CN104532096A - Renewable aluminum alloy metal material and manufacturing method thereof - Google Patents
Renewable aluminum alloy metal material and manufacturing method thereof Download PDFInfo
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- CN104532096A CN104532096A CN201410629889.XA CN201410629889A CN104532096A CN 104532096 A CN104532096 A CN 104532096A CN 201410629889 A CN201410629889 A CN 201410629889A CN 104532096 A CN104532096 A CN 104532096A
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Abstract
The invention discloses a renewable aluminum alloy metal material. The renewable aluminum alloy metal material is characterized by comprising, by mass, 30 percent to 50 percent of scrap carbon steel, 25 percent to 45 percent of scrap steel alloy steel, 15 percent to 20 percent of Cr-Fe, 3 percent to 5 percent of Mn-Fe, 0.1 percent to 5 percent of Mo-Fe, 0.5 percent to 1 percent of Al, 0.05 percent to 0.10 percent of rare earth elements and 5 percent to 8 percent of refractory particles. The metal material achieves the expectant design aim, and due to improvement of material components, it is ensured that percent of pass of products is larger than 95 percent. Dephosphorization and desulfurization are carried out on slag and bottom slag in the smelting process, so that the content of P is reduced to about 0.04 percent; probability of appearing of casting cracks and heat treatment cracks is greatly reduced, and the casting precision is high; due to sequencing of the specific effective temperature selection and treatment steps of a casting, the high wear resistance, high impact resistance and high toughness of the casting are effectively improved, so that the service life is prolonged. Due to selection of 5 percent to 8 percent of refractory matter, in the casting process, main liquid metals of dispersoid of refractory matter fine grains have the excellent liquidity in the pouring process, serous fluid easily flows, and therefore a sand mould is filled with the serous fluid, so that a sound casting of metal materials is produced.
Description
Technical field
The present invention relates to a kind of renewable Al-alloy metal material, belong to product of metal material field.
Background technology
Aluminium alloy is a most widely used class non-ferrous metal structured material in industry, widely applies in Aeronautics and Astronautics, automobile, machinofacture, boats and ships and chemical industry.The develop rapidly of industrial economy, increasing to the demand of Welded structural part, make the Research on Weldability of aluminium alloy also thereupon deeply.
Aluminium alloy density is low, but strength ratio is higher, close to or exceed high-quality steel, plasticity is good, can be processed into various section bar, has excellent electroconductibility, thermal conductivity and corrosion stability, industrially widely uses, and usage quantity is only second to steel.Some aluminium alloys can adopt thermal treatment to obtain good mechanical property, physicals and corrosion resistance.
Behaviors of Deformed Aluminum Alloys can bear press working.The aluminium alloy material of various form, specification can be processed into.Mainly for the manufacture of air material, door and window for building etc.Behaviors of Deformed Aluminum Alloys is divided into again not heat-treatable strengthened type aluminium alloy and heat-treatable strengthened type aluminium to close auspicious cloud torch gold.Not heat-treatable strengthened type does not improve mechanical property by thermal treatment, and can only realize strengthening by cold deformation, it mainly comprises rafifinal, industrial rafifinal, commercial-purity aluminium and corrosion-resisting aluminium etc.Heat-treatable strengthened type aluminium alloy can improve mechanical property by heat treatment such as quenching and timeliness, and it can be divided into duralumin, wrought aluminium, ultralumin and particular aluminum alloy etc.
At present, the development of aluminum alloy materials obtains significant progress, generally speaking, higher wear resistance can be obtained by controlling alloy composition, but the choice existed other character, therefore, hard goods blame perfectly to be gathered, can ensure while enhancing the resistivity against fire of alloy that alloy has material and the preparation method of high-quality, be the problem that those skilled in the art are badly in need of studying.
Summary of the invention
The object of the invention is to for deficiency of the prior art, a kind of renewable Al-alloy metal material is provided, there is high wear-resistant, high impact-resistant, obdurability and fire-resistant characteristic.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of renewable Al-alloy metal material, its innovative point is: the mass percent comprising following food ingredient is: steel scrap carbon steel 20-40%, steel scrap steel alloy 20-35%, 13-15%Mn-Fe, 0.31-0.5%Mo-Fe, 0.55-1.8%Al and rare earth element surplus.
Further, the mass percent comprising following food ingredient is: steel scrap carbon steel 30%, steel scrap steel alloy 25%, 15%Mn-Fe, 0.45%Mo-Fe, 0.66%Al, surplus rare earth element.
Another object of the present invention is to provide a kind of preparation method of renewable Al-alloy metal material, and be mainly casting smelting step, its innovative point is: described casting smelting step is specially:
(1) steel scrap carbon steel 20-40% is first added, steel scrap steel alloy 20-35%, 13-15%Mn-Fe, 0.31-0.5%Mo-Fe, 0.55-1.8%Al prepare burden, charging, then melting down when control temperature is 1000-1250 DEG C, conveniently technique is carried out slag dephosphorization and desulfurization at the bottom of refining slag, is skimmed;
(2) chemically examine, refining slag, control C, Al, Mn tri-principal elements mass percent add up to 5 ~ 10%;
(3) chemically examine, add surplus rare earth element, temperature raising tapping temperature controls at 1600 DEG C, in bag, pour efficient rare-earth alterant carry out inoculation, be incubated 1 minute, skim, molten iron pouring temperature controls at 1100 DEG C, casting terminate after, control foundry goods come out of the stove to the time entering water be 1 ~ 3s.
Further, the add-on of the Al material in described step (3) is 0.66%.
Further, the control foundry goods in described step (3) come out of the stove to the time entering water be 2s.
Beneficial effect of the present invention is as follows:
(1) invention achieves the purpose of design of expection, the improvement of material composition, guarantee the qualification rate > 97% of product, the probability of casting crack and heat treatment crack appearance is greatly reduced in melting, casting accuracy is high, the selection of the distinctive significant temp of foundry goods and the sequencing for the treatment of step effectively increase that foundry goods height is wear-resistant, high impact-resistant, obdurability, thus improve the work-ing life of aluminium alloy itself.
(2) in the present invention, in base metal, mixing and dispersion can be carried out in an efficient way in liquid state in inert atmosphere such as vacuum oven, to minimize the oxidation of reactive element in fire proofed wood particle, the mobility of liquid metal slurry is enough to produce a series of metallic substance foundry goods, it has specific wear resistance, fracture toughness property and erosion resistance, is applicable to large-scale operating operational condition.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is elaborated.
Embodiment 1
A kind of renewable Al-alloy metal material, the mass percent comprising following food ingredient is: steel scrap carbon steel 20%, steel scrap steel alloy 20%, 13%Mn-Fe, 0.31%Mo-Fe, 0.55%Al and rare earth element surplus.
The preparation method of renewable Al-alloy metal material, is mainly casting smelting step above, and casting smelting step is specially:
(1) first add steel scrap carbon steel 20%, steel scrap steel alloy 20%, 13%Mn-Fe, 0.31%Mo-Fe, 0.55%Al is prepared burden, charging, and melting down when then control temperature is 1000-1250 DEG C, conveniently technique is carried out slag dephosphorization and desulfurization at the bottom of refining slag, skimmed;
(2) chemically examine, refining slag, control C, Al, Mn tri-principal elements mass percent add up to 5%;
(3) chemically examine, add surplus rare earth element, temperature raising tapping temperature controls at 1600 DEG C, in bag, pour efficient rare-earth alterant carry out inoculation, be incubated 1 minute, skim, molten iron pouring temperature controls at 1100 DEG C, casting terminate after, control foundry goods come out of the stove to the time entering water be 1s.
The present embodiment reaches the purpose of design of expection, the improvement of material composition, guarantee the qualification rate > 97% of product, the probability of casting crack and heat treatment crack appearance is greatly reduced in melting, casting accuracy is high, the selection of the distinctive significant temp of foundry goods and the sequencing for the treatment of step effectively increase that foundry goods height is wear-resistant, high impact-resistant, obdurability, thus improve the work-ing life of aluminium alloy itself.
Embodiment 2
A kind of renewable Al-alloy metal material, the mass percent comprising following food ingredient is: steel scrap carbon steel 40%, steel scrap steel alloy 35%, 15%Mn-Fe, 0.5%Mo-Fe, 1.8%Al and rare earth element surplus.
The preparation method of renewable Al-alloy metal material, is mainly casting smelting step above, and casting smelting step is specially:
(1) first add steel scrap carbon steel 40%, steel scrap steel alloy 35%, 15%Mn-Fe, 0.5%Mo-Fe, 1.8%Al is prepared burden, charging, and melting down when then control temperature is 1000-1250 DEG C, conveniently technique is carried out slag dephosphorization and desulfurization at the bottom of refining slag, skimmed;
(2) chemically examine, refining slag, control C, Al, Mn tri-principal elements mass percent add up to 10%;
(3) chemically examine, add surplus rare earth element, temperature raising tapping temperature controls at 1600 DEG C, in bag, pour efficient rare-earth alterant carry out inoculation, be incubated 1 minute, skim, molten iron pouring temperature controls at 1100 DEG C, casting terminate after, control foundry goods come out of the stove to the time entering water be 3s.
Embodiment 3
A kind of renewable Al-alloy metal material:
The mass percent comprising following food ingredient is: the mass percent comprising following food ingredient is: steel scrap carbon steel 30%, steel scrap steel alloy 25%, 15%Mn-Fe, 0.45%Mo-Fe, 0.66%Al, surplus rare earth element.
The preparation method of renewable Al-alloy metal material, is mainly casting smelting step above, and casting smelting step is specially:
(1) first add steel scrap carbon steel 30%, steel scrap steel alloy 25%, 15%Mn-Fe, 0.45%Mo-Fe, 0.66%Al is prepared burden, charging, and melting down when then control temperature is 1000-1250 DEG C, conveniently technique is carried out slag dephosphorization and desulfurization at the bottom of refining slag, skimmed;
(2) chemically examine, refining slag, control C, Al, Mn tri-principal elements mass percent add up to 7%;
(3) chemically examine, add surplus rare earth element, temperature raising tapping temperature controls at 1600 DEG C, in bag, pour efficient rare-earth alterant carry out inoculation, be incubated 1 minute, skim, molten iron pouring temperature controls at 1100 DEG C, casting terminate after, control foundry goods come out of the stove to the time entering water be 2s.
。
Claims (5)
1. a renewable Al-alloy metal material, it is characterized in that: the mass percent comprising following food ingredient is: steel scrap carbon steel 20-40%, steel scrap steel alloy 20-35%, 13-15%Mn-Fe, 0.31-0.5%Mo-Fe, 0.55-1.8%Al and rare earth element surplus.
2. renewable Al-alloy metal material according to claim 1, is characterized in that: the mass percent comprising following food ingredient is: steel scrap carbon steel 30%, steel scrap steel alloy 25%, 15%Mn-Fe, 0.45%Mo-Fe, 0.66%Al, surplus rare earth element.
3. a preparation method for renewable Al-alloy metal material according to claim 1, is mainly casting smelting step, it is characterized in that: described casting smelting step is specially:
First add steel scrap carbon steel 20-40%, steel scrap steel alloy 20-35%, 13-15%Mn-Fe, 0.31-0.5%Mo-Fe, 0.55-1.8%Al prepare burden, charging, then melting down when control temperature is 1000-1250 DEG C, conveniently technique is carried out slag dephosphorization and desulfurization at the bottom of refining slag, is skimmed;
Chemical examination, refining slag, control C, Al, Mn tri-principal elements mass percent add up to 5 ~ 10%;
(3) chemically examine, add surplus rare earth element, temperature raising tapping temperature controls at 1600 DEG C, in bag, pour efficient rare-earth alterant carry out inoculation, be incubated 1 minute, skim, molten iron pouring temperature controls at 1100 DEG C, casting terminate after, control foundry goods come out of the stove to the time entering water be 1 ~ 3s.
4. the preparation method of renewable Al-alloy metal material according to claim 3, is characterized in that: the add-on of the Al material in described step (3) is 0.66%.
5. the preparation method of renewable Al-alloy metal material according to claim 3, is characterized in that: the control foundry goods in described step (3) come out of the stove to the time entering water be 2s.
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| CN201410629889.XA CN104532096A (en) | 2014-11-11 | 2014-11-11 | Renewable aluminum alloy metal material and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108300887A (en) * | 2017-12-29 | 2018-07-20 | 天津圣金特汽车配件有限公司 | A kind of smelting technology of high-strength/tenacity aluminum alloy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108300887A (en) * | 2017-12-29 | 2018-07-20 | 天津圣金特汽车配件有限公司 | A kind of smelting technology of high-strength/tenacity aluminum alloy |
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Application publication date: 20150422 |