CN108796310A - A kind of high-strength aluminum alloy integration casting window frame - Google Patents
A kind of high-strength aluminum alloy integration casting window frame Download PDFInfo
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- CN108796310A CN108796310A CN201810604994.6A CN201810604994A CN108796310A CN 108796310 A CN108796310 A CN 108796310A CN 201810604994 A CN201810604994 A CN 201810604994A CN 108796310 A CN108796310 A CN 108796310A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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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
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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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
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Abstract
The present invention relates to metal working technical areas, and in particular to a kind of high-strength aluminum alloy integration casting window frame.According to mass fraction, frame material includes following chemical constituent：Mg 0.45-0.80%, Fe 1.2-1.5%, Ti 0.24-0.28%, Zn 0.03-0.05%, Cu 0.13-0.21%, Mn 0.03-0.05%, Cr 0.03-0.07%, Re 0.1-0.3%, surplus are Al and inevitable impurity, and impurity is no more than 0.05%.Wherein, the ingredient of Re and its mass fraction are：La 18.9%, Nd 19.5%, Sm 20.4%, Dy 18.9%, Ce 22.3%.Intensity of aluminum alloy that the window frame uses is high, hardness is big, wear-resisting property is good, and window frame is prepared using integrated forging type, and compressive resistance and bend-resistance performance are very outstanding, it is not easy to deform.
Description
Technical field
The present invention relates to metal working technical areas, and in particular to a kind of high-strength aluminum alloy integration casting window frame.
Background technology
Aluminium alloy is most widely used one kind non-ferrous metal structural material in industry, in Aeronautics and Astronautics, automobile, machinery
It has been widely applied in manufacture, ship and chemical industry.The rapid development of industrial economy, the demand to aluminum alloy junction component increasingly increase
More, aluminium alloy is to apply most one of alloys at present.
Aluminium alloy and steel alloy are most popular alloy materials, and aluminium alloy is compared with steel alloy, the density of aluminium alloy
It is low, but intensity is relatively high, and near or above high-quality steel, the plasticity of aluminium alloy is preferable, can be processed into various proximate matters, has excellent
Electric conductivity, thermal conductivity and corrosion stability.Because of these features, aluminium alloy is widely used general in door and window industry, is commonly used for making
Standby window frame structure.
On the one hand, relatively poor with steel due to the hardness of aluminium alloy, it is accordingly used in after preparing window frame, the wearability of window frame
Can and adhesion strength it is also relatively poor, therefore white surface is easy to be formed cut, abrasion and recessed to door and window in the long-term use
Equivalent damage is cheated, although these damages are smaller on the influence of the structural stability of window frame, the aesthetics of window frame can be caused very big
It influences.
On the other hand, conventional aluminum alloy window frame be by surface-treated aluminium alloy extrusions, through blanking, punching, groove milling,
The processing technologys such as tapping, making face is fabricated to sash member, then is combined together with connector, sealing material and opening and closing Hardware fitting
It is assembled.This window frame using the mode of assembling because connect, and the intensity of each structural attachments is also relatively poor, therefore
Door and window structure is easily damaged deformation when being by higher impact force or pressure effect.
Chinese invention patent application number CN201510628002.X discloses a kind of preparation of high-strength corrosion-resisting aluminium alloy
Technique and high-strength corrosion-resisting aluminium alloy, the aluminum alloy materials have very outstanding intensity and weather resistance, anti-oxidant corrosion resistant
Better performances are lost, the manufacturing of this structure of door and window is suitable for, but the hardness of material is relatively low, therefore be easy to be ground
Damage.
Number of patent application CN201720948408.0 discloses a kind of aluminium alloy door-window, and the structure of the door and window is firm, close
Good, the resistance to high wind pressure of envelope property, sound insulation, heat insulation effect are preferable, but the intensity relative deficiency of door and window structure, are rushed during use
The effect of hitting is easily deformed.
Invention content
For problems of the prior art, the present invention provides a kind of high-strength aluminum alloy integrations to cast window frame,
The type window frame uses high rigidity, and the aluminium alloy of high intensity is prepared, and is manufactured using integrated foundry engieering, compressive resistance and resistance to
Buckling performance is very outstanding, it is not easy to deform.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of high-strength aluminum alloy integration casting window frame, according to mass fraction, frame material includes following chemical constituent：
Mg 0.45-0.80%, Fe 1.2-1.5%, Ti 0.24-0.28%, Zn 0.03-0.05%, Cu 0.13-0.21%, Mn
0.03-0.05%, Cr 0.03-0.07%, Re 0.1-0.3%, surplus are that Al and inevitable impurity, impurity are no more than
0.05%.
Preferably, according to mass fraction, frame material includes following chemical constituent：Mg 0.5-0.7%, Fe 1.3-
1.4%, Ti 0.25-0.27%, Zn 0.04-0.05%, Cu 0.15-0.19%, Mn 0.04-0.05%, Cr 0.04-
0.06%, Re 0.15-0.21%, surplus are Al and inevitable impurity, and impurity is no more than 0.05%.
It is further preferred that according to mass fraction, frame material includes following chemical constituent：Mg 0.6%, Fe
1.35%, Ti 0.26%, Zn 0.04%, Cu 0.17%, Mn 0.04%, Cr 0.05%, Re 0.19%, surplus be Al and
Inevitable impurity, impurity are no more than 0.05%.
In the present invention, the ingredient and its mass fraction of Re are：La 18.9%, Nd 19.5%, Sm 20.4%, Dy
18.9%, Ce 22.3%.
The preparation method of window frame provided by the invention includes the following steps：
(1) wax injector is used to suppress wax-pattern and sprue cup, cross gate, sprue and ingate according to window frame structure system, and
To wax-pattern repairing type and group type；Multilayer hanging sand is carried out to the wax-pattern after group type as bonding agent using waterglass；Then it dewaxes
And drying, formwork baking-curing in chamber type electric resistance furnace after drying, baking temperature are 250-260 DEG C, with furnace cooling after baking-curing
But sand mold is obtained；
(2) aluminium ingot and corresponding intermediate alloy are added to according to corresponding mass ratio in vacuum melting furnace, with 750-780 DEG C
Temperature melt to obtain alloy molten solution, alloy molten solution is put into refining heat preserving furnace, it is molten to alloy according to required mass ratio
Refining agent, refining aids and rare earth element are added in liquid, refinery by de-gassing is carried out by the mixed gas of nitrogen and chlorine first, then
It adds grain refiner and carries out crystal grain refinement processing, then filtering and removing slag；
(3) alloy molten solution after refining and filtering and removing slag is poured into sand mold, casting process uses the side of pressure regulation cast
Formula, pouring temperature are 750-790 DEG C, after casting cooling and solidifying, carry out clear shell using waterpower, are used in combination blowing machine to carry out blast, obtain
To window frame casting；
(4) window frame casting is heat-treated, window frame casting is sent in holding furnace first, heat 240-260 DEG C, protected
Temperature processing 8-10h, then continues to window frame casting being heated to 480-530 DEG C, keeps the temperature 24-36h, completes to carry out at homogenization
It manages, is cooled to room temperature window frame casting after Homogenization Treatments, and carry out repairing type and surface polishing；
(5) window frame casting is sent in holding furnace after the completion of repairing type polishing and is preheated, then window frame casting is dissolved
Quenching, solution hardening temperature are 530-540 DEG C, and the solution hardening time is 30-35min, and ageing treatment is carried out after solution hardening, when
After effect processing, required window frame is obtained.
Wherein, the baking-curing time of sand mold is 3-5h in chamber type electric resistance furnace in step (1).
The dosage of refining agent is the 4-5% of alloy molten solution quality in step (2), and the component in refining agent includes：Sodium chloride
17 parts, 15 parts of lithium chloride, 7 parts of sodium fluoride, 12 parts of potassium fluotitanate, 15 parts of sodium sulphate, 12 parts of potassium carbonate.
Refining aids are gallium nitride and germanium dioxide 3 in step (2):The dosage of the mixture of 1 mass ratio, refining aids is
The 10% of refining agent quality.
Grain refiner in step (2) is Al-Ti-B-C grain refiners, and Ti content is 35% in grain refiner,
Boron content is 5%；The dosage of grain refiner is the 0.15% of alloy molten solution quality.
Ageing process includes two steps in step (5), and the first step is with 120 DEG C of temperature ageing treatment 4-5h, second step
With 175 DEG C of temperature ageing treatment 7-8h.
The present invention has following advantageous effect：
In aluminum alloy plate materials provided by the invention, aluminium alloy is to handle to obtain by special element proportioning and processing technology
, which has very outstanding intensity and hardness, therefore, the intensity of the aluminum alloy plate materials of generation is high, wear-resisting property and
Adhesion strength is very good, can be applied to multiple industrial circles.
Wherein, Mn, Ru and Mo element used in alloy can form special crystalline phase in the alloy, and with W element shapes
At synergistic effect, the hardness of aluminium alloy is greatly improved, to promote the wear-resisting property and adhesion strength of aluminium alloy.
Re is containing five kinds of rare earth elements of La, Pr, Sm, Ho, Ce, and the physicochemical properties of rare earth element are active, energy and aluminium
The rare earth compound of the impurity elements such as hydrogen, oxygen, manganese, zinc, chromium in aluminium alloy reaction generation high-melting-point, high stability, closes aluminium
Golden liquid has deep purifying effect, can eliminate injury of the impurity element to mechanical property.In addition, the rare earth compound formed has
The feature that fusing point is high, hardness is high and thermal stability is good；Phase boundary and crystal boundary can be improved in phase boundary and crystal boundary in rare earth compound segregation
Intensity and creep resisting ability improve the intensity and hardness of aluminum alloy plate materials.The lot of experiments of inventor proves, for improving
For the hardness and strength of aluminium alloy, the effect for adding five kinds of rare earth elements of La, Pr, Sm, Ho, Ce is a kind of or several than addition
The effect of kind rare earth element is all more preferable, and it was found that uses La15.2%, Pr 19.1%, Sm 22.4%, Ho 20.9%, Ce
22.4% quality proportioning, the property that can be generated higher than other proportionings promote effect.
In addition, in refining process, especially refining agent, refining aids and rare earth element are added simultaneously, are because of refining
Auxiliary agent not only can play catharsis to alloy molten solution together with refining agent, but also can be generated with rare earth element and cooperate with work
With to improve the performance boost effect of rare earth element.
Specific implementation mode
The specific implementation mode of the present invention is further described with reference to embodiment, following embodiment is only used for more
Technical scheme of the present invention is clearly demonstrated, and not intended to limit the protection scope of the present invention.
Embodiment 1
A kind of high-strength aluminum alloy integration casting window frame, according to mass fraction, frame material includes following chemical constituent：
Mg 0.45%, Fe 1.2%, Ti 0.24%, Zn 0.03%, Cu 0.13%, Mn 0.03%, Cr 0.03%, Re
0.1%, surplus is Al and inevitable impurity, and impurity is no more than 0.05%.
The ingredient and its mass fraction of Re be：La 18.9%, Nd 19.5%, Sm 20.4%, Dy 18.9%, Ce
22.3%.
The preparation method of window frame provided by the invention includes the following steps：
(1) wax injector is used to suppress wax-pattern and sprue cup, cross gate, sprue and ingate according to window frame structure system, and
To wax-pattern repairing type and group type；Multilayer hanging sand is carried out to the wax-pattern after group type as bonding agent using waterglass；Then it dewaxes
And drying, it is dry after formwork baking-curing in chamber type electric resistance furnace, baking temperature is 250 DEG C, after baking-curing furnace cooling obtain
To sand mold；
(2) aluminium ingot and corresponding intermediate alloy are added to according to corresponding mass ratio in vacuum melting furnace, with 750 DEG C of temperature
Degree melting obtains alloy molten solution, alloy molten solution is put into refining heat preserving furnace, according to required mass ratio into alloy molten solution
Refining agent, refining aids and rare earth element is added, refinery by de-gassing is carried out by the mixed gas of nitrogen and chlorine first, then adds again
Enter grain refiner and carry out crystal grain refinement processing, then filtering and removing slag；
(3) alloy molten solution after refining and filtering and removing slag is poured into sand mold, casting process uses the side of pressure regulation cast
Formula, pouring temperature are 750 DEG C, after casting cooling and solidifying, carry out clear shell using waterpower, are used in combination blowing machine to carry out blast, obtain window
Frame casting；
(4) window frame casting is heat-treated, window frame casting is sent in holding furnace first, heat 240 DEG C, at heat preservation
Reason 8h then continues to window frame casting being heated to 480 DEG C, keeps the temperature for 24 hours, the equal Homogenization Treatments of completion progress, after Homogenization Treatments
Window frame casting is cooled to room temperature, and carries out repairing type and surface polishing；
(5) window frame casting is sent in holding furnace after the completion of repairing type polishing and is preheated, then window frame casting is dissolved
Quenching, solution hardening temperature are 530 DEG C, and the solution hardening time is 30min, and ageing treatment, ageing treatment are carried out after solution hardening
Afterwards, required window frame is obtained.
Wherein, the baking-curing time of sand mold is 3h in chamber type electric resistance furnace in step (1).
The dosage of refining agent is the 4% of alloy molten solution quality in step (2), and the component in refining agent includes：Sodium chloride 17
Part, 15 parts of lithium chloride, 7 parts of sodium fluoride, 12 parts of potassium fluotitanate, 15 parts of sodium sulphate, 12 parts of potassium carbonate.
Refining aids are gallium nitride and germanium dioxide 3 in step (2):The dosage of the mixture of 1 mass ratio, refining aids is
The 10% of refining agent quality.
Grain refiner in step (2) is Al-Ti-B-C grain refiners, and Ti content is 35% in grain refiner,
Boron content is 5%；The dosage of grain refiner is the 0.15% of alloy molten solution quality.
Ageing process includes two steps in step (5), the first step with 120 DEG C of temperature ageing treatment 4h, second step with
175 DEG C of temperature ageing treatment 7h.
Embodiment 2
A kind of high-strength aluminum alloy integration casting window frame, according to mass fraction, frame material includes following chemical constituent：
Mg 0.80%, Fe 1.5%, Ti 0.28%, Zn 0.05%, Cu 0.21%, Mn 0.05%, Cr 0.07%, Re
0.3%, surplus is Al and inevitable impurity, and impurity is no more than 0.05%.
The ingredient and its mass fraction of Re be：La 18.9%, Nd 19.5%, Sm 20.4%, Dy 18.9%, Ce
22.3%.
The preparation method of window frame provided by the invention includes the following steps：
(1) wax injector is used to suppress wax-pattern and sprue cup, cross gate, sprue and ingate according to window frame structure system, and
To wax-pattern repairing type and group type；Multilayer hanging sand is carried out to the wax-pattern after group type as bonding agent using waterglass；Then it dewaxes
And drying, it is dry after formwork baking-curing in chamber type electric resistance furnace, baking temperature is 260 DEG C, after baking-curing furnace cooling obtain
To sand mold；
(2) aluminium ingot and corresponding intermediate alloy are added to according to corresponding mass ratio in vacuum melting furnace, with 780 DEG C of temperature
Degree melting obtains alloy molten solution, alloy molten solution is put into refining heat preserving furnace, according to required mass ratio into alloy molten solution
Refining agent, refining aids and rare earth element is added, refinery by de-gassing is carried out by the mixed gas of nitrogen and chlorine first, then adds again
Enter grain refiner and carry out crystal grain refinement processing, then filtering and removing slag；
(3) alloy molten solution after refining and filtering and removing slag is poured into sand mold, casting process uses the side of pressure regulation cast
Formula, pouring temperature are 790 DEG C, after casting cooling and solidifying, carry out clear shell using waterpower, are used in combination blowing machine to carry out blast, obtain window
Frame casting；
(4) window frame casting is heat-treated, window frame casting is sent in holding furnace first, heat 260 DEG C, at heat preservation
10h is managed, then continues to window frame casting being heated to 530 DEG C, keeps the temperature 36h, completes to carry out equal Homogenization Treatments, after Homogenization Treatments
Window frame casting is cooled to room temperature, and carries out repairing type and surface polishing；
(5) window frame casting is sent in holding furnace after the completion of repairing type polishing and is preheated, then window frame casting is dissolved
Quenching, solution hardening temperature are 540 DEG C, and the solution hardening time is 35min, and ageing treatment, ageing treatment are carried out after solution hardening
Afterwards, required window frame is obtained.
Wherein, the baking-curing time of sand mold is 5h in chamber type electric resistance furnace in step (1).
The dosage of refining agent is the 5% of alloy molten solution quality in step (2), and the component in refining agent includes：Sodium chloride 17
Part, 15 parts of lithium chloride, 7 parts of sodium fluoride, 12 parts of potassium fluotitanate, 15 parts of sodium sulphate, 12 parts of potassium carbonate.
Refining aids are gallium nitride and germanium dioxide 3 in step (2):The dosage of the mixture of 1 mass ratio, refining aids is
The 10% of refining agent quality.
Grain refiner in step (2) is Al-Ti-B-C grain refiners, and Ti content is 35% in grain refiner,
Boron content is 5%；The dosage of grain refiner is the 0.15% of alloy molten solution quality.
Ageing process includes two steps in step (5), the first step with 120 DEG C of temperature ageing treatment 5h, second step with
175 DEG C of temperature ageing treatment 8h.
Embodiment 3
A kind of high-strength aluminum alloy integration casting window frame, according to mass fraction, frame material includes following chemical constituent：
Mg 0.6%, Fe 1.35%, Ti 0.26%, Zn 0.04%, Cu 0.17%, Mn 0.04%, Cr 0.05%, Re
0.19%, surplus is Al and inevitable impurity, and impurity is no more than 0.05%.
The ingredient and its mass fraction of Re be：La 18.9%, Nd 19.5%, Sm 20.4%, Dy 18.9%, Ce
22.3%.
The preparation method of window frame provided by the invention includes the following steps：
(1) wax injector is used to suppress wax-pattern and sprue cup, cross gate, sprue and ingate according to window frame structure system, and
To wax-pattern repairing type and group type；Multilayer hanging sand is carried out to the wax-pattern after group type as bonding agent using waterglass；Then it dewaxes
And drying, it is dry after formwork baking-curing in chamber type electric resistance furnace, baking temperature is 255 DEG C, after baking-curing furnace cooling obtain
To sand mold；
(2) aluminium ingot and corresponding intermediate alloy are added to according to corresponding mass ratio in vacuum melting furnace, with 770 DEG C of temperature
Degree melting obtains alloy molten solution, alloy molten solution is put into refining heat preserving furnace, according to required mass ratio into alloy molten solution
Refining agent, refining aids and rare earth element is added, refinery by de-gassing is carried out by the mixed gas of nitrogen and chlorine first, then adds again
Enter grain refiner and carry out crystal grain refinement processing, then filtering and removing slag；
(3) alloy molten solution after refining and filtering and removing slag is poured into sand mold, casting process uses the side of pressure regulation cast
Formula, pouring temperature are 770 DEG C, after casting cooling and solidifying, carry out clear shell using waterpower, are used in combination blowing machine to carry out blast, obtain window
Frame casting；
(4) window frame casting is heat-treated, window frame casting is sent in holding furnace first, heat 250 DEG C, at heat preservation
9h is managed, then continues to window frame casting being heated to 500 DEG C, keeps the temperature 30h, completes to carry out equal Homogenization Treatments, after Homogenization Treatments
Window frame casting is cooled to room temperature, and carries out repairing type and surface polishing；
(5) window frame casting is sent in holding furnace after the completion of repairing type polishing and is preheated, then window frame casting is dissolved
Quenching, solution hardening temperature are 535 DEG C, and the solution hardening time is 32min, and ageing treatment, ageing treatment are carried out after solution hardening
Afterwards, required window frame is obtained.
Wherein, the baking-curing time of sand mold is 4h in chamber type electric resistance furnace in step (1).
The dosage of refining agent is the 4.5% of alloy molten solution quality in step (2), and the component in refining agent includes：Sodium chloride
17 parts, 15 parts of lithium chloride, 7 parts of sodium fluoride, 12 parts of potassium fluotitanate, 15 parts of sodium sulphate, 12 parts of potassium carbonate.
Refining aids are gallium nitride and germanium dioxide 3 in step (2):The dosage of the mixture of 1 mass ratio, refining aids is
The 10% of refining agent quality.
Grain refiner in step (2) is Al-Ti-B-C grain refiners, and Ti content is 35% in grain refiner,
Boron content is 5%；The dosage of grain refiner is the 0.15% of alloy molten solution quality.
Ageing process includes two steps in step (5), the first step with 120 DEG C of temperature ageing treatment 4h, second step with
175 DEG C of temperature ageing treatment 8h.
Performance test
According to GB/T 6892-2006《General industry aluminium and aluminum alloy extrusion section bar》In test method, to this implementation
Example aluminium alloy door's window profile be tested for the property, and be arranged 6063 type aluminium alloy extrusions carry out performance contrast test, obtain as
Lower test result：
Table 1：The performance test results of aluminium alloy door's window profile in the present embodiment
| Test event | Control group | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Yield strength (MPa) | 168.5 | 212.7 | 213.2 | 213.5 |
| Tensile strength (MPa) | 247.3 | 287.3 | 285.4 | 287.6 |
| Elongation percentage (%) | 26.5 | 25.8 | 24.7 | 25.5 |
| Vickers hardness (HV, kg/mm2) | 588 | 627 | 625 | 629 |
It analyzes the above test data to find, aluminium alloy door's window profile provided by the invention, relative to conventional aluminium in the market
For alloy profile, there is higher intensity and hardness, wherein the yield strength of material and the promotion of anti-tensile strength are the brightest
Aobvious, this shows aluminium alloy door's window profile in the present invention in use and can bear higher pressure effect, material by
It is not easy to deform when to higher percussion, performance is more preferable.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features.All essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of high-strength aluminum alloy integration casts window frame, it is characterised in that：According to mass fraction, the frame material includes
Following chemical constituent：Mg 0.45-0.80%, Fe 1.2-1.5%, Ti 0.24-0.28%, Zn 0.03-0.05%, Cu 0.13-
0.21%, Mn 0.03-0.05%, Cr 0.03-0.07%, Re 0.1-0.3%, surplus are Al and inevitable impurity, and impurity is not
More than 0.05%.
2. a kind of high-strength aluminum alloy integration according to claim 1 casts window frame, it is characterised in that：According to quality point
Number, the frame material includes following chemical constituent：Mg 0.5-0.7%, Fe 1.3-1.4%, Ti 0.25-0.27%, Zn
0.04-0.05%, Cu 0.15-0.19%, Mn 0.04-0.05%, Cr 0.04-0.06%, Re 0.15-0.21%, surplus be Al and
Inevitable impurity, impurity are no more than 0.05%.
3. a kind of high-strength aluminum alloy integration according to claim 2 casts window frame, it is characterised in that：According to quality point
Number, the frame material includes following chemical constituent：Mg 0.6%, Fe 1.35%, Ti 0.26%, Zn 0.04%, Cu 0.17%,
Mn 0.04%, Cr 0.05%, Re 0.19%, surplus are Al and inevitable impurity, and impurity is no more than 0.05%.
4. a kind of high-strength aluminum alloy integration according to claim 1 casts window frame, it is characterised in that：The Re at
Divide and its mass fraction is：La 18.9%, Nd 19.5%, Sm 20.4%, Dy 18.9%, Ce 22.3%.
5. a kind of high-strength aluminum alloy integration according to claim 1 casts window frame, it is characterised in that：The window frame
Preparation method includes the following steps：
（1）Wax-pattern and sprue cup, cross gate, sprue and ingate are suppressed according to window frame structure system using wax injector, and to wax
Die repair type and group type；Multilayer hanging sand is carried out to the wax-pattern after group type as bonding agent using waterglass；Then it is dewaxed and is done
It is dry, it is dry after formwork baking-curing in chamber type electric resistance furnace, baking temperature is 250-260 DEG C, after baking-curing furnace cooling obtain
To sand mold；
（2）Aluminium ingot and corresponding intermediate alloy are added to according to corresponding mass ratio in vacuum melting furnace, with 750-780 DEG C of temperature
Degree melting obtains alloy molten solution, alloy molten solution is put into refining heat preserving furnace, according to required mass ratio into alloy molten solution
Refining agent, refining aids and rare earth element is added, refinery by de-gassing is carried out by the mixed gas of nitrogen and chlorine first, then adds again
Enter grain refiner and carry out crystal grain refinement processing, then filtering and removing slag；
（3）Alloy molten solution after refining and filtering and removing slag is poured into sand mold, casting process is poured by the way of pressure regulation cast
It is 750-790 DEG C to note temperature, after casting cooling and solidifying, carries out clear shell using waterpower, is used in combination blowing machine to carry out blast, obtains window frame
Casting；
（4）Window frame casting is heat-treated, window frame casting is sent in holding furnace first, heats 240-260 DEG C, at heat preservation
8-10h is managed, then continues to window frame casting being heated to 480-530 DEG C, keeps the temperature 24-36h, completes to carry out equal Homogenization Treatments,
Window frame casting is cooled to room temperature after homogenizing processing, and carries out repairing type and surface polishing；
（5）Window frame casting is sent in holding furnace after the completion of repairing type polishing and is preheated, solution hardening then is carried out to window frame casting,
Solution hardening temperature is 530-540 DEG C, and the solution hardening time is 30-35min, carries out ageing treatment after solution hardening, at timeliness
After reason, required window frame is obtained.
6. a kind of high-strength aluminum alloy integration according to claim 5 casts window frame, it is characterised in that：The step
（1）The baking-curing time of sand mold is 3-5h in middle chamber type electric resistance furnace.
7. a kind of high-strength aluminum alloy integration according to claim 5 casts window frame, it is characterised in that：The step
（2）The dosage of middle refining agent is the 4-5% of alloy molten solution quality, and the component in refining agent includes：17 parts of sodium chloride, lithium chloride 15
Part, 7 parts of sodium fluoride, 12 parts of potassium fluotitanate, 15 parts of sodium sulphate, 12 parts of potassium carbonate.
8. a kind of high-strength aluminum alloy integration according to claim 5 casts window frame, it is characterised in that：The step
（2）Middle refining aids are gallium nitride and germanium dioxide 3:The dosage of the mixture of 1 mass ratio, refining aids is refining agent quality
10%。
9. a kind of high-strength aluminum alloy integration according to claim 5 casts window frame, it is characterised in that：The step
（2）In grain refiner be Al-Ti-B-C grain refiners, Ti content is 35% in grain refiner, boron content 5%；It is brilliant
The dosage of grain fining agent is the 0.15% of alloy molten solution quality.
10. a kind of high-strength aluminum alloy integration according to claim 5 casts window frame, it is characterised in that：The step
（5）Middle ageing process includes two steps, and the first step is with 120 DEG C of temperature ageing treatment 4-5h, and second step is with 175 DEG C of temperature
Ageing treatment 7-8h.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110340297A (en) * | 2019-07-30 | 2019-10-18 | 贵州安吉航空精密铸造有限责任公司 | A kind of casting method of metal alloy castings |
| CN117987694A (en) * | 2024-04-03 | 2024-05-07 | 有研工程技术研究院有限公司 | High-conductivity and high-corrosion-resistance aluminum monofilament and production process and application thereof |
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| CN117987694A (en) * | 2024-04-03 | 2024-05-07 | 有研工程技术研究院有限公司 | High-conductivity and high-corrosion-resistance aluminum monofilament and production process and application thereof |
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