronic installation is high, stock utilization is low, and the problem such as available metal material kind is few.
For achieving the above object, the utility model provides a kind of metal shell of electronic installation, described metal shell comprises master metal housing and is combined in the internal structure of described master metal shell inner surface, and directly spray is long-pending is combined in spray that described master metal shell inner surface forms and amasss body and formed by powder body material for described internal structure.
As further improvement of the utility model, between the long-pending body of described master metal shell inner surface and described spray, have combination interface to exist, and microstructure on described combination interface is without macroscopical gap.
For achieving the above object, the utility model also provides a kind of metal shell of electronic installation, the metal shell of described electronic installation comprises master metal housing and is combined in master metal shell inner surface the long-pending body of spray of setting position, and the long-pending body of described spray comprises the long-pending thermal insulation layer of spray and is combined in the outer surface of the long-pending thermal insulation layer of described spray or the long-pending heat-conducting layer of spray around; Directly spray is long-pending in conjunction with forming by heat insulation powder body material for the long-pending thermal insulation layer of described spray, and directly spray is long-pending in conjunction with forming by heat conduction powder body material for the long-pending heat-conducting layer of described spray, and the conductive coefficient of described heat insulation powder body material is lower than the conductive coefficient of described heat conduction powder body material.
As further improvement of the utility model, between the long-pending thermal insulation layer of described master metal shell inner surface and described spray, have combination interface to exist, and microstructure on described combination interface is without macroscopical gap.
As further improvement of the utility model, between the long-pending thermal insulation layer of the long-pending heat-conducting layer of described spray and described spray, there is combination interface to exist; And the microstructure on described combination interface is without macroscopical gap.
As further improvement of the utility model, between the long-pending heat-conducting layer of described spray and described master metal shell inner surface, there is combination interface to exist; And the microstructure on described combination interface is without macroscopical gap.
For realizing aforementioned object, the utility model also provides a kind of metal shell of electronic installation, and the metal shell of described electronic installation comprises master metal housing, is combined in the long-pending thin aluminium lamination of spray of described master metal housing outer surface and the anodic oxide coating of the long-pending thin aluminium lamination outer surface of described spray; Described master metal housing is by sheet metal machine-shaping, and the long-pending thin aluminium lamination of described spray is combined in described master metal housing outer surface and forms by directly spray is long-pending containing aluminium powder body material.
As further improvement of the utility model, between the long-pending thin aluminium lamination of described master metal housing outer surface and described spray, have combination interface to exist, and microstructure on described combination interface is without macroscopical gap.
The beneficial effects of the utility model are the metal shell structures by cold spray technique is prepared, not only reduce the problem that integrated metal shell production cost is high, stock utilization is low of electronic installation in prior art, also solved the problems such as available metal material kind is few simultaneously.
Brief description of the drawings
Fig. 1 is the utility model electronic installation metal shell schematic perspective view.
Fig. 2 is the A-A schematic cross-section of Fig. 1 metal shell.
Fig. 3 is master metal housing schematic diagram.
Fig. 4 is Fig. 3 master metal housing B-B schematic cross-section.
Fig. 5 is the high speed cold spray apparatus schematic diagram that the utility model is prepared metal shell blank.
The position view of the jet pipe of Fig. 6 A-6B high speed cold spray gun in the time of spray frame.
Fig. 7 A is the utility model powder body material is sprayed on the long-pending body of master metal shell inner surface formation spray schematic cross-section by high speed cold.
Fig. 7 B is the schematic diagram that the particle of high speed cold spray forms the long-pending body of spray on injected surface.
Fig. 8 is the process flow diagram of the utility model metal shell forming method.
Fig. 9 is the sub-process flow diagram that the cold spray of the utility model forms shell blank.
Figure 10 is the metal shell schematic cross-section that the utility model is equipped with strengthening frame.
Figure 11 is the schematic cross-section that the utility model has the housing parts of radiating management functional layer.
Figure 12 is the process flow diagram that the utility model manufacture has the metal shell of radiating management functional structure.
Figure 13 A is the metal shell blank schematic diagram that the utility model outer surface has the long-pending aluminium lamination of spray.
Figure 13 B is the metal shell schematic diagram that the utility model has alumilite process extexine.
Figure 14 is the device schematic diagram that the utility model is produced the metal shell that has alumilite process extexine.
Figure 15 is the process flow diagram that the utility model is produced the change metal shell that has alumilite process extexine.
Embodiment
Below with reference to accompanying drawing, each execution mode of the present utility model is described in detail.But these execution modes do not limit the utility model, the conversion in structure, method or function that those of ordinary skill in the art makes according to these execution modes is all included in protection range of the present utility model.
The utility model uses the technology of high speed cold spraying, cold the powder body material of selection being sprayed in master metal shell inner surface formed and spray long-pending body and prepare shell blank, " accurate 3D prints " goes out shell blank, the electronic installation metal shell that is then end form by a small amount of machine work moulding.
High speed cold spraying (Cold Gas Dynamic Spray) is to use high-speed gas to drive metal and nonmetallic trickle powder spray to be coated in a kind of newer technology of body surface.Injected surface is heated up not high at spraying process, thus be " cold spray ", to very little by the performance impact of spray material.The theory of this technology has detailed description in Dutch Elsevier publishing company in " Cold Spray Technology " monograph of the editors such as A. professor Papyrin who publishes for 2007.On market, existing high speed cold spraying equipment is sold.High speed cold spraying is mainly used in protecting metallic surface at present, and in the damaged reparation in metal surface.
Figure 1 shows that the typical structure schematic perspective view of the integrated metal shell 10 that is applied to electronic apparatus (as panel computer), the A-A sectional view that Fig. 2 is Fig. 1.Its by master metal housing 30 and the internal structure 12a, the 12b that in master metal shell inner surface 32, form, 12c, 14,16 and 18a, 18b, 18c form.In the sectional view of Fig. 2, only identify the outer surface 38 of metal shell, do not drawn the hierarchy of extexine.The extexine of the metal shell of prior art generally has three kinds: for 5052,6063 and 6061 aluminum alloy casings, the Al that extexine normally generates by anode oxidation process
2o
3extexine, not only has protective effect, also can dye various colors attractive in appearance; For magnesium alloy case, the coating that extexine is normally thicker, has lost the texture of metal; For stainless steel casing, extexine is the extexine of metal own normally, only has a kind of metallochrome of dullness.
Metal shell 10 can be whole shells or the part shell of electronic installation.Electronic apparatus metal shell has the window of transmission radio signal conventionally, covers (in figure, not drawing) with material that can not shield radio signal.On the bottom of shell 10 and frame, conventionally also have hole and the groove (also not drawing in figure) of various functions.
Belong to boss 12a, the bolt column 12b of inner load-carrying construction and 12c for mounting electronic device, can have bolt hole above.Inner load-carrying construction also can include reinforcement 14, for increasing bulk strength and the rigidity of shell.The border structure 16 that belongs to inner load-carrying construction can be continuous, can be also discontinuous, also can have screwed hole above.Frame aggregated(particle) structure 18a, 18b on frame 16 and 18c represent the stereochemical structure of various particular design on frame.In addition, master metal housing inner bottom surface can also add and belong to 20 and 22 of radiating management functional structure, and its concrete structure and function are shown in Figure 11.
The housing of master metal shown in Fig. 3 30 can be formed by techniques such as metal plate punching, forging, extruding, rolling, machine work and die casting.Fig. 4 is the B-B sectional view of Fig. 3.The inner surface 32 of master metal housing is made up of master metal housing inner bottom surface 34 and master metal shell frame inner surface 36.The material of master metal housing 30 can be the metal materials such as various aluminium alloys, aluminum matrix composite, magnesium alloy, steel, stainless steel, titanium alloy, copper alloy.
Fig. 5 prepares for the utility model the high speed cold spray apparatus 40 that metal shell blank uses, and comprises manipulator 54, Manipulator Controller 56, workpiece transfer platform 60 and the work piece holder 62 of high speed cold spray gun 42, supersonic nozzle 44, nozzle 46, gases at high pressure conduit 48, powder body material feed tube 50, high speed cold spray gun electric controller 52, high speed cold spray gun 42.Need the master metal housing 30 of high speed cold spray to be placed in work piece holder 62, and be fixed in fixture by vacuum suction.The powder granule of inputting through powder body material feed tube 50 drives acceleration by high-speed gas through supersonic nozzle 44, forms jet 58 by nozzle 46 ejections.Part high-velocity particles can be in the time clashing into elevated temperature deformation and spray long-pending be combined in to be hit on surface form the long-pending body 64 of spray, another part particle can be flicked by hitting surface.High speed cold spraying equipment 40 includes powder recovery, in figure, does not draw.When manipulator 54 is controlled spray gun 42 along the mobile cold spray in injected surface, at the uniform velocity mobile for good in 10-300mm/s velocity interval.When high speed cold spray, it is better that powder input speed is controlled effect within the scope of 10-500 Grams Per Minute.For the long-pending body of the large thicker spray of area, take cold spray effect in layer relatively good.
Use different powder body materials, different injected surface and different high-speed gas, the bond strength that body and injected surface are amassed in the intensity of the long-pending body of spray itself and spray can change, about the scope of 20-280Mpa.Hollow rate in the long-pending body of spray is about 0.4-3%.The long-pending efficiency of the spray of powder on injected surface is between 10-90%.
In Fig. 5, jet pipe 44 is vertical with the main casing inner bottom surface 34 being sprayed, and the distance d that nozzle 46 arrives inner bottom surface 34 is between 5-45mm.Boss 12a, bolt column 12b and 12c, reinforcement 14, shell rim 16, and frame aggregated(particle) structure 18a, 18b and 18c are sprayed in master metal shell inner surface 34 and are progressively piled up and form by high speed cold respectively with powder body material.
When Fig. 6 A is high speed cold spray main casing frame inner surface 36, spray gun 42 is with respect to the position view of workpiece metal main casing 30.At this moment jet pipe 44 is not vertical with quilt spray frame inner surface 36, but forms the angle that an angle [alpha] is less than 90 °, and angle α is to be not less than 45 ° as good.As shown in Figure 6B, can, by changing jet pipe and 44 and the angle of cold spray gun 42, make jet pipe 44 approach vertical with frame inwall 36.
Powder body material can be the simple metal powder such as aluminium, copper, zinc, tin, nickel, iron, can be also the alloyed powder of each metal, or magnesium alloy, or the two or more mixed metal powder of these powders, can be also the mixed powder of metal powder and ceramic powder.The particle size distribution of powder body material is 1-160 μ m, and particle mean size is that 10-90 μ m is better, grain shape can be spherical can be also irregularly shaped.
The driving of device 40 can be air, nitrogen or the helium of pressurization.Helium effect is preferably also the most expensive, and nitrogen takes second place.For making driving gas obtain very high speed in jet pipe 44, by pressure at the driving gas of 0.5-4Mpa after gas heater is heated to 250-800oC, the flaring supersonic nozzle 44 changing from small to big through a cross section and become supersonic airstream, and driving the powder particle importing wherein to spray from nozzle 46, formation particle speed reaches the high-speed jet 58 of 250-1000 meter per second.Hot high pressure gas is expanding after acceleration through jet pipe 44, and temperature reduces greatly.Driving gas heater can be in cold spray gun 42 the insides, also can be outside.Due to huge impact, particle can corrode impact surfaces, and particle is clashing into moment adiabatic heating, cause particle to soften plastic deformation, make like this part particle spray securely to amass hit surface, spray also combination securely between long-pending particle together simultaneously, amassed and grow up to form to spray and amass body 64 thereby constantly hit surperficial spray at quilt.For the lower metal dust of plasticity, powder can be heated to ejection at a high speed after 200-350 ° of C, to improve the long-pending efficiency of spray.In high speed cold spray process, any position that should control metal master shell 30 is because high speed cold is sprayed the intensification causing and is no more than 280oC, to reduce the impact of the material property on metal master shell.
Fig. 7 A is that powder body material is sprayed on the long-pending schematic cross-section that forms shell base 70 of master metal shell inner surface 32 spray by high speed cold.This sectional view is corresponding with the sectional view of Fig. 2.In figure, 72a is the cold spray base of boss that includes boss 12a, 72b is the cold spray base of bolt column that includes bolt column 12b, 74 for including the cold spray base of reinforcement of reinforcement 14,76a and the frame and the cold spray base of aggregated(particle) structure that include frame 16a and frame aggregated(particle) structure 18a, 76b is the cold spray base of frame that includes frame 16b.
Fig. 7 B is the schematic diagram that the particle of high speed cold spray forms the long-pending body of spray on main casing inner surface 32.Part high velocity powder particle 80 in jet 58 strikes to be out of shape behind injected surface to be deposited in to be hit and on face, forms the long-pending body 64 of spray.In figure 82 by impact surfaces bullet from particle.The 84th, the combination interface between the long-pending body 64 of spray and main casing inner bottom surface 32.This combination interface can be observed under the microscope, and the microstructure of this combination interface is without macroscopical gap.That is the long-pending body of spray and injected surface conjunction obtain very tight.And neither there is scolder, the viscose glue different from the long-pending body material of described spray in described combination interface, does not also have special welding or the connecting portion different from described combination interface microstructure, also do not have the mechanical connecting structure of other similar rivets or screw etc. simultaneously.
Fig. 8 is main technique 100 schematic flow sheets of the utility model production integration metal shell 10.Sub-technique 102 is to prepare master metal housing 30 by traditional metal forming technologies such as punching press, extruding, forging, rolling, castings; Sub-technique 104 is for shell blank 70 by high speed cold spray.Sub-technique 106 is the integrated metal shell end forms of machine work shell blank forming.Sub-technique 108 is to check that internal structure has zero defect; As zero defect carries out the surface treatment of sub-technique 110, as surperficial anodic oxidation etc., become surface treated integrated metal shell 10; Defectiveness rejected region carried out to cold spray again fills up defect as can be returned to sub-technique 104.
Fig. 9 is the sub-process flow diagram of technique 104 in Fig. 8, further illustrates the concrete sub-technique of cold spray for shell blank 70.Sub-technique 122 is by degreasing and sandblast etc., the surface of required cold spray to be cleaned, and powder body material can be sprayed effectively and amass on injected surface, and improve the bond strength on the long-pending body of spray and injected surface.Sub-technique 124 is to be sprayed and formed shell blank 70 by high speed cold.There is certain internal stress in the long-pending body of spray that cold spray forms, and material ductility is lower; Can, by sub-technique 126 by the requirement of the concrete material of 70 basis of the shell blank after cold spray, be heated to the destressing temperature of setting and be incubated after the regular hour, be cooled to normal temperature remove stress and can improve ductility.The machine work final molding of finally carrying out Fig. 8 neutron technique 106 is metal shell 10.
Shown in Figure 10, be added after the strengthening frame 132 that high-strength material does as steel in the interior frame surrounding of master metal housing 30, then prepare through technique 100 metal shell 130 of having strengthened.Cross section in this cross section corresponding diagram 2.Strengthening frame 132 is in the time that high speed cold is sprayed, and spray is amassed and is combined in frame 76.When electronic apparatus drops to ground, four jiaos, shell is easily the most impaired often, and " L " shape that can only make at four angles interpolation high-strength materials of master metal housing 30 is strengthened after rib, then prepares the metal shell of local strengthening through technique 100.
Mobile electronic terminal device wishes that case surface has more uniform heat distribution, but the metal shell having is too high near the local temperature of thermal source.The utility model can address this problem: can form radiating management functional structure 136 near the position high speed cold spray of thermal source at the inner bottom surface 32 of master metal housing 30 shown in Fig. 1 and Figure 11, make outer surface of outer cover have more uniform heat distribution, wherein 20 is thermal insulation layers, the 22nd, and heat-conducting layer.In Figure 11,138 is inner heat sources of electronic installation.Figure 12 is the schematic diagram of the utility model manufacture with the technological process 140 of the integrated metal shell of radiating management functional structure, and this technique is further refinement and the application to processing step 100.First sub-technique 142 just form thermal insulation layer 20 to the local high speed cold spray heat-insulating powder body of thermal source according to designing requirement at inner bottom surface 32; Heat insulation powder is the material that conductive coefficient is low, as macromolecular material powder, or the mixed powder of macromolecule material powder and the low ceramic powders of conductive coefficient; And then on thermal insulation layer 20 and around cold spray conductive powder body form heat-conducting layer 22; Heat conduction powder body material can be copper powders, aluminium powder, copper alloy powder, Al alloy powder, the mixed powder of powder described in two or more, and the mixed powder material of described powder or described mixed powder and ceramic powders.The heat that thermal source 138 produces like this can distribute uniformly in the larger scope of outer surface of outer cover, can not cause the outer surface of outer cover local overheating near thermal source 138, also can not cause dissipation of heat not gone out.
Steel (as stainless steel), titanium alloy or other have the metal material of high strength and high rigidity, can be used for manufacturing very thin metal shell.And magnesium alloy proportion is low, can be used for manufacturing very light metal shell.But these non-aluminums all can not generate magnificent anodic oxidation outer surface as 5052 or 6063 aluminium alloys.Even if die casting silicon-aluminum shell or high strength 7xxx series alloys, can not generate anodized surface attractive in appearance.The utility model has solved this difficult problem.Figure 13 B is the Al that has of the utility model special preparation
2o
3the schematic cross-section of the metal shell 160 of extexine.Figure 13 B is corresponding with the structure of Fig. 2.
Figure 14 produces outer surface to have device 170 schematic diagrames of thin aluminium lamination metal shell base.The structure of high speed cold spray gun 42 and control system are identical with the device 40 shown in Fig. 5.Metal shell base 148 is not pass through anodized metal shell 10 or master metal housing 30.Metal shell base 148 tips upside down in the cold spray work stage 172 of outer surface, and by vacuum suction in work stage.
Figure 15 produces outer surface to have the technique 180 of the metal shell 160 of anodized aluminum layer.Sub-technique 182 is to prepare metal shell base 148.Sub-technique 184 is aluminium powder to be sprayed on by high speed cold on the outer surface 152 of shell base 148 to form the long-pending aluminium lamination 154 of the spray shown in Figure 14, becomes aluminous layer shell blank 150.Before cold spray, the outer surface 152 of metal shell base 148 should be through cleaning procedures such as sandblasts.Sub-technique 186 is by the technique such as machine work and/or grinding, by smooth long-pending spray aluminium lamination 154 be the thickness even thin aluminium lamination 156 that is e.156 surface must form after surface treatment can anodised thin aluminium lamination outer surface 158, has even aluminium outer metal shell base 150 thereby obtain.Sub-technique 188 is to check that the thin aluminium lamination 156 after grinding and polishing has zero defect.As defectiveness, return sub-technique 184 and carry out high speed cold spray; As zero defect carries out the aluminium anodes anodic oxidation of sub-technique 190, form Figure 13 Al that B is shown with
2o
3the metal shell 160 of extexine.
As shown in figure 14, in the time of the outer surface 152 of high speed cold spray metal shell base 148, by controlling movement and the switch of cold spray gun, or the cold spray work stage 172 of outer surface is controlled in interlock, make jet pipe 44 and injected surface keep as far as possible vertical, and nozzle 46 opposing outer face 152 move with uniform speed, remain unchanged apart from d simultaneously.On outer surface 152, form so the long-pending aluminium lamination 154 of spray uniformly.
As shown in FIG. 13A, long-pending aluminium lamination 154 close attachment of spray are on the outer surface 152 of metal shell base.As shown in Figure 13 B, after anodic oxidation, thin aluminium lamination 156 is converted into aluminium adhesion layer 162 and Al
2o
3layer 166 and transition interface 164, thus required appearance 168 formed.For ensureing the existence of aluminium adhesion layer 162, the thickness of even thin aluminium lamination 156 must be greater than the thickness of anodic oxide coating, is conventionally not less than 20 μ m, generally can be at 20-1000 μ m.
Above-described execution mode is to principle of the present invention and implement explanation and the analysis done.Below, will be described in further detail and how use method of the present utility model to mold the integrated metal shell of electronic installation of the present utility model by embodiment.
The utility model the first execution mode is electronic installation 5052 aluminum alloy casings of preparing as depicted in figs. 1 and 2.Realize by technique 100 shown in Fig. 8.Use 5052 aluminium alloy sheets that sub-technique 102 use conditions of heat treatment are H34 to be stamped into master metal housing 30, lamella thickness t is selected between 0.4 to 3mm; Shell sizes is little, and thickness t can be thinner, and to electronic apparatus, thickness t is generally no more than 2mm.In the time using sub-technique 104, first use step 122 shown in Fig. 9 remove master metal housing 30 inner surface 32 greasy dirts and carry out blasting treatment, to improve the adhesion of powder and inner surface 32; While re-using the shell blank 70 shown in step 124 high speed cold spray formation Fig. 7, the distance d that nozzle 46 arrives injected surface is at 10-40mm; 72a, 72b on cold spray inner bottom surface 34 and 74 o'clock, jet pipe 44 is vertical with bottom surface 34, and in the time of cold spray body shell frame inner surface 36, the angle α of jet pipe 44 and face 36 is between 50-80o.Powder body material is selected 5052 Al alloy powders.The particle size distribution of powder body material is 1-150 μ m, and particle mean size is 10-80 μ m, and particle is irregularly shaped.Prepare shell blank 70 as shown in Figure 7 A.Use sub-technique 106 that shell blank is machined to 5052 aluminum alloy casing end form parts.Form anodic oxidation appearance finally by sub-technique 110.High speed cold spray driving gas Argument List is in table 1, and powder is heated to 200-250 oC.
The utility model the second execution mode is electronic installation 6063 aluminum alloy casings of preparing as depicted in figs. 1 and 2.Realize by technique 100 shown in Fig. 8, make master metal housing 30 with 6063-T6 aluminium alloy, lamella thickness t is selected between 0.4-1mm.Be that 10-20mm, angle α are identical with the utility model the first execution mode apart from d.Driving gas parameter is in table 2, and powder does not heat.
In the time using high speed cold spray to form shell blank 70, use two kinds of different powder body materials to carry out cold spray.Use containing aluminium powder 60-80%, zinc powder 5-20% and Al
2o
3the cold spray of mixed powder of ceramic powder 10-30% forms frame and boss., the particle size distribution of powder body material is 3-60 μ m, and particle mean size is 10-40 μ m, and particle is irregularly shaped.Al
2o
3ceramic particle amasss surface for constantly clearing up spray, improves and sprays long-pending bond strength.Because ceramic particle is difficult to distortion, the pottery of the 1-5% that only has an appointment can be stayed in the long-pending body of spray.Zinc powder, in the time of the non-perpendicular cold spray of jet pipe, is easier to spray and amasss at impact surface.Bolt column forms with copper powder spray is long-pending, because copper is more easily holed and tapping.The granularity of copper powder is identical with mixed powder.Shell base is carried out carrying out anodic oxidation after machine work, obtain 6063 final aluminum alloy casings.
The utility model the 3rd execution mode is the electronic installation metal shell of preparing as depicted in figs. 1 and 2.Realize by technique 100 shown in Fig. 8, make master metal housing 30 with 316 stainless steel gold thin plates, lamella thickness t is selected between 0.3-0.6mm.Apart from d, angle α, driving gas parameter, powder body material, and the preparation method of shell base is all identical with the utility model the second execution mode with process.Difference is that the stainless steel casing of moulding does not carry out anodized.
The utility model the 4th execution mode is to prepare Figure 13 B to be shown with anodic oxidation Al
2o
3the stainless steel casing of extexine.The outer surface of stainless steel casing prepared by the utility model the 3rd execution mode carries out after abrasive jet cleaning, uses the device high speed cold shown in Figure 14 to spray uniform aluminium lamination.Powder body material is aluminium powder, and particle size distribution is 1-50 μ m, and particle mean size is 10-30 μ m, and being shaped as of particle is spherical, and driving gas parameter is in table 3.Be that 10-40mm, angle α are identical with the utility model the first execution mode apart from d.
Even aluminium lamination on stainless steel casing is carried out, after grinding and polishing and blasting treatment, carrying out anodized, obtain and have Al
2o
3the integrated stainless steel casing of appearance.
The utility model the 5th execution mode is to prepare figure to have anodic oxidation Al
2o
3the magnesium alloy case of extexine.First use die casting mode to prepare AZ31B magnesium alloy case.The outer surface of magnesium alloy case is carried out after abrasive jet cleaning, by the identical method of the utility model the 4th execution mode, on magnesium alloy case, generate Al
2o
3appearance.This Al
2o
3layer also plays the anti-corrosion protection effect of the outer surface to magnesium alloy simultaneously.
Be to be understood that, although this specification is described according to execution mode, but be not that each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should make specification as a whole, technical scheme in each execution mode also can, through appropriately combined, form other execution modes that it will be appreciated by those skilled in the art that.
Listed a series of detailed description is above only illustrating for feasibility execution mode of the present utility model; they are not in order to limit protection range of the present utility model, all do not depart from the equivalent execution mode that the utility model skill spirit does or change and all should be included in protection range of the present utility model within.
Claims (8)
1. the metal shell of an electronic installation, it is characterized in that: described metal shell comprises master metal housing and be combined in the internal structure of described master metal shell inner surface, directly spray is long-pending is combined in spray that described master metal shell inner surface forms and amasss body and formed by powder body material for described internal structure.
2. the metal shell of electronic installation as claimed in claim 1, is characterized in that: between the long-pending body of described master metal shell inner surface and described spray, have combination interface to exist, and microstructure on described combination interface is without macroscopical gap.
3. the metal shell of an electronic installation, it is characterized in that: the metal shell of described electronic installation comprises master metal housing and be combined in master metal shell inner surface the long-pending body of spray of setting position, the long-pending body of described spray comprises the long-pending thermal insulation layer of spray and is combined in the outer surface of the long-pending thermal insulation layer of described spray or the long-pending heat-conducting layer of spray around; Directly spray is long-pending in conjunction with forming by heat insulation powder body material for the long-pending thermal insulation layer of described spray, and directly spray is long-pending in conjunction with forming by heat conduction powder body material for the long-pending heat-conducting layer of described spray, and the conductive coefficient of described heat insulation powder body material is lower than the conductive coefficient of described heat conduction powder body material.
4. the metal shell of electronic installation as claimed in claim 3, is characterized in that: between the long-pending thermal insulation layer of described master metal shell inner surface and described spray, have combination interface to exist, and microstructure on described combination interface is without macroscopical gap.
5. the metal shell of electronic installation as claimed in claim 3, is characterized in that: between the long-pending thermal insulation layer of the long-pending heat-conducting layer of described spray and described spray, have combination interface to exist; And the microstructure on described combination interface is without macroscopical gap.
6. the metal shell of electronic installation as claimed in claim 3, is characterized in that: between the long-pending heat-conducting layer of described spray and described master metal shell inner surface, have combination interface to exist; And the microstructure on described combination interface is without macroscopical gap.
7. a metal shell for electronic installation, is characterized in that: the metal shell of described electronic installation comprises master metal housing, is combined in the long-pending thin aluminium lamination of spray of described master metal housing outer surface and the anodic oxide coating of the long-pending thin aluminium lamination outer surface of described spray; Described master metal housing is by sheet metal machine-shaping, and the long-pending thin aluminium lamination of described spray is combined in described master metal housing outer surface and forms by directly spray is long-pending containing aluminium powder body material.
8. the metal shell of electronic installation as claimed in claim 7, is characterized in that: between the long-pending thin aluminium lamination of described master metal housing outer surface and described spray, have combination interface to exist, and microstructure on described combination interface is without macroscopical gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420097554.3U CN203872476U (en) | 2014-02-21 | 2014-03-05 | Metal housing of electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420075746.4 | 2014-02-21 | ||
| CN201420075746 | 2014-02-21 | ||
| CN201420097554.3U CN203872476U (en) | 2014-02-21 | 2014-03-05 | Metal housing of electronic device |
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| CN203872476U true CN203872476U (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420097554.3U Expired - Lifetime CN203872476U (en) | 2014-02-21 | 2014-03-05 | Metal housing of electronic device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110914511A (en) * | 2017-05-31 | 2020-03-24 | 泰诺风保泰控股股份有限公司 | Profile for window, door, facade and cladding elements |
| US10796727B1 (en) | 2019-05-08 | 2020-10-06 | Seagate Technology Llc | Using solid state deposition in the manufacture of data storage devices, and related devices and components thereof |
| US11302363B2 (en) | 2019-05-08 | 2022-04-12 | Seagate Technology Llc | Data storage devices, and related components and methods of making |
-
2014
- 2014-03-05 CN CN201420097554.3U patent/CN203872476U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110914511A (en) * | 2017-05-31 | 2020-03-24 | 泰诺风保泰控股股份有限公司 | Profile for window, door, facade and cladding elements |
| US10796727B1 (en) | 2019-05-08 | 2020-10-06 | Seagate Technology Llc | Using solid state deposition in the manufacture of data storage devices, and related devices and components thereof |
| US11302363B2 (en) | 2019-05-08 | 2022-04-12 | Seagate Technology Llc | Data storage devices, and related components and methods of making |
| US11302364B2 (en) | 2019-05-08 | 2022-04-12 | Seagate Technology Llc | Data storage devices, and related components and methods of making |
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Granted publication date: 20141008 |