CN105543593B - High hard, high-strength, tenacity aluminum alloy and its preparation method and the preparation method of synchro converter ring - Google Patents
High hard, high-strength, tenacity aluminum alloy and its preparation method and the preparation method of synchro converter ring Download PDFInfo
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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
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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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
- 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
- C22F1/053—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 zinc as the next major constituent
Abstract
A kind of hard, the high-strength, tenacity aluminum alloy of height, its composition include：The zinc of 7.36~10.21 weight %；The magnesium of 2.18~3.56 weight %；The copper of 1.9~2.8 weight %；The zirconium of 0.15~0.40 weight %；The iron of 0.12~0.36 weight %；The silicon of 0.05~0.45 weight %；Erbium/lanthanum/cerium of 0.01~0.03 weight %；Surplus is aluminium；And inevitable impurity.Hard, high-strength, tenacity aluminum alloy the method for above-mentioned height is prepared the invention further relates to a kind of.The invention further relates to high hard, high-strength, high-ductility synchro converter ring preparation method.The present invention is by improveing melting and heat treatment process, so that its obtained aluminium alloy has the excellent mechanical property of high rigidity, high-tensile, high-yield strength at the same time, when it is used to prepare synchro converter ring, obtained product surface intensity and wearability greatly improve, and are conducive to improve the quality and service life of product.
Description
Technical field
The present invention relates to a kind of aluminium alloy, refers in particular to a kind of high hard, high-strength, tenacity aluminum alloy and its preparation method and synchronizer
The preparation method of ring gear.
Background technology
Aluminium alloy is the general name using aluminium as the alloy of base, and main alloy element includes copper, silicon, magnesium, zinc, manganese, minor element
Containing nickel, iron, titanium, lithium, essential element content, proportioning and impurity content in alloy have alloy end properties very big shadow
Ring.
Automobile synchronizer is the critical component of mechanical gear transmission speed variator, using synchronizer shift light and flexible, is changed
Gear, axis are not hit during shelves, extend speed changer life-span, reduce labor intensity, improve the dynamic property and fuel-economy of automobile
Property.Synchronizer undertakes gear shift, transmits the effect of moment of torsion, in gearshift procedure synchro converter ring require larger friction coefficient and
Higher wearability, the net synchronization capability of synchronizer are substantially dependent upon the performance of synchro converter ring, are crucial, rapid wears in gearbox
Part.
Chinese invention patent application（Application number：201410191464.5 publication number：CN104789839A）Disclose one kind
Lightweight tenacity aluminum alloy, its by increase its composition in zinc content and by the improvement to melting and heat treatment process, although
The intensity and hardness of aluminium alloy can be improved to a certain extent, make it largely be suitable for making light-weight, good toughness and batting
Remote baseball, but when its obtained aluminium alloy is applied to prepare synchro converter ring, no matter intensity, hardness or toughness have
Wait to improve, obtained synchro converter ring often has the defects of being easily deformed, is easy to wear.
The content of the invention
The present invention provides a kind of high hard, high-strength, tenacity aluminum alloy and its preparation method and the preparation method of synchro converter ring, its main mesh
Be overcome caused by intensity of aluminum alloy, hardness, toughness deficiency synchro converter ring to be easily deformed and easy to wear lack
Fall into.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of hard, the high-strength, tenacity aluminum alloy of height, the composition of the aluminium alloy include：The zinc of 7.36~10.21 weight %；2.18
The magnesium of~3.56 weight %；The copper of 1.9~2.8 weight %；The zirconium of 0.15~0.40 weight %；The iron of 0.12~0.36 weight %；
The silicon of 0.05~0.45 weight %；Erbium/lanthanum/cerium of 0.1~0.3 weight %；Surplus is aluminium；And inevitable impurity.
A kind of high hard, high-strength, tenacity aluminum alloy preparation method, comprises the following steps：
A, alloy raw material is prepared：It is made ready beforehand for the aluminium block of the 99.9 weight % containing aluminium, the spelter of the 99.9 weight % containing zinc, containing magnesium
The MAG block of 99.9 weight %, the aluminum bronze intermediate alloy block of 50 weight % of cupric, the 5 weight % containing erbium/lanthanum/cerium aluminium-erbium/lanthanum/cerium among
The raw material of alloy block；
B, melting：Formed with the weight of aluminium, copper and erbium/lanthanum/cerium in above-mentioned aluminium alloy, aluminium block, the aluminium that will be got ready in step A
In copper intermediate alloy block and aluminium-erbium/lanthanum/cerium intermediate alloy block input melting furnace, 750 DEG C -770 DEG C are heated to, is treated fully molten
Skim after change and add coverture；
C, in fusion process, temperature falls back to 720 DEG C, is formed with the weight of above-mentioned zinc in aluminium alloy, adds standby in step A
Good spelter, temperature continue to fall back to 700 DEG C, are formed with the weight of such as above-mentioned Magnesium in Aluminum Alloys, add in step A and get MAG block ready,
Slag treatment is taken off after dissolving；
D, degasification is refined：By being blown into chloroethanes into the alloy molten liquid obtained after step C, bubble is produced, bubble exists
In floating-upward process, dross inclusion adsorption and/or hydrogen, after the bubble floating for having adsorbed field trash and/or hydrogen is excluded to liquid level, reach
To degasification and slagging-off, refined；
E, skim and stand 20 minutes, be cooled to 680 DEG C of progress casting aluminium bar material；
F, aluminium bar processing is homogenized：The aluminium bar material that step E is obtained is placed in Homogenization Treatments stove and carries out Homogenization Treatments；
G, extruding or die forging：The aluminium bar material obtained in step F is placed in intermediate frequency furnace and is heated, and in being squeezed into mould
Type, or by the aluminium bar material obtained in step F be placed on special forging equipment using mould make blank be molded and obtain forging；
H, the casting after shaping is demoulded, so as to subsequent mechanical working process.
Further, further included in step C and analysis is sampled to the alloy molten liquid after skimming, determine aluminium alloying
Study point.
Further, the step F includes the aluminium bar material that step E is obtained being placed in Homogenization Treatments stove into being about to stablize
Rise to 450 DEG C -460 DEG C continue 24 it is small when, then be warming up to 470 DEG C -500 DEG C continue 2 it is small when.
Further, the step G, which includes the aluminium bar material obtained in step F being placed in intermediate frequency furnace, heats 430 degrees Celsius
Under continue 15 minutes, and in extrusion forming in mould, temperature is 400 DEG C wherein in mould.
Further, the step C take off that Slag treatment includes before skimming should be first to uniformly removing into powdery on alloy molten liquid
Flux, makes slag be separated with metal, is conducive to skim, and can be added after skimming into alloy molten liquid in step A and get MAG block ready, at the same time
Covered with ground flux, to prevent the scaling loss of magnesium.
A kind of high hard, high-strength, high-ductility synchro converter ring preparation method, comprises the following steps：A, alloy raw material is prepared：In advance
First get the aluminium block of the 99.9 weight % containing aluminium, the spelter of the 99.9 weight % containing zinc, the MAG block of the 99.9 weight % containing magnesium, 50 weight % of cupric ready
Aluminum bronze intermediate alloy block, the 5 weight % containing erbium/lanthanum/cerium aluminium-erbium/lanthanum/cerium intermediate alloy block raw material；
B, melting：Formed with the weight of aluminium, copper and erbium/lanthanum/cerium in above-mentioned aluminium alloy, aluminium block, the aluminium that will be got ready in step A
In copper intermediate alloy block and aluminium-erbium/lanthanum/cerium intermediate alloy block input melting furnace, 750 DEG C -770 DEG C are heated to, is treated fully molten
Skim after change and add coverture；
C, in fusion process, temperature falls back to 720 DEG C, is formed with the weight of above-mentioned zinc in aluminium alloy, adds standby in step A
Good spelter, temperature are continued to fall back to 700 DEG C, are formed with the weight of above-mentioned Magnesium in Aluminum Alloys, are added in step A and are got MAG block ready, treat
Slag treatment is taken off after dissolving；
D, degasification is refined：By being blown into chloroethanes into the alloy molten liquid obtained after step C, bubble is produced, bubble exists
In floating-upward process, dross inclusion adsorption and/or hydrogen, after the bubble floating for having adsorbed field trash and/or hydrogen is excluded to liquid level, reach
To degasification and slagging-off, refined；
E, skim and stand 20 minutes, be cooled to 680 DEG C of progress casting aluminium bar material；
F, aluminium bar processing is homogenized：The aluminium bar material that step E is obtained is placed in Homogenization Treatments stove and carries out Homogenization Treatments；
G, extruding or die forging：The aluminium bar material obtained in step F is placed in intermediate frequency furnace and is heated, and in being squeezed into mould
Type, or by the aluminium bar material obtained in step F be placed on special forging equipment using mould make blank be molded and obtain forging；
H, the casting after shaping is demoulded, you can a seamless Al-alloy pipe is obtained,
I, the seamless Al-alloy pipe is carried out cutting ring, being warming up to 430 DEG C by intermediate frequency furnace preheats 15 minutes, is placed in forging die
Quenching carries out solution treatment to isothermal forging swaging immediately after on tool, then carries out quenching and carries out first time ageing treatment, Zhi Houting
Second of ageing treatment is carried out again after fire to natural cooling, warms naturally to 110 DEG C -130 DEG C again after secondary ageing is handled
Lower progress third time ageing treatment, when the processing time of third time ageing treatment is 36 small.
Further, the treatment temperature of the solution treatment be 470 DEG C -480 DEG C, processing time for 1 it is small when -2 it is small when.
Further, the treatment temperature of the first time ageing treatment is 120 DEG C -140 DEG C, when processing time is 20 small -
30 it is small when.
Further, the treatment temperature of second of ageing treatment is less than 0 degree Celsius, when processing time is 72 small.
Compared to the prior art, the beneficial effect that the present invention produces is:
1st, in the present invention, the applicant is by increasing the content of rare earth element er/lanthanum/cerium, and reduces iron and silicon
Content, since iron and silicon can have adverse effect aluminum alloy hardness intensity and toughness, thus the applicant stumbles on, can
By adding a small amount of rare earth element er/lanthanum/cerium, can make up because reducing iron and silicone content and to aluminium alloy other performances
Missing, and the applicant is by improveing melting and heat treatment process so that and its obtained aluminium alloy has height at the same time
Hardness, high-tensile, the excellent mechanical property of high-yield strength, make intensity, hardness or toughness both with respect to the prior art
It is greatly improved, when it is used to prepare synchro converter ring, obtained product surface intensity and wearability greatly improve,
Be conducive to improve the quality and service life of product.
2nd, in the present invention, handled by introducing two-step homogenization, can cause each position mechanical property of aluminium alloy
Reach unanimity, on the one hand can effectively reduce shear stress mutual inside Al-alloy products, and then increase Al-alloy products
Intensity, hardness and toughness, on the other hand can also be conducive to improve the uniformity of product, reduce face crack, and reach alloy
To good casting character, machining property and throw rotary light performance.
3rd, in the present invention, by introducing the ageing treatment under solution treatment and three times different condition, can double ground it is strong
Change intensity, hardness and the toughness of synchro converter ring so that the synchro converter ring has the hardness of 220-230HB, 704MPa at the same time
Tensile strength, the excellent mechanical property of the yield strength of 670MPa, make intensity, hardness or toughness be obtained both with respect to the prior art
To very big lifting so that synchro converter ring product surface intensity and wearability greatly improve, and are conducive to improve synchronizer tooth
The quality and service life of ring product.
Embodiment
Illustrate the embodiment of the present invention below.
Embodiment one
In the present specification, the component that aluminium alloy is included is on the basis of the alloy gross weight, and with percentage by weight
Represent.
First, a kind of high hard, high-strength, tenacity aluminum alloy, the composition of the aluminium alloy include：7.36~10.21 weight %'s
Zinc；The magnesium of 2.18~3.56 weight %；The copper of 1.9~2.8 weight %；The zirconium of 0.15~0.40 weight %；0.12~0.36 weight
Measure the iron of %；The silicon of 0.05~0.45 weight %；Erbium/lanthanum/cerium of 0.1~0.3 weight %；Surplus is aluminium；And inevitably
Impurity.
A few group aluminum alloy proportionings presented below：
1st, a kind of high hard, high-strength, tenacity aluminum alloy, its composition include：Zinc 7.36%；2.18 % of magnesium；1.9 % of copper；Zirconium 0.15
%；0.12 % of iron；0.05 % of silicon；0.1 % of lanthanum；88.14 % of aluminium.
2nd, a kind of high hard, high-strength, tenacity aluminum alloy, its composition include：Zinc 10.21%；Magnesium 3.56%；Copper 2.8%；Zirconium 0.40
%；0.36 % of iron；Silicon 0.45%；0.3 % of erbium；Aluminium 81.92%.
3rd, a kind of high hard, high-strength, tenacity aluminum alloy, its composition include：Zinc 8%；2.5 % of magnesium；Copper 2%；Zirconium 0.2%；Iron 0.2
%；0.1 % of silicon；0.2 % of erbium；86.8 % of aluminium.
4th, a kind of high hard, high-strength, tenacity aluminum alloy, its composition include：Zinc 9%；3.5 % of magnesium；Copper 2%；Zirconium 0.2%；Iron 0.2
%；0.1 % of silicon；0.2 % of cerium；84.8 % of aluminium.
5th, zinc 8%；3.0 % of magnesium；Copper 2.5%；Zirconium 0.2%；0.2 % of iron；0.2 % of silicon；0.3 % of erbium；85.8 % of aluminium.
A kind of high hard, high-strength, tenacity aluminum alloy preparation method, comprises the following steps：
A, alloy raw material is prepared：It is made ready beforehand for the aluminium block of the 99.9 weight % containing aluminium, the spelter of the 99.9 weight % containing zinc, containing magnesium
The MAG block of 99.9 weight %, the aluminum bronze intermediate alloy block of 50 weight % of cupric, the 5 weight % containing erbium/lanthanum/cerium aluminium-erbium/lanthanum/cerium among
The raw material of alloy block.
B, melting：Formed with the weight of aluminium, copper and erbium/lanthanum/cerium in any one formula of above-mentioned aluminium alloy, will be standby in step A
In good aluminium block, aluminum bronze intermediate alloy block and aluminium-erbium/lanthanum/cerium intermediate alloy block input melting furnace, 750 DEG C -770 is heated to
DEG C, skim after abundant fusing and add coverture.
C, in fusion process, temperature falls back to 720 DEG C, is formed with the weight of zinc in any one formula of aluminium alloy, adds step
Spelter is got ready in rapid A, and temperature continues to fall back to 700 DEG C, is formed with the weight of magnesium in any one formula of aluminium alloy, adds step A
In get MAG block ready, Slag treatment is taken off after dissolving；The step take off Slag treatment include before skimming should first on alloy molten liquid uniformly
Remove into ground flux, slag is separated with metal, be conducive to skim, can add in step A and get ready into alloy molten liquid after skimming
MAG block, while covered with ground flux, to prevent the scaling loss of magnesium.
D, degasification is refined：By being blown into chloroethanes into the alloy molten liquid obtained after step C, bubble is produced, bubble exists
In floating-upward process, dross inclusion adsorption and/or hydrogen, after the bubble floating for having adsorbed field trash and/or hydrogen is excluded to liquid level, reach
To degasification and slagging-off, refined.
E, skim and stand 20 minutes, be cooled to 680 DEG C of progress casting aluminium bar material.
F, aluminium bar processing is homogenized：The aluminium bar material that step E is obtained is placed in Homogenization Treatments stove and carries out Homogenization Treatments.
The step can be specially by the aluminium bar material that step E is obtained be placed in Homogenization Treatments stove into be about to stabilization rise to 450 DEG C -460
DEG C continue 24 it is small when, then be warming up to 470 DEG C -500 DEG C continue 2 it is small when.Handled by introducing two-step homogenization, aluminium can be closed
Each position mechanical property of gold reaches unanimity, and on the one hand can effectively reduce shear stress mutual inside Al-alloy products,
And then increase intensity, hardness and the toughness of Al-alloy products, it on the other hand can also be conducive to improve the uniformity of product, reduce
Face crack, and alloy is reached good casting character, machining property and throwing rotary light performance.
G, extruding or die forging：The aluminium bar material obtained in step F is placed in intermediate frequency furnace and is heated, and in being squeezed into mould
Type, or by the aluminium bar material obtained in step F be placed on special forging equipment using mould make blank be molded and obtain forging.Should
Step can be specially the aluminium bar material that will be obtained in step F be placed in intermediate frequency furnace heat 430 degrees Celsius under continue 15 minutes, and in
Extrusion forming in mould, temperature is 400 DEG C wherein in mould.Certainly the aluminium bar material obtained in step F can also be placed in special
Blank is molded using mould and obtain forging on forging equipment.
H, the casting after shaping is demoulded, so as to subsequent mechanical working process, the demoulding of its medium casting can also carry out die forging,
The casting after the demoulding can be placed on special forging equipment is molded blank and is obtained more preferable forging using mould.
In the present embodiment, the applicant is by increasing the content of rare earth element er/lanthanum/cerium, and reduces iron and silicon
Content, since iron and silicon can have adverse effect aluminum alloy hardness intensity and toughness, thus the applicant stumbles on, can
By adding a small amount of rare earth element er/lanthanum/cerium, can make up because reducing iron and silicone content and to aluminium alloy other performances
Missing, and the applicant is by improveing melting and heat treatment process so that and its obtained aluminium alloy has height at the same time
Hardness, high-tensile, the excellent mechanical property of high-yield strength, make intensity, hardness or toughness both with respect to the prior art
It is greatly improved, when it is used to prepare synchro converter ring, obtained product surface intensity and wearability greatly improve,
Be conducive to improve the quality and service life of product.
Embodiment two
The synchro converter ring designed as needed prepares following groups aluminium alloy formula：
Formula one, zinc 7.36%；2.18 % of magnesium；1.9 % of copper；0.15 % of zirconium；0.12 % of iron；0.05 % of silicon；0.1 % of erbium；Aluminium
88.14 %。
Formula two, zinc 10.21%；Magnesium 3.56%；Copper 2.8%；0.40 % of zirconium；0.36 % of iron；Silicon 0.45%；0.3 % of erbium；Aluminium
81.92%。
Formula three, zinc 8%；2.5 % of magnesium；Copper 2%；Zirconium 0.2%；0.2 % of iron；0.1 % of silicon；0.2 % of erbium；86.8 % of aluminium.
Formula four, zinc 9%；3.5 % of magnesium；Copper 2%；Zirconium 0.2%；0.2 % of iron；0.1 % of silicon；0.2 % of erbium；84.8 % of aluminium.
Formula five, zinc 8%；3.0 % of magnesium；Copper 2.5%；Zirconium 0.2%；0.2 % of iron；0.2 % of silicon；0.3 % of erbium；85.8 % of aluminium.
The preparation process of synchro converter ring comprises the following steps in the present embodiment：
A, alloy raw material is prepared：It is made ready beforehand for the aluminium block of the 99.9 weight % containing aluminium, the spelter of the 99.9 weight % containing zinc, containing magnesium
The MAG block of 99.9 weight %, the aluminum bronze intermediate alloy block of 50 weight % of cupric, the 5 weight % containing erbium/lanthanum/cerium aluminium-erbium/lanthanum/cerium among
The raw material of alloy block.
B, melting：Formed with the weight of aluminium, copper and erbium/lanthanum/cerium in any one formula of above-mentioned aluminium alloy, will be standby in step A
In good aluminium block, aluminum bronze intermediate alloy block and aluminium-erbium/lanthanum/cerium intermediate alloy block input melting furnace, 750 DEG C -770 is heated to
DEG C, skim after abundant fusing and add coverture.
C, in fusion process, temperature falls back to 720 DEG C, is formed with the weight of zinc in any one formula of aluminium alloy, adds step
Spelter is got ready in rapid A, and temperature continues to fall back to 700 DEG C, is formed with the weight of magnesium in any one formula of aluminium alloy, adds step A
In get MAG block ready, Slag treatment is taken off after dissolving；The step take off Slag treatment include before skimming should first on alloy molten liquid uniformly
Remove into ground flux, slag is separated with metal, be conducive to skim, can add in step A and get ready into alloy molten liquid after skimming
MAG block, while covered with ground flux, to prevent the scaling loss of magnesium.
D, degasification is refined：By being blown into chloroethanes into the alloy molten liquid obtained after step C, bubble is produced, bubble exists
In floating-upward process, dross inclusion adsorption and/or hydrogen, after the bubble floating for having adsorbed field trash and/or hydrogen is excluded to liquid level, reach
To degasification and slagging-off, refined.
E, skim and stand 20 minutes, be cooled to 680 DEG C of progress casting aluminium bar material.
F, aluminium bar processing is homogenized：The aluminium bar material that step E is obtained is placed in Homogenization Treatments stove and carries out Homogenization Treatments.
The step can be specially by the aluminium bar material that step E is obtained be placed in Homogenization Treatments stove into be about to stabilization rise to 450 DEG C -460
DEG C continue 24 it is small when, then be warming up to 470 DEG C -500 DEG C continue 2 it is small when.Handled by introducing two-step homogenization, aluminium can be closed
Each position mechanical property of gold reaches unanimity, and on the one hand can effectively reduce shear stress mutual inside Al-alloy products,
And then increase intensity, hardness and the toughness of Al-alloy products, it on the other hand can also be conducive to improve the uniformity of product, reduce
Face crack, and alloy is reached good casting character, machining property and throwing rotary light performance.
G, extruding or die forging：The aluminium bar material obtained in step F is placed in intermediate frequency furnace and is heated, and in being squeezed into mould
Type.The step can be specially the aluminium bar material that will be obtained in step F be placed in intermediate frequency furnace heat 430 degrees Celsius under continue 15 points
Clock, and in extrusion forming in mould, temperature is 400 DEG C wherein in mould.
H, the casting after shaping is demoulded, you can a seamless Al-alloy pipe is obtained,
I, the seamless Al-alloy pipe is carried out cutting ring, being warming up to 430 DEG C by intermediate frequency furnace preheats 15 minutes, is placed in forging die
Quenching carries out solution treatment to isothermal forging swaging immediately after on tool, then carries out quenching and carries out first time ageing treatment, Zhi Houting
Second of ageing treatment is carried out again after fire to natural cooling, warms naturally to 110 DEG C -130 DEG C again after secondary ageing is handled
Lower progress third time ageing treatment, when the processing time of third time ageing treatment is 36 small.Wherein, solution treatment described in this step
Treatment temperature be 470 DEG C -480 DEG C, processing time for 1 it is small when -2 it is small when.The processing of first time ageing treatment described in this step
Temperature be 120 DEG C -140 DEG C, processing time for 20 it is small when -30 it is small when.The treatment temperature of second of ageing treatment described in this step
For less than 0 degree Celsius, when processing time is 72 small.
In the present embodiment, by introducing the ageing treatment under solution treatment and three times different condition, can double ground it is strong
Change intensity, hardness and the toughness of synchro converter ring so that the synchro converter ring has the hardness of 220-230HB, 704MPa at the same time
Tensile strength, the excellent mechanical property of the yield strength of 670MPa, make intensity, hardness or toughness be obtained both with respect to the prior art
To very big lifting so that synchro converter ring product surface intensity and wearability greatly improve, and are conducive to improve synchronizer tooth
The quality and service life of ring product.
The alloy mechanical property test result handled by process above is as follows
| Sequence number | Hardness（HB） | Tensile strength（MPa） | Elongation（%） | Yield strength（MPa） |
| Formula one | 220-230 | 704 | 5 | 687 |
| Formula two | 215 | 656 | 14 | 618 |
| Formula three | 215 | 682 | 10.8 | 650 |
| Formula four | 215 | 660 | 10.3 | 649 |
| Formula five | 215 | 678 | 11.5 | 638 |
The embodiment of the present invention is above are only, but the design concept of the present invention is not limited thereto, it is all to utilize this
Conceive the change that unsubstantiality is carried out to the present invention, the behavior for invading the scope of the present invention should all be belonged to.
Claims (9)
1. hard, the high-strength, tenacity aluminum alloy of a kind of height, it is characterised in that the composition of the aluminium alloy includes：The zinc of 9 weight %；3.5 weight
Measure the magnesium of %；The copper of 2 weight %；The zirconium of 0.2 weight %；The iron of 0.2 weight %；The silicon of 0.1 weight %；The erbium of 0.2 weight %；84.8
The aluminium of weight %；And inevitable impurity；Its preparation method comprises the following steps：
A, alloy raw material is prepared：It is made ready beforehand for the aluminium block of the 99.9 weight % containing aluminium, the spelter of the 99.9 weight % containing zinc, containing 99.9 weight of magnesium
Measure the MAG block of %, the aluminum bronze intermediate alloy block of 50 weight % of cupric, the 5 weight % containing erbium aluminium-erbium intermediate alloy block raw material；
B, melting：Formed with the weight of aluminium, copper and erbium in the aluminium alloy, aluminium block, the aluminum bronze intermediate alloy that will be got ready in step A
In block and aluminium-erbium intermediate alloy block input melting furnace, 750 DEG C -770 DEG C are heated to, skims and adds after abundant fusing and cover
Lid agent；
C, in fusion process, temperature falls back to 720 DEG C, is formed with the weight of the zinc in aluminium alloy, adds in step A and gets zinc ready
Block, temperature are continued to fall back to 700 DEG C, are formed with the weight of the Magnesium in Aluminum Alloys, are added in step A and are got MAG block ready, wait to dissolve
After take off Slag treatment；
D, degasification is refined：By being blown into chloroethanes into the alloy molten liquid obtained after step C, bubble is produced, bubble is floating
During, dross inclusion adsorption and/or hydrogen, after the bubble floating for having adsorbed field trash and/or hydrogen is excluded to liquid level, reaches and remove
Gas and slagging-off, are refined；
E, skim and stand 20 minutes, be cooled to 680 DEG C of progress casting aluminium bar material；
F, aluminium bar processing is homogenized：The aluminium bar material that step E is obtained is placed in Homogenization Treatments stove and carries out Homogenization Treatments；
G, extruding or die forging：The aluminium bar material obtained in step F is placed in intermediate frequency furnace and is heated, and in extrusion forming in mould, or
The aluminium bar material obtained in step F is placed on special forging equipment by person to be molded blank using mould and obtains forging；
H, the casting after shaping is demoulded, so as to subsequent mechanical working process.
2. hard, the high-strength, tenacity aluminum alloy of height as claimed in claim 1, it is characterised in that：Further included in step C to skimming
Alloy molten liquid afterwards is sampled analysis, determines aluminum alloy chemical composition.
3. hard, the high-strength, tenacity aluminum alloy of height as claimed in claim 2, it is characterised in that：The step F includes obtaining step E
Aluminium bar material be placed in Homogenization Treatments stove into be about to stablize rise to 450 DEG C -460 DEG C continue 24 it is small when, then be warming up to 470
DEG C -500 DEG C continue 2 it is small when.
4. hard, the high-strength, tenacity aluminum alloy of height as claimed in claim 3, it is characterised in that：The step G is included in step F
The aluminium bar material of acquisition is placed in intermediate frequency furnace to heat continues 15 minutes under 430 degrees Celsius, and in extrusion forming in mould, wherein mould
Interior temperature is 400 DEG C.
5. hard, the high-strength, tenacity aluminum alloy of height as claimed in claim 4, it is characterised in that：The processing bag of skimming of the step C
Including before skimming should be such that slag is separated with metal, is conducive to skim first to uniformly removing into ground flux on alloy molten liquid, can after skimming
Added into alloy molten liquid in step A and get MAG block ready, while covered with ground flux, to prevent the scaling loss of magnesium.
6. a kind of high hard, high-strength, high-ductility synchro converter ring preparation method, it is characterised in that comprise the following steps：Using such as power
Profit requires the step A- steps H in high hard, high-strength, tenacity aluminum alloy the preparation method in 1-5 described in any one to prepare
One has high hard, high-strength, high-ductility seamless Al-alloy pipe, which is carried out to cut ring, is warming up to by intermediate frequency furnace
430 DEG C preheat 15 minutes, and being placed in isothermal forging swaging on forge die, quenching carries out solution treatment immediately after, is then quenched
First time ageing treatment is carried out, second of ageing treatment is carried out after ceasing fire afterwards to natural cooling again, is handled by secondary ageing
Warm naturally to carry out third time ageing treatment at 110 DEG C -130 DEG C again afterwards, the processing time of third time ageing treatment is small for 36
When.
A kind of 7. high hard, high-strength, high-ductility synchro converter ring preparation method as claimed in claim 6, it is characterised in that：It is described solid
The treatment temperature of molten processing be 450 DEG C -490 DEG C, processing time for 1 it is small when -2 it is small when.
A kind of 8. high hard, high-strength, high-ductility synchro converter ring preparation method as claimed in claim 7, it is characterised in that：Described
The treatment temperature of ageing treatment be 120 DEG C -140 DEG C, processing time for 20 it is small when -30 it is small when.
A kind of 9. high hard, high-strength, high-ductility synchro converter ring preparation method as claimed in claim 8, it is characterised in that：Described
The treatment temperature of secondary ageing processing is less than 0 degree Celsius, when processing time is 72 small.
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| CN106399776B (en) * | 2016-11-11 | 2018-05-01 | 佛山科学技术学院 | A kind of 800MPa grades of ultra-high-strength aluminum alloy and preparation method thereof |
| CN108749500A (en) * | 2018-06-14 | 2018-11-06 | 安庆市汇通汽车部件有限公司 | A kind of V-type distance rod and its manufacturing method |
| CN110699577A (en) * | 2019-11-19 | 2020-01-17 | 吉林工程技术师范学院 | Manufacturing method of high-strength aluminum alloy ring forging |
| CN111101034A (en) * | 2019-12-20 | 2020-05-05 | 山东南山铝业股份有限公司 | Low-rare-earth high-performance rare earth aluminum alloy and preparation method thereof |
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