CN104818411B - A kind of rare-earth-Al-Mg alloy material and preparation method thereof - Google Patents
A kind of rare-earth-Al-Mg alloy material and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of rare-earth-Al-Mg alloy material, the chemical composition and percentage by weight of the material are：Rare earth elements RE 0.08~0.35%；Mg 0.2~1.8%, other single impurity≤0.05%, impurity summation≤0.15%, surplus is aluminium.Wherein described rare earth element is selected from mixing more than one or both of lanthanum, cerium, yttrium, praseodymium, neodymium, erbium.The relatively common aluminium intensity of rare-earth-Al-Mg alloy material of the present invention is big, good percentage elongation, vertical arc property and its anti-wear performance are also preferable, it is produced can carry out the continuous production of endless because of the conventional machining process (extruding production after traction or casting) that addition rare earth addition breaches almag line bar using five wheel continuous casting and continuous rolling mills, so substantially increase production efficiency；Using the fast speed rolling of high temperature, so not only alloy easy-formation, raising construction machine productivity, the service life of extension device consumable accessory, and make it that alloy internal structure is even closer and perfect.
Description
Technical field
The present invention relates to a kind of rare-earth-Al-Mg alloy material and preparation method thereof, the material can not only prepare meet it is built on stilts or
The middle strength aluminium alloy pole stock of person's civil buildings industry, the requirement of wire rod, and can be widely applied to communication signal line, shielding line neck
Domain etc..
Background technology
The energy, it is safe and environment-friendly be the three big key issues for being related to human survival and development, aluminium has that density is small, ratio
Intensity and specific stiffness are high, corrosion-resistant, attractive and durable, to shape, can be surface-treated, recyclable regeneration, can save energy energy storage etc. one is
Row premium properties, popularization and application aluminium is the important channel for alleviating above-mentioned three major issues.Therefore aluminium is increasingly by people's
Favor, its application has spread to each department of national economy and people's life each side, and steel have been instead of in many occasions,
Copper material, timber and plastics, a kind of important foundation material as human society.
The production of existing middle strength aluminium alloy material is mainly by multiple after extrusion forming is formed or is drawn
Annealing is molded with drawing, and its production technology is excessively complicated cumbersome：Traction：Efficiency is low, and speed of production is slow, the line one day 8 of production capacity one
Ton, the ton hour of continuous casting and rolling 4, and need to repeatedly anneal, cause cost high；Extrusion forming：Hair in the middle of ingot casting heating, extruding
Expect, be cut into middle woollen, heating, secondary extrusion, wire production, batch, intermediate annealing, multiple wire drawing, cleaning or polishing, receive
Disk, qualified inspection, packing, delivery；Cause that stock utilization is low, produce many leftover pieces, production cost is too high, production technology mistake
Journey complexity is cumbersome.Therefore a kind of simple production process, the preparation method of the high middle strength aluminium alloy material of production efficiency are needed.
The content of the invention
In order to overcome the shortcoming of prior art, the invention provides a kind of technique is simple, production efficiency is high, middle intensity it is dilute
Native hydronalium and preparation method thereof.In order to realize that the technical purpose is adopted the following technical scheme that：
A kind of rare-earth-Al-Mg alloy material, the chemical composition and percentage by weight of the material are：
Rare earth elements RE 0.08~0.35%；Mg 0.2~1.8%, other single impurity≤0.05%, impurity summation≤
0.15%, surplus is aluminium.Micro rare earth element is added in aluminium alloy, the metallographic structure of aluminium alloy can be significantly improved, carefully
Change crystal grain, remove gas and objectionable impurities in aluminium alloy, eliminate and cast the defects such as loose and fire check, so as to improve alloy
Intensity, improves processing characteristics, improves the heat resistance of alloy, plasticity and resistance to deformation power, improve hardness, decay resistance and
Color, increases toughness, reduces alloy quenching sensitiveness, and addition of the rare earth in aluminium alloy is unsuitable too high, too raised to opposite work
With, it is too low and do not reach optimum efficiency, therefore addition mass percent optimal selection in the alloy：0.1~0.35%；Aluminium is dilute
Native intermediate alloy is provided by Inner Mongol rare earth research institute.
The rare-earth-Al-Mg alloy material of the present invention has the property that：
1st, intensity is big, good percentage elongation, and this aluminum alloy materials is in diameter 9.5mm, tensile strength：120~180Mpa, extension
Rate：More than 11%, common aluminium bar, tensile strength：95~140Mpa, elongation percentage：More than 6%, when diameter is less than 4.5mm, close
Gold thread material tensile strength：More than 200Mpa, elongation percentage：2~3%, common aluminium, tensile strength：140~190Mpa, elongation percentage：
1.0~1.5%, 2, hanging down, arc property is good, the ratio between complete total pull-off force of alloy high pressure twisted wire and its Unit Weight that this alloy is made
9.5Km, and during reinforcing bar aluminum stranded conductor that common aluminium is made, has always broken and the ratio between its Unit Weight 7Km, 3, high abrasion, the conjunction
The golden wear-resisting intensity Brinell hardness of product：More than 60HB, the common wear-resisting intensity Brinell hardness of aluminium：30~50HB.
Further, described rare-earth-Al-Mg alloy material, it is characterised in that rare earth elements RE 0.1~0.35%；Mg
0.2~1.8%, other single impurity≤0.05%, impurity summation≤0.15%, surplus is aluminium.
Preferably, the rare earth element is selected from mixing more than one or both of lanthanum, cerium, yttrium, praseodymium, neodymium, erbium.
On the other hand, present invention also offers a kind of preparation method of rare-earth-Al-Mg alloy material, it comprises the following steps：
Melting, aluminium alloy are prepared, refine and cast；Wherein：
1), melting：It is aluminium liquid by aluminium ingot melting, then imports aluminium liquid in holding furnace, is warming up to 740~760 DEG C, insulation
And stand；
2), aluminium alloy is prepared：By step 1) in aluminium liquid in holding furnace be transferred in refining furnace, sequentially add magnesium ingot and aluminium
Rare earth alloy, stirs, and aluminium alloy is made and controls the chemical composition and percentage by weight of the aluminium alloy to be：RE 0.08~
0.35%；Mg 0.2~1.8%, other single impurity≤0.05%, impurity summation≤0.15%, surplus is aluminium；
3), refine：The mixture of refining agent and nitrogen is sprayed into step 2 into refining furnace from refining furnace bottom) obtained
Aluminium alloy refined, coverture is added afterwards aluminium alloy is covered, and stood；
4), cast：By step 3) aluminium alloy that is obtained carries out degasification, slagging-off and purifies, flow into aluminium alloy pour afterwards
Cast in casting machine.
Specifically, the step 2) Al rare earth alloy middle rare earth percentage by weight control be 9~12%, so make dilute
The catharsis of soil, metamorphism, alloying action etc. reaches optimum efficiency.
Preferably, the melting step includes：Chute of the aluminium liquid by closing after fusing flows into holding furnace, is warming up to
740~760 DEG C, it is incubated and stands 20~40 minutes；And/or, the aluminium alloy preparation steps：Temperature of aluminum liquid in refining furnace exists
Magnesium ingot and Al rare earth alloy are sequentially added at 720~740 DEG C.
Further, the refinement step is：Refining agent and nitrogen mixture are sprayed into by refining furnace bottom and in stove
Moved in " well "；Refining is carried out in two times, and nitrogen pressure control is：0.1~0.2MPa, each refining time is 15~30min,
Refining temperature is controlled at 705~715 DEG C.
Further, 690~710 DEG C of aluminium alloy is flowed out to progress casting step after refining is finished from refining furnace, from
It is dual that chute with heating function of the aluminium alloy flowed out in refining furnace through closing enters progress coarse filtration, refined filtration in filter plant
Filtering, afterwards aluminium alloy flowed into by level, closed stopper noz(zle) and low temperature casting carried out in casting machine, cast temperature is 690~
700 DEG C, casting rate is 0.2~0.22 m/min, and cooling water temperature used is 20~35 DEG C during casting, and cold water pressure is 0.2
~0.35MPa, cooling water flow control is 80~100m3/h。
Further, the preparation method also includes milling step：Aluminium alloy, which enters to roll temperature control, to exist：530~560 DEG C,
Stand motor speed turns control at 490~510 revs/min, and the aluminium bar of the shaping of rolling goes out to roll speed：3~7.2 meter per seconds, go out to roll temperature
Degree：300~330 DEG C；Matched in proportion with water using aluminium and aluminum alloy continuous casting tandem rolling emulsion in the operation of rolling, wherein institute
It is 10~12% to state emulsion mass content in the mixed liquor of emulsion and water, and mixeding liquid temperature is 40~60 DEG C, mixed liquor stream
Measure and be：60~80m3/h。
Compared with prior art, the present invention has the advantages that：
1st, the preparation method of rare-earth-Al-Mg alloy material of the invention, because addition rare earth addition breakthrough breaches almag
The conventional machining process (extruding production after traction or casting) of line bar and endless can be carried out using five wheel continuous casting and continuous rolling mills
Continuous production, so substantially increases production efficiency.
2nd, the preparation method of rare-earth-Al-Mg alloy material of the invention uses the fast speed rolling of high temperature, so not only alloy easily into
Type, improves construction machine productivity, the service life of extension device consumable accessory, and make it that alloy internal structure is even closer and perfect.
So that the fine-processing technique such as follow-up drawing and extruding is simple to carry out annealing heat-treats side without the rod of metal alloy to rolling
It can be finished.
3. the production of the alloy wire (extrusion forming or traction) compared with traditional handicraft, mother metal has reached 99.9% profit
With, and can drawing after need not repeatedly annealing.
4th, the rare-earth-Al-Mg alloy strength of materials that preparation method of the present invention is obtained is big, good percentage elongation, this aluminum alloy materials
In diameter 9.5mm, under soft state state, its tensile strength：140~180Mpa, elongation percentage：More than 13%~20%, commonly
Aluminium bar is in the state of hard state, tensile strength：130~150Mpa, elongation percentage：6%~8%, when diameter is less than 4.5mm, close
Gold thread material tensile strength：More than 200Mpa, elongation percentage：2~3%, common aluminium, tensile strength：140~190Mpa, elongation percentage：
1.0~1.5%,
5th, the vertical arc property of the rare-earth-Al-Mg alloy material that preparation method of the present invention is obtained is good, the full alloy that this alloy is made
The ratio between the total pull-off force of high pressure twisted wire and its Unit Weight 9~11Km, and during reinforcing bar aluminum stranded conductor that common aluminium is made, always break
With 6~8Km of the ratio between its Unit Weight.
6th, the rare-earth-Al-Mg alloy material high abrasion that preparation method of the present invention is obtained, the wear-resisting intensity Bu Shi of the alloy product
Hardness：More than 60~100HRB, the common wear-resisting intensity Brinell hardness of aluminium：30~50HB.
Embodiment
In order that the object, technical solutions and advantages of the present invention definitely, are entered to the preferred embodiments of the present invention below
The detailed description of row.
Embodiment 1
A kind of rare-earth-Al-Mg alloy material of the present embodiment, it is prepared in accordance with the following steps：
(1) meltings：Al99.70E remelting electrician aluminium ingot is connected in the soaring smelting furnace that speed of melting is 8 ton hours
Continuous melting, the chute of the aluminium liquid of fusing by closing flow into 8 tons of capacity holding furnace (holding furnace provided with two dewatering outlets, 1,
First dewatering outlet is less than burner hearth bottom 5CM.2nd, the 2nd dewatering outlet is higher than burner hearth bottom 5CM) in heating it is (sharp in temperature-rise period
Covered with coverture, prevent the excessive scaling loss of aluminium liquid, and aluminium liquid inhales hydrogen) and it is incubated standing 30 minutes：Temperature is maintained at 740
~760 DEG C, temperature is too low, and the movable sexually inactive of metal, temperature are too high, and metal liquid easily inhales hydrogen.The purpose：Using each
The proportion of metal and impurity is different, light to float, sink again, and progress is simply purified inside.
(2) aluminium alloy is prepared：The 2nd dewatering outlet of holding furnace is opened, aluminium liquid is transferred in refining furnace, temperature of aluminum liquid exists
At 730 degree, magnesium ingot is sequentially added, AlRE10 stirs so that the abundant alloying of each element and homogenization, rod of metal alloy base master
The chemical composition content of alloy is wanted to control：Mg：0.2~1.8%, RE：0.1~0.35%.
(3) refine：By with the aluminium alloy got ready, sampling carries out direct-reading spectrometer and carries out chemical composition analysis, and its content reaches
To after requiring, refined；Method of refining：Special No. 2 refining agents of almag are mixed with the nitrogen of purity 99.99%, led to
Electronic refining duster is crossed, refining agent and mixed gas are sprayed into from the centimeters of burner hearth bottom 5, and is transported in stove in " well "
Dynamic, refining is carried out in two times, each refining agent 5KG, nitrogen pressure：0.1~0.2MPa, each refining time is 20min, refining
Temperature：710 ± 5 DEG C, refining dosage is few, air pressure is too low, and the time is not up to requirement, and temperature is too low, and its refining effect is not good, but its
The requirement of parameter superelevation, not only refining effect is not good, and side effect is played on the contrary；Refining is finished, and heats almag coverture pairing
Golden liquid covering, melt stands 20 minutes.Coverture and refining agent outsourcing.
(4) cast：700 ± 5 DEG C of aluminum alloy melt flows out from refining furnace dewatering outlet, by closing, slipping with heating
Groove, by online double-stage filtering case, reach online degasification, slagging-off and purification, after pass through horizontal, the stopper noz(zle) stream of closed
Five wheel type continuous casting machines for entering H types are crystallized, solidified and cooled down.
A, double-stage filtering case principle：Aluminium alloy reaches online degasification, slagging-off and purification by thick level and smart level double filtration
Effect.Coarse filtration：Using size 308, mesh number 30ppi German import ceramic filter plate, by thicker contaminant filter；Smart level mistake
Filter：Using size 508, mesh number 80ppi German import filter is so as to the catharsis for reaching degasification, removing the gred.
B, 700 ± 5 DEG C discharge water and closed heat the chute that is combined with flame and completely avoid aluminum alloy melt temperature
The hydrogen of suction again and oxygen uptake in stove (at present, most of chutes are all using open).
C, level, closed stopper noz(zle) prevent at stopper noz(zle) the suction hydrogen of aluminum alloy melt and the generation of oxide skin and are involved in aluminium
Alloy pig, influences product quality.(casting at present, used most of is all open type, and with crystallizing wheel into certain angle
The casting mode of degree).
D, low temperature casting, rapid crystallization cooled and solidified so that alloy pig crystal grain is more refined, (addition without rare earth this
Step is unable to reach, and rare earth can significantly improve the metallographic structure of aluminium alloy, crystal grain thinning, removes in aluminium alloy gas and harmful
Impurity, eliminates and casts the defects such as loose and fire check).Cast temperature：690~700 DEG C, casting rate：0.2~0.22 meter/
Minute, 20~35 DEG C of cooling water temperature, cold water pressure is 0.2~0.35MPa, cooling water flow：80~100m3/h.Join above
Number may be such that ingot casting crystal grain refinement, and alloy cooled and solidified alloying component is uniform, by conticaster institute shape when high temperature is cast
Ingot in echelon so that solidification is uneven, segregation, inside alloy ingot with outside crystal grain it is inconsistent and into
Divide uneven.
A, double-stage filtering case principle：Aluminium alloy reaches online degasification, slagging-off and purification by thick level and smart level double filtration
Effect.Coarse filtration：Using size 308, mesh number 30ppi German import ceramic filter plate, by thicker contaminant filter；Smart level mistake
Filter：Using size 508, mesh number 80ppi German import filter is so as to the catharsis for reaching degasification, removing the gred.
B, 700 ± 5 DEG C discharge water and closed heat the chute that is combined with flame and completely avoid aluminum alloy melt temperature
The hydrogen of suction again and oxygen uptake in stove (at present, most of chutes are all using open).
C, level, closed stopper noz(zle) prevent at stopper noz(zle) the suction hydrogen of aluminum alloy melt and the generation of oxide skin and are involved in aluminium conjunction
Ingot, influences product quality.(it is all open type that the casting at present, used is most of, and angled with crystallizing wheel
Casting mode).Low temperature is cast, and rapid crystallization cooled and solidified is so that alloy pig crystal grain is more refined, (the addition without rare earth
This step is unable to reach, and rare earth can significantly improve the metallographic structure of aluminium alloy, crystal grain thinning, removes in aluminium alloy gas and has
Evil impurity, eliminates and casts the defects such as loose and fire check).Cast temperature：680~690 DEG C, casting rate：0.2~0.22
M/min, 20~35 DEG C of cooling water temperature, cold water pressure is 0.2~0.35MPa, cooling water flow：80~100 cubes/small
When.Above parameter may be such that ingot casting crystal grain refinement, and alloy cooled and solidified alloying component is uniform, due to even when high temperature is cast
Casting machine forms trapezoidal ingot, so that solidification is uneven, segregation, alloy ingot the inside is differed with outside crystal grain
Show and uneven components.
(5) roll：The fast speed rolling of high temperature, because the intensity and hardness of rod of metal alloy are all higher, it is therefore necessary to take high temperature
Fast speed rolling, the fast speed rolling of high temperature not only makes alloy easy-formation, improves construction machine productivity, the use longevity of extension device consumable accessory
Life, and make it that alloy internal structure is even closer and perfect, it is often more important that：So that alloy obtains more perfect processability
Can so that the fine-processing technique such as follow-up drawing and extruding is simple, carried out without the rod of metal alloy to rolling at annealing heat
Reason can be finished, so as to improve production efficiency.Aluminium alloy enters to roll temperature：530~560 DEG C, stand motor rotating speed 490~
510 revs/min, progress is matched to equipment using WD-6 aluminium and aluminum alloy continuous casting tandem rolling emulsion on request with water in the operation of rolling
And lubrication and the cooling of alloy pig, emulsion mass content is 10~12, % in the mixed liquor of emulsion and water, mixes liquid temperature
Spend for 50 ± 10 DEG C, mix flow quantity：60~80m3/ h, rolling is alternateed by above the first and second road vertical and horizontal formulas
The double-roller type of rolling is rolled, behind rolling pass rolled using the roll-type of Y types 3, the alloy shank diameter of roll forming can
Determined according to the rolling pass quantity taken：Diameter 15mm, 12mm, 9.5mm can be rolled；The aluminium bar of the shaping of rolling goes out to roll speed
Degree：3~7.2 meter per seconds, go out to roll temperature：300~330 DEG C.
By determining, rare-earth-Al-Mg alloy material made from the present embodiment, its chemical composition is：Rare earth element
RE0.25%；Magnesium Mg0.65%, silicon Si0.02%, copper Cu≤0.005%, other single impurity≤0.05% of chromium Cr0.02%,
Impurity summation≤0.15%, surplus is aluminium.
The properties of rare earth ferro-aluminum copper alloy wire made from the present embodiment are detected, it is as a result as follows：
Detection method：ARUN PolySpek-J direct-reading spectrometers, WDL-50 electronic type universal material testing machines, DX200H
Full-automatic direct current resistance measurer, 560RSS shows Rockwell apparatus totally；Detect data：
Alloy material is under normal temperature, normal pressure state, its tensile strength of diameter 9.5mm：145MPa, elongation：15%,；20℃
D.C. resistance：32.65n Ω mm2.m, 20 DEG C of conductances：53.0%IACS (ask the Chinese full name of polishing this be conductance unit symbol
Number), diameter 3.05mm, tensile strength：215Mpa, elongation：2.5%, 20 DEG C of D.C. resistances：32.95n Ω mm2.m, 20 DEG C are led
Electric rate：52.6%IACS.The wear-resisting intensity Rockwell hardness of the present embodiment alloy product is 65HRB.
The aluminium alloy rod that aforesaid way is provided can directly be drawn, and the rod of metal alloy of diameter 9.5 is passed through into slip or non-
Sliding type aluminum and the continuous big or middle drawbench of aluminium alloy draw and can such as be drawn into aluminium directly into different size and the alloy wire of shape
Alloy round wires middle need not repeatedly anneal and once be drawn to：Such as 1.0~6.6mm of diameter or other shapes.B, such as
Continuous annealing need to be carried out when aluminum alloy wire drawing is to a diameter of 1.0mm by aluminum alloy wire drawing into a diameter of 0.2mm, annealed
Temperature：350 DEG C, time：1~2h.
The production of existing middle strength aluminium alloy material is mainly by multiple after extrusion forming is formed or is drawn
Annealing is molded with drawing, and its production technology is excessively complicated cumbersome：Traction：Efficiency is low, and speed of production is slow, the line one day 8 of production capacity one
Ton, the ton hour of continuous casting and rolling 4, and need to repeatedly anneal, cause cost high；Extrusion forming：Hair in the middle of ingot casting heating, extruding
Expect, be cut into middle woollen, heating, secondary extrusion, wire production, batch, intermediate annealing, multiple wire drawing, cleaning or polishing, receive
Disk, qualified inspection, packing, delivery；Cause that stock utilization is low, produce many leftover pieces, production cost is too high, production technology mistake
Journey complexity is cumbersome.And middle strength aluminium alloy material, the process simplification of my company's production, aluminium alloy smelting, continuous casting and rolling, aluminium are closed
Golden bar base, semi-finished product, continuous drawing, finished product, packing.
The aluminum alloy materials are widely used in the aluminium of the industries such as electric wire, communication signal, industry and residential hardware
The application of alloy material.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is directed to art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.Repaiied according to the acclimation method or the ecosystem of the present invention
Compound method, simply changes species, is also within protection scope of the present invention.
Claims (6)
1. a kind of preparation method of rare-earth-Al-Mg alloy material, it is characterised in that it comprises the following steps：Melting, aluminium alloy are matched somebody with somebody
System, refining and casting；The chemical composition and percentage by weight of the rare-earth-Al-Mg alloy material be：
Rare earth elements RE 0.08~0.35%；Mg 0.2~2.0%, other single impurity≤0.05%, impurity summation≤
0.15%, surplus is aluminium；Wherein described rare earth element is selected from more than one or both of lanthanum, cerium, yttrium, praseodymium, neodymium, erbium mixed
Close；
Wherein：
1), melting：It is aluminium liquid by aluminium ingot melting, then imports aluminium liquid in holding furnace, be warming up to 740~760 DEG C, is incubated and quiet
Put；
2), aluminium alloy is prepared：By step 1) in aluminium liquid in holding furnace be transferred in refining furnace, sequentially add magnesium ingot and aluminium rare earth
Alloy, stirs, and aluminium alloy is made and controls the chemical composition and percentage by weight of the aluminium alloy to be：RE0.08~
0.35%；Mg 0.2~1.8%, other single impurity≤0.05%, impurity summation≤0.15%, surplus is aluminium；
3), refine：The mixture of refining agent and nitrogen is sprayed into step 2 into refining furnace from refining furnace bottom) conjunction that is obtained
Golden liquid is refined, and coverture is added afterwards aluminium alloy is covered, and stood；
4), cast：By step 3) 700 ± 5 DEG C of aluminium alloy being obtained flows out from refining furnace dewatering outlet, by closing, band
There is the chute of heating, carry out degasification, slagging-off by online double-stage filtering case and purify, aluminium alloy is flowed into horizontal afterwards,
The stopper noz(zle) of closed is flowed into is cast in five wheel type continuous casting machines of H types；
The preparation method also includes milling step：Aluminium alloy, which enters to roll temperature control, to exist：530~560 DEG C, stand motor speed turns control
System is at 490~510 revs/min, and the aluminium bar of the shaping of rolling goes out to roll speed：3~7.2 meter per seconds, go out to roll temperature：300~330 DEG C；
Matched in proportion with water using aluminium and aluminum alloy continuous casting tandem rolling emulsion in the operation of rolling, wherein the emulsion and water
Emulsion mass content is 10~12% in mixed liquor, and mixeding liquid temperature is 40~60 DEG C, and mixing flow quantity is：60~80m3/
h。
2. preparation method according to claim 1, it is characterised in that the step 2) Al rare earth alloy middle rare earth weight
It is 9~12% to measure percentage control.
3. preparation method according to claim 1, it is characterised in that the rare earth element is selected from lanthanum, cerium, yttrium, praseodymium, neodymium,
Mixing more than one or both of erbium.
4. preparation method according to claim 1, it is characterised in that the melting step includes：Aluminium liquid warp after fusing
The chute for crossing closing flows into holding furnace, is warming up to 740~760 DEG C, is incubated and stands 20~40 minutes；And/or, the aluminium alloy
Preparation steps：Temperature of aluminum liquid in refining furnace sequentially adds magnesium ingot and Al rare earth alloy at 720~740 DEG C.
5. preparation method according to claim 1, it is characterised in that the refinement step is：Refining agent is mixed with nitrogen
Compound is sprayed into by refining furnace bottom and moved in stove in " well "；Refining is carried out in two times, and nitrogen pressure control is：
0.1~0.2MPa, each refining time is 15~30min, and refining temperature is controlled at 705~715 DEG C.
6. preparation method according to claim 1, it is characterised in that refining finish after by 690~710 DEG C of aluminium alloy from
Outflow carries out casting step in refining furnace, and chute with heating function of the aluminium alloy flowed out from refining furnace through closing enters
Coarse filtration, refined filtration double filtration are carried out in filter plant, aluminium alloy flows into enter in casting machine by level, closed stopper noz(zle) afterwards
Row low temperature is cast, and cast temperature is 690~700 DEG C, and casting rate is 0.2~0.22 m/min, coolant water temperature used during casting
Spend for 20~35 DEG C, cold water pressure is 0.2~0.35MPa, cooling water flow control is 80~100m3/h。
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| CN111321326B (en) * | 2020-04-29 | 2022-03-01 | 上海交通大学 | Al-RE-Y-Mg alloy and preparation method thereof |
| CN113373353A (en) * | 2021-04-29 | 2021-09-10 | 百色市广百金属材料有限公司 | Erbium-containing aluminum-magnesium alloy wire and production method thereof |
| CN113249623B (en) * | 2021-06-16 | 2022-07-26 | 广西隆林利通线缆科技有限公司 | Aluminum magnesium alloy wire and method for producing same |
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