CN107297396A - A kind of aluminium alloy pedal manufacture craft - Google Patents
A kind of aluminium alloy pedal manufacture craft Download PDFInfo
- Publication number
- CN107297396A CN107297396A CN201710497392.0A CN201710497392A CN107297396A CN 107297396 A CN107297396 A CN 107297396A CN 201710497392 A CN201710497392 A CN 201710497392A CN 107297396 A CN107297396 A CN 107297396A
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- Prior art keywords
- aluminum alloy
- aluminium alloy
- plate materials
- aluminium
- alloy plate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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- Engineering & Computer Science (AREA)
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention belongs to aluminum alloy processing technology field, it is related to a kind of aluminium alloy pedal manufacture craft, by designing the mould in aluminum alloy extruder so that the aluminum alloy plate materials end face that aluminium alloy cast rod is squeezed out by mould in aluminum alloy extruder is serrated；Then change the internal structure of extruder, an embossing device is added at the mould outlet of aluminum alloy extruder, pressure is applied to the aluminum alloy sheet material surface after extruding by the knurling rolls on embossing device so that the surface of aluminum alloy plate materials produces horizontal lines；Longitudinal lines that the aluminum alloy sheet material surface extruded with extruding machine mold has is engaged to form the lines with laterally and longitudinally alternateing, the frictional force of aluminum alloy sheet material surface can be increased, so that the netted pedal processing efficiency of aluminium alloy and product quality that are made by the aluminium alloy pedal manufacture craft are improved, the production cost of aluminium alloy pedal is reduced, the manufactured energy of aluminium alloy pedal is also saved.
Description
Technical field
The invention belongs to aluminum alloy processing technology field, it is related to a kind of aluminium alloy pedal manufacture craft.
Background technology
Aluminium is the profuse metallic element of content on the earth, and with high specific strength and modulus of elasticity, high conductivity and height
Thermal conductivity, extremely good decay resistance.China's aluminum i ndustry scale occupies third place in the world, with 4,000,000 tons of electrolytic aluminiums of annual output
Production capacity.Aluminium has turned into the second largest metal material that China is only second to steel, is played increasingly in modern people life
Important effect.
For automobile, environmental protection, safety turn into the most important thing, either from energy-saving and emission-reduction still from the angle of recycling economy
Degree, body lightening is all an approach achieved noticeable achievement.Passenger vehicle body lightweight is imperative, load-carrying vehicle, car, track
Automobile body lightweight urgently breaks through.Aluminium alloy is using one of material of comparative maturity in lightweighting materials, according to US aluminum
Often car weight 1kg can be mitigated using 0.45kg aluminium on the report of association, automobile, aluminum automobile can subtract than steel automobile in theory
Weigh 40% or so.
Aluminum alloy materials are the focuses of current automotive material research, alloy improvement, mouldability, the fatigue strength of casting,
In terms of weldability, the raw material of structural member are recycled；In terms of development low cost, the production technology of stable manufacture,
Await further investigation.In the past, (it was mainly used in aviation boat in the past because the reason such as expensive limits high-strength aluminum alloy material
Its industry) application in the automotive industry.After oil crisis occurs, in order to improve fuel economy, automotive dead weight is reduced, as
Mitigate the alternative materials of body of a motor car weight, developed rapidly.
With the implementation of national strategy " the Belt and Road policy ", the demands of facilities for transport and communication is compared to significantly carrying in the past
Rise.Oil truck, locomotive, the pedal of ten thousand tons of steamers use the materials such as stainless steel mostly now, because stainless steel price is high, quality
Big the problems such as, it is unfavorable for the implementation of the Belt and Road national policy.
To reach automotive light weight technology, the purpose such as energy-saving and emission-reduction, our company devises the aluminium alloy with excellent performance
Stretching nets replace the stainless steel material that the pedal of oil truck, locomotive, ten thousand tons of steamers is used.
The content of the invention
In view of this, there is provided a kind of aluminium alloy pedal manufacture craft in order to solve the above problems by the present invention.
To reach above-mentioned purpose, the present invention provides following technical scheme：Comprise the following steps：
A, according to following ratio of weight and number prepare aluminium alloy stock：Si：0.33~0.38%, Fe：≤ 0.2%, Cu：≤
0.04%th, Mg：0.51~0.56%, Cr：≤ 0.05%, Zn：≤ 0.04%, Mn：≤ 0.04%, Ti：≤ 0.05%, Sc：≤
0.01%th, Al：Surplus, each component content value and for 100%；
B, the aluminium alloy stock prepared is added in smelting furnace into melting is liquid aluminium alloy, by liquid aluminium alloy founding
For aluminium alloy cast rod；
C, the aluminium alloy cast rod after founding is sent into extrusion forming in the mould of aluminum alloy extruder after preheating, obtained
To aluminum alloy plate materials, mold temperature is 445~455 DEG C wherein in aluminium alloy cast rod extrusion process, and aluminium alloy cast rod is in a mold
Extrusion speed be 10~12m/min, during extrusion forming aluminum alloy sheet material surface temperature be 520~530 DEG C；
D, the inside of aluminum alloy extruder added into embossing device, by the knurling rolls on embossing device to extruding after
Aluminum alloy sheet material surface applies pressure so that the surfaces of aluminum alloy plate materials produces horizontal lines, will by knurling rolls it is embossed after
Aluminum alloy plate materials carry out it is air-cooled so that aluminum alloy plate materials reach required solid solubility, it is ensured that the mechanical property of aluminum alloy plate materials,
Wherein air-cooled cooldown rate is controlled in 1.50~2.48 DEG C/S；
E, the aluminum alloy plate materials after air-cooled are carried out with tension straingtening, i.e., to the aluminum alloy plate materials application length direction after air-cooled
On load so that aluminum alloy plate materials length direction deflection be 0.7~1.0%, load keep 15~30S after unload；
F, the aluminum alloy plate materials after tension straingtening are drawn in the net in advance within 30~36h；
G, aluminum alloy sheet material surface is punched out processing；
H, punching is handled after aluminum alloy plate materials be fixed on and draw in the net to be drawn in the net in frock, aluminum alloy plate materials draw in the net speed
Spend for 6mm/s；
I, will draw in the net after aluminum alloy plate materials carry out aging strengthening model, aging temp be 150~200 DEG C, aging time is 2
~7h.
Further, the component of aluminium alloy stock and mass fraction ratio are respectively in step A：Si：0.33~0.38%,
Fe：0.2%th, Cu：0.04%th, Mg：0.51~0.56%, Cr：0.05%th, Zn：0.04%th, Mn：0.04%th, Ti：0.05%th,
Sc：0.01%th, Al：Surplus, each component content value and for 100%.
Further, the miscellaneous slag during aluminium alloy stock removes melt in melting in aluminium alloy stock fusion-casting process in step B
And gas.
Further, aluminium alloy cast rod pre-heating temperature is 150~300 DEG C in step C, and preheating time is 10~20min.
Further, the size of aluminum alloy plate materials punching is long 105mm, width 4.5mm in step G.
Further, the size of aluminum alloy plate materials is 236mm*6270mm before being drawn in the net in step H, draws in the net rear aluminum alloy plate materials chi
Very little is 600mm*6000mm.
Further, the aluminum alloy plate materials aging heat treatment aging temp after being drawn in the net in step I is 185 DEG C, aging time
For 5h.
The beneficial effects of the present invention are：
1st, aluminium alloy pedal manufacture craft of the invention, by designing the mould in aluminum alloy extruder so that aluminium is closed
The aluminum alloy plate materials end face that golden casting rod is squeezed out by mould in aluminum alloy extruder is serrated；Then the interior of extruder is changed
Portion's structure, adds an embossing device at the mould outlet of aluminum alloy extruder, by the knurling rolls on embossing device to extruding
Later aluminum alloy sheet material surface applies pressure so that the surface of aluminum alloy plate materials produces horizontal lines；Wherein on embossing device
Embossing refer in aluminum alloy sheet material surface pressure a lot of transverse direction lines, the aluminum alloy sheet material surface extruded with extruding machine mold
The longitudinal lines having is engaged to form the lines with laterally and longitudinally alternateing, and the purpose is to increase aluminum alloy plate materials table
The frictional force in face.The aluminum alloy plate materials after embossed are carried out again air-cooled, tension straingtening, punching, draw in the net, the technique stream such as timeliness
Journey.Embossing device is made up of knurling rolls, cylinder, PLC control system, because the aluminum alloy plate materials temperature of firm extrusion forming is higher,
So embossing is relatively easy to, and corresponding dispensing to aluminum alloy plate materials, extrusion process are improved, finally to tension straingtening
Aluminum alloy plate materials afterwards, which are punched out, draw in the net technique is made the netted pedal of aluminium alloy.
2nd, the aluminium alloy prepared by the aluminium alloy pedal manufacture craft of the present invention, which draws in the net sheet material, well to apply
On the pedal of vehicle, instead of stainless steel, mitigate weight, reduce cost, security performance is high.
3rd, in aluminium alloy pedal manufacture craft of the invention by aluminum alloy plate materials by extrusion die exit to squeezing
Aluminum alloy plate materials after going out are embossed first to be heated instead of the conventional aluminum alloy plate materials to processing, then the technique stream being embossed
Journey, improves operating efficiency, saves the energy.In addition the netted pedal of the aluminium alloy can also be according to the difference of application field, control
System draws in the net amplitude size, it is applied in places such as fence, guardrails.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out
Explanation：
Fig. 1 is the aluminum alloy plate materials structural representation after being drawn in the net in embodiment；
Fig. 2 extrudes the structural representation of section for the aluminum alloy plate materials after extruder extrusion in embodiment；
Fig. 3 is the structural representation of knurling rolls in embodiment.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Embodiment 1：
A kind of aluminium alloy pedal manufacture craft, comprises the following steps：
A, dispensing：Aluminum alloy plate materials each element mass percent proportioning is as follows：
| Element | Si | Fe | Cu | Mg | Cr | Zn | Mn | Ti | Sc | Al |
| Content | 0.33 | 0.20 | 0.04 | 0.51 | 0.05 | 0.04 | 0.04 | 0.05 | 0.01 | Surplus |
B, founding：It is liquid aluminium alloy that the aluminium alloy stock prepared is added into melting in smelting furnace, after being melted down
Appropriate refining agent is added in liquid aluminium alloy, is aluminium alloy cast rod, aluminium alloy stock by the liquid aluminium alloy founding after refining
Miscellaneous slag and gas in removing melt in melting；
C, extrusion forming：Aluminium alloy cast rod after founding is sent into after preheating in the mould of aluminum alloy extruder and squeezed
It is molded, aluminum alloy plate materials are obtained, wherein aluminium alloy cast rod pre-heating temperature is 150 DEG C, and preheating time is 10min, and aluminium is closed
Mold temperature is 445 DEG C in golden casting rod extrusion process, and the extrusion speed of aluminium alloy cast rod in a mold is 12m/min, is squeezed into
Aluminum alloy sheet material surface temperature is 520 DEG C during type；
D, embossing：The inside of aluminum alloy extruder is added into embossing device, by the knurling rolls on embossing device to extruding
Later aluminum alloy sheet material surface applies pressure so that the surface of aluminum alloy plate materials produces horizontal lines, will be by being embossed roll-in
Aluminum alloy plate materials after flower carry out air-cooled so that aluminum alloy plate materials reach required solid solubility, it is ensured that the power of aluminum alloy plate materials
Performance is learned, wherein air-cooled cooldown rate is controlled in 1.50 DEG C/S；
E, tension straingtening：Aluminum alloy plate materials after air-cooled are carried out with tension straingtening, i.e., the aluminum alloy plate materials after air-cooled are applied
Plus the load on length direction so that aluminum alloy plate materials are 0.7% in the deflection of length direction, and load keeps unloading after 15S；
F, turn sequence：Aluminum alloy plate materials after tension straingtening are drawn in the net in advance within 36h, it is to avoid section bar storage period mistake
Natrual ageing occurs long, follow-up processing of drawing in the net is influenceed；
G, punching：Aluminum alloy sheet material surface is punched out processing, the size of punching is long 105mm, width 4.5mm；
H, draw in the net：Aluminum alloy plate materials after punching is handled, which are fixed on, to draw in the net to be drawn in the net in frock, aluminum alloy plate materials
Speed draw in the net for 6mm/s, the size of aluminum alloy plate materials is 236mm*6270mm before drawing in the net, drawing in the net rear aluminum alloy plate materials size is
600mm*6000mm；
I, aging strengthening model：Aluminum alloy plate materials after drawing in the net carry out aging strengthening model, and aging temp is 150 DEG C, timeliness
Time is 2h.
Embodiment 2：
A kind of aluminium alloy pedal manufacture craft, comprises the following steps：
A, dispensing：Aluminum alloy plate materials each element mass percent proportioning is as follows：
| Element | Si | Fe | Cu | Mg | Cr | Zn | Mn | Ti | Sc | Al |
| Content | 0.38 | 0.20 | 0.04 | 0.56 | 0.05 | 0.04 | 0.04 | 0.05 | 0.01 | Surplus |
B, founding：It is liquid aluminium alloy that the aluminium alloy stock prepared is added into melting in smelting furnace, after being melted down
Appropriate refining agent is added in liquid aluminium alloy, is aluminium alloy cast rod, aluminium alloy stock by the liquid aluminium alloy founding after refining
Miscellaneous slag and gas in removing melt in melting；
C, extrusion forming：Aluminium alloy cast rod after founding is sent into after preheating in the mould of aluminum alloy extruder and squeezed
It is molded, aluminum alloy plate materials are obtained, wherein aluminium alloy cast rod pre-heating temperature is 300 DEG C, and preheating time is 20min, and aluminium is closed
Mold temperature is 455 DEG C in golden casting rod extrusion process, and the extrusion speed of aluminium alloy cast rod in a mold is 12m/min, is squeezed into
Aluminum alloy sheet material surface temperature is 530 DEG C during type；
D, embossing：The inside of aluminum alloy extruder is added into embossing device, by the knurling rolls on embossing device to extruding
Later aluminum alloy sheet material surface applies pressure so that the surface of aluminum alloy plate materials produces horizontal lines, will be by being embossed roll-in
Aluminum alloy plate materials after flower carry out air-cooled so that aluminum alloy plate materials reach required solid solubility, it is ensured that the power of aluminum alloy plate materials
Performance is learned, wherein air-cooled cooldown rate is controlled in 2.48 DEG C/S；
E, tension straingtening：Aluminum alloy plate materials after air-cooled are carried out with tension straingtening, i.e., the aluminum alloy plate materials after air-cooled are applied
Plus the load on length direction so that aluminum alloy plate materials are 1.0% in the deflection of length direction, and load keeps unloading after 30S；
F, turn sequence：Aluminum alloy plate materials after tension straingtening are drawn in the net in advance within 36h, it is to avoid section bar storage period mistake
Natrual ageing occurs long, follow-up processing of drawing in the net is influenceed；
G, punching：Aluminum alloy sheet material surface is punched out processing, the size of punching is long 105mm, width 4.5mm；
H, draw in the net：Aluminum alloy plate materials after punching is handled, which are fixed on, to draw in the net to be drawn in the net in frock, aluminum alloy plate materials
Speed draw in the net for 6mm/s, the size of aluminum alloy plate materials is 236mm*6270mm before drawing in the net, drawing in the net rear aluminum alloy plate materials size is
600mm*6000mm；
I, aging strengthening model：Aluminum alloy plate materials after drawing in the net carry out aging strengthening model, and aging temp is 200 DEG C, timeliness
Time is 7h.
Embodiment 3：
The difference of embodiment 3 and embodiment 1 is the aluminum alloy plate materials aging heat treatment timeliness temperature after being drawn in the net in step I
Spend for 185 DEG C, aging time is 5h.
Comparative example：
The difference of comparative example and embodiment 3 is, after the aluminum alloy plate materials aging strengthening model after step C extrusion formings,
Obtain aluminum alloy plate materials finished product.The aluminum alloy plate materials of finished product are first heated and are embossed again by embossing device.
Index is tested and assessed：
The netted pedal of aluminium alloy obtained to embodiment 1~3 and comparative example enters row index test and appraisal, evaluating result such as table
One：
Table one
As can be seen here, handling process of the invention is very outstanding, by designing the mould in aluminum alloy extruder so that aluminium
The aluminum alloy plate materials end face that alloy casting rod is squeezed out by mould in aluminum alloy extruder is in longitudinal zigzag；It is aluminium alloy extruded
Knurling rolls at the mould outlet of machine on embossing device apply pressure to the aluminum alloy sheet material surface after extruding so that aluminium alloy
The surface of sheet material produces horizontal lines, and longitudinal lines of aluminum alloy sheet material surface is alternateed with horizontal lines so that final system
The frictional force increase of the netted foot-operated plate surface of standby aluminium alloy.And because the aluminum alloy sheet material surface after extruding has certain temperature
Degree, preheats aluminum alloy plate materials finished product relative to tradition the technique being embossed again, and the aluminum alloy plate materials embossing of this patent is more laborsaving,
The processing efficiency of the netted pedal of aluminium alloy is substantially increased, 30% or so the energy is also saved.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (7)
1. a kind of aluminium alloy pedal manufacture craft, it is characterised in that comprise the following steps：
A, according to following ratio of weight and number prepare aluminium alloy stock：Si：0.33~0.38%, Fe：≤ 0.2%, Cu：≤
0.04%th, Mg：0.51~0.56%, Cr：≤ 0.05%, Zn：≤ 0.04%, Mn：≤ 0.04%, Ti：≤ 0.05%, Sc：≤
0.01%th, Al：Surplus, each component content value and for 100%；
B, the aluminium alloy stock prepared is added in smelting furnace into melting is liquid aluminium alloy, is aluminium by liquid aluminium alloy founding
Alloy casting rod；
C, the aluminium alloy cast rod after founding is sent into extrusion forming in the mould of aluminum alloy extruder after preheating, obtain aluminium
In sheet alloy, wherein aluminium alloy cast rod extrusion process mold temperature be 445~455 DEG C, aluminium alloy cast rod in a mold squeeze
Pressure speed is 10~12m/min, and aluminum alloy sheet material surface temperature is 520~530 DEG C during extrusion forming；
D, the inside addition embossing device by aluminum alloy extruder, are closed by the knurling rolls on embossing device to the aluminium after extruding
Golden plate surface applies pressure so that the surface of aluminum alloy plate materials produces horizontal lines, by the aluminium by knurling rolls after embossed
Sheet alloy carries out air-cooled so that aluminum alloy plate materials reach required solid solubility, it is ensured that the mechanical property of aluminum alloy plate materials, wherein
Air-cooled cooldown rate is controlled in 1.50~2.48 DEG C/S；
E, the aluminum alloy plate materials after air-cooled are carried out with tension straingtening, i.e., on the aluminum alloy plate materials application length direction after air-cooled
Load so that aluminum alloy plate materials are 0.7~1.0% in the deflection of length direction, load keeps unloading after 15~30S；
F, the aluminum alloy plate materials after tension straingtening are drawn in the net in advance within 30~36h；
G, aluminum alloy sheet material surface is punched out processing；
H, punching is handled after aluminum alloy plate materials be fixed on and draw in the net to be drawn in the net in frock, the speed of drawing in the net of aluminum alloy plate materials is
6mm/s；
I, will draw in the net after aluminum alloy plate materials carry out aging strengthening model, aging temp be 150~200 DEG C, aging time be 2~
7h。
2. aluminium alloy pedal manufacture craft as claimed in claim 1, it is characterised in that the group of aluminium alloy stock in step A
Divide and mass fraction ratio is respectively：Si：0.33~0.38%, Fe：0.2%th, Cu：0.04%th, Mg：0.51~0.56%, Cr：
0.05%th, Zn：0.04%th, Mn：0.04%th, Ti：0.05%th, Sc：0.01%th, Al：Surplus, each component content value and for 100%.
3. aluminium alloy pedal manufacture craft as claimed in claim 2, it is characterised in that aluminium alloy stock founding in step B
During aluminium alloy stock while melting while remove melt in miscellaneous slag and gas.
4. aluminium alloy pedal manufacture craft as claimed in claim 3, it is characterised in that aluminium alloy cast rod pre-add in step C
Hot temperature is 150~300 DEG C, and preheating time is 10~20min.
5. aluminium alloy pedal manufacture craft as claimed in claim 4, it is characterised in that aluminum alloy plate materials punching in step G
Size be long 105mm, width 4.5mm.
6. aluminium alloy pedal manufacture craft as claimed in claim 5, it is characterised in that draw in the net preceding aluminium alloy plate in step H
The size of material is 236mm*6270mm, draws in the net rear aluminum alloy plate materials size for 600mm*6000mm.
7. aluminium alloy pedal manufacture craft as claimed in claim 6, it is characterised in that the aluminium alloy after being drawn in the net in step I
Sheet material aging heat treatment aging temp is 185 DEG C, and aging time is 5h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710497392.0A CN107297396B (en) | 2017-06-26 | 2017-06-26 | A kind of aluminium alloy foot pedal manufacture craft |
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|---|---|---|---|
| CN201710497392.0A CN107297396B (en) | 2017-06-26 | 2017-06-26 | A kind of aluminium alloy foot pedal manufacture craft |
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Family
ID=60134977
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| CN107829002A (en) * | 2017-11-14 | 2018-03-23 | 辽宁忠旺集团有限公司 | A kind of production technology of solar energy aluminium alloy photovoltaic bracket |
| CN108001102A (en) * | 2017-12-05 | 2018-05-08 | 山东点石环保科技有限公司 | A kind of interior wall plate surface treatment method |
| CN108971907A (en) * | 2018-10-17 | 2018-12-11 | 滁州岳众汽车零部件有限公司 | A kind of height tune machining molding technique |
| CN109913715A (en) * | 2019-04-16 | 2019-06-21 | 吴江市新申铝业科技发展有限公司 | It is a kind of for producing the preparation method of the aluminium alloy extrusions of solar energy frame |
| CN111575512A (en) * | 2020-06-12 | 2020-08-25 | 包头市亿江铝业有限公司 | Aluminum alloy bar and production method thereof |
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| CN109913715A (en) * | 2019-04-16 | 2019-06-21 | 吴江市新申铝业科技发展有限公司 | It is a kind of for producing the preparation method of the aluminium alloy extrusions of solar energy frame |
| CN111575512A (en) * | 2020-06-12 | 2020-08-25 | 包头市亿江铝业有限公司 | Aluminum alloy bar and production method thereof |
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