CN103074510A - Refining method of aluminum-magnesium-series cast aluminum alloy material - Google Patents
Refining method of aluminum-magnesium-series cast aluminum alloy material Download PDFInfo
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Abstract
The invention relates to a refining method of an aluminum-magnesium-series cast aluminum alloy material. In the method, a novel covering agent is selected for performing surface protection on an aluminum-magnesium-series alloy in a smelting process, a refining agent special for a magnesium-aluminum alloy is prepared simultaneously for refining a melt, and the smelting temperature and the pouring temperature are controlled, so that an aluminum-magnesium-series cast aluminum alloy with higher performance and a low magnesium burnout rate is obtained. According to the method, the novel covering agent and the special refining agent are applied for smelting an Al-Mg-series alloy (the content of Mg is 3-10 percent) under the control of a specific production process, so that the burnout of magnesium is controlled effectively, the production cost is saved, the cleanliness of the alloy is enhanced, and the porosity of the alloy is lowered.
Description
Technical field
The invention belongs to metal material field, especially a kind of method of refining of high purity alumina-magnesia cast aluminium alloy material.
Background technology
Aluminum magnesium alloy is a kind of widely used alloy, and it is the class alloy that proportion is minimum, corrosion resistance is the strongest in the existing aluminium alloy, is that a kind of not heat-treating also can have preferably alloy of some strength and Toughness Ratio.Aluminum magnesium alloy is in fusion process, because the chemical property of magnesium is active, cause oxidation, the burning phenomenon of alloy very serious, not only reduced the casting yield of magnesium in the alloy, and having caused huge financial loss, the oxidizing fire that therefore solves aluminum magnesium alloy is one of key of widely applying of aluminum magnesium alloy from now on.
The metal oxidation resistance ability depends on that surface film hinders the ability that reactive material is passed through, and that is to say the density coefficient that depends on surface film.Magnesium liquid is exposed in the atmosphere and can rapid oxidation generates magnesium oxide, becomes porous open texture, and will produce tension stress at metal bath surface, makes the bottom further oxidation occur and burns, and has also increased the air-breathing tendency of melt.Except the sharp increase that causes production cost, also become the main source of foundry goods impurity like this, and increase the bleb rate.As catching up with without adequate measures, its destruction that produces will cause beyond measure loss.
Through the accumulation of long-term practice experience, on the protection question of aluminum magnesium alloy melt, can Adopts measure be many-sided, mainly be to carry out round following several respects:
⑴ be covered on the melt with salt flux;
⑵ process melt under reaction atmosphere, form thin protective membrane thereon;
⑶ process melt under inert gas atmosphere;
⑷ be added on the melt as tectum with the inhibition element.
Although the smelting aluminum-magnesium alloy means of defence is numerous, all there are many defectives, can not satisfy extensive alloy production demand.
By retrieval, not yet find the publication document relevant with present patent application.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, a kind of method of refining of high purity alumina-magnesia cast aluminium alloy material is provided, present method is by using HGF-1 type insulating covering agent and XH-2 type refining agent, under specific controlling of production process, Al-Mg is associated gold (Mg content is 3～10%) founds, effectively controlled the scaling loss of magnesium, saved production cost, improve the cleanliness factor of alloy, reduced the porosity of alloy.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method of refining of high purity alumina-magnesia cast aluminium alloy material, step is as follows:
⑴ take by weighing required other metallic substance in remelted aluminum ingot, MAGNESIUM METAL and the alloy of aequum by the alloy requirement, and all material is carried out thermal pretreatment;
⑵ take by weighing the special-purpose refining agent of high-magnesium aluminum alloy by the 0.1～0.2wt% that always feeds intake, and presses 0.5 ~ 0.8kg/m according to the bath surface area
2Take by weighing the novel aluminum magnesium alloy covering agent, and all flux are carried out drying treatment;
⑶ add remelted aluminum ingot preheated among the step ⑴ and required other metallic substance in smelting furnace, and heat up with body of heater;
⑷ after the heat fused, add as required preheated required other master alloys, Melt Stirring is even, adjust 740～760 ℃ of melt temperatures, load weighted MAGNESIUM METAL is pressed into aluminium liquid bottom, until melt fully;
⑸ adjust 730～750 ℃ of temperature of aluminum liquid, and 75% of the insulating covering agent of complete drying among the step ⑵ is sprinkled in the melt, after it becomes molten state fully to cover, adds the refining agent that takes by weighing among the step ⑵;
⑹ adjust inert gas flow, carries out degasification slagging-off, 10～15 minutes degasification time, after degasification is finished, bypass surface dopant, claw aluminium liquid surface scum after, add remaining insulating covering agent among the step ⑸;
⑺ aluminium alloy melt left standstill 5～10 minutes, came out of the stove when 700～720 ℃ of melt temperatures.
And described rare gas element is argon gas.
Advantage of the present invention and beneficial effect are:
1, the present invention has selected a kind of novel insulating covering agent that the high purity alumina-magnesia alloy is carried out surface protection in fusion process; the refining agent that is equipped with simultaneously the magnalium special use carries out refining to melt; and control smelting temperature and teeming temperature, obtain the high purity alumina-magnesia cast aluminium alloy that performance is higher, the magnesium burn out rate is low.
2, the present invention uses novel insulating covering agent, effectively reduce high-magnesium aluminum alloy and found the oxidizing fire of magnesium in the process, especially the scaling loss of magnesium elements in long insulating process has improved the casting yield of magnesium elements in the aluminum magnesium alloy generative process, greatly reduces manufacturing cost.
3, another outstanding advantages that novel insulating covering agent uses among the present invention is, its adding can reduce the suction hydrogen tendency of melt greatly, and casting yield and the alloy flowability in order to guarantee magnesium elements in the prior art add higher that the magnesium temperature need to control, and the high aluminium alloy melt that causes of temperature is very easily air-breathing.
4, the present invention selects high-magnesium aluminum alloy with HGF-1 type refining agent melt slagging-off degassing effect obviously to be strengthened, and has improved the cleanliness factor of melt.
5, the application has further guaranteed the casting yield of magnesium elements and the final quality of alloy cast ingot by to adding the reasonable control of magnesium temperature and teeming temperature.
Description of drawings:
The LZ.AlMg9 alloy that Fig. 1 has provided Mg content requirement 8%～10.5% is founded the scaling loss situation contrast of magnesium elements in the process;
The LHM.GIBBS alloy that Fig. 2 has provided Mg content requirement 2.9%～3.4% is founded the scaling loss situation contrast of magnesium elements in the process.
Embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
The per-cent that below relates to all is weight percentage, except specified otherwise.
The special-purpose refining agent of the employed high-magnesium aluminum alloy of following examples is the HGF-1 type flux that upper marine rainbow light metal flux factory produces, and employed novel aluminum magnesium alloy covering agent is the XH-2 type flux that Xuzhou City rising sun brightness Aluminum company limited produces.But be not limited to above-mentioned two kinds, the special-purpose refining agent of high-magnesium aluminum alloy and novel aluminum magnesium alloy covering agent general in the industry all can.
A kind of method of refining of high purity alumina-magnesia cast aluminium alloy material, order is: add 75% novel insulating covering agent-Jia refining agent-degasification-skim-Jia 25% novel insulating covering agent.
⑴ take by weighing required other metallic substance in remelted aluminum ingot, MAGNESIUM METAL and the alloy of aequum by the alloy requirement, and all material is carried out thermal pretreatment.
⑵ take by weighing high-magnesium aluminum alloy with HGF-1 type refining agent by the 0.1～0.2wt% that always feeds intake, and presses 0.5 ~ 0.8kg/m according to the bath surface area
2Take by weighing aluminum magnesium alloy XH-2 type insulating covering agent, and all flux are carried out drying treatment.
⑶ add remelted aluminum ingot preheated among the step ⑴ and required other metallic substance (Pure Silicon Metal, manganese metal etc.) in smelting furnace, and heat up with body of heater.
⑷ after the heat fused, add as required preheated required other master alloys (aluminium titanium master alloy, ferro-aluminum master alloy etc.), Melt Stirring is even, adjust 740～760 ℃ of melt temperatures, load weighted MAGNESIUM METAL is pressed into aluminium liquid bottom, until melt fully;
⑸ adjust 730～750 ℃ of temperature of aluminum liquid, and 75% of the insulating covering agent of complete drying among the step ⑵ is sprinkled in the melt, after it becomes molten state fully to cover, adds the refining agent that takes by weighing among the step ⑵;
⑹ adjust rare gas element (argon gas) flow, carries out the degasification slagging-off, 10～15 minutes degasification time, after degasification is finished, bypass surface dopant, claw aluminium liquid surface scum after, add remaining insulating covering agent among the step ⑸;
⑺ aluminium alloy melt left standstill 5～10 minutes, came out of the stove when 700～720 ℃ of melt temperatures.
The present invention illustrates this process for purification as an example of LZ.AlMg9 alloy and LHM.GIBBS alloy example.
Embodiment 1
A kind of method of refining of high purity alumina-magnesia cast aluminium alloy material, what the present embodiment prepared is the LZ.AlMg9 alloy, step is as follows:
⑴ total batching is for 80Kg, by alloying constituent requirement (Si:1.0～1.5; Mg:8.0～10.5; Al is surplus) take by weighing the MAGNESIUM METAL 7.76Kg of aequum, Pure Silicon Metal 1Kg, remelted aluminum ingot 71.24Kg, and all material carried out thermal pretreatment.
⑵ take by weighing high-magnesium aluminum alloy HGF-1 type refining agent 0.12Kg, takes by weighing aluminum magnesium alloy XH-2 type insulating covering agent 0.14Kg, and load weighted all flux are carried out drying treatment.
⑶ order in industrial furnace adds remelted aluminum ingot preheated among the step ⑴, Pure Silicon Metal, and heats up with body of heater.
⑷ after the heat fused, Melt Stirring is even, adjust 755 ℃ of melt temperatures, load weighted MAGNESIUM METAL is pressed into aluminium liquid bottom, until melt fully.
⑸ adjust 740 ℃ of temperature of aluminum liquid, and 75% of the insulating covering agent of complete drying among the step ⑵ is sprinkled in the melt, after it becomes molten state fully to cover, adds the refining agent that takes by weighing among the step ⑵.
⑹ adjust argon flow amount, carries out degasification slagging-off, and the degasification time is 12 minutes, after degasification is finished, bypasses the bath surface insulating covering agent, claw aluminium liquid surface scum after, add remaining insulating covering agent among the step ⑸.
⑺ aluminium alloy melt left standstill 8 minutes, came out of the stove when 715 ℃ of melt temperatures.
The time of coming out of the stove is 150 minutes in the simulation actual production, begin timing from first sample of cast, every sample of cast in 30 minutes, pour into a mould altogether six on the large ingot of sample, the Mg content in the test samples, the casting yield of first sample Mg is up to 98.9%, the casting yield of last piece sample is 97.2%, greatly reduce the scaling loss of Mg element, the clean nothing of fracture surface of sample is mingled with, and the Cast hole of six samples is one-level entirely.
Embodiment 2
A kind of method of refining of high purity alumina-magnesia cast aluminium alloy material, what the present embodiment prepared is the LHM.GIBBS alloy, step is as follows:
⑴ total batching is for 80Kg, by alloying constituent requirement (Si:0.2～0.3; Mg:2.6～3.7; Fe:0.2～0.5; Mn:0.6～0.75; Ti:0.03～0.07; Al is surplus) take by weighing the MAGNESIUM METAL 2.8Kg of aequum, Pure Silicon Metal 0.2Kg, ferro-aluminum master alloy 3.2Kg, aluminium manganese master alloy 5.6Kg, aluminium titanium master alloy 0.4Kg, remelted aluminum ingot 67.8Kg.And all material carried out thermal pretreatment.
⑵ take by weighing high-magnesium aluminum alloy HGF-1 type refining agent 0.10Kg, takes by weighing aluminum magnesium alloy XH-2 type insulating covering agent 0.12Kg, and load weighted all flux are carried out drying treatment.
⑶ order in industrial furnace adds remelted aluminum ingot preheated among the step ⑴, Pure Silicon Metal, and heats up with body of heater.
⑷ after the heat fused, Melt Stirring is even, add preheated aluminium manganese master alloy, aluminium titanium master alloy, ferro-aluminum master alloy, adjust 750 ℃ of melt temperatures, load weighted MAGNESIUM METAL is pressed into aluminium liquid bottom, until melt fully.
⑸ adjust 745 ℃ of temperature of aluminum liquid, and 75% of the insulating covering agent of complete drying among the step ⑵ is sprinkled in the melt, after it becomes molten state fully to cover, adds the refining agent that takes by weighing among the step ⑵.
⑹ adjust argon flow amount, carries out the degasification slagging-off, and the degasification time is 10 minutes.After degasification is finished, bypass the bath surface insulating covering agent, claw aluminium liquid surface scum after, add remaining insulating covering agent among the step ⑸.
⑺ aluminium alloy melt left standstill 6 minutes, came out of the stove when 700 ℃ of melt temperatures.
The time of coming out of the stove is 150 minutes in the simulation actual production, begin timing from first sample of cast, every sample of cast in 30 minutes, pour into a mould altogether six on the large ingot of sample, the Mg content in the test samples, the casting yield of first sample Mg is up to 99.7%, the casting yield of last piece sample is 98.0%, greatly reduce the scaling loss of Mg element, the clean nothing of fracture surface of sample is mingled with, and the Cast hole of six samples is one-level entirely.
Claims (2)
1. the method for refining of a high purity alumina-magnesia cast aluminium alloy material, it is characterized in that: step is as follows:
⑴ take by weighing required other metallic substance in remelted aluminum ingot, MAGNESIUM METAL and the alloy of aequum by the alloy requirement, and all material is carried out thermal pretreatment;
⑵ take by weighing the special-purpose refining agent of high-magnesium aluminum alloy by the 0.1～0.2wt% that always feeds intake, and presses 0.5 ~ 0.8kg/m according to the bath surface area
2Take by weighing the novel aluminum magnesium alloy covering agent, and all flux are carried out drying treatment;
⑶ add remelted aluminum ingot preheated among the step ⑴ and required other metallic substance in smelting furnace, and heat up with body of heater;
⑷ after the heat fused, add as required preheated required other master alloys, Melt Stirring is even, adjust 740～760 ℃ of melt temperatures, load weighted MAGNESIUM METAL is pressed into aluminium liquid bottom, until melt fully;
⑸ adjust 730～750 ℃ of temperature of aluminum liquid, and 75% of the insulating covering agent of complete drying among the step ⑵ is sprinkled in the melt, after it becomes molten state fully to cover, adds the refining agent that takes by weighing among the step ⑵;
⑹ adjust inert gas flow, carries out degasification slagging-off, 10～15 minutes degasification time, after degasification is finished, bypass surface dopant, claw aluminium liquid surface scum after, add remaining insulating covering agent among the step ⑸;
⑺ aluminium alloy melt left standstill 5～10 minutes, came out of the stove when 700～720 ℃ of melt temperatures.
2. the method for refining of high purity alumina-magnesia cast aluminium alloy material according to claim 1, it is characterized in that: described rare gas element is argon gas.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805322A (en) * | 2015-04-10 | 2015-07-29 | 凤阳爱尔思轻合金精密成型有限公司 | Non-heat-treated self-strengthening aluminum and magnesium alloy and preparation technology thereof |
| CN106337141A (en) * | 2015-07-14 | 2017-01-18 | 上海帅翼驰铝合金新材料有限公司 | Method for improving ADC6 aluminum alloy ingot performances |
| CN107243602A (en) * | 2017-06-06 | 2017-10-13 | 中山出入境检验检疫局检验检疫技术中心 | Model casting aluminium alloy smelting pouring procedure |
| CN108611504A (en) * | 2016-12-13 | 2018-10-02 | 山东瑞烨法兰有限公司 | A kind of technique using almag leftover bits and pieces bar |
| CN111155003A (en) * | 2020-02-25 | 2020-05-15 | 广西大学 | High-strength high-toughness high-magnesium aluminum alloy and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266924A (en) * | 2011-07-09 | 2011-12-07 | 中国铝业股份有限公司 | Continuous cast-rolling process for producing 5005 aluminum plastic strip billet |
| CN102644012A (en) * | 2012-05-17 | 2012-08-22 | 天津立中合金集团有限公司 | Preparation method of cocrystallized Al-Si alloy piston material |
-
2013
- 2013-02-01 CN CN201310040899.5A patent/CN103074510B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266924A (en) * | 2011-07-09 | 2011-12-07 | 中国铝业股份有限公司 | Continuous cast-rolling process for producing 5005 aluminum plastic strip billet |
| CN102644012A (en) * | 2012-05-17 | 2012-08-22 | 天津立中合金集团有限公司 | Preparation method of cocrystallized Al-Si alloy piston material |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805322A (en) * | 2015-04-10 | 2015-07-29 | 凤阳爱尔思轻合金精密成型有限公司 | Non-heat-treated self-strengthening aluminum and magnesium alloy and preparation technology thereof |
| CN106337141A (en) * | 2015-07-14 | 2017-01-18 | 上海帅翼驰铝合金新材料有限公司 | Method for improving ADC6 aluminum alloy ingot performances |
| CN106337141B (en) * | 2015-07-14 | 2018-07-20 | 上海帅翼驰铝合金新材料有限公司 | A method of improving ADC6 aluminium alloy ingots performances |
| CN108611504A (en) * | 2016-12-13 | 2018-10-02 | 山东瑞烨法兰有限公司 | A kind of technique using almag leftover bits and pieces bar |
| CN107243602A (en) * | 2017-06-06 | 2017-10-13 | 中山出入境检验检疫局检验检疫技术中心 | Model casting aluminium alloy smelting pouring procedure |
| CN107243602B (en) * | 2017-06-06 | 2019-10-25 | 中山出入境检验检疫局检验检疫技术中心 | Model casting aluminium alloy smelting pouring procedure |
| CN111155003A (en) * | 2020-02-25 | 2020-05-15 | 广西大学 | High-strength high-toughness high-magnesium aluminum alloy and preparation method thereof |
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Effective date of registration: 20200526 Address after: 300457 No. 58, Tai Tai Road, west end of Binhai New Area, Tianjin Patentee after: Tianjin xinlizhong alloy Group Co., Ltd Address before: 300457 No. 58, Tai Tai Road, west end of Binhai New Area, Tianjin Patentee before: Tianjin Lizhong Alloy Group Co.,Ltd. |
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