CN106148777A - The processing method of automobile engine almag - Google Patents
The processing method of automobile engine almag Download PDFInfo
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- CN106148777A CN106148777A CN201610867469.4A CN201610867469A CN106148777A CN 106148777 A CN106148777 A CN 106148777A CN 201610867469 A CN201610867469 A CN 201610867469A CN 106148777 A CN106148777 A CN 106148777A
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- 238000003672 processing method Methods 0.000 title claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 36
- 239000000956 alloy Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 25
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 14
- 239000011777 magnesium Substances 0.000 claims abstract description 14
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 15
- 230000032683 aging Effects 0.000 claims description 11
- 238000000889 atomisation Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000003979 granulating agent Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 3
- 239000006104 solid solution Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005275 alloying Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005204 segregation Methods 0.000 abstract description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
Classifications
-
- 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
-
- B22F1/0003—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- 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
-
- 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
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0408—Light metal alloys
- C22C1/0416—Aluminium-based alloys
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The processing method that the present invention relates to automobile engine almag, it includes being placed in heating furnace aluminum shot, and aluminum shot adds magnesium grain after dissolving and stannum grain carries out melting, until molten clear after drag for clean scum silica frost, obtain aluminium alloy；Aluminium alloy is poured in mould, is subsequently placed in cold water and is cooled to room temperature, obtain alloy pig；Pulverize after alloy pig is lathed fines, obtain alloyed powder；Above-mentioned alloyed powder is placed in extrusion die, more extruded by extruder, obtain alloy material, then be sintered and heat treatment；Then the material after heat treatment is become with liquid mixing metal powder slurry；Again slurry is made metal dust by sponging granulator.The invention can ensure that metal is shorter in the hot stage time of staying, alloying element has little time to spread, thus thinning microstructure, reduce segregation, then by extruding and the intensity of Technology for Heating Processing raising material, then metal dust can be prepared by sponging granulator.
Description
Technical field
The processing method that the present invention relates to automobile engine almag.
Background technology
Aluminium alloy with magnesium as main alloy element has light weight, anti-corrosion good, the feature of easy-formation, moderate strength, extensively
General being applied to the vehicles manufactures such as Automobile Plate, oil truck, coal conveyor, boats and ships, manufacturing the vehicles with aluminium alloy can substantially subtract
Light dead-weight, raising carrying capacity, minimizing energy resource consumption, be used for automobile engine and change speed gear box at present.Along with the development of society,
People require that the vehicles possess higher serviceability and reliability, and this is to the mechanical property of some parts material, molding
The combination property such as performance, heat stability it is also proposed higher requirement.As a example by the engine aluminum alloy of automobile, it is desirable to material
Performance meet tensile strength 280～350Mpa, yield strength σ 0.2 >=125 Mpa, percentage elongation δ >=26%, with
Time material spray paint baking after intensity be not decreased obviously.This just requires that material preserves the highest prolonging in the case of higher-strength
Stretch rate, to improve the processability of material, require that material has the highest heat resistance simultaneously, so that the traffic work prepared
There is higher security performance.
Summary of the invention
For above-mentioned technical problem, the present invention provides one can prepare intensity height, the preferable al-mg alloy powder of extensibility
Processing method.
The technical solution used in the present invention is: the processing method of a kind of automobile engine almag, it includes following
Step:
(1) being placed in heating furnace by aluminum shot, aluminum shot adds magnesium grain and stannum grain after dissolving and carries out melting, until molten clear after drag for clean scum silica frost,
Obtain aluminium alloy；
(2) aluminium alloy is poured in mould, is subsequently placed in cold water and is cooled to room temperature, obtain alloy pig；
(3) pulverize after alloy pig being lathed fines, obtain alloyed powder；
(4) above-mentioned alloyed powder is placed in extrusion die, more extruded by extruder, obtain alloy material；
(5) more above-mentioned alloy material is sintered and heat treatment；
(6) then by the material after heat treatment and liquid mixing, and add organic bond and stir, be configured to metal powder pulp
Material；
(7) again slurry is made metal dust by sponging granulator.
As preferably, in described stannum grain, magnesium grain and aluminum shot, the content of magnesium is 5-12wt%, and the content of stannum is 12 wt %,
Surplus is aluminum.
As preferably, described liquid uses distilled water or deionized water, and the mass ratio of alloyed powder and liquid is (2.5
3): 1.
As preferably, described organic bond uses metal granulating agent, and its addition is the 2 4% of alloyed powder quality.
As preferably, described sponging granulator uses centrifugal spraying granulator or press atomization comminutor.
As preferably, the rotating speed of described centrifugal spraying granulator is 5,000 8000 revs/min, the pressure of press atomization comminutor
Power is 15 25kg/ cm 2。
As preferably, the inlet temperature of described sponging granulator dry air is 250 350 DEG C, outlet temperature is 100
150℃；The flow of dry air is 100 200 Nm3 /h；Charging rate is 10 20 kg/h.
As preferably, extruded carrying out in protective atmosphere, pressure is 1000 1200MPa.
As preferably, during sintering, first sinter 20 30s with the temperature of 280 320 DEG C, then with 500 600 DEG C of temperature
Sinter 40 60s, then sinter 20 30s with 650 700 DEG C of temperature.
As preferably, heat treatment uses solid solution, cold pressing deformation and Ageing Treatment successively, and wherein the temperature of solution treatment is
650 700 DEG C, the time is 10 12min；The deflection of colding pressing of deformation process of colding pressing is 30 35%；The temperature of Ageing Treatment is
300 350 DEG C, the time is 2 3h.
As can be known from the above technical solutions, the present invention is poured in mould by aluminium alloy, is subsequently placed in cold water and is cooled to
Room temperature, makes aluminium alloy quickly cool down, it is ensured that metal is shorter in the hot stage time of staying, and alloying element has little time diffusion, thus
Thinning microstructure, is reduced segregation, is then improved the intensity of material by extruding and Technology for Heating Processing, then can be made by sponging granulator
Standby front intensity is higher, the preferable powder of elongation percentage.
Detailed description of the invention
The present invention is described more detail below, and illustrative examples and explanation in this present invention are used for explaining the present invention,
But it is not as a limitation of the invention.
The processing method of automobile engine almag, it comprises the following steps:
With aluminum, magnesium, stannum grain as raw material, and by the content of magnesium be 5-12wt%, the content of stannum be 12 wt %, surplus be that aluminum is carried out
Dispensing；Then being placed in induction heater by aluminum shot, aluminum shot adds magnesium grain and stannum grain after dissolving and carries out melting, until molten clear after drag for clean
Scum silica frost, obtains aluminium alloy；Aluminium alloy is poured in mould, is immediately placed in cold water together with mould and is cooled to room temperature, closed
Ingot；Then pulverize after alloy pig being lathed fines, obtain alloyed powder.
Above-mentioned alloyed powder is placed in extrusion die, more extruded by extruder, obtain alloy material；Extruding
Cheng Zhong, the metal powder end in mould is in addition to the normal pressure being squeezed machine drift, also by lateral pressure and the friction of mold wall
The effect of power；Along with the movement of drift, the powder in mould is progressively compacted, thus is extruded by mould.In order to prevent metal
Oxidation, extruded is carried out under protective atmosphere, and pressure uses 1000 1200MPa, so can obtain consistency higher
Material, and performance profile is uniform, productivity ratio is high；Then the copper nickel alumin(i)um alloy material of above-mentioned extruded acquisition is sintered,
Sintering is carried out in three stages, first sinters 20 30s with the temperature of 280 320 DEG C, then with 500 600 DEG C of temperature sintering 40
60s, then sinter 20 30s with 650 700 DEG C of temperature；First stage belongs to the sintering preparatory stage, for sintering purification further
Environment；Second stage, along with the rising of temperature, initially forms sintering neck, and be combined with each other between alloying substance granule, granule table
Face oxide generation reduction reaction, thus continue to participate in sintering, intergranular combination encloses space each other；3rd
The sintering temperature in stage is higher, and intergranular sintering neck is grown up further, and more granule is merged, and sintered body obtains into one
Step is shunk, nodularization, thus intensity and the hardness of material is prepared in raising.
Above-mentioned powdered metallurgical material is carried out heat treatment；Heat treatment uses solid solution, cold pressing deformation and Ageing Treatment successively；Gu
The temperature of molten process is 650 700 DEG C, and the time is 10 12min, so can control nickel, the aluminum solid solubility in Copper substrate and
Grain size；Solid solubility temperature is too high, can cause coarse grains, reduces alloy strength；Solid solubility temperature is too low, though crystal grain is less, but
Follow-up Ageing Treatment can be caused to be difficult to play the effect of reinforced alloys；The deflection of colding pressing of deformation process of colding pressing is 30 35%；Time
Effect carries out cold deformation to alloy before processing, and alloy can be made to present the double effects of working hardening and ageing strengthening；At timeliness
The temperature of reason is 300 350 DEG C, and the time is 2 3h；Ageing Treatment can separate out the second phase, produces dispersion-strengtherning；Then by alloy
Powder and liquid mixing, and add metal granulating agent and stir, it is configured to metal powder slurry；Again slurry is made by centrifugal spray
Metal dust prepared by grain machine or press atomization comminutor.
Embodiment 1
Being placed in induction heater by 93wt % aluminum shot, aluminum shot adds 2wt % stannum grain after dissolving and 5wt% magnesium grain carries out melting, treats
Molten clear after drag for clean scum silica frost, obtain aluminium alloy；Aluminium alloy is poured in mould, is immediately placed in cold water together with mould and is cooled to room
Temperature, obtains alloy pig；Then pulverize after alloy pig being lathed fines, obtain alloyed powder；Alloyed powder is placed in extrusion die
In tool, then the pressure extrusion molding by extruder employing 1000MPa, obtain alloy material, then sinter with the temperature of 280 DEG C
30s, then with 500 DEG C of temperature sintering 60s, then with 650 DEG C of temperature sintering 30s；Subsequently with 650 DEG C of solution treatment 12min；Then
Colding pressing deformation process, deflection of colding pressing is 30%；Last with 300 DEG C of Ageing Treatment 3h；Then by the material after heat treatment and distillation
Water mixes, and the mass ratio of material and distilled water is 2.5:1, and the 2% metal granulating agent adding quality of materials stirs, and joins
Make metal powder slurry；Again slurry is carried out pelletize by centrifugal spraying granulator, wherein the entering of sponging granulator dry air
Mouthful temperature is 250 DEG C, outlet temperature is 100 DEG C, the flow of dry air is 100 Nm3 / h, charging rate are 10kg/h, from
The rotating speed of heart sponging granulator is 5,000 8000 revs/min, thus obtains al-mg alloy powder；This alloy powder is sent out for automobile
Tensile strength during motivation parts up to 352Mpa, yield strength reaches 143Mpa, percentage elongation reaches 26.4%.
Embodiment 2
Being placed in induction heater by 89.5wt % aluminum shot, aluminum shot adds 1.5wt % stannum grain after dissolving and 10wt% magnesium grain melts
Refining, until molten clear after drag for clean scum silica frost, obtain aluminium alloy；Aluminium alloy is poured in mould, is immediately placed in cold water cold together with mould
But to room temperature, alloy pig is obtained；Then pulverize after alloy pig being lathed fines, obtain alloyed powder；Alloyed powder is placed in
In extrusion die, then the pressure extrusion molding by extruder employing 1100MPa, obtain alloy material, then with the temperature of 300 DEG C
Degree sintering 25s, then with 560 DEG C of temperature sintering 50s, then with 680 DEG C of temperature sintering 25s；Subsequently with 680 DEG C of solution treatment
11min；Then colding pressing deformation process, deflection of colding pressing is 32%；Last with 330 DEG C of Ageing Treatment 2.5h；Then by after heat treatment
Material mix with deionized water, and the mass ratio of material and deionized water is 2.8:1, and 3% metal adding quality of materials is made
Granule stirs, and is configured to metal powder slurry；Again slurry is carried out pelletize, wherein mist projection granulating by press atomization comminutor
The inlet temperature of machine dry air is 300 DEG C, outlet temperature is 130 DEG C, the flow of dry air is 150 Nm3 / h, charging speed
Degree is 15 kg/h, and the pressure of press atomization comminutor is 25kg/ cm 2, thus obtain al-mg alloy powder；This alloy powder is used
Tensile strength when automotive engine component up to 365Mpa, yield strength reaches 162Mpa, percentage elongation reaches 27.8%.
Embodiment 3
Being placed in induction heater by 87wt % aluminum shot, aluminum shot adds 1wt % stannum grain after dissolving and 12wt% magnesium grain carries out melting,
Until molten clear after drag for clean scum silica frost, obtain aluminium alloy；Aluminium alloy is poured in mould, is immediately placed in cold water together with mould and is cooled to
Room temperature, obtains alloy pig；Then pulverize after alloy pig being lathed fines, obtain alloyed powder；Alloyed powder is placed in extruding
In mould, then the pressure extrusion molding by extruder employing 1200MPa, obtain alloy material, then burn with the temperature of 320 DEG C
Knot 20s, then with 600 DEG C of temperature sintering 40s, then with 700 DEG C of temperature sintering 20s；Subsequently with 700 DEG C of solution treatment 10min；Connect
Deformation process of colding pressing, deflection of colding pressing is 35%；Last with 350 DEG C of Ageing Treatment 2h；Then the material of heat treatment and deionization
Water mixes, and the mass ratio of material and deionized water is 3:1, and the 4% metal granulating agent adding quality of materials stirs, and joins
Make metal powder slurry；Again slurry is carried out pelletize by press atomization comminutor, wherein the entering of sponging granulator dry air
Mouthful temperature is 350 DEG C, outlet temperature is 150 DEG C, the flow of dry air is 200 Nm3 / h, charging rate are 20 kg/h, pressure
The pressure of power sponging granulator is 15kg/ cm 2, thus obtain al-mg alloy powder；This alloy powder is used for automobile engine portion
Tensile strength during part up to 351Mpa, yield strength reaches 145Mpa, percentage elongation reaches 26.7%.
The technical scheme provided the embodiment of the present invention above is described in detail, specific case used herein
Principle and embodiment to the embodiment of the present invention are set forth, and the explanation of above example is only applicable to help to understand this
The principle of inventive embodiments；Simultaneously for one of ordinary skill in the art, according to the embodiment of the present invention, in specific embodiment party
All will change in formula and range of application, in sum, this specification content should not be construed as limitation of the present invention.
Claims (10)
1. the processing method of automobile engine almag, it comprises the following steps:
(1) being placed in heating furnace by aluminum shot, aluminum shot adds magnesium grain and stannum grain after dissolving and carries out melting, until molten clear after drag for clean scum silica frost,
Obtain aluminium alloy；
(2) aluminium alloy is poured in mould, is subsequently placed in cold water and is cooled to room temperature, obtain alloy pig；
(3) pulverize after alloy pig being lathed fines, obtain alloyed powder；
(4) above-mentioned alloyed powder is placed in extrusion die, more extruded by extruder, obtain alloy material；
(5) more above-mentioned alloy material is sintered and heat treatment；
(6) then by the material after heat treatment and liquid mixing, and add organic bond and stir, be configured to metal powder pulp
Material；
(7) again slurry is made metal dust by sponging granulator.
The processing method of automobile engine almag the most according to claim 1, it is characterised in that: described aluminum shot, magnesium
In grain and stannum grain, the content of magnesium is 5-12wt%, and the content of stannum is 12 wt %, and surplus is aluminum.
3. the processing method of automobile engine almag as claimed in claim 1, it is characterised in that: described liquid uses and steams
Distilled water or deionized water, and the mass ratio of alloyed powder and liquid is (2.5 3): 1.
4. the processing method of automobile engine almag as claimed in claim 1, it is characterised in that: described organic bond
Using metal granulating agent, its addition is the 2 4% of alloyed powder quality.
5. the processing method of automobile engine almag as claimed in claim 1, it is characterised in that: described sponging granulator
Use centrifugal spraying granulator or press atomization comminutor.
6. the processing method of automobile engine almag as claimed in claim 5, it is characterised in that: described centrifugal spray is made
The rotating speed of grain machine is 5,000 8000 revs/min, and the pressure of press atomization comminutor is 15 25kg/ cm 2。
7. the processing method of automobile engine almag as claimed in claim 5, it is characterised in that: described sponging granulator
The inlet temperature of dry air is 250 350 DEG C, outlet temperature is 100 150 DEG C；The flow of dry air is 100 200
Nm 3 /h；Charging rate is 10 20 kg/h.
8. the processing method of automobile engine almag as claimed in claim 1, it is characterised in that: extruded in protection
Carrying out in atmosphere, pressure is 1000 1200MPa.
9. the processing method of as claimed in claim 1 automobile engine almag, it is characterised in that: during sintering, first with
The temperature of 280 320 DEG C sinters 20 30s, then sinters 40 60s with 500 600 DEG C of temperature, then with 650 700 DEG C of temperature
Degree sintering 20 30s.
10. the processing method of automobile engine almag as claimed in claim 1, it is characterised in that: heat treatment is adopted successively
By solid solution, cold pressing deformation and Ageing Treatment, wherein the temperature of solution treatment is 650 700 DEG C, and the time is 10 12min；Cold pressing
The deflection of colding pressing of deformation process is 30 35%；The temperature of Ageing Treatment is 300 350 DEG C, and the time is 2 3h.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107829003A (en) * | 2017-11-09 | 2018-03-23 | 北京科技大学 | A kind of method that aluminum alloy spare part is prepared using powder metallurgic method |
| CN115927894A (en) * | 2022-12-08 | 2023-04-07 | 湖南英捷高科技有限责任公司 | Aluminum alloy material for automobile heat dissipation parts and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829003A (en) * | 2017-11-09 | 2018-03-23 | 北京科技大学 | A kind of method that aluminum alloy spare part is prepared using powder metallurgic method |
| CN107829003B (en) * | 2017-11-09 | 2022-11-22 | 北京科技大学 | Method for preparing aluminum alloy parts by adopting powder metallurgy method |
| CN115927894A (en) * | 2022-12-08 | 2023-04-07 | 湖南英捷高科技有限责任公司 | Aluminum alloy material for automobile heat dissipation parts and preparation method thereof |
| CN115927894B (en) * | 2022-12-08 | 2024-02-27 | 湖南英捷高科技有限责任公司 | Aluminum alloy material for automobile heat dissipation parts and preparation method thereof |
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