CN104263990B - A kind of reinforced aluminum smelting technology - Google Patents
A kind of reinforced aluminum smelting technology Download PDFInfo
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- CN104263990B CN104263990B CN201410481880.9A CN201410481880A CN104263990B CN 104263990 B CN104263990 B CN 104263990B CN 201410481880 A CN201410481880 A CN 201410481880A CN 104263990 B CN104263990 B CN 104263990B
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- aluminium alloy
- aluminum
- smelting technology
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- reinforced aluminum
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 42
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000003723 Smelting Methods 0.000 title claims abstract description 19
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 35
- 239000012535 impurity Substances 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 229920000548 poly(silane) polymer Polymers 0.000 claims description 13
- -1 polydimethylsiloxane Polymers 0.000 claims description 10
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000007670 refining Methods 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052783 alkali metal Inorganic materials 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 6
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 6
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- 239000012459 cleaning agent Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 230000002779 inactivation Effects 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 229910052756 noble gas Inorganic materials 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000003028 elevating effect Effects 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 238000005411 Van der Waals force Methods 0.000 abstract 2
- IKXDEFIEGAVNOZ-UHFFFAOYSA-N [SiH4].[C] Chemical compound [SiH4].[C] IKXDEFIEGAVNOZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 8
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 5
- 229920003257 polycarbosilane Polymers 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 102100028175 Abasic site processing protein HMCES Human genes 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 101001006387 Homo sapiens Abasic site processing protein HMCES Proteins 0.000 description 1
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- 229910018540 Si C Inorganic materials 0.000 description 1
- 229910008045 Si-Si Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 229910006411 Si—Si Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001095 light aluminium alloy Inorganic materials 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 230000005945 translocation Effects 0.000 description 1
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- Silicon Polymers (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of reinforced aluminum smelting technology, including cleaning raw material, melting, mixing, reaction, stirring and cooling. The applicant is after great many of experiments and research, creatively expect organising the C element impurity in aluminium alloy, form relatively stable covalent bond, carbon silane is generated after reaction, the crystal phase structure that single carbon atom utilizes Van der Waals force to be formed is made to be modified into the intermolecular Van der Waals force of covalent bond, and strengthening function of being formed, aluminium alloy generates skeleton, enhancing the structure of aluminium alloy, aluminium alloy toughness while elevating mechanism intensity reduces inconspicuous.
Description
Technical field
The present invention relates to a kind of aluminum smelting technology, belong to metal and manufacture manufacture field.
Background technology
Today in exquisite environmental protection, for saving energy consumption, the commonly used light-weight design of automobile, and the retort stand that traditional automotive interior is used for fixing a large amount of part is replaced with the means that light metal support is routine, metallic aluminium is widely applied with higher hardness, lighter weight and relatively low cost. Although and metallic aluminium hardness is higher, but same thickness still exists gap with metallic iron, therefore adopt aluminium alloy in the market in a large number, and lifting smelting technology promotes aluminum intensity as far as possible. But even to this day, the mechanical strength of Light Aluminum Alloy and toughness, still not ideal enough.
Summary of the invention
The present invention solves prior art problem, it is provided that a kind of aluminum smelting technology making aluminium alloy improve mechanical strength under the premise ensureing toughness.
The technical scheme is that a kind of reinforced aluminum smelting technology, comprise the following steps:
A) cleanout fluid is used virgin material and reclaimed materials to be cleaned up;
B) virgin material and reclaimed materials are combined by a certain percentage formation compound, send into smelting furnace;
C) smelting furnace is heated at least 700 DEG C so that compound is molten into aluminum liquid;
D) is skimmed in aluminum liquid surface, and to taking out the impurity of precipitation bottom aluminum liquid, then aluminum liquid is sampled detection;
E) add appropriate magnesium according to testing result, and be stirred, form aluminium alloy;
F) by (CH3)2SiCl2Carry out polyreaction, generate polysilane, then by polysilane and described aluminium alloy Homogeneous phase mixing, make described modification liquid;
G) described modification liquid being injected mould, aluminum finished product is made in cooling.
As preferably, in step f, described polysilane and the mixed temperature of described aluminium alloy are maintained at 700 �� 30 DEG C.
As preferably, in step f, making described (CH3)2SiCl2React in organic solvent with alkali metal or alkaline-earth metal, generate thick polydimethylsiloxane, make the alkali metal in described thick polydimethylsiloxane or alkaline-earth metal inactivation, be subsequently adding surfactant, wash described thick polydimethylsiloxane, obtain described polysilane.
As preferably, described virgin material and reclaimed materials carrying out after having cleaned described in step a drying preheating, the described temperature drying preheating is 350 ~ 500 DEG C.
As preferably, again skimming after step e forms aluminium alloy.
As preferably, operation of skimming described in step d neutralization procedure e adds slag-cleaning agent all in advance.
As preferably, described in skim after operation completes and all need to carry out injection refining, described injection refining is with inert gas for carrier in described aluminum liquid or described aluminium alloy, is uniformly sent into by In Powdered Aluminium inside described aluminum liquid or described aluminium alloy; Described inert gas is nitrogen or argon.
The mechanical strength of aluminium alloy and toughness, namely its important reason depends on the content of C in aluminium alloy, when C content raises, then aluminum alloy machinery intensity increases but toughness reduction, cause aluminium alloy hard and crisp, when C content reduces, then aluminum alloy machinery intensity reduces but toughness increase, causes aluminium alloy soft and tough.
The applicant, after great many of experiments and research, creatively expects organising the C element impurity in aluminium alloy, forms relatively stable covalent bond, with the skeleton provided reinforcement in aluminium alloy, effectively promotes the hardness of aluminium alloy.
Present invention process is after being optionally configured as magnalium, alloy molten liquid adds polysilane, in high temperature environments, there is hot translocation reaction in polysilane, making the methyl on side chain import between the Si-Si bond pouring into main chain with the form of methylene, thus forming organic Polycarbosilane, and forming carborundum (SiC) fiber further, Polycarbosilane and carborundum (SiC) fiber become the framework material of aluminum, to promote the mechanical strength of aluminium alloy.
In sum, the invention have the advantages that
1, aluminium alloy toughness while elevating mechanism intensity reduces inconspicuous;
2, overall melting material therefor is with low cost.
Accompanying drawing explanation
Fig. 1 is that polysilane of the present invention generates organic precursor method Polycarbosilane In situ FTIR spectrogram.
Detailed description of the invention
With embodiment, the invention will be further described below.
Embodiment one:
A kind of reinforced aluminum smelting technology, comprises the following steps:
A) using cleanout fluid virgin material and reclaimed materials to be cleaned up, described virgin material and reclaimed materials carry out after having cleaned drying preheating, the described temperature drying preheating is 350 ~ 500 DEG C;
B) virgin material and reclaimed materials are combined by a certain percentage formation compound, send into smelting furnace;
C) smelting furnace is heated at least 700 DEG C so that compound is molten into aluminum liquid;
D) aluminum liquid surface is added slag-cleaning agent to skim, and to taking out the impurity of precipitation bottom aluminum liquid, after completing, aluminum liquid is carried out injection refining, then aluminum liquid is sampled detection, described injection refining is with inert gas for carrier in described aluminum liquid or described aluminium alloy, is uniformly sent into by In Powdered Aluminium inside described aluminum liquid or described aluminium alloy; Described inert gas is nitrogen or argon;
E) add appropriate magnesium according to testing result, and be stirred, form aluminium alloy, and then addition slag-cleaning agent is skimmed, and after completing, aluminum liquid is carried out injection refining;
F) by (CH3)2SiCl2Carry out polyreaction, make described (CH3)2SiCl2React in organic solvent with alkali metal or alkaline-earth metal, generate thick polydimethylsiloxane, make the alkali metal in described thick polydimethylsiloxane or alkaline-earth metal inactivation, it is subsequently adding surfactant, wash described thick polydimethylsiloxane, obtain described polysilane (being expressed as LPS in Fig. 1), then by polysilane and described aluminium alloy Homogeneous phase mixing, temperature is maintained at 700 �� 30 DEG C, and use high-purity nitrogen air-flow that described aluminium alloy is carried out gas shield, make described modification liquid, high-purity nitrogen is the nitrogen that the purity that aluminium alloy and air can be made completely isolated is higher, high pure nitrogen can pass through to liquefy to prepare, for regular industrial material, adopt nitrogen stream simultaneously, namely the foreign gas produced in course of reaction is made immediately to be taken away,
G) described modification liquid being injected mould, aluminum finished product is made in cooling.
Being responded of present invention process is carried out infrared monitoring by the applicant, in the infrared spectrum of such as Fig. 1, and, 2950cm-1��2900cm-1Place is Si CH3C H stretching vibration peak, 2100cm-1Place is Si H stretching vibration peak, 1400cm-1Place is Si CH3C H deformation vibration peak, 1250cm-1Place is Si CH3Deformation peak, 1020cm-1Place is Si CH2The Si C Si stretching vibration peak of Si, 820cm-1Place is Si CH3Swing and Si C stretching vibration peak. Therefore, polysilane is containing Si H, Si CH3With a small amount of Si CH3The mixture of Si (little molecule silicon-carbon alkane) functional group. In spectrogram, divided by outside superiors, at 1360cm-1There is Si CH in place2The C H out-of-plane vibration peak of Si, namely containing Si CH in PCS molecule4��Si��CH2The construction units such as Si, Si H. Being illustrated as the polysilane that is divided into a small amount of little molecule silicon-carbon alkane and a large amount of little molecule silane becomes organic precursor method Polycarbosilane (being expressed as PCS in Fig. 1) gradating through high temperature. 3400cm-1And 1600cm-1The absworption peak at place is H2O peak, it is possible to make moist for sample and do not dry, or because of the OH absworption peak of oxidation, hydrolysis generation.
Through actual production and test, with product A lSil2The spectral content of Cu verifies as example, and former Si content is 11.5 ~ 13.5, and individual event impurity content is not more than 0.05, and impurity sum total is not more than 0.15; Product Si content after improvement is 12.0 ~ 13.0, and precision is higher, and individual event impurity content is not more than 0.05, and owing to C element becomes utility from impurity, therefore impurity sum total is not more than 0.11, and purity is obviously improved. Tested for hardness under similarity condition, original product is 91 ~ 97HB, and after improvement, product is up to 103 ~ 109HB, promotes nearly 10%.
With product A lSi8Cu3And AlSi9Cu3Spectral content verify as example, former Si content is 8.0 ~ 9.5, and individual event impurity content is not more than 0.05, impurity sum total be not more than 0.15; Product Si content after improvement is 8.0 ~ 8.8, and individual event impurity content is not more than 0.05, and impurity sum total is not more than 0.13. Tested for hardness under similarity condition, original product is 91 ~ 94HB, and after improvement, product is up to 97 ~ 101HB, promotes nearly 7%.
Verifying as example with the spectral content of product A DC12, former Si content is 10.5 ~ 12.0, and individual event impurity content is not more than 0.05, and impurity sum total is not more than 0.15; Product Si content after improvement is 10.9 ~ 11.8, and individual event impurity content is not more than 0.05, and impurity sum total is not more than 0.10. Tested for hardness under similarity condition, original product is 93 ~ 99HB, and after improvement, product is up to 101 ~ 106HB, promotes nearly 9%.
Verifying as example with the spectral content of product A 380, former Si content is 7.5 ~ 9.5, and individual event impurity content is not more than 0.05, and impurity sum total is not more than 0.2; Product Si content after improvement is 7.9 ~ 8.9, and individual event impurity content is not more than 0.05, and impurity sum total is not more than 0.16. Tested for hardness under similarity condition, original product is 91 ~ 93HB, and after improvement, product is up to 99 ~ 104HB, promotes nearly 9%.
Claims (5)
1. a reinforced aluminum smelting technology, it is characterised in that: comprise the following steps:
A) cleanout fluid is used virgin material and reclaimed materials to be cleaned up;
B) virgin material and reclaimed materials are combined by a certain percentage formation compound, send into smelting furnace;
C) smelting furnace is heated at least 700 DEG C so that compound is molten into aluminum liquid;
D) is skimmed in aluminum liquid surface, and to taking out the impurity of precipitation bottom aluminum liquid, then aluminum liquid is sampled detection;
E) add appropriate magnesium according to testing result, and be stirred, form aluminium alloy;
F) by (CH3)2SiCl2Carry out polyreaction, make described (CH3)2SiCl2React in organic solvent with alkali metal or alkaline-earth metal, generate thick polydimethylsiloxane, make the alkali metal in described thick polydimethylsiloxane or alkaline-earth metal inactivation, it is subsequently adding surfactant, washes described thick polydimethylsiloxane, obtain polysilane, then by described polysilane and aluminium alloy Homogeneous phase mixing, temperature is maintained at 700 �� 30 DEG C, and uses high-purity nitrogen air-flow that described aluminium alloy is carried out gas shield, makes modification liquid;
G) described modification liquid being injected mould, aluminum finished product is made in cooling.
2. reinforced aluminum smelting technology according to claim 1, it is characterised in that: described virgin material and reclaimed materials carry out after having cleaned described in step a drying preheating, and the described temperature drying preheating is 350 ~ 500 DEG C.
3. reinforced aluminum smelting technology according to claim 1, it is characterised in that: again skim after step e forms aluminium alloy.
4. reinforced aluminum smelting technology according to claim 3, it is characterised in that: operation of skimming described in step d neutralization procedure e adds slag-cleaning agent all in advance.
5. reinforced aluminum smelting technology according to claim 4, it is characterized in that: described in skim after operation completes and all need to carry out injection refining, described injection refining is with noble gas for carrier in described aluminum liquid or described aluminium alloy, is uniformly sent into by In Powdered Aluminium inside described aluminum liquid or described aluminium alloy; Described inert gas is nitrogen or argon.
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| CN201410481880.9A CN104263990B (en) | 2014-09-19 | 2014-09-19 | A kind of reinforced aluminum smelting technology |
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| CN201410481880.9A CN104263990B (en) | 2014-09-19 | 2014-09-19 | A kind of reinforced aluminum smelting technology |
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| CN104263990A CN104263990A (en) | 2015-01-07 |
| CN104263990B true CN104263990B (en) | 2016-06-08 |
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| CN107604185A (en) * | 2017-09-22 | 2018-01-19 | 安徽霍山龙鑫金属科技有限公司 | A kind of preparation technology of aluminium alloy |
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| CN1191242A (en) * | 1997-02-19 | 1998-08-26 | 任所管 | Process for smelting aluminium |
| DE102004028093A1 (en) * | 2004-03-20 | 2005-10-06 | Solvay Fluor Gmbh | Non-corrosive aluminum soldering aids |
| CN101307388B (en) * | 2008-06-24 | 2011-04-13 | 中国铝业股份有限公司 | Process for extracting aluminium and chlorides in aluminium ash |
| CN102443712B (en) * | 2010-10-11 | 2013-05-22 | 贵州航天风华精密设备有限责任公司 | Casting method for high-strength cast aluminum alloy |
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