CN103031458B - Preparation method of refining agent for smelting magnesium element doped aluminum alloy sectional material - Google Patents
Preparation method of refining agent for smelting magnesium element doped aluminum alloy sectional material Download PDFInfo
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- CN103031458B CN103031458B CN201210515497.1A CN201210515497A CN103031458B CN 103031458 B CN103031458 B CN 103031458B CN 201210515497 A CN201210515497 A CN 201210515497A CN 103031458 B CN103031458 B CN 103031458B
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Abstract
The invention discloses a preparation method of a refining agent for smelting a magnesium element doped aluminum alloy sectional material, comprising the following operation steps of: preparing the following raw materials in parts by weight: 6-8 parts of potassium chloride, 4-6 parts of tree ash, 6-8 parts of magnesium particles, 3-5 parts of calcium fluoride, 3-5 parts of sodium nitrate, 5-8 parts of mountain flour, 8-10 parts of sodium fluosilicate, 3-5 parts of sodium sulfate, 5-8 parts of aluminum chloride, 3-5 parts of potassium carbonate, 8-10 parts of sepiolite, 5-8 parts of NaBF4, 3-5 parts of sodium chloride, 8-10 parts of Na2TiF68 and 5-8 parts of NaF; mixing the tree ash and the mountain flour in parts by weight and covering a mixture on the magnesium particles to form particulate matters; immersing the particulate matters by using hydrochloric acid with the concentration of 12-15% for 3-4 hours; washing by de-ionized water and immersing by a sodium hydroxide solution with the concentration of 12-15% for 3-4 hours; then, utilizing the de-ionized water to wash to be neutral; and finally, drying and crushing to obtain magnesium element covered particles, wherein the granularity of the magnesium element covered particles is 2-3 mm. The refining agent disclosed by the invention is used for treating to obtain a high-quality molten aluminum alloy; the molten aluminum alloy can be used for casting production and obviously improves the rate of finished products; particularly, the porosity in a cast is reduced by 1-2 degrees and is effectively controlled; pores are not formed on the surface of the cast, oxide inclusion is obviously reduced and the oxide inclusion is about grade 2; and the mechanical property of the cast is obviously improved.
Description
technical field
The present invention relates to a kind of melting field of high-strength aluminum alloy section, belong to aluminum alloy materials processing technique field.
Background technology
Need in aluminium alloy smelting process to use insulating covering agent, slagging agent, slag-cleaning agent, refining agent etc., aluminium alloy adds refining agent when temperature reaches about 720 degree, the refining agent used in traditional aluminium alloy manufacturing processed, the electroconductibility of finished product, thermal conductivity, erosion resistance can be caused not strong, and degree of porosity in the alloy-steel casting produced is higher, can produce pore cast(ing) surface is many, the ratio of oxidation foreign material is also higher, have impact on the performance of alloy-steel casting.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, a kind of refining agent for smelting preparation method of magnesium-doped element aluminium alloy extrusions is provided, improve the over-all properties of aluminium alloy extrusions.
The technical solution used in the present invention is as follows:
A refining agent for smelting preparation method for magnesium-doped element aluminium alloy extrusions, includes following operation steps: obtained by following raw materials in part by weight: Repone K 6-8, tree ash 4-6, magnesium grain 6-8, Calcium Fluoride (Fluorspan) 3-5, SODIUMNITRATE 3-5, stone flour 5-8, Sodium Silicofluoride 8-10, sodium sulfate 3-5, aluminum chloride 5-8, salt of wormwood 3-5, sepiolite 8-10, NaBF
45-8, sodium-chlor 3-5, Na
2tiF
68-10, NaF 5-8, particulate matter is become by being wrapped in magnesium grain after the tree ash of described weight part, stone flour mixing, particulate matter 12-15% salt acid soak 3-4 hour, deionized water wash, 3-4 hour is soaked again with 12-15% sodium hydroxide solution, extremely neutral with deionized water wash again, finally dry, pulverize obtained magnesium elements enwrapped granule, the granularity of magnesium elements enwrapped granule is 2-3mm;
Described refining agent preparation method is as follows:
A, by the sepiolite 10-15% sulfuric acid of above-mentioned weight part soak 3-4 hour, deionized water wash, then soak 3-4 hour with 10-12% sodium hydroxide solution, then with deionized water wash to neutral, then at 500-530 DEG C, calcine 2-3 hour, be ground into nanometer powder;
B, the Repone K of above-mentioned weight part, sodium-chlor, sodium sulfate, salt of wormwood, SODIUMNITRATE to be added to the water, add the peregal of sepiolite weight 1-2%, 3-5% aluminum oxide again, high speed 4800-5500 rev/min of stirring, obtains dispersion liquid, and dispersion liquid dewatered drying is pulverized;
C, by after other heating raw materials melting, pulverize;
D, the material that step a, b, c obtain added magnesium elements enwrapped granule, mixing stir evenly after particulate mixtures be refining agent.
Described refining agent is obtained by following raw materials in part by weight: Repone K 7, tree ash 5, magnesium grain 7, Calcium Fluoride (Fluorspan) 4, SODIUMNITRATE 4, stone flour 7, Sodium Silicofluoride 9, sodium sulfate 4, aluminum chloride 6, salt of wormwood 4, sepiolite 9, NaBF
46, sodium-chlor 4, Na
2tiF
69, NaF 7.
The present invention is through above-mentioned refining agent process, obtain the molten aluminium alloy of high-quality, such molten aluminium alloy is used for Foundry Production, significantly improve yield rate, the degree of porosity particularly in foundry goods reduces 1-2 degree, is controlled effectively, pore can not be produced at cast(ing) surface, trapped oxide also obviously reduces, and oxide inclusion is at about 2 grades, and the mechanical property of foundry goods significantly improves.Add intensity and the hardness of aluminium alloy, be conducive to the over-all properties improving aluminium alloy extrusions; The steps such as anneal, quench treatment, alignment process, add the homogeneity of the interior tissue of aluminum and the refinement of crystal grain, substantially improve quality and the processing characteristics of aluminium alloy extrusions; Chromate treating is carried out to aluminium alloy section surface, improves the resistance to corrosion of aluminium alloy section surface oxide film and the bonding force of aluminium alloy extrusions and coating.
Embodiment
Below in conjunction with executing example, the invention will be further described, but be not limited to the following example.
A refining agent for smelting preparation method for magnesium-doped element aluminium alloy extrusions, includes following operation steps: obtained by following weight (kilogram) raw material: Repone K 7, tree ash 5, Calcium Fluoride (Fluorspan) 4, SODIUMNITRATE 4, stone flour 7, Sodium Silicofluoride 9, sodium sulfate 4, aluminum chloride 6, salt of wormwood 4, sepiolite 9, NaBF
46, sodium-chlor 4, Na
2tiF
69, NaF 7, the tree ash of described weight part, stone flour are mixed and bonding one-tenth particulate matter, particulate matter 12-15% salt acid soak 3-4 hour, deionized water wash, 3-4 hour is soaked again with 12-15% sodium hydroxide solution, extremely neutral with deionized water wash again, finally dry, pulverize obtained tree ash enwrapped granule, the granularity of tree ash enwrapped granule is 2-3mm;
Described refining agent preparation method is as follows:
A, by the sepiolite 10-15% sulfuric acid of above-mentioned weight soak 3-4 hour, deionized water wash, then soak 3-4 hour with 10-12% sodium hydroxide solution, then with deionized water wash to neutral, then at 500-530 DEG C, calcine 2-3 hour, be ground into nanometer powder;
B, the Repone K of above-mentioned weight, sodium-chlor, sodium sulfate, salt of wormwood, SODIUMNITRATE to be added to the water, then to add peregal, the 3-5% aluminum oxide of sepiolite weight 1-2%, high speed 4800-5500 rev/min of stirring, obtains dispersion liquid, and dispersion liquid dewatered drying is pulverized;
C, by after other heating raw materials melting, pulverize;
D, the material that step a, b, c obtain added tree ash enwrapped granule, mixing stir evenly after particulate mixtures be refining agent.
Through above-mentioned refining treatment, obtain the molten aluminium alloy of high-quality, refining temperature is 710-760 DEG C, add-on is 0.5-1.5 kg/tonne, and such molten aluminium alloy is used for Foundry Production, significantly improves yield rate, degree of porosity particularly in foundry goods reduces 1-2 degree, be controlled effectively, trapped oxide also obviously reduces, and oxide inclusion is at about 2 grades.In melt, H content is generally 0.11-0.17ml/100g aluminium, and the mechanical property of foundry goods significantly improves.Magnesium grain plays dual function, oxygen uptake on the one hand, uses on the other hand as adding alloy.
Claims (2)
1. the refining agent for smelting preparation method of a magnesium-doped element aluminium alloy extrusions, it is characterized in that, include following operation steps: obtained by following raw materials in part by weight: Repone K 6-8, tree ash 4-6, magnesium grain 6-8, Calcium Fluoride (Fluorspan) 3-5, SODIUMNITRATE 3-5, stone flour 5-8, Sodium Silicofluoride 8-10, sodium sulfate 3-5, aluminum chloride 5-8, salt of wormwood 3-5, sepiolite 8-10, NaBF
45-8, sodium-chlor 3-5, Na
2tiF
68-10, NaF 5-8, particulate matter is become by being wrapped in magnesium grain after the tree ash of described weight part, stone flour mixing, particulate matter 12-15% salt acid soak 3-4 hour, deionized water wash, 3-4 hour is soaked again with 12-15% sodium hydroxide solution, extremely neutral with deionized water wash again, finally dry, pulverize obtained magnesium elements enwrapped granule, the granularity of magnesium elements enwrapped granule is 2-3mm;
Described refining agent preparation method is as follows:
A, by the sepiolite 10-15% sulfuric acid of above-mentioned weight part soak 3-4 hour, deionized water wash, then soak 3-4 hour with 10-12% sodium hydroxide solution, then with deionized water wash to neutral, then at 500-530 DEG C, calcine 2-3 hour, be ground into nanometer powder;
B, the Repone K of above-mentioned weight part, sodium-chlor, sodium sulfate, salt of wormwood, SODIUMNITRATE to be added to the water, add the peregal of sepiolite weight 1-2%, 3-5% aluminum oxide again, high speed 4800-5500 rev/min of stirring, obtains dispersion liquid, and dispersion liquid dewatered drying is pulverized;
C, by after other heating raw materials melting, pulverize;
D, the material that step a, b, c obtain added magnesium elements enwrapped granule, mixing stir evenly after particulate mixtures be refining agent.
2. the refining agent for smelting preparation method of magnesium-doped element aluminium alloy extrusions according to claim 1, it is characterized in that, described refining agent is obtained by following raw materials in part by weight: Repone K 7, tree ash 5, magnesium grain 7, Calcium Fluoride (Fluorspan) 4, SODIUMNITRATE 4, stone flour 7, Sodium Silicofluoride 9, sodium sulfate 4, aluminum chloride 6, salt of wormwood 4, sepiolite 9, NaBF
46, sodium-chlor 4, Na
2tiF
69, NaF 7.
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| CN109295357A (en) * | 2018-12-12 | 2019-02-01 | 徐州宁铝业科技有限公司 | A kind of aluminium alloy of high-wearing feature and preparation method thereof |
| CN110527859B (en) * | 2019-09-17 | 2020-11-10 | 四川兰德高科技产业有限公司 | Fluorine-free sodium-free hollow spherical granular refining agent for aluminum alloy and preparation method and application thereof |
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| SU1792991A1 (en) * | 1991-02-11 | 1993-02-07 | Vni | Method of alumino-silicon alloys working |
| CN1026709C (en) * | 1991-12-16 | 1994-11-23 | 东北工学院 | Slag remover for refining Al or Al alloy |
| JP3668081B2 (en) * | 1998-12-25 | 2005-07-06 | 株式会社神戸製鋼所 | Method for refining molten aluminum alloy and flux for refining molten aluminum alloy |
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Effective date of registration: 20180913 Address after: 242000 Jingde Road, Xuancheng economic and Technological Development Zone, Anhui Patentee after: XUANCHENG HUILV ALUMINIUM INDUSTRY CO., LTD. Address before: 243111 Gushi Industrial Park, Dang Tu County, Ma'anshan, Anhui Patentee before: Anhui Huilv Aluminum Industry Co., Ltd. |
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Address after: 242000 Jingde Road, Xuancheng economic and Technological Development Zone, Anhui Patentee after: Anhui Huilong group Huilu New Material Technology Co.,Ltd. Address before: 242000 Jingde Road, Xuancheng economic and Technological Development Zone, Anhui Patentee before: YICHENG HUILV ALUMINUM Co.,Ltd. |
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