CN109468475A - A kind of production technology of high-strength 6 line aluminium alloy casting rod - Google Patents
A kind of production technology of high-strength 6 line aluminium alloy casting rod Download PDFInfo
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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Abstract
The invention belongs to the preparation fields of rods and bars of aluminium alloy, are related to a kind of production technology of high-strength 6 line aluminium alloy casting rod, the Al prepared with presently disclosed technique5CuTi2Fining agent replaces existing common Al-Ti-B refiner, by the molten aluminum melting refining after melting, prepare good aluminium alloy cast ingot, the crystallite dimension of aluminium alloy can be reduced greatly in aluminium alloy cast ingot, and aluminium alloy crystal grain can be reduced to 20~80 μm, other eutectic grains can be reduced to 9 μm or so, structural constituent inside aluminium alloy cast ingot is more preferably uniform, the phenomenon that reducing aluminium ingot face crack, the mechanical strength and yield rate of aluminium alloy cast ingot are improved, yield rate can reach 99%.
Description
Technical field
The invention belongs to the preparation fields of rods and bars of aluminium alloy, are related to a kind of production technology of high-strength 6 line aluminium alloy casting rod.
Background technique
During melting and casting, the hydrogen atom dissolved in melt is easy shape after being precipitated in casting solidification for aluminium and aluminium alloy
At bubble, aluminium and aluminium alloy cast ingot or casting is caused to generate defect.Melt and air reaction form oxygen in fusion process simultaneously
Compound, being involved in melt leads to the reduction of its degree of purity, if not being removed in postorder production, forms oxygen in ingot casting or casting
Compound is mingled with, and influences product properties.Therefore hydrogen content and removing must be reduced by refining treatment in aluminium and aluminium alloy production
Field trash.Aluminium and aluminium alloy are during casting solidification, if without additional grain refiner.There is no heterogeneous shape in melt then
Core influences ingot casting or cast properties then will lead to coarse grains in process of setting.
In the preparation process of aluminium alloy cast ingot, in order to reduce the size of hardening constituent in aluminium alloy cast ingot, the prior art,
Aluminium titanium boron wire fining agent is added during aluminum anodizing usually into solution to reduce the size of hardening constituent in aluminium alloy cast ingot, but
It is that the existing aluminium titanium boron wire fining agent of 6 line aluminium alloy cast ingot processes addition can generate a small amount of bubble, so that group inside aluminium alloy cast ingot
It knits and is unevenly distributed, be easy to produce crackle, the aluminium alloy extrusions mechanical property finally prepared cannot reach production requirement, therefore have
Necessity develops the new fining agent of one kind and replaces Al-Ti-B refiner and the method by the fining agent cast aluminium alloy gold casting rod.
Summary of the invention
In view of this, the present invention can generate bubble to solve existing 6 line aluminium alloy during ingot casting, so that aluminium closes
The problem of golden inside ingot Tissue distribution is uneven, is easy to produce crackle provides a kind of production work of high-strength 6 line aluminium alloy casting rod
Skill, can greatly reduce the generation of bubble during ingot casting by the production technology, reduce the probability of ingot casting crackle, improve at
Product rate.
In order to achieve the above objectives, the present invention provides a kind of production technology of high-strength 6 line aluminium alloy casting rod, including following step
It is rapid:
It A, is liquid aluminium alloy, melting by melting after uniform stirring mixing in prepared aluminium alloy stock addition smelting furnace
Temperature is 710~760 DEG C；
B, will in smelting furnace be added refining agent refine, refining temperature be 730~740 DEG C, refining time be 15~
20min, the molten aluminum after refining stands 30~40min, passes through electromagnetic mixing apparatus uniform stirring simultaneously in refining process, wherein essence
Refine the dosage requirement of agent are as follows: 0.7~1.0kg/t Al；
C, fining agent will be added in the molten aluminum smelting furnace after refining and carry out online refinement, the additive amount of fining agent is 0.5~
1.0kg/tAl, the wherein preparation process of fining agent are as follows:
A, Al is prepared by gas atomization device5CuTi2, Al5CuTi21500~1600 DEG C of melting temperature, gas atomization
The nozzle diameter of device is 2~3mm, and the high-pressure gas pressure of gas atomization device is 4~5Mpa, the amount of substance of Al, Cu and Ti
The ratio between be 5: 1: 2；
B, by the Al of above-mentioned preparation5CuTi275~150 μm of particle is selected with sieve classification；
C, by the Al of above-mentioned screening5CuTi2It is mixed with the aluminium of purity >=99.9% according to 1: 9 ratio, and into mixture
It is uniformly mixed after 0.2~0.5 part of stearate is added；
D, said mixture is prepared into fining agent by the sintering of plasma sintering device, wherein sintering temperature is 500
~600 DEG C, 1.67 DEG C/sec of heating rate, sintering time 5min, briquetting pressure 45MPa；
D, the molten aluminum after refinement is filtered by foamed ceramic filter plate；
E, secondary removal of impurities is carried out to molten aluminum in smelting furnace using graphite rotator, is passed through high purity inert gas conduct in smelting furnace
Protective gas, the revolving speed of graphite rotator are 350~400r/min, and melt temperature is 725~730 DEG C, and the hydrogen content of melt controls
Within 0.12ml/100gAl；
F, the molten aluminum after secondary removal of impurities is transferred in founding standing furnace, semi-continuous casting method is used to the molten aluminum in standing furnace
Cast, casting temperature be 730~740 DEG C, casting speed be 20~22mm/min, 300~310L/min of single branch water flow,
A small amount of molten aluminum is first put when wherein molten aluminum casting starts and slowly flows into crystallizer, when molten aluminum rises at 1/3 below crystallizer graphite annulus
It keeps starting to cast when 50~70s, casting cooling water is first closed after casting, it will after aluminium alloy cast rod tail end solidifies completely
Aluminium alloy cast rod after casting is transported to designated position.
Further, in step A aluminium alloy stock according to first high-melting-point, rear low melting point, first big density, the sequence of rear small density
It feeds intake.
Further, the big impurity in the step of step A is by stirring, skimming removing molten aluminum, it is primary every 10min stirring,
Stirring 10min every time.
Further, refining agent is added using powder blower or is uniformly sprinkled into refining agent in molten aluminum in step B, then is blown into
Argon gas simultaneously opens electromagnetic agitation vibrator, comes into full contact with refining agent with molten aluminum.
Further, the ingredient of refining agent is 23~28% NaCl, 20~40% KCl and 40~60% in step B
MgCl2。
Further, Al in step C5CuTi21550 DEG C of melting temperature, the nozzle diameter of gas atomization device is 2mm, gas
The high-pressure gas pressure of body atomising device is 4Mpa.
Further, the sintering temperature of step C plasma sintering equipment is 500 DEG C.
It further, is the ultrasonic wave of 30KHz by injection supersonic frequency in the molten aluminum after step C refinement.
Further, 20~40min is heated before the filtering of step D foamed ceramic filter plate, heating temperature is 750~800 DEG C.
Further, step E uses concentration to blow to molten aluminum after refinement from furnace bottom for 99% nitrogen or argon gas, blows
The gas time is 25~35min.
The beneficial effects of the present invention are:
1, the production technology of high-strength 6 line aluminium alloy casting rod disclosed in this invention, with Al of the present invention5CuTi2Fining agent replaces
Molten aluminum melting after melting is refined, and then prepares good aluminium alloy cast ingot by existing common Al-Ti-B refiner, and aluminium closes
The crystallite dimension of aluminium alloy can be reduced greatly in golden ingot casting, and aluminium alloy crystal grain can be reduced to 20~80 μm, other eutectics
Crystal grain can be reduced to 9 μm or so, and the structural constituent inside aluminium alloy cast ingot is more preferably uniform, improve the machinery of aluminium alloy cast ingot
Intensity.The aluminium alloy extrusions prepared by the aluminium alloy cast ingot in extrusion process, will not be generated since temperature is high or squeezes
The problem of speed causes crystal grain to be grown up fastly, influences aluminium alloy extrusions mechanical property.
2, the production technology of high-strength 6 line aluminium alloy casting rod disclosed in this invention, using Al5CuTi2Instead of traditional Al-
Ti-B fining agent keeps the structural constituent of inside ingot more preferably uniform, improves the mechanical strength of ingot casting, improves the quality of ingot casting,
The phenomenon that removing the bubble in molten aluminum, reducing aluminium ingot face crack, improves the yield rate of aluminium alloy cast rod, yield rate can reach
To 99%.
Specific embodiment
Below by a preferred embodiment of the present invention will be described in detail.
Embodiment 1
A kind of production technology of high-strength 6 line aluminium alloy casting rod, comprising the following steps:
A, each ingredient for determining 6082 aluminium alloy to be cast in proportion, according to first high-melting-point, rear low melting point, first big density,
The sequence of small density feeds intake afterwards, and control smelting temperature is 710 DEG C；
B, above-mentioned melt is stirred, skim and etc. remove big impurity in molten aluminum, it is primary every stirring in 10 minutes,
Stirring 10 minutes every time；
C, refining temperature control is at 730 DEG C, the dosage requirement of refining agent are as follows: the ingredient of 0.7kg/t Al, refining agent is
The MgCl of 23% NaCl, 20% KCl and 57%2.Refining agent must be added with powder blower, or remove packaging bag, powder
End is uniformly sprinkled into molten aluminum, then is blown into argon gas and is opened electromagnetic agitation vibrator, quiet after coming into full contact with refining agent and molten aluminum
Set 30min；
D, the fining agent for adding following preparations carries out online refinement, and additive amount control is in 0.5kg per ton, wherein fining agent
Preparation process are as follows:
A, Al is prepared by gas atomization device5CuTi2, 1550 DEG C of melting temperature, jet size 2mm, high pressure gas pressure
Power is 4Mpa, and wherein the ratio between amount of substance of Al, Cu and Ti is 5: 1: 2；
B, by the Al of above-mentioned preparation5CuTi275 μm of particle is selected with sieve classification；
C, by the Al of above-mentioned screening5CuTi2It is mixed with the aluminium of purity >=99.9% according to 1: 9 ratio, and into mixture
It is uniformly mixed after 0.2 part of stearate is added；
D, said mixture is prepared into fining agent by the sintering of plasma sintering device, wherein sintering temperature is 500
DEG C, 1.67 DEG C/sec of heating rate, sintering time 5min, briquetting pressure 45MPa；
It E, is 30KHz by the frequency of ultrasonic wave in the molten aluminum of ultrasonic wave injection melting, is controlled；
F, molten aluminum is filtered using foamed ceramic filter plate, before use, first heated filter plate 20min is answered, heating temperature
Degree is 800 DEG C；
G, the removal of impurities of final step is carried out to molten aluminum using graphite rotator, protective gas is argon gas, and gassing time is
25min, the revolving speed control of each graphite rotator is in 350r/min, and at 725 DEG C, the hydrogen content control of melt exists for temperature control
Within 0.12ml/100gAl；
H, the molten aluminum after slagging-off is transferred in founding standing furnace, the molten aluminum in standing furnace is carried out using semi-continuous casting method
Casting, casting temperature are 730 DEG C, casting speed 20mm/min, single branch water flow 300L/min, when wherein molten aluminum casting starts
It first puts a small amount of molten aluminum and slowly flows into crystallizer, start to cast when keeping 50s at below molten aluminum rises to crystallizer graphite annulus 1/3,
Casting cooling water is first closed after casting, transports the aluminium alloy cast rod after casting after aluminium alloy cast rod tail end solidifies completely
To designated position.
Embodiment 2
A kind of production technology of high-strength 6 line aluminium alloy casting rod, comprising the following steps:
A, each ingredient for determining 6082 aluminium alloy to be cast in proportion, according to first high-melting-point, rear low melting point, first big density,
The sequence of small density feeds intake afterwards, and control smelting temperature is 760 DEG C；
B, above-mentioned melt is stirred, skim and etc. remove big impurity in molten aluminum, it is primary every stirring in 10 minutes,
Stirring 10 minutes every time；
C, refining temperature control is at 740 DEG C, the dosage requirement of refining agent are as follows: the ingredient of 1.0kg/t Al, refining agent is
The MgCl of 28% NaCl, 20% KCl and 52%2.Refining agent must be added with powder blower, or remove packaging bag, powder
End is uniformly sprinkled into molten aluminum, then is blown into argon gas and is opened electromagnetic agitation vibrator, quiet after coming into full contact with refining agent and molten aluminum
Set 40min；
D, the fining agent for adding following preparations carries out online refinement, and additive amount control is in 1.0kg per ton, wherein fining agent
Preparation process are as follows:
A, Al is prepared by gas atomization device5CuTi2, 1550 DEG C of melting temperature, jet size 2mm, high pressure gas pressure
Power is 4Mpa, and wherein the ratio between amount of substance of Al, Cu and Ti is 5: 1: 2；
B, by the Al of above-mentioned preparation5CuTi2100 μm of particle is selected with sieve classification；
C, by the Al of above-mentioned screening5CuTi2It is mixed with the aluminium of purity >=99.9% according to 1: 9 ratio, and into mixture
It is uniformly mixed after a small amount of stearate is added；
D, said mixture is prepared into fining agent by the sintering of plasma sintering device, wherein sintering temperature is 500
DEG C, 1.67 DEG C/sec of heating rate, sintering time 5min, briquetting pressure 45MPa；
It E, is 30KHz by the frequency of ultrasonic wave in the molten aluminum of ultrasonic wave injection melting, is controlled；
F, molten aluminum is filtered using foamed ceramic filter plate, before use, first heated filter plate 40min is answered, heating temperature
Degree is 760 DEG C；
G, the removal of impurities of final step is carried out to molten aluminum using graphite rotator, protective gas is argon gas, and gassing time is
35min, the revolving speed control of each graphite rotator is in 400r/min, and at 730 DEG C, the hydrogen content control of melt exists for temperature control
Within 0.12ml/100gAl；
H, the molten aluminum after slagging-off is transferred in founding standing furnace, the molten aluminum in standing furnace is carried out using semi-continuous casting method
Casting, casting temperature are 740 DEG C, casting speed 22mm/min, single branch water flow 310L/min, when wherein molten aluminum casting starts
It first puts a small amount of molten aluminum and slowly flows into crystallizer, start to cast when keeping 70s at below molten aluminum rises to crystallizer graphite annulus 1/3,
Casting cooling water is first closed after casting, transports the aluminium alloy cast rod after casting after aluminium alloy cast rod tail end solidifies completely
To designated position.
Embodiment 3
A kind of production technology of high-strength 6 line aluminium alloy casting rod, comprising the following steps:
A, each ingredient for determining 6082 aluminium alloy to be cast in proportion, according to first high-melting-point, rear low melting point, first big density,
The sequence of small density feeds intake afterwards, and control smelting temperature is 710 DEG C；
B, above-mentioned melt is stirred, skim and etc. remove big impurity in molten aluminum, it is primary every stirring in 10 minutes,
Stirring 10 minutes every time；
C, refining temperature control is at 730 DEG C~740 DEG C, the dosage requirement of refining agent are as follows: 0.9kg/t Al, refining agent at
It is divided into the MgCl of 25% NaCl, 25% KCl and 50%2.Refining agent must be added with powder blower, or remove packaging bag,
Powder is uniformly sprinkled into molten aluminum, then is blown into argon gas and opens electromagnetic agitation vibrator, comes into full contact with refining agent with molten aluminum
Afterwards, 13min is stood；
D, the fining agent for adding following preparations carries out online refinement, and additive amount controls between 1.0kg per ton, wherein refining
The preparation process of agent are as follows:
A, Al is prepared by gas atomization device5CuTi2, 1550 DEG C of melting temperature, jet size 2mm, high pressure gas pressure
Power is 4Mpa, and wherein the ratio between amount of substance of Al, Cu and Ti is 5: 1: 2；
B, by the Al of above-mentioned preparation5CuTi2100 μm of particle is selected with sieve classification；
C, by the Al of above-mentioned screening5CuTi2It is mixed with the aluminium of purity >=99.9% according to 1: 9 ratio, and into mixture
It is uniformly mixed after a small amount of stearate is added；
D, said mixture is prepared into fining agent by the sintering of plasma sintering device, wherein sintering temperature is 500
DEG C, 1.67 DEG C/sec of heating rate, sintering time 5min, briquetting pressure 45MPa；
It E, is 30KHz by the frequency of ultrasonic wave in the molten aluminum of ultrasonic wave injection melting, is controlled；
F, molten aluminum is filtered using foamed ceramic filter plate, before use, first heated filter plate 30min is answered, heating temperature
Degree is 760 DEG C；
G, the removal of impurities of final step is carried out to molten aluminum using graphite rotator, protective gas is argon gas, and gassing time is
30min, the revolving speed control of each graphite rotator is in 400r/min, and at 725 DEG C, the hydrogen content control of melt exists for temperature control
Within 0.12ml/100gAl；
H, the molten aluminum after slagging-off is transferred in founding standing furnace, the molten aluminum in standing furnace is carried out using semi-continuous casting method
Casting, casting temperature are 730 DEG C, casting speed 20mm/min, single branch water flow 300L/min, when wherein molten aluminum casting starts
It first puts a small amount of molten aluminum and slowly flows into crystallizer, start to cast when keeping 60s at below molten aluminum rises to crystallizer graphite annulus 1/3,
Casting cooling water is first closed after casting, transports the aluminium alloy cast rod after casting after aluminium alloy cast rod tail end solidifies completely
To designated position.
Comparative example
A kind of production technology of 6 line aluminium alloy casting rod, comprising the following steps:
A, each ingredient for determining 6082 aluminium alloy to be cast in proportion, according to first high-melting-point, rear low melting point, first big density,
The sequence of small density feeds intake afterwards, and control smelting temperature is 710 DEG C；
B, above-mentioned melt is stirred, skim and etc. remove big impurity in molten aluminum, it is primary every stirring in 10 minutes,
Stirring 10 minutes every time；
C, at 730 DEG C, the dosage of refining agent is required for refining temperature control are as follows: 1kg/t Al, the ingredient of refining agent are 23%
NaCl, 20% KCl and 57% MgCl2.Refining agent must be added with powder blower, or remove packaging bag, and powder is equal
Even is sprinkled into molten aluminum, then is blown into argon gas and opens electromagnetic agitation vibrator, after coming into full contact with refining agent and molten aluminum, stands
15min；
D, addition Al-Ti-B refiner carries out online refinement, and additive amount is controlled in 0.5kg per ton；
It E, is 30KHz by the frequency of ultrasonic wave in the molten aluminum of ultrasonic wave injection melting, is controlled；
F, molten aluminum is filtered using foamed ceramic filter plate, before use, first heated filter plate 20min is answered, heating temperature
Degree is 760 DEG C；
G, the removal of impurities of final step is carried out to molten aluminum using graphite rotator, protective gas is argon gas, and gassing time is
25min, the revolving speed control of each graphite rotator is in 350r/min, and at 715 DEG C, the hydrogen content control of solution exists for temperature control
Within 0.15ml/100g Al；
H, the molten aluminum after slagging-off is transferred in founding standing furnace, the molten aluminum in standing furnace is carried out using semi-continuous casting method
Casting, casting temperature are 730 DEG C, casting speed 20mm/min, single branch water flow 300L/min, when wherein molten aluminum casting starts
It first puts a small amount of molten aluminum and slowly flows into crystallizer, start to cast when keeping 50s at below molten aluminum rises to crystallizer graphite annulus 1/3,
Casting cooling water is first closed after casting, transports the aluminium alloy cast rod after casting after aluminium alloy cast rod tail end solidifies completely
To designated position.
The yield rate of 6 line aluminium alloy casting rods and the experimental data of hydrogen content of Examples 1 to 3 and comparative example preparation are shown in Table
One:
Table one
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example | |
| Yield rate (%) | 99% | 99.4% | 99.2% | 96% |
| Hydrogen content (ml/100g) | 0.12 | 0.11 | 0.1 | 0.08 |
By table one it can be seen that, through the invention the aluminium alloy cast rod of high-strength 6 line aluminium alloy casting rod production technology preparation at
Product rate basically reaches 99% or more, and hydrogen content can reach 0.12ml/g, and aluminium alloy cast rod face crack phenomenon is inhibited.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (10)
1. a kind of production technology of high-strength 6 line aluminium alloy casting rod, which comprises the following steps:
It A, is liquid aluminium alloy, smelting temperature by melting after uniform stirring mixing in prepared aluminium alloy stock addition smelting furnace
It is 710~760 DEG C:
B, refining agent being added in smelting furnace to refine, refining temperature is 730~740 DEG C, and refining time is 15~20min,
Molten aluminum after refining stands 30~40min, in refining process simultaneously by electromagnetic mixing apparatus uniform stirring, wherein refining agent
Dosage requirement are as follows: 0.7~1kg/t Al；
C, fining agent will be added in the molten aluminum smelting furnace after refining and carry out online refinement, the additive amount of fining agent is 0.5~
1.0kg/t Al, the wherein preparation process of fining agent are as follows:
A, Al is prepared by gas atomization device5CuTi2, Al5CuTi21500~1600 DEG C of melting temperature, gas atomization device
Nozzle diameter be 2~3mm, the high-pressure gas pressure of gas atomization device is 4~5Mpa, the ratio between amount of substance of Al, Cu and Ti
It is 5: 1: 2:
B, by the Al of above-mentioned preparation5CuTi275~150 μm of particle is selected with sieve classification；
C, by the Al of above-mentioned screening5CuTi2It mixes with the aluminium of purity >=99.9% according to 1: 9 ratio, and is added into mixture
It is uniformly mixed after 0.2~0.5 part of stearate；
D, said mixture is prepared into fining agent by the sintering of plasma sintering device, wherein sintering temperature is 500~600
DEG C, 1.67 DEG C/sec of heating rate, sintering time 5min, briquetting pressure 45MPa；
D, the molten aluminum after refinement is filtered by foamed ceramic filter plate；
E, secondary removal of impurities is carried out to molten aluminum in smelting furnace using graphite rotator, high purity inert gas is passed through in smelting furnace as protection
Gas, the revolving speed of graphite rotator are 350~400r/min, and melt temperature is 725~730 DEG C, and the hydrogen content control of melt exists
Within 0.12ml/100g Al；
F, the molten aluminum after secondary removal of impurities is transferred in founding standing furnace, the molten aluminum in standing furnace is carried out using semi-continuous casting method
Casting, casting temperature be 730~740 DEG C, casting speed be 20~22mm/min, 300~310L/min of single branch water flow, wherein
Molten aluminum casting first puts a small amount of molten aluminum when starting and slowly flows into crystallizer, keeps when molten aluminum rises at 1/3 below crystallizer graphite annulus
Start to cast when 50~70s, casting cooling water is first closed after casting, it will casting after aluminium alloy cast rod tail end solidifies completely
Aluminium alloy cast rod afterwards is transported to designated position.
2. the production technology of high-strength 6 line aluminium alloy casting rod as described in claim 1, which is characterized in that aluminium alloy is former in step A
Material feeds intake according to first high-melting-point, rear low melting point, first big density, the sequence of rear small density.
3. the production technology of high-strength 6 line aluminium alloy casting rod as described in claim 1, which is characterized in that step A by stirring,
The step of skimming removes the big impurity in molten aluminum, primary every 10min stirring, stirs 10min every time.
4. the production technology of high-strength 6 line aluminium alloy casting rod as described in claim 1, which is characterized in that refining agent is adopted in step B
It is added with powder blower or is uniformly sprinkled into refining agent in molten aluminum, then be blown into argon gas and open electromagnetic agitation vibrator, make essence
Refining agent comes into full contact with molten aluminum.
5. the production technology of high-strength 6 line aluminium alloy casting rod as described in claim 1, which is characterized in that refining agent in step B
Ingredient is the MgCl of 23~28% NaCl, 20~40% KCl and 40~60%2。
6. the production technology of high-strength 6 line aluminium alloy casting rod as described in claim 1, which is characterized in that Al in step C5CuTi2
1550 DEG C of melting temperature, the nozzle diameter of gas atomization device is 2mm, and the high-pressure gas pressure of gas atomization device is
4Mpa。
7. the production technology of high-strength 6 line aluminium alloy casting rod as described in claim 1, which is characterized in that step C plasma
The sintering temperature of sintering equipment is 500 DEG C.
8. the production technology of high-strength 6 line aluminium alloy casting rod as described in claim 1, which is characterized in that after step C refinement
The ultrasonic wave that supersonic frequency is 30KHz is injected in molten aluminum.
9. the production technology of high-strength 6 line aluminium alloy casting rod as described in claim 1, which is characterized in that step D foamed ceramics mistake
20~40min is heated before filter plates, heating temperature is 750~800 DEG C.
10. the production technology of high-strength 6 line aluminium alloy casting rod as described in claim 1, which is characterized in that step E uses concentration
It blows to molten aluminum after refinement from furnace bottom for 99% nitrogen or argon gas, gassing time is 25~35min.
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| CN110923497A (en) * | 2019-10-29 | 2020-03-27 | 福建工程学院 | Intermediate alloy for refining crystalline structure of copper and copper alloy, preparation method and application process thereof |
| CN111961925A (en) * | 2020-08-12 | 2020-11-20 | 佛山市三水凤铝铝业有限公司 | Preparation method of aluminum alloy cast rod |
| CN114058889A (en) * | 2021-10-29 | 2022-02-18 | 上海工程技术大学 | Preparation method of high-strength high-toughness ultrafine-grained aluminum alloy |
| CN114310189A (en) * | 2022-01-08 | 2022-04-12 | 亚太轻合金(南通)科技有限公司 | Preparation process of thin-wall multi-curved-surface aluminum pipe |
| CN114769542A (en) * | 2022-03-18 | 2022-07-22 | 云南云铝泽鑫铝业有限公司 | Casting process for producing 6-series aluminum-magnesium-silicon alloy bar |
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| CN110923497A (en) * | 2019-10-29 | 2020-03-27 | 福建工程学院 | Intermediate alloy for refining crystalline structure of copper and copper alloy, preparation method and application process thereof |
| CN110923497B (en) * | 2019-10-29 | 2021-03-16 | 福建工程学院 | Intermediate alloy for refining crystalline structure of copper and copper alloy, preparation method and application process thereof |
| CN111961925A (en) * | 2020-08-12 | 2020-11-20 | 佛山市三水凤铝铝业有限公司 | Preparation method of aluminum alloy cast rod |
| CN111961925B (en) * | 2020-08-12 | 2022-04-08 | 佛山市三水凤铝铝业有限公司 | Preparation method of aluminum alloy cast rod |
| CN114058889A (en) * | 2021-10-29 | 2022-02-18 | 上海工程技术大学 | Preparation method of high-strength high-toughness ultrafine-grained aluminum alloy |
| CN114058889B (en) * | 2021-10-29 | 2022-09-16 | 上海工程技术大学 | Preparation method of high-strength high-toughness ultrafine-grained aluminum alloy |
| CN114310189A (en) * | 2022-01-08 | 2022-04-12 | 亚太轻合金(南通)科技有限公司 | Preparation process of thin-wall multi-curved-surface aluminum pipe |
| CN114769542A (en) * | 2022-03-18 | 2022-07-22 | 云南云铝泽鑫铝业有限公司 | Casting process for producing 6-series aluminum-magnesium-silicon alloy bar |
| CN114769542B (en) * | 2022-03-18 | 2024-03-15 | 云南云铝泽鑫铝业有限公司 | Casting process for bar production of 6-series aluminum-magnesium-silicon alloy |
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