CN110453102A - It is a kind of for regenerating the composite modifier and preparation method of ADC12 aluminium alloy - Google Patents
It is a kind of for regenerating the composite modifier and preparation method of ADC12 aluminium alloy Download PDFInfo
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- CN110453102A CN110453102A CN201910766589.9A CN201910766589A CN110453102A CN 110453102 A CN110453102 A CN 110453102A CN 201910766589 A CN201910766589 A CN 201910766589A CN 110453102 A CN110453102 A CN 110453102A
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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
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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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
Abstract
It is a kind of for regenerating the composite modifier and preparation method of ADC12 aluminium alloy, which forms by mass percentage are as follows: Te be 10 ~ 20%, YbCl3For 0.1 ~ 10%, surplus Al.After the fine aluminium fusing in corundum crucible, Al-Te intermediate alloy and YbCl is added in 730 ~ 750 DEG C of temperature35 ~ 8 minutes are kept the temperature afterwards, is stirred 3 minutes, when furnace temperature is down to 700 ~ 720 DEG C, logical argon gas is refined, and keeps the temperature 5 ~ 20 minutes；Surface scum is removed, pouring metal melt is solidified into metal die.Alterant of the present invention can be very good to solve isolate effect of the coarse needle-shaped Fe-riched phase numerous in regeneration ADC12 aluminium alloy to alloy, improve the mechanical property and processability of regeneration ADC12 aluminium alloy, and it can eliminate and melt intracorporal gas, the generation of bleb is substantially reduced, so that the product quality of casting be greatly improved.
Description
Technical field
The invention belongs to technical field of metal material, are related to composite modifier and its preparation of molten alloy Metamorphism treatment
Method.
Background technique
The casting character for regenerating ADC12 aluminium alloy is excellent, and no hot tearing and loose tendency, air-tightness are higher.It is widely used in
Automobile gearbox, motor body, air valve etc..But due to regeneration ADC12 aluminium alloy in silicon be mutually in it is coarse needle-shaped and blocky, lead
Causing the alloy, there are still intensity is low and plasticity poor (room temperature elongation is only 1 ~ 2%), machinability also show general ask
Topic.Regeneration ADC12 aluminium alloy is substantially all the waste aluminum that joined recycling, thus the alloy be inevitably doped into it is more miscellaneous
Matter, wherein with ferro element most harmfulness.Iron phase in the alloy mainly includes α-Fe phase, β-Fe phase.α-Fe is mutually in bone shape,
It is smaller to matrix Effect on Mechanical Properties, and β-Fe is mutually in needle-shaped (space sheet), seriously isolates matrix, significantly reduces aluminium alloy
Mechanical property.
The denaturalization phenomenon of alusil alloy is nineteen twenty France A.PACZ discovery, is added into eutectic aluminium-silicon alloy melt
Enter a small amount of Na, the silicon in alloy can be made mutually to be refined.Exactly this discovery is so that the aluminium not being available originally industrially
Silicon eutectic alloy (organizational coarseness, mechanical property are low) has suddenly become widely used good casting alloy.But Na is molten
Low, the easy evaporation oxidation of point leads to rotten decline too early.The density of Na is small, on the surface for easily floating on alloy liquid, leads to top mistake
It is rotten, and the rotten deficiency in lower part.Based on these disadvantages, people have searched out substitute-sodium salt of Na.Although sodium salt is without list
Matter Na so big disadvantage, but the easy moisture absorption of sodium salt degeneration agent, bad keeping are also not easily controlled and add sodium amount, alterant effect
Duration is short, casting stomata easily generated.Discovery strontium also had identical effect later, and effective time is long, referred to as long-acting change
Matter agent.Strontium also bad keeping, adds pure strontium difficult, so people are made into Al-Sr intermediate alloy, Yi Baoguan, additional amount is also easy
Control, validity period are 6 ~ 8h.Now, most popular alterant is in refinement hypoeutectic or cocrystallized Al-Si alloy
Al-Sr intermediate alloy.But it is had the disadvantage that it is found that strontium is rotten, it has very long deterioration latency stage to one, secondly strontium becomes
Matter easily makes alloy melt air-breathing, increases the pin hole of casting, destroys the mechanical property of casting.At this stage, it has been found that thinning effect
Most preferably rare earth alterative, but the cost of rare earth alterative is too high, is unfavorable for people's large-scale use.
Villaumite has preferable purification melt effect, is widely used in aluminum i ndustry production.Villaumite is added in aluminum melt,
Make itself and reactive aluminum, generates AlCl3With the escaping gas such as HCl, nonmetal inclusion and hydrogen are adsorbed, swims and rises to aluminum melt
Surface goes out, and removes nonmetal inclusion and hydrogen into slag and atmosphere.
It is CN103469026A in publication number, entitled " a kind of Rare earth element ytterbium alloying alusil alloy and preparation
It is to obtain in 9.0~13.5% alusil alloys that aluminium ytterbium intermediate alloy is added to silicon content by method " under the booster action of ultrasound
Modification effect preferable alusil alloy.
It is CN1046192A in publication number, entitled " a kind of chlorinated rare earth alterant " will contain rare earth-iron-boron
Alterant is added in alusil alloy of the silicon content greater than 6%, is solved the problems, such as rare earth segregation and enrichment in the alloy, is avoided
Cause the bad phenomenon of casting thermal fragmentation.
It is CN103643088A in publication number, entitled " a kind of alterant of ADC12 aluminium alloy and its rotten side
Alterant containing Al-5Ti-B and Al-10RE is added in ADC12 alloy by method ", solves the change of existing ADC12 aluminium alloy
The problem of matter agent thinning effect is unstable, easily fails, the poor mechanical property of ADC12 aluminium alloy.
Summary of the invention
The object of the present invention is to provide a kind of for regenerating the novel alterant of ADC12 aluminium alloy, can be significantly thin
Change the coarse iron phase in regeneration ADC12 aluminium alloy, intracorporal gas is melted in elimination.Make to regenerate the silicon phase and α-in ADC12 aluminium alloy
Significantly refining mutually occurs in aluminium.To greatly improve the mechanical property and casting character of regeneration ADC12.
The present invention is achieved by the following technical solutions.
It is of the present invention a kind of for regenerating the composite modifier of ADC12 aluminium alloy, quality percentage is pressed by following element
Than composition: Te is 10 ~ 20%, YbCl3For 0.1 ~ 10%, surplus Al.
It is of the present invention a kind of for regenerating the preparation method of the composite modifier of ADC12 aluminium alloy: by corundum crucible
After interior fine aluminium fusing, Al-Te intermediate alloy and YbCl is added in 730 ~ 750 DEG C of temperature35 ~ 8 minutes are kept the temperature afterwards, wherein Te
Additional amount is 10 ~ 20%, YbCl of alterant total weight3It is 0.1 ~ 10%；Stirred 3 minutes with graphite rod, when furnace temperature is down to 700 ~
At 720 DEG C, leads to argon gas into melt and refined, keep the temperature 5 ~ 20 minutes；Surface scum is removed, by pouring metal melt to metal mold
It is solidified in tool.
The solution have the advantages that: the coarse iron phase in regeneration ADC12 aluminium alloy can be significantly refined, is eliminated molten
Intracorporal gas.The silicon phase regenerated in ADC12 aluminium alloy is set mutually to occur significantly refining with alpha -aluminum.To greatly improve regeneration
The mechanical property and casting character of ADC12.
Detailed description of the invention
Fig. 1 is the metallographic structure figure of 50 times of ADC12 aluminium alloy as cast condition after going bad under conditions of adding 5 alterant of embodiment
Piece.
Fig. 2 is the metallographic structure of 500 times of ADC12 aluminium alloy as cast condition after going bad under conditions of adding 5 alterant of embodiment
Picture.
Fig. 3 is the metallurgical tissue picture of 50 times of ADC12 aluminium alloy as cast condition.
Specific embodiment
The present invention will be described further by following embodiment.
Embodiment 1.
After the fine aluminium fusing in corundum crucible, Al-Te intermediate alloy and YbCl is added in 730 DEG C of temperature35 points are kept the temperature afterwards
Clock, wherein the additional amount of Te is 12%, YbCl of alterant total weight3It is 0.5%；It is stirred 3 minutes with graphite rod, when furnace temperature is down to
At 700 DEG C, leads to argon gas into melt and refined, keep the temperature 10 minutes；Surface scum is removed, by pouring metal melt to metal die
Middle solidification.
Embodiment 2.
After the fine aluminium fusing in corundum crucible, Al-Te intermediate alloy and YbCl is added in 735 DEG C of temperature35 points are kept the temperature afterwards
Clock, wherein the additional amount of Te is 14%, YbCl of alterant total weight3It is 2%；It is stirred 3 minutes with graphite rod, when furnace temperature is down to
At 705 DEG C, leads to argon gas into melt and refined, keep the temperature 10 minutes；Surface scum is removed, by pouring metal melt to metal die
Middle solidification.
Embodiment 3.
After the fine aluminium fusing in corundum crucible, Al-Te intermediate alloy and YbCl is added in 740 DEG C of temperature35 points are kept the temperature afterwards
Clock, wherein the additional amount of Te is 16%, YbCl of alterant total weight3It is 5%；It is stirred 3 minutes with graphite rod, when furnace temperature is down to
At 710 DEG C, leads to argon gas into melt and refined, keep the temperature 10 minutes；Surface scum is removed, by pouring metal melt to metal die
Middle solidification.
Embodiment 4.
After the fine aluminium fusing in corundum crucible, Al-Te intermediate alloy and YbCl is added in 745 DEG C of temperature35 points are kept the temperature afterwards
Clock, wherein the additional amount of Te is 18%, YbCl of alterant total weight3It is 8%；It is stirred 3 minutes with graphite rod, when furnace temperature is down to
At 715 DEG C, leads to argon gas into melt and refined, keep the temperature 10 minutes；Surface scum is removed, by pouring metal melt to metal die
Middle solidification.
Embodiment 5.
After the fine aluminium fusing in corundum crucible, Al-Te intermediate alloy and YbCl is added in 750 DEG C of temperature35 points are kept the temperature afterwards
Clock, wherein the additional amount of Te is 20%, YbCl of alterant total weight3It is 10%；It is stirred 3 minutes with graphite rod, when furnace temperature is down to
At 720 DEG C, leads to argon gas into melt and refined, keep the temperature 10 minutes；Surface scum is removed, by pouring metal melt to metal die
Middle solidification.
Alterant will not added and add the regeneration ADC12 alloy cast ingot of appropriate 5 alterant of embodiment according to GB/T 228-
2002 are processed into 5 circular cross section tensile sample of Φ.After measured, rotten regeneration ADC12 alloy tensile sample is not added
Tensile strength is 163.62MPa, elongation percentage 2.97%；The tensile strength of the rotten regeneration ADC12 alloy tensile sample of addition is
294.51Mpa elongation percentage 8.91%.It can be seen that the addition of alterant can significantly improve the mechanical performance of aluminium alloy.
Appropriate 5 alterant of embodiment will be added and do not add the regeneration ADC12 alloy cast ingot sampling of alterant, polished,
Alloy microscopic structure is observed under an optical microscope after polishing, corrosion, as shown in attached drawing 1, attached drawing 2, attached drawing 3.From attached drawing 1,2,3
In as can be seen that the present invention for regeneration ADC12 have fairly obvious metamorphism, the alterant to regeneration ADC12 in β-
Fe phase has extraordinary thinning effect, and coarse Needle like Iron Phase is refined into dotted or fibrous.Iron phase is cut for matrix
Effect is split to be substantially eliminated.
Claims (2)
1. it is a kind of for regenerating the composite modifier of ADC12 aluminium alloy, it is characterized in that being made of by mass percentage following element:
Te is 10 ~ 20%, YbCl3For 0.1 ~ 10%, surplus Al.
2. it is described in claim 1 a kind of for regenerating the preparation method of the composite modifier of ADC12 aluminium alloy, it is characterized in that pressing
Following steps: after the fine aluminium fusing in corundum crucible, Al-Te intermediate alloy and YbCl is added in 730 ~ 750 DEG C of temperature3After protect
Temperature 5 ~ 8 minutes, wherein the additional amount of Te is 10 ~ 20%, YbCl of alterant total weight3It is 0.1 ~ 10%；3 points are stirred with graphite rod
Clock leads to argon gas into melt and is refined, keep the temperature 5 ~ 20 minutes when furnace temperature is down to 700 ~ 720 DEG C；Surface scum is removed, it will
Pouring metal melt is solidified into metal die.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804708A (en) * | 2019-12-09 | 2020-02-18 | 宁波市佳利来机械制造有限公司 | High-strength die-casting aluminum alloy, engine shell and manufacturing method of engine shell |
| CN113278831A (en) * | 2021-05-12 | 2021-08-20 | 南昌大学 | Method for preparing regenerated ADC12 aluminum alloy from scrap aluminum |
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| CN106756305A (en) * | 2017-01-03 | 2017-05-31 | 江苏理工学院 | A kind of Aluminum alloy modification processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804708A (en) * | 2019-12-09 | 2020-02-18 | 宁波市佳利来机械制造有限公司 | High-strength die-casting aluminum alloy, engine shell and manufacturing method of engine shell |
| CN113278831A (en) * | 2021-05-12 | 2021-08-20 | 南昌大学 | Method for preparing regenerated ADC12 aluminum alloy from scrap aluminum |
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| CN110453102B (en) | 2021-03-26 |
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