CN109182852A - A kind of preparation method and profile of 5 line aluminium alloy of high brightness polishing profile - Google Patents
A kind of preparation method and profile of 5 line aluminium alloy of high brightness polishing profile Download PDFInfo
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- CN109182852A CN109182852A CN201810852920.4A CN201810852920A CN109182852A CN 109182852 A CN109182852 A CN 109182852A CN 201810852920 A CN201810852920 A CN 201810852920A CN 109182852 A CN109182852 A CN 109182852A
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- 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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Abstract
The invention discloses the preparation methods and profile of a kind of 5 line aluminium alloy of high brightness polishing profile, the preparation method includes: melting aluminium ingot, and each alloying component is added according to the proportion of 5 line aluminium alloys, is cast as aluminium bar, aluminium bar is heated to molten condition and is kept the temperature, then in nitrogen atmosphere, by aluminium alloy extruded at aluminum profile, then by aluminum profile under 175 DEG C of environment constant temperature keep 7h after, aluminum profile is mechanically polished, wet-tumbling is carried out again, is cleaned, and obtains profile finished product after dry.The method is without any cold working, only pass through aging strengthening model, the power performance requirement that can reach, be even more than 6063,6463 by 5 line aluminium alloy of high brightness prepared by preparation method of the present invention polishing profile, has important practical significance and huge market prospects.
Description
Technical field
The present invention relates to aluminium alloy extruded fields, and in particular to a kind of preparation of 5 line aluminium alloy of high brightness polishing profile
Method and profile.
Background technique
It is raw that the processing technology of mechanical polishing plus chemical polishing after squeezing is widely used on current high-end decoration aluminium profile market
The aluminum profile that appearance has " mirror surface " decorative effect is produced, the fields such as house ornamentation, automobile interior decoration, electronic product exterior trim are widely used in.6
Line aluminium alloy, especially 6063,6,463 two kind of aluminium alloy have outstanding outer after good processability, certain intensity and oxidation
Performance is seen, is the material first of such product.But since trade protectionism is prevailing, aluminium that Countries produce China
Impose sanction duty in the outlet of product, especially 6 line aluminium alloy products.To continue to open up external high-end market, it is badly in need of developing
Another kind polishing profile, 5050 aluminium alloys polishing profile are a kind of substitutes of 6 line aluminium alloy profiles, but due to 5050 aluminium
The content of magnesium of alloy profile be 1.2-1.24%, exist research and development difficulty it is big, mechanical property is lower, Surface of profile brightness is lower
Etc. technical problems therefore need to improve technique, develop the product of alternative 6 line aluminium alloy profile, avoid sanction duty.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of 5 line aluminium alloys of high brightness
Polish the preparation method and profile of profile, it is intended to solve in the prior art.
In order to achieve the above object, this invention takes following technical schemes:
A kind of preparation method of 5 line aluminium alloy of high brightness polishing profile, comprising the following steps:
S001. founding: melting aluminium ingot is added each alloying component according to the proportion of 5 line aluminium alloys, is cast as aluminium bar;
S002. Homogenization Treatments: aluminium bar is heated to molten condition and is kept the temperature;
S003. extrusion forming: aluminum profile will be squeezed by the molten state aluminium alloy of Homogenization Treatments in nitrogen atmosphere;
S004. ageing treatment: by the aluminum profile after extrusion forming, constant temperature keeps 7h under 175 DEG C of environment;
S005. it mechanically polishes: the aluminum profile after ageing treatment being placed on burnishing machine and is polished;
S006. chemical polishing: being placed in wet-tumbling in chemical polishing bath for the aluminum profile after mechanical polishing, cleaning, obtains after dry
Profile finished product.
5 line aluminium alloy of high brightness polishes the preparation method of profile, is first heated to aluminium ingot in the step S001
730~750 DEG C of molten conditions, then 730~740 DEG C are adjusted the temperature to, each alloying component is added according to the proportion of 5 line aluminium alloys,
Form aluminium bar.
In the preparation method of 5 line aluminium alloy of the high brightness polishing profile, 5 line aluminium alloy includes following weight
The component of part: Si 0.34%~0.38%;Fe 0.18%;Cu 0.04%~0.07%;Mn 0.03%;Mg 1.2%~1.24%;Cr
0.005%;Ti 0.05%;Impurity 0.05%;Surplus is Al.
The preparation method of 5 line aluminium alloy of high brightness polishing profile, in the step S002 Homogenization Treatments be
Constant temperature keeps 6h under 520 DEG C of environment.
5 line aluminium alloy of high brightness polishes the preparation method of profile, in the step S003 during extrusion forming
Quenching intensity is greater than 240 DEG C/min.
The preparation method of 5 line aluminium alloy of high brightness polishing profile, in the step S003 mold temperature be 470~
490 DEG C, extrusion cylinder temperature is 400~440 DEG C, and extrusion speed is 10~16m/min.
5 line aluminium alloy of high brightness polishes the preparation method of profile, chemical polishing bath temperature in the step S006
It is 90~95 DEG C, the chemical polishing time is 2~4min.
A kind of 5 line aluminium alloy of high brightness polishing profile, the profile are polished by above-mentioned 5 line aluminium alloy of high brightness
It is prepared by the preparation method of profile.
The utility model has the advantages that
The present invention provides the preparation methods and profile of a kind of 5 line aluminium alloy of high brightness polishing profile, close performance, breach biography
5050 aluminium alloy extrusions of uniting cause mechanical property lower due to not heat-treatable strengthened, the low limitation of surface brightness.Not into
It, can by high brightness aluminium alloy prepared by the present invention polishing profile only by aging strengthening model in the case where any cold working of row
To reach, even more than 6063,6463 mechanical property requirements.The 5 line aluminium alloy polishing profile has brightness height, surface
Burr particle is few and excellent comprehensive performance, the high brightness aluminium alloy extrusions of preparation have excellent comprehensive.
Detailed description of the invention
Fig. 1 is the precipitated phase fractograph of 5 line aluminium alloy profiles of 520 DEG C of heat preservation 6h Homogenization Treatments.
Fig. 2 is that 5 line aluminium alloys without Homogenization Treatments polish profile precipitated phase fractograph.
Fig. 3 is the precipitated phase fractograph of 5 line aluminium alloy profiles of 470 DEG C of heat preservation 6h Homogenization Treatments.
Fig. 4 is the precipitated phase fractograph of 5 line aluminium alloy profiles of 500 DEG C of heat preservation 6h Homogenization Treatments.
Specific embodiment
The present invention provides the preparation method and profile of a kind of 5 line aluminium alloy of high brightness polishing profile, of the invention to make
Purpose, technical solution and effect are clearer, clear, as follows in conjunction with drawings and embodiments further specifically to the present invention
It is bright.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not intended to limit the present invention.
The present invention provides a kind of preparation methods of 5 line aluminium alloy of high brightness polishing profile, comprising the following steps:
S001. founding: melting aluminium ingot is added alloy according to the proportion of 5 line aluminium alloys, is cast as aluminium bar;
S002. Homogenization Treatments: aluminium bar is heated to molten condition and is kept the temperature;
S003. extrusion forming: aluminum profile will be squeezed by the molten state aluminium alloy of Homogenization Treatments in nitrogen atmosphere;
S004. ageing treatment: by the aluminum profile after extrusion forming, constant temperature keeps 7h under 175 DEG C of environment;
S005. it mechanically polishes: the aluminum profile after ageing treatment being placed on burnishing machine and is polished;
S006. chemical polishing: being placed in wet-tumbling in chemical polishing bath for the aluminum profile after mechanical polishing, cleaning, obtains after dry
Profile finished product.
In mechanical polishing process, polishing wheel diameter is 300~400mm, and polishing velocity is 350~500r/min, back and forth
Polishing number 2~4 times removes aluminium shape surface burr particle, improves the brightness of aluminium shape surface.
During extrusion forming, it is persistently full of section bar mold discharge port using nitrogen, protects aluminum profile, reduces aluminum profile
Surface spikes particle is abnormal, improves Surface of profile quality.
The 5 line aluminium alloy polishing profile uses above-mentioned preparation method, is not required to carry out any cold working, only passes through timeliness heat
Processing can get power performance requirement more than 6063,6463, have good processability, intensity and the high feature of brightness.
Specifically, aluminium ingot is first heated to 730~750 DEG C of molten conditions in the step S001, then adjusts the temperature to 730
~740 DEG C, each alloying component is added according to the proportion of 5 line aluminium alloys, forms aluminium bar.Suitable casting temperature can make molten
Alloy is mutually dissolved as far as possible in the aluminium alloy of state, promotes Mechanical Properties of Aluminum Alloys;Above-mentioned temperature range can be such that founding effect reaches most
It is good.
Specifically, in 5 line aluminium alloy of high brightness polishing profile preparation method, 5 line aluminium alloys include
The component of following parts by weight: Si 0.34%~0.38%;Fe 0.18%;Cu 0.04%~0.07%;Mn 0.03%;Mg 1.2%~
1.24%;Cr 0.005%;Ti 0.05%;Impurity 0.05%;Surplus is Al.
A small amount of Cu element is added in aluminium alloy, can promote the mirror finish effect of aluminium alloy;It adds simultaneously a certain amount of
Si element, reduces the excess quantity of Mg element, and enables aluminum alloy to form Mg2Si alloy phase makes originally not heat-treatable strengthened 5
It is that alloy has the heat-treatable strengthened effect in part, promotes the mechanical property of aluminium alloy.The content of strict control Fe element is reduced
Coarse AlFe phase and AlFeMgSi phase in alloy reduce extrusion deformation resistance and promote surface treatment quality;Meanwhile controlling Mg member
Element content, reduce extrusion process in metal deformation resistance, make its be fully achieved 6 be alloy extrudability, can extrude life
Produce complicated section structure.The coarse Al-Mg phase in alloy heterogeneous microstructure is reduced simultaneously, is aluminum profile in surface treatment work
Sequence produces mirror effect and carries out basis.
In one preferred embodiment, the preparation method of 5 line aluminium alloy of high brightness polishing profile, in the step S002
Homogenization Treatments are that constant temperature keeps 6h under 520 DEG C of environment.The purpose of Homogenization Treatments is that grain boundaries are continuous coarse by second
Inversion of phases is the tiny alloy phase of dispersion, is conducive to subsequent extrusion operation, and promote surface treatment effect.Alloy occurred
Under the premise of burning, homogenization temperature is higher, and the second inversion of phases is more abundant.By verifying repeatedly, it is best that 520 DEG C, which keep the temperature 6 hours,
Homogenization temperature.
Fig. 1~4 are please referred to, coarse alloy phase obviously occur without 5 line aluminium alloy profiles of Homogenization Treatments, it is unfavorable
In subsequent extrusion operation, mechanical property and surface treatment effect are influenced;And 5 systems of 6h Homogenization Treatments are kept the temperature compared to 470 DEG C
5 line aluminium alloy profiles of aluminium alloy extrusions and 500 DEG C of heat preservation 6h Homogenization Treatments, the 5 of 520 DEG C of heat preservation 6h Homogenization Treatments are aluminium
The alloy of alloy profile is mutually more dispersed and tiny, is conducive to subsequent extrusion operation, more efficiently promotes surface treatment effect.
Preferably, quenching intensity is greater than 240 DEG C/min during extrusion forming in the step S003.Extrusion forming process
In, in order to be dissolved alloy mutually as far as possible, therefore refining alloy phase under the premise of not making alloy that burning occur, needs as far as possible
Using biggish quenching intensity, quenching intensity should be controlled greater than 240 DEG C/min.
Specifically, mold temperature is 470~490 DEG C in the step S003, and extrusion cylinder temperature is 400~440 DEG C, is squeezed
Speed is 10~16m/min.The temperature range of above-mentioned mold and extrusion cylinder both can guarantee soluble phase constitution not from solid solution
It is precipitated or is presented short grained disperse educt, and is able to achieve crystal grain refinement, reduces resistance of deformation, reduce extruding force and acts on work
Load on mold, metal is bonded on tool when preventing from squeezing, and deteriorates product surface quality.And above-mentioned extrusion speed range,
Extruding metal flow can be made uniform, promote the mechanical property of product.
Specifically, chemical polishing bath temperature is 90~95 DEG C in the step S006, and the chemical polishing time is 2~4min.
Wet-tumbling use common aluminium alloy polishing fluid, to aluminum profile carry out chemical polishing, above-mentioned chemical polishing bath temperature range and
Polishing time can be improved polishing effect, improve the brightness of aluminium shape surface.
The present invention provides a kind of 5 line aluminium alloys of high brightness to polish profile, and the profile passes through above-mentioned high brightness 5
Line aluminium alloy polishes the preparation method preparation of profile.
5 line aluminium alloy of the high brightness polishing profile and 6063(national standard T6), 6463 being made by preparation method of the present invention
(national standard T6) and 5050(national standard H38) mechanical property comparison see the table below:
5 line aluminium alloy of the high brightness polishing profile that is made it can be seen from table by preparation method of the present invention and common
5050 line aluminium alloys (national standard H38) are compared, and elongation percentage, tensile strength and yield strength are enhanced, and three mechanical properties
Be above 6063(national standard T6), 6463(national standard T6) aluminium alloy.
Further, 5 line aluminium alloy of high brightness that preparation method of the present invention is made polishes profile, and surface gloss can
Reach 500GS or more, hardness HW11~13, oxide thickness are 3~5 μm;Without any cold working, only lead to
Overaging heat treatment, 5050 new preparation process can achieve the mechanical property requirements of even more than 6063,6463.
For a kind of preparation method and type of 5 line aluminium alloy of high brightness polishing profile provided by the invention further elucidated above
Material provides following examples:
Embodiment 1
A kind of 5 line aluminium alloy of high brightness polishing profile, comprises the following components in parts by weight: Si 0.34%;Fe 0.18%;Cu
0.05%;Mn 0.03%;Mg 1.22%;Cr 0.005%;Ti 0.05%;Impurity 0.05%;Surplus is Al.
Described 5 line aluminium alloy of the high brightness polishing profile preparation method the following steps are included:
Founding: being first heated to 730 DEG C of molten conditions for aluminium ingot, then adjust the temperature to 735 DEG C, and each conjunction is added according to above-mentioned proportion
Golden ingredient, forms aluminium bar.
Homogenization Treatments: aluminium bar is heated to molten condition constant temperature under 520 DEG C of environment and keeps 6h;
Extrusion forming: control quenching intensity is 250 DEG C/min, will pass through the molten state aluminium alloy of Homogenization Treatments in nitrogen atmosphere
In, aluminum profile is squeezed into 15m/min speed, mold temperature is 470 DEG C, and extrusion cylinder temperature is 440 DEG C;
Ageing treatment: by the aluminum profile after extrusion forming, constant temperature keeps 7h under 175 DEG C of environment;
Mechanical polishing: it is on the burnishing machine of 300mm that the aluminum profile after ageing treatment, which is placed in polishing wheel diameter, and polishing wheel is with speed
Degree is 400r/min, and aluminium shape surface back and forth polishes 4 times;
Chemical polishing: it is wet-tumbling 2min in 95 DEG C of chemical polishing baths that the aluminum profile mechanically polished, which is placed in temperature, is cleaned,
Profile finished product is obtained after drying.
Profile is polished by 5 line aluminium alloy of high brightness of the implementation case preparation, surface gloss can reach 515GS, firmly
Spend HW11, oxide thickness is 3 μm.
Embodiment 2
A kind of 5 line aluminium alloy of high brightness polishing profile, comprises the following components in parts by weight: Si 0.35%;Fe 0.18%;Cu
0.04%;Mn 0.03%;Mg 1.24%;Cr 0.005%;Ti 0.05%;Impurity 0.05%;Surplus is Al.
Described 5 line aluminium alloy of the high brightness polishing profile preparation method the following steps are included:
Founding: being first heated to 735 DEG C of molten conditions for aluminium ingot, then adjust the temperature to 740 DEG C, and each conjunction is added according to above-mentioned proportion
Golden ingredient, forms aluminium bar.
Homogenization Treatments: aluminium bar is heated to molten condition constant temperature under 520 DEG C of environment and keeps 6h;
Extrusion forming: control quenching intensity is 240 DEG C/min, will pass through the molten state aluminium alloy of Homogenization Treatments, in nitrogen atmosphere
In enclosing, aluminum profile is squeezed into 10m/min speed, mold temperature is 490 DEG C, and extrusion cylinder temperature is 400 DEG C;
Ageing treatment: by the aluminum profile after extrusion forming, constant temperature keeps 7h under 175 DEG C of environment;
Mechanical polishing: it is on the burnishing machine of 350mm that the aluminum profile after ageing treatment, which is placed in polishing wheel diameter, and polishing wheel is with speed
Degree is 350r/min, and aluminium shape surface back and forth polishes 3 times;
Chemical polishing: it is wet-tumbling 3min in 92 DEG C of chemical polishing baths that the aluminum profile mechanically polished, which is placed in temperature, is cleaned,
Profile finished product is obtained after drying.
Profile is polished by 5 line aluminium alloy of high brightness of the implementation case preparation, surface gloss can reach 510GS, firmly
Spend HW13, oxide thickness is 4 μm.
Embodiment 3
A kind of 5 line aluminium alloy of high brightness polishing profile, comprises the following components in parts by weight: Si 0.38%;Fe 0.18%;Cu
0.07%;Mn 0.03%;Mg 1.24%;Cr 0.005%;Ti 0.05%;Impurity 0.05%;Surplus is Al.
Described 5 line aluminium alloy of the high brightness polishing profile preparation method the following steps are included:
Founding: being first heated to 750 DEG C of molten conditions for aluminium ingot, then adjust the temperature to 730 DEG C, and each conjunction is added according to above-mentioned proportion
Golden ingredient, forms aluminium bar.
Homogenization Treatments: aluminium bar is heated to molten condition constant temperature under 520 DEG C of environment and keeps 6h;
Extrusion forming: control quenching intensity is 240 DEG C/min, will pass through the molten state aluminium alloy of Homogenization Treatments, in nitrogen atmosphere
In enclosing, aluminum profile is squeezed into 16m/min speed, mold temperature is 480 DEG C, and extrusion cylinder temperature is 420 DEG C;
Ageing treatment: by the aluminum profile after extrusion forming, constant temperature keeps 7h under 175 DEG C of environment;
Mechanical polishing: it is on the burnishing machine of 500mm that the aluminum profile after ageing treatment, which is placed in polishing wheel diameter, and polishing wheel is with speed
Degree is 500r/min, and aluminium shape surface back and forth polishes 2 times;
Chemical polishing: it is wet-tumbling 4min in 90 DEG C of chemical polishing baths that the aluminum profile mechanically polished, which is placed in temperature, is cleaned,
Profile finished product is obtained after drying.
Profile is polished by 5 line aluminium alloy of high brightness of the implementation case preparation, surface gloss can reach 500GS, firmly
Spend HW12, oxide thickness is 5 μm.
It, can according to the technique and scheme of the present invention and invention it is understood that for those of ordinary skills
Design is subject to equivalent substitution or change, and all these changes or replacement all should belong to the protection of appended claims of the invention
Range.
Claims (8)
1. a kind of preparation method of 5 line aluminium alloy of high brightness polishing profile, which comprises the following steps:
S001. founding: melting aluminium ingot is added each alloying component according to the proportion of 5 line aluminium alloys, is cast as aluminium bar;
S002. Homogenization Treatments: aluminium bar is heated to molten condition and is kept the temperature;
S003. extrusion forming: aluminum profile will be squeezed by the molten state aluminium alloy of Homogenization Treatments in nitrogen atmosphere;
S004. ageing treatment: by the aluminum profile after extrusion forming, constant temperature keeps 7h under 175 DEG C of environment;
S005. it mechanically polishes: the aluminum profile after ageing treatment being placed on burnishing machine and is polished;
S006. chemical polishing: being placed in wet-tumbling in chemical polishing bath for the aluminum profile after mechanical polishing, cleaning, obtains after dry
Profile finished product.
2. the preparation method of 5 line aluminium alloy of high brightness polishing profile according to claim 1, which is characterized in that the step
Aluminium ingot is first heated to 730~750 DEG C of molten conditions in rapid S001, then adjusts the temperature to 730~740 DEG C, according to 5 line aluminium alloys
Proportion each alloying component is added, form aluminium bar.
3. the preparation method of profiles, feature are polished with 2 described in any item 5 line aluminium alloys of high brightness according to claim 1
It is, 5 line aluminium alloy comprises the following components in parts by weight: Si 0.34%~0.38%;Fe 0.18%;Cu 0.04%~
0.07%;Mn 0.03%;Mg 1.2%~1.24%;Cr 0.005%;Ti 0.05%;Impurity 0.05%;Surplus is Al.
4. the preparation method of 5 line aluminium alloy of high brightness polishing profile according to claim 1, which is characterized in that the step
Homogenization Treatments are that constant temperature keeps 6h under 520 DEG C of environment in rapid S002.
5. the preparation method of 5 line aluminium alloy of high brightness polishing profile according to claim 1, which is characterized in that the step
Quenching intensity is greater than 240 DEG C/min during extrusion forming in rapid S003.
6. the preparation method of 5 line aluminium alloy of high brightness polishing profile according to claim 1, which is characterized in that the step
Mold temperature is 470~490 DEG C in rapid S003, and extrusion cylinder temperature is 400~440 DEG C, and extrusion speed is 10~16m/min.
7. the preparation method of 5 line aluminium alloy of high brightness polishing profile according to claim 1, which is characterized in that the step
Chemical polishing bath temperature is 90~95 DEG C in rapid S006, and the chemical polishing time is 2~4min.
8. a kind of 5 line aluminium alloy of high brightness polishes profile, which is characterized in that the profile passes through any in claim 1~7
The preparation method preparation of 5 line aluminium alloy of high brightness polishing profile described in.
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CN111663025A (en) * | 2020-06-09 | 2020-09-15 | 福耀汽车铝件(福建)有限公司 | Aging treatment method of aluminum alloy bright decorative strip, vehicle body bright decorative strip and aging equipment |
CN113199210A (en) * | 2021-04-22 | 2021-08-03 | 张家港杰茂铝业有限公司 | Manufacturing method of high-precision ultrathin section filled with heat-insulation aluminum alloy |
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CN111057917A (en) * | 2019-12-31 | 2020-04-24 | 东莞市润华铝业有限公司 | Stainless steel-colored aluminum alloy and preparation method thereof |
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CN113199210B (en) * | 2021-04-22 | 2023-02-14 | 张家港杰茂铝业有限公司 | Manufacturing method of high-precision ultrathin section filled with heat-insulation aluminum alloy |
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