CN104805333A - Aluminium-chromium intermediate alloy AlCr20 and preparation method thereof - Google Patents
Aluminium-chromium intermediate alloy AlCr20 and preparation method thereof Download PDFInfo
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- CN104805333A CN104805333A CN201510191542.6A CN201510191542A CN104805333A CN 104805333 A CN104805333 A CN 104805333A CN 201510191542 A CN201510191542 A CN 201510191542A CN 104805333 A CN104805333 A CN 104805333A
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- QRRWWGNBSQSBAM-UHFFFAOYSA-N alumane;chromium Chemical compound [AlH3].[Cr] QRRWWGNBSQSBAM-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000956 alloy Substances 0.000 title abstract description 13
- 229910045601 alloy Inorganic materials 0.000 title abstract description 13
- 239000004411 aluminium Substances 0.000 claims abstract description 71
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 71
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 71
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000011651 chromium Substances 0.000 claims abstract description 54
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 53
- 238000004458 analytical method Methods 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 38
- 239000004848 polyfunctional curative Substances 0.000 claims description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 5
- 238000005275 alloying Methods 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000000470 constituent Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 239000000155 melt Substances 0.000 claims description 5
- 239000006229 carbon black Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910021382 natural graphite Inorganic materials 0.000 claims description 2
- 238000005204 segregation Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000004615 ingredient Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000004927 fusion Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract 2
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 230000001473 noxious effect Effects 0.000 abstract 1
- 231100000572 poisoning Toxicity 0.000 abstract 1
- 230000000607 poisoning effect Effects 0.000 abstract 1
- 238000005070 sampling Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 14
- 239000003245 coal Substances 0.000 description 6
- 238000003760 magnetic stirring Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000013038 hand mixing Methods 0.000 description 3
- 206010017740 Gas poisoning Diseases 0.000 description 2
- 230000002939 deleterious effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
The invention discloses aluminium-chromium intermediate alloy AlCr20 and a preparation method thereof. The ingredients of the aluminium-chromium intermediate alloy AlCr20 are as follows by mass percent: 79-81 percent of aluminium element content, 19-21 percent of chromium element content; the raw materials are aluminium ingots with the aluminium content larger than 99.70 percent and chromium with the chromium content larger than 99.98 percent; the mass ratio of aluminium ingots to chromium is 100: (23.46-26.58); the raw materials are treated with fusion, reaction, sampling analysis and casting to obtain the aluminium-chromium intermediate alloy AlCr20. According to the method, the risks of open fire and poisoning caused by noxious gases are reduced; the pollution caused by workshop gases and harmful particulate matters and environmental pollution are avoided; the production cycle is shortened; the consistency of the ingredients of the alloy is guaranteed; the quality of aluminium-chromium intermediate alloy AlCr20 is improved; the chromium content of the aluminium-chromium intermediate alloy AlCr20 casted and obtained through the method can reach 19-21 percent and is ten times of that of the alloy prepared through the old national standard technology, and segregation does not occur in the aluminium-chromium intermediate alloy AlCr20.
Description
Technical field
The present invention relates to the preparation of contained aluminium-base intermediate alloy, specifically a kind of aluminium chromium hardener AlCr
20and preparation method thereof.
Background technology
In current People's Republic of China's non-ferrous metal industry standard, about the standard of aluminium chromium hardener, only has aluminium chromium hardener AlCr
2, aluminium chromium hardener AlCr
2ingredient standard: Cr content is 2.0-3.0wt%, and surplus is Al, and impurity Cu content≤0.2wt%, Fe content≤0.5wt%, temperature of fusion are 900-1000 DEG C, easy segregation; Its production technique of national regulations is: with aluminium ingot and chromium for raw material, first melt aluminium ingot, then add chromium, when reaching the smelting temperature of chromium, hand mixing, does low power analysis, be up to the standards, casting.The chromium content of the aluminium chromium hardener adopting GB production technique to obtain is lower, and due to chromium element comparatively active, easily there is segregation in this alloy.
Summary of the invention
The object of the present invention is to provide a kind of chromium content high, can not the aluminium chromium hardener AlCr of segregation
20and preparation method thereof.
For achieving the above object, the invention provides following technical scheme:
A kind of aluminium chromium hardener AlCr
20, its mass percent composition is: aluminium element content is 79-81%, chromium constituent content is 19-21%.
As the further scheme of the present invention: described aluminium element is provided by the aluminium ingot of aluminium content > 99.70%, described chromium element is provided by the chromium of chromium content > 99.98%.
As the further scheme of the present invention: described aluminium ingot: the mass ratio of chromium is 100:23.46-26.58.
Described aluminium chromium hardener AlCr
20preparation method, comprise the following steps:
(1) chromium of the aluminium ingot of aluminium content > 99.70%, chromium content > 99.98% is taken in proportion, for subsequent use;
(2) aluminium ingot got ready is put into electric furnace, with the speed of 20 DEG C/min, aluminium ingot is heated to more than 665 DEG C, aluminium ingot is melted;
(3) after aluminium ingot melts completely, continue, with the speed of 10 DEG C/min, heating by electric cooker to be incubated to 1865-1890 DEG C, then the chromium got ready is joined in the molten aluminium of fusing; Adopt magnetic stirrer to carry out stirring 3-8 minute to melt, make aluminium ingot and chromium alloying, obtain blend melt;
(4) blend melt is left standstill insulation, according to blend melt: the mass ratio of catalyzer is that the ratio of 100:0.35-0.6 adds catalyzer, and reaction 8-20 minute, skims, then add levelling agent and carry out homogenizing 10-15 minute;
(5) reacted melt is sampled, carry out low power analysis, composition analysis;
(6) to be tested qualified after, blend melt is cooled to 700-750 DEG C, casting.
As the further scheme of the present invention: described catalyzer comprises carbonaceous pulvis and carbon dust, the add-on of described carbonaceous pulvis is the 0.1-0.45% of blend melt quality, and the add-on of described zirconium powder is the 0.15-0.25% of blend melt quality.
As the further scheme of the present invention: described carbonaceous pulvis is the one or more kinds of mixtures in gac, carbon black, natural graphite, oildag, crystalline flake graphite.
Compared with prior art, the invention has the beneficial effects as follows: the present invention utilizes electric furnace to carry out the melting of alloy, every pot consuming time 3 hours, once can produce the aluminium chromium hardener AlCr of 500kg
20, the present invention takes electricity charge low ebb mode of operation, the electric rate of whole day is divided into several interval, and (the 8:00-12:00 electricity charge are 1.38 yuan/degree, the 12:00-17:00 electricity charge are 0.84 yuan/degree, the 17:00-21:00 electricity charge are 1.38 yuan/degree, the 21:00-24:00 electricity charge are 0.84 yuan/degree, the 0:00-8:00 electricity charge are 0.33 yuan/degree, the average electricity charge of whole day are 0.85 yuan), contrast electric cost and burn coal cost known, electric furnace is produced suitable with burning coal cost, but utilize electric furnace to carry out melting, have the following advantages: reduce naked light risk, poisonous gas poisoning risk, avoid the workshop gas that tradition burning coal causes, deleterious particle thing pollutes, environmentally safe, environmental protection, the present invention adopts magnetic stirring equipment to replace hand mixing, and the rotating speed of magnetic stirring equipment is 60r/min, not only shortens the production cycle, especially stirs very even, ensure that aluminium chromium hardener AlCr
20content consistency, improve aluminium chromium hardener AlCr
20quality, the present invention casts the aluminium chromium hardener AlCr obtained
20middle chromium content can reach 19-21%, is 10 times of GB old explained hereafter chromium content, and segregation does not occur.
Embodiment
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of aluminium chromium hardener AlCr
20, its mass percent composition is: aluminium element content is 81%, chromium constituent content is 19%.Aluminium element is provided by the aluminium ingot of aluminium content > 99.70%, and chromium element is provided by the chromium of chromium content > 99.98%.Aluminium ingot: the mass ratio of chromium is 100:23.46.
Described aluminium chromium hardener AlCr
20preparation method, comprise the following steps:
(1) chromium of the aluminium ingot of aluminium content > 99.70%, chromium content > 99.98% is taken in proportion, for subsequent use;
(2) aluminium ingot got ready is put into electric furnace, with the speed of 20 DEG C/min, aluminium ingot is heated to more than 665 DEG C, aluminium ingot is melted;
(3) after aluminium ingot melts completely, continue, with the speed of 10 DEG C/min, heating by electric cooker to be incubated to 1865-1890 DEG C, then the chromium got ready is joined in the molten aluminium of fusing; Adopt magnetic stirrer to carry out stirring 3-8 minute to melt, make aluminium ingot and chromium alloying, obtain blend melt;
(4) blend melt is left standstill insulation, according to blend melt: the mass ratio of catalyzer is the ratio interpolation catalyzer of 100:0.35, catalyzer comprises carbonaceous pulvis and carbon dust, the add-on of carbonaceous pulvis is 0.1% of blend melt quality, the add-on of zirconium powder is 0.25% of blend melt quality, and carbonaceous pulvis is gac, reaction 8-20 minute, skim, then add levelling agent and carry out homogenizing 10-15 minute;
(5) reacted melt is sampled, carry out low power analysis, composition analysis;
(6) to be tested qualified after, blend melt is cooled to 700-750 DEG C, casting.
Embodiment 2
In the embodiment of the present invention, a kind of aluminium chromium hardener AlCr
20, its mass percent composition is: aluminium element content is 80%, chromium constituent content is 20%.Aluminium element is provided by the aluminium ingot of aluminium content > 99.70%, and chromium element is provided by the chromium of chromium content > 99.98%.Aluminium ingot: the mass ratio of chromium is 100:25.
Described aluminium chromium hardener AlCr
20preparation method, comprise the following steps:
(1) chromium of the aluminium ingot of aluminium content > 99.70%, chromium content > 99.98% is taken in proportion, for subsequent use;
(2) aluminium ingot got ready is put into electric furnace, with the speed of 20 DEG C/min, aluminium ingot is heated to more than 665 DEG C, aluminium ingot is melted;
(3) after aluminium ingot melts completely, continue, with the speed of 10 DEG C/min, heating by electric cooker to be incubated to 1865-1890 DEG C, then the chromium got ready is joined in the molten aluminium of fusing; Adopt magnetic stirrer to carry out stirring 3-8 minute to melt, make aluminium ingot and chromium alloying, obtain blend melt;
(4) blend melt is left standstill insulation, according to blend melt: the mass ratio of catalyzer is the ratio interpolation catalyzer of 100:0.6, catalyzer comprises carbonaceous pulvis and carbon dust, the add-on of carbonaceous pulvis is 0.45% of blend melt quality, the add-on of zirconium powder is 0.15% of blend melt quality, and carbonaceous pulvis is carbon black, reaction 8-20 minute, skim, then add levelling agent and carry out homogenizing 10-15 minute;
(5) reacted melt is sampled, carry out low power analysis, composition analysis;
(6) to be tested qualified after, blend melt is cooled to 700-750 DEG C, casting.
Embodiment 3
In the embodiment of the present invention, a kind of aluminium chromium hardener AlCr
20, its mass percent composition is: aluminium element content is 79%, chromium constituent content is 21%.Aluminium element is provided by the aluminium ingot of aluminium content > 99.70%, and chromium element is provided by the chromium of chromium content > 99.98%.Aluminium ingot: the mass ratio of chromium is 100:26.58.
Described aluminium chromium hardener AlCr
20preparation method, comprise the following steps:
(1) chromium of the aluminium ingot of aluminium content > 99.70%, chromium content > 99.98% is taken in proportion, for subsequent use;
(2) aluminium ingot got ready is put into electric furnace, with the speed of 20 DEG C/min, aluminium ingot is heated to more than 665 DEG C, aluminium ingot is melted;
(3) after aluminium ingot melts completely, continue, with the speed of 10 DEG C/min, heating by electric cooker to be incubated to 1865-1890 DEG C, then the chromium got ready is joined in the molten aluminium of fusing; Adopt magnetic stirrer to carry out stirring 3-8 minute to melt, make aluminium ingot and chromium alloying, obtain blend melt;
(4) blend melt is left standstill insulation, according to blend melt: the mass ratio of catalyzer is the ratio interpolation catalyzer of 100:0.5, catalyzer comprises carbonaceous pulvis and carbon dust, the add-on of carbonaceous pulvis is 0.3% of blend melt quality, the add-on of zirconium powder is 0.2% of blend melt quality, and carbonaceous pulvis is the mixture of gac and carbon black, reaction 8-20 minute, skim, then add levelling agent and carry out homogenizing 10-15 minute;
(5) reacted melt is sampled, carry out low power analysis, composition analysis;
(6) to be tested qualified after, blend melt is cooled to 700-750 DEG C, casting.
The present invention utilizes electric furnace to carry out the melting of alloy, and every pot consuming time 3 hours, once can produce the aluminium chromium hardener AlCr of 500kg
20, the present invention takes electricity charge low ebb mode of operation, the electric rate of whole day is divided into several interval, and (the 8:00-12:00 electricity charge are 1.38 yuan/degree, the 12:00-17:00 electricity charge are 0.84 yuan/degree, the 17:00-21:00 electricity charge are 1.38 yuan/degree, the 21:00-24:00 electricity charge are 0.84 yuan/degree, the 0:00-8:00 electricity charge are 0.33 yuan/degree, the average electricity charge of whole day are 0.85 yuan), contrast electric cost and burn coal cost known, electric furnace is produced suitable with burning coal cost, but utilize electric furnace to carry out melting, have the following advantages: reduce naked light risk, poisonous gas poisoning risk, avoid the workshop gas that tradition burning coal causes, deleterious particle thing pollutes, environmentally safe, environmental protection.
The present invention adopts magnetic stirring equipment to replace hand mixing, and the rotating speed of magnetic stirring equipment is 60r/min, not only shortens the production cycle, especially stirs very even, ensure that aluminium chromium hardener AlCr
20content consistency, improve aluminium chromium hardener AlCr
20quality.
The present invention casts the aluminium chromium hardener AlCr obtained
20middle chromium content can reach 19-21%, is 10 times of GB old explained hereafter chromium content, and segregation does not occur.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this specification sheets is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification sheets is only for clarity sake, those skilled in the art should by specification sheets integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (6)
1. an aluminium chromium hardener AlCr
20, it is characterized in that, its mass percent composition is: aluminium element content is 79-81%, chromium constituent content is 19-21%.
2. aluminium chromium hardener AlCr according to claim 1
20, it is characterized in that, described aluminium element is provided by the aluminium ingot of aluminium content > 99.70%, and described chromium element is provided by the chromium of chromium content > 99.98%.
3. aluminium chromium hardener AlCr according to claim 2
20, it is characterized in that, described aluminium ingot: the mass ratio of chromium is 100:23.46-26.58.
4. one kind as arbitrary in claim 1-3 as described in aluminium chromium hardener AlCr
20preparation method, it is characterized in that, comprise the following steps:
(1) chromium of the aluminium ingot of aluminium content > 99.70%, chromium content > 99.98% is taken in proportion, for subsequent use;
(2) aluminium ingot got ready is put into electric furnace, with the speed of 20 DEG C/min, aluminium ingot is heated to more than 665 DEG C, aluminium ingot is melted;
(3) after aluminium ingot melts completely, continue, with the speed of 10 DEG C/min, heating by electric cooker to be incubated to 1865-1890 DEG C, then the chromium got ready is joined in the molten aluminium of fusing; Adopt magnetic stirrer to carry out stirring 3-8 minute to melt, make aluminium ingot and chromium alloying, obtain blend melt;
(4) blend melt is left standstill insulation, according to blend melt: the mass ratio of catalyzer is that the ratio of 100:0.35-0.6 adds catalyzer, and reaction 8-20 minute, skims, then add levelling agent and carry out homogenizing 10-15 minute;
(5) reacted melt is sampled, carry out low power analysis, composition analysis;
(6) to be tested qualified after, blend melt is cooled to 700-750 DEG C, casting.
5. aluminium chromium hardener AlCr according to claim 4
20preparation method, it is characterized in that, described catalyzer comprises carbonaceous pulvis and carbon dust, and the add-on of described carbonaceous pulvis is the 0.1-0.45% of blend melt quality, and the add-on of described zirconium powder is the 0.15-0.25% of blend melt quality.
6. aluminium chromium hardener AlCr according to claim 5
20preparation method, it is characterized in that, described carbonaceous pulvis is the one or more kinds of mixtures in gac, carbon black, natural graphite, oildag, crystalline flake graphite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510191542.6A CN104805333A (en) | 2015-04-22 | 2015-04-22 | Aluminium-chromium intermediate alloy AlCr20 and preparation method thereof |
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| CN201510191542.6A CN104805333A (en) | 2015-04-22 | 2015-04-22 | Aluminium-chromium intermediate alloy AlCr20 and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117551902A (en) * | 2023-11-13 | 2024-02-13 | 江苏美特林科特殊合金股份有限公司 | A chromium-aluminum master alloy and its preparation method |
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| CN101514417A (en) * | 2009-01-09 | 2009-08-26 | 毕祥玉 | Aluminum chromium intermediate alloy and preparation method thereof |
| CN101775526A (en) * | 2010-03-05 | 2010-07-14 | 武汉泛洲中越合金有限公司 | AL-Cr binary intermediate alloy and preparation method thereof |
| CN101967573A (en) * | 2010-11-15 | 2011-02-09 | 湖南金联星冶金材料技术有限公司 | Method for manufacturing aluminum zirconium intermediate alloy by alloying zirconium crumbs and aluminum at low temperature |
| CN102517465A (en) * | 2012-01-19 | 2012-06-27 | 湖南金联星特种材料股份有限公司 | Method for manufacturing aluminum-chromium intermediate alloy by using chromium-aluminum alloy and aluminum |
| CN104046818A (en) * | 2014-07-02 | 2014-09-17 | 正邦（福建）冶金材料有限公司 | Production process of Al-20Cr intermediate alloy |
-
2015
- 2015-04-22 CN CN201510191542.6A patent/CN104805333A/en active Pending
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| CN101514417A (en) * | 2009-01-09 | 2009-08-26 | 毕祥玉 | Aluminum chromium intermediate alloy and preparation method thereof |
| CN101775526A (en) * | 2010-03-05 | 2010-07-14 | 武汉泛洲中越合金有限公司 | AL-Cr binary intermediate alloy and preparation method thereof |
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| CN102517465A (en) * | 2012-01-19 | 2012-06-27 | 湖南金联星特种材料股份有限公司 | Method for manufacturing aluminum-chromium intermediate alloy by using chromium-aluminum alloy and aluminum |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117551902A (en) * | 2023-11-13 | 2024-02-13 | 江苏美特林科特殊合金股份有限公司 | A chromium-aluminum master alloy and its preparation method |
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