CN109055834A - A kind of aluminium alloy cast rod and its melting and casting method of addition scandium and manganese element - Google Patents
A kind of aluminium alloy cast rod and its melting and casting method of addition scandium and manganese element Download PDFInfo
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- CN109055834A CN109055834A CN201810853643.9A CN201810853643A CN109055834A CN 109055834 A CN109055834 A CN 109055834A CN 201810853643 A CN201810853643 A CN 201810853643A CN 109055834 A CN109055834 A CN 109055834A
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- aluminium
- added
- crucible
- aluminium alloy
- alloy
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/003—Aluminium alloys
-
- 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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
Abstract
The invention discloses a kind of aluminium alloy cast rods for adding scandium and manganese element, it includes the following components'mass percentage: Zn:10.95~11.55%, Mg:2.1~2.3%, Mn:0.45~0.55%, Sc:0.1~0.2%, Cu:1.5~2.5%, Ti:0.014~0.016%, B:0.014~0.016%, Be:0.003~0.004%, Zr:0.07~0.09%, surplus is Al, aluminium alloy cast rod defect is few, material property gets a promotion, and meets the requirement of aviation field, ship domain to the mechanical performance and corrosion resistance of aluminium alloy；And rare earth scandium element is added in proportion, promotes the intensity, hardness, welding performance, corrosion resistance of aluminium alloy bars；The invention also discloses the method for smelting of the aluminium alloy cast rod, the uniformity coefficient in aluminium alloy between each constituent can be improved, improve the stability and compactness of the aluminium bar produced, remove extra impurity；The invention also discloses the casting methods of the aluminium alloy cast rod, can be improved casting efficiency, the generation for reducing energy consumption, reducing waste water.
Description
[technical field]
The present invention relates to a kind of aluminium alloy cast rods for adding scandium and manganese element, and the invention further relates to a kind of addition scandiums and manganese member
The method of smelting and casting method of the aluminium alloy cast rod of element.
[background technique]
Al-Zn-Mg-Cu aluminum alloy is heat-treatable strengthened high-strength deformation extra super duralumin alloy, with its low-density, height
The advantages that intensity, high tenacity and good corrosion resistance, is widely used in the fields such as aerospace, military project, ocean.
But Al-Zn-Mg-Cu aluminum alloy, if method selection is improper, can make casting rod during melting and casting
Many unnecessary defects are generated, the mechanical performance for being mainly reflected in finished product is unstable, grain coarsening etc., because of the invention one
The suitable casting method of kind is to be highly desirable for the field of smelting of Al-Zn-Mg-Cu aluminum alloy come the defect for reducing casting rod
's.
Scandium element is one of rare earth element, added in the smelting process of aluminium alloy gold it is micro can promote crystal grain refinement, mention
250 DEG C~280 DEG C of high recrystallization temperature, be the strong grain refiner of aluminium alloy and effective recrystallization inhibitor, pairing
The structure and performance of gold generate apparent influence, its intensity, hardness, welding performance, corrosion resistance etc. is made to be greatly improved；
Scandium has good dispersion-strengthened action to aluminium, keeps stable non-recrystallized structure in hot-working or annealed state；
Scandium can eliminate the recrystallized structure of weld heat-affected zone, the subgrain tissue of matrix can direct transition to the inhibiting effect of recrystallization
To the as-cast structure of weld seam, the welding point of Mo-bearing granitoid is made to have high intensity and corrosion resistance.
[summary of the invention]
In order to solve the above technical problems, the aluminium alloy cast rod of a kind of addition scandium and manganese element of the invention, it is characterised in that
It includes the following components'mass percentage: Zn:10.95~11.55%, Mg:2.1~2.3%, Mn:0.45~0.55%, Sc:
0.1~0.2%, Cu:1.5~2.5%, Ti:0.014~0.016%, B:0.014~0.016%, Be:0.003~
0.004%, Zr:0.07~0.09%, surplus Al.
The present invention also provides the method for smelting of a kind of addition scandium and the aluminium alloy cast rod of manganese element, include the following steps:
A, it ingredient: calculates aluminium alloy stock dosage and prepares raw material according to the proportion；
B, it heats aluminium material: aluminium material being added in smelting furnace, and is heated to 760~780 DEG C；
C, scandium bearing master alloy is added: keeping crucible in-furnace temperature at 750~760 DEG C, alumal is added, and stir 2
~3min；
D, aluminium manganese intermediate alloy is added: keeping crucible in-furnace temperature at 750~760 DEG C, alumal is added, and stir 2
~3min；
E, aluminum bronze intermediate alloy is added: keeping crucible in-furnace temperature at 730~740 DEG C, aluminum bronze intermediate alloy is added, and stir
Mix 3min~5min；
F, aluminium zirconium hardener is added: keeping crucible in-furnace temperature at 730~740 DEG C, aluminium zirconium hardener is added, and stir
Mix 3min~5min；
G, zinc ingot metal and aluminium beryllium alloy is added: keeping crucible in-furnace temperature at 730~740 DEG C, by 2~3 additions of zinc ingot metal point
In crucible furnace, and the half of aluminium beryllium intermediate alloy ingredient is added in crucible furnace, often plus a defective material stirs 3~5min；
H, thermometric and temperature control: control crucible in-furnace temperature is at 710~720 DEG C；
I, magnesium ingot is added: being kept for 710~720 DEG C of crucible in-furnace temperature, magnesium ingot is added using pressure magnesium bell jar, and be sprinkled into covering
4min~5min is stirred in agent；
J, add refining agent for the first time: maintaining 710~720 DEG C of temperature, stir 2~3min after refining agent is added, after skimming, take
Sample detects alloy composition；
K, it is vacuum-treated: keeping 1100~1300Pa of vacuum degree, 710~720 DEG C of temperature, maintain 25~35min；
L, aluminium beryllium intermediate alloy is added: keeping crucible in-furnace temperature at 710~720 DEG C, it will be in aluminium beryllium intermediate alloy ingredient
Remaining half is added in crucible furnace, stirs 4min~5min；
M, aluminium titanium boron is added: being kept for 710~720 DEG C of melting in-furnace temperature, stirs 4min~5min after aluminium titanium boron is added；
N, second plus refining agent: being kept for 710~720 DEG C of melting in-furnace temperature, stirs 2~3min after refining agent is added；
P, it stands: keeping in crucible furnace 720~730 DEG C of temperature, keep 9~11min.
The method of smelting of the aluminium alloy cast rod of a kind of addition scandium and manganese element as described above, it is characterised in that in step B
Aluminium material uses refined aluminium.
The present invention also provides the casting methods of a kind of addition scandium and the aluminium alloy cast rod of manganese element, include the following steps:
Aluminum alloy melt after standing in step N in the method for smelting of above-mentioned addition scandium and the aluminium alloy cast rod of manganese element is used and is partly connected
Continuous casting is cast, casting temperature be 695~715 DEG C, casting speed be 27~31mm/min, hydraulic pressure be 0.01~
0.03Mpa, water temperature are less than or equal to 25 DEG C.
The present invention has the advantage that
1, the aluminium alloy cast rod of a kind of addition scandium and manganese element of the invention, aluminium alloy cast rod defect is few, and material property obtains
To promotion, meet the requirement of aviation field, ship domain to the mechanical performance and corrosion resistance of aluminium alloy；And add in proportion
Add rare earth scandium element, can thinning microstructure crystal grain, promote the intensity, hardness, welding performance, corrosion resistance of aluminium alloy bars.
2, the aluminium alloy cast rod method of smelting of a kind of addition scandium and manganese element of the invention, can be improved each group in aluminium alloy
At the uniformity coefficient between ingredient, the stability and compactness of the aluminium bar produced are improved, extra impurity is removed.
3, the aluminium alloy cast rod casting method of a kind of addition scandium and manganese element of the invention can be improved casting efficiency, drop
Low energy consumption, the generation for reducing waste water.
[specific embodiment]
It elaborates below to embodiments of the present invention.
The aluminium alloy cast rod of a kind of the addition scandium and manganese element of the present embodiment comprising the component of following mass percent:
Zn:10.95~11.55%, Mg:2.1~2.3%, Mn:0.45~0.55%, Sc:0.1~0.2%, Cu:1.5~2.5%,
Ti:0.014~0.016%, B:0.014~0.016%, Be:0.003~0.004%, Zr:0.07~0.09%, surplus are
Al。
It is the proportion of applicant in process of production: Zn:11%, Mg:2.2%, Mn:0.5%, Sc below:
0.15%, Cu:2%, Ti:0.015%, B:0.015%, Be:0.004%, Zr:0.08%, surplus Al.
During cast aluminium alloy gold casting rod, the melting to aluminium alloy is and its important step in the present embodiment, to add
The method of smelting for adding the aluminium alloy cast rod of scandium and manganese element, includes the following steps:
A, it ingredient: calculates aluminium alloy stock dosage and prepares raw material according to the proportion；
B, it heats aluminium material: aluminium material being added in smelting furnace, and is heated to 780 DEG C；
C, scandium bearing master alloy is added: keeping crucible in-furnace temperature at 760 DEG C, alumal is added, and stir 3min；
D, aluminium manganese intermediate alloy is added: keeping crucible in-furnace temperature at 760 DEG C, alumal is added, and stir 3min；
E, aluminum bronze intermediate alloy is added: keeping crucible in-furnace temperature at 740 DEG C, aluminum bronze intermediate alloy is added, and stir
5min；
F, aluminium zirconium hardener is added: keeping crucible in-furnace temperature at 740 DEG C, aluminium zirconium hardener is added, and stir
5min；
G, zinc ingot metal and aluminium beryllium intermediate alloy is added: keeping crucible in-furnace temperature at 740 DEG C, zinc ingot metal is added three times crucible
In furnace, and the half of aluminium beryllium intermediate alloy ingredient is added in crucible furnace, often plus a defective material stirs 5min；
H, thermometric and temperature control: control crucible in-furnace temperature is at 720 DEG C；
I, magnesium ingot is added: being kept for 720 DEG C of crucible in-furnace temperature, magnesium ingot is added using pressure magnesium bell jar, and be sprinkled into coverture, stirs
Mix 5min；
J, add refining agent for the first time: maintaining 720 DEG C of temperature, stir 3min after refining agent is added, after skimming, sample detection is closed
Golden chemical component；
K, it is vacuum-treated: keeping vacuum degree 1200Pa, 720 DEG C of temperature, maintain 35min；
L, aluminium beryllium intermediate alloy is added: keeping crucible in-furnace temperature at 720 DEG C, it will be remaining in aluminium beryllium intermediate alloy ingredient
Half is added in crucible furnace, stirs 5min；
M, aluminium titanium boron is added: being kept for 720 DEG C of melting in-furnace temperature, stirs 5min after aluminium titanium boron is added；
N, it second plus refining agent: is kept for 720 DEG C of melting in-furnace temperature, stirs 3min after refining agent is added；
P, it stands: keeping in crucible furnace 720 DEG C of temperature, keep 10min.
In order to reduce the generation of impurity, aluminium material uses refined aluminium in stepb.
The casting method of the aluminium alloy cast rod of scandium and manganese element is added, casting is using semi-continuous casting method to quiet in step P
Aluminum alloy melt after setting is cast, main casting parameter are as follows: casting temperature is 695~720 DEG C, and casting speed is
28mm/min, hydraulic pressure are 0.01~0.03Mpa, and water temperature is less than or equal to 25 DEG C.Speed of starting 30mm/min, subtracts when casting onto 50mm
Speed is to 28mm/min.Casting carries out tempering after finishing.
The early-stage preparations of casting have:
1, prepare tooling: in the preceding slot of casting machine, flow tube, funnel, the good coating of slag hitting scrubbing brush, and being dried at 500 DEG C or more
The column of casting machine is brushed lubricating oil by dry no less than 2h, and preceding slot filter uses 4.
2, crystallizer pad pasting: crystallizer is cleaned out.The ceramic fiber blanket cut is pasted on crystallizer surface, altogether
3 layers of patch, 50~60mm of pad pasting height, every layer of pad pasting is compressed after posting using tool, and drying time 30 minutes, every casting was once answered
Replace a pad pasting.
3, check that whether there is or not blockings for crystallizer hole for water spraying before casting.
Claims (4)
1. a kind of aluminium alloy cast rod for adding scandium and manganese element, it is characterised in that include the following components'mass percentage: Zn:
10.95~11.55%, Mg:2.1~2.3%, Mn:0.45~0.55%, Sc:0.1~0.2%, Cu:1.5~2.5%, Ti:
0.014~0.016%, B:0.014~0.016%, Be:0.003~0.004%, Zr:0.07~0.09%, surplus Al.
2. the aluminium alloy cast rod of addition scandium and manganese element described in a kind of claim 1 according to claim 1 is molten
Smelting method, it is characterised in that include the following steps:
A, it ingredient: calculates aluminium alloy stock dosage and prepares raw material according to the proportion；
B, it heats aluminium material: aluminium material being added in smelting furnace, and is heated to 760~780 DEG C；
C, scandium bearing master alloy is added: keeping crucible in-furnace temperature at 750~760 DEG C, addition alumal, and stirring 2~
3min；
D, aluminium manganese intermediate alloy is added: keeping crucible in-furnace temperature at 750~760 DEG C, addition alumal, and stirring 2~
3min；
E, aluminum bronze intermediate alloy is added: keeping crucible in-furnace temperature at 730~740 DEG C, aluminum bronze intermediate alloy is added, and stir
3min~5min；
F, aluminium zirconium hardener is added: keeping crucible in-furnace temperature at 730~740 DEG C, aluminium zirconium hardener is added, and stir
3min~5min；
G, zinc ingot metal and aluminium beryllium alloy is added: keeping crucible in-furnace temperature at 730~740 DEG C, by 2~3 addition crucibles of zinc ingot metal point
In furnace, and the half of aluminium beryllium intermediate alloy ingredient is added in crucible furnace, often plus a defective material stirs 3~5min；
H, thermometric and temperature control: control crucible in-furnace temperature is at 710~720 DEG C；
I, magnesium ingot is added: being kept for 710~720 DEG C of crucible in-furnace temperature, magnesium ingot is added using pressure magnesium bell jar, and be sprinkled into coverture,
Stir 4min~5min；
J, add refining agent for the first time: maintaining 710~720 DEG C of temperature, stir 2~3min after refining agent is added, after skimming, sampling is examined
Survey alloy composition；
K, it is vacuum-treated: keeping 1100~1300Pa of vacuum degree, 710~720 DEG C of temperature, maintain 25~35min；
L, aluminium beryllium intermediate alloy is added: keeping crucible in-furnace temperature at 710~720 DEG C, it will be remaining in aluminium beryllium intermediate alloy ingredient
Half be added in crucible furnace, stir 4min~5min；
M, aluminium titanium boron is added: being kept for 710~720 DEG C of melting in-furnace temperature, stirs 4min~5min after aluminium titanium boron is added；
N, second plus refining agent: being kept for 710~720 DEG C of melting in-furnace temperature, stirs 2~3min after refining agent is added；
P, it stands: keeping in crucible furnace 720~730 DEG C of temperature, keep 9~11min.
3. the method for smelting of the aluminium alloy cast rod of a kind of addition scandium according to claim 2 and manganese element, it is characterised in that
Aluminium material uses refined aluminium in step B.
4. a kind of casting method of the aluminium alloy cast rod of addition scandium and manganese element, includes the following steps: above-mentioned addition scandium and manganese
Aluminum alloy melt after standing in step P in the method for smelting of the aluminium alloy cast rod of element is cast using semi-continuous casting method
Make, casting temperature be 695~715 DEG C, casting speed be 27~31mm/min, hydraulic pressure be 0.01~0.03Mpa, water temperature be less than or
Equal to 25 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810853643.9A CN109055834A (en) | 2018-07-30 | 2018-07-30 | A kind of aluminium alloy cast rod and its melting and casting method of addition scandium and manganese element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810853643.9A CN109055834A (en) | 2018-07-30 | 2018-07-30 | A kind of aluminium alloy cast rod and its melting and casting method of addition scandium and manganese element |
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| Publication Number | Publication Date |
|---|---|
| CN109055834A true CN109055834A (en) | 2018-12-21 |
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|---|---|---|---|
| CN201810853643.9A Pending CN109055834A (en) | 2018-07-30 | 2018-07-30 | A kind of aluminium alloy cast rod and its melting and casting method of addition scandium and manganese element |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068943A (en) * | 2004-10-05 | 2007-11-07 | 阿勒里斯铝业科布伦茨有限公司 | High strength, high toughness a1-zn alloy product and method for producing such product |
| CN105734369A (en) * | 2016-04-21 | 2016-07-06 | 辽宁忠旺集团有限公司 | Hot top casting process for phi 784-mm 7xxx-series superhard aluminum alloy round bar |
-
2018
- 2018-07-30 CN CN201810853643.9A patent/CN109055834A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068943A (en) * | 2004-10-05 | 2007-11-07 | 阿勒里斯铝业科布伦茨有限公司 | High strength, high toughness a1-zn alloy product and method for producing such product |
| CN105734369A (en) * | 2016-04-21 | 2016-07-06 | 辽宁忠旺集团有限公司 | Hot top casting process for phi 784-mm 7xxx-series superhard aluminum alloy round bar |
Non-Patent Citations (1)
| Title |
|---|
| 有色金属材料速查手册: "《有色金属材料速查手册》", 31 July 2009, 20090731 * |
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Application publication date: 20181221 |