EP0069680B1 - Procédé d'affinage du grain du silicium primaire des alliages aluminium-silicium hypereutectiques - Google Patents
Procédé d'affinage du grain du silicium primaire des alliages aluminium-silicium hypereutectiques Download PDFInfo
- Publication number
- EP0069680B1 EP0069680B1 EP19820420053 EP82420053A EP0069680B1 EP 0069680 B1 EP0069680 B1 EP 0069680B1 EP 19820420053 EP19820420053 EP 19820420053 EP 82420053 A EP82420053 A EP 82420053A EP 0069680 B1 EP0069680 B1 EP 0069680B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnesium
- silicon
- alloys
- refining
- primary silicon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910052710 silicon Inorganic materials 0.000 title claims description 16
- 239000010703 silicon Substances 0.000 title claims description 16
- 238000007670 refining Methods 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 6
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 title claims 2
- 230000008569 process Effects 0.000 title description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 23
- 239000011777 magnesium Substances 0.000 claims description 23
- 229910052749 magnesium Inorganic materials 0.000 claims description 23
- 229910045601 alloy Inorganic materials 0.000 claims description 19
- 239000000956 alloy Substances 0.000 claims description 19
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052698 phosphorus Inorganic materials 0.000 claims description 12
- 239000011574 phosphorus Substances 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 5
- 239000013078 crystal Substances 0.000 description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 16
- 230000000694 effects Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- 229910000676 Si alloy Inorganic materials 0.000 description 5
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000005496 eutectics Effects 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000005070 ripening Effects 0.000 description 2
- 239000011856 silicon-based particle Substances 0.000 description 2
- MOMKYJPSVWEWPM-UHFFFAOYSA-N 4-(chloromethyl)-2-(4-methylphenyl)-1,3-thiazole Chemical compound C1=CC(C)=CC=C1C1=NC(CCl)=CS1 MOMKYJPSVWEWPM-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001366 Hypereutectic aluminum Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 150000002680 magnesium Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229940048084 pyrophosphate Drugs 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- 235000019983 sodium metaphosphate Nutrition 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
- C22C21/04—Modified aluminium-silicon alloys
Definitions
- the present invention relates to a process for refining the grain of the primary silicon of the hypereutectic aluminum-silicon alloys.
- aluminum-silicon alloys are classified into three groups according to their content of addition element. Alloys containing about 12.5% by weight of Si are said to be eutectic; those which contain a quantity lower or higher than this value are respectively qualified as hypo or hypereuteticques.
- hypereutectic alloys which, during their development, successively give, on cooling, a solid phase containing essentially crystals of primary silicon then the aluminum-silicon eutectic.
- Such alloys find their application in particular during the manufacture by molding of liners of internal combustion engines, because such a structure of hard primary silicon crystals embedded in a softer eutectic matrix is particularly suitable for forming a surface having mid croporosities favorable to the retention of lubricants and to friction behavior. But it must however, to get proper results, that these crystals have dimensions not exceeding 100 I Lm.
- the present invention relates to a process for refining the primary silicon of hypereutectic aluminum-silicon alloys having undergone a pre-refining with a phosphorus-based product, characterized in that this alloy is added a magnesium product immediately before pouring it.
- the alloy being prepared in a conventional manner and refined by adding 50 to 1000 ppm of phosphorus or a corresponding amount of one of its derivatives, magnesium is therefore added to it.
- the latter may be in the elementary state or of aluminum-magnesium master alloys and in the form of turnings, powder or even massive pieces of dimensions compatible with a sufficiently high dissolution rate.
- the quantity used is such that it makes it possible to reach, in the final alloy, a magnesium content of 500 ppm but, in the case of the production of alloys containing magnesium in their composition, the quantity can be added necessary to achieve the desired content.
- the addition takes place at a time as close as possible to that of the casting and in any case, less than 30 minutes before solidification, because, beyond this time, the refining effect fades and becomes practically zero.
- the addition is made less than five minutes before casting in order to be in the optimum ripening conditions.
- Celé has the advantage of reducing consumption of this metalloid and of reducing the quantities present in processing ovens.
- the invention can be illustrated by means of the following examples:
- a metal bath of AS17 was divided into three separate volumes to which were added to each different amounts of phosphorus, between 10 and 50 ppm. A sample was taken from each of them, which was solidified in thirteen seconds and whose structure was examined: the size of the primary silicon crystals observed was: 20 - 40 - 60 I Lm.
- magnesium has the effect of dividing the size of the primary silicon grains by a factor of approximately 2.
- the present invention finds its application in the refining of hypereutectic aluminum alloys and is of great interest, in particular when these alloys are intended for the manufacture of liners of internal combustion engines or of any other part subjected to friction.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Silicon Compounds (AREA)
- Continuous Casting (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8107856 | 1981-04-14 | ||
| FR8107856A FR2504154B1 (fr) | 1981-04-15 | 1981-04-15 | Procede d'affinage du silicium primaire des aluminium-silicium hypereutectiques |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0069680A1 EP0069680A1 (fr) | 1983-01-12 |
| EP0069680B1 true EP0069680B1 (fr) | 1985-07-03 |
Family
ID=9257585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19820420053 Expired EP0069680B1 (fr) | 1981-04-15 | 1982-04-14 | Procédé d'affinage du grain du silicium primaire des alliages aluminium-silicium hypereutectiques |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0069680B1 (enrdf_load_stackoverflow) |
| JP (1) | JPS57177943A (enrdf_load_stackoverflow) |
| CA (1) | CA1179507A (enrdf_load_stackoverflow) |
| DE (1) | DE3264528D1 (enrdf_load_stackoverflow) |
| DK (1) | DK164482A (enrdf_load_stackoverflow) |
| FR (1) | FR2504154B1 (enrdf_load_stackoverflow) |
| IE (1) | IE52548B1 (enrdf_load_stackoverflow) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH684800A5 (de) * | 1991-10-23 | 1994-12-30 | Rheinfelden Aluminium Gmbh | Verfahren zur Kornfeinung von Aluminium-Gusslegierungen, insbesondere Aluminium-Silizium-Gusslegierungen. |
| GB9409446D0 (en) * | 1994-05-12 | 1994-06-29 | Anglo Blackwells Limited | A method for manufacturing a phosphorus containing composition |
| EP2767608B1 (en) * | 2011-10-11 | 2016-08-10 | Nippon Light Metal Company, Ltd. | METHOD FOR PRODUCING ALUMINUM ALLOY IN WHICH Al-Fe-Si-BASED COMPOUND AND PRIMARY CRYSTAL Si ARE FINELY DIVIDED |
| CN104805343A (zh) * | 2015-05-12 | 2015-07-29 | 苏州列治埃盟新材料技术转移有限公司 | 一种中间合金材料及其制备方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1139009A (fr) * | 1955-10-06 | 1957-06-24 | Aluminiumwerke Nuernberg Gmbh | Procédé d'affinage des grains applicable aux alliages hypereutectiques aluminiumsilicium |
| DE1139656B (de) * | 1955-10-08 | 1962-11-15 | Metallgesellschaft Ag | Verfahren zur Kornfeinung des primaeren Siliziums in uebereutektischen Aluminium-Silizium-Legierungen |
-
1981
- 1981-04-15 FR FR8107856A patent/FR2504154B1/fr not_active Expired
-
1982
- 1982-04-13 DK DK164482A patent/DK164482A/da not_active IP Right Cessation
- 1982-04-13 JP JP57061663A patent/JPS57177943A/ja active Granted
- 1982-04-14 DE DE8282420053T patent/DE3264528D1/de not_active Expired
- 1982-04-14 IE IE86182A patent/IE52548B1/en unknown
- 1982-04-14 EP EP19820420053 patent/EP0069680B1/fr not_active Expired
- 1982-04-14 CA CA000400963A patent/CA1179507A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0069680A1 (fr) | 1983-01-12 |
| FR2504154B1 (fr) | 1985-09-06 |
| JPS57177943A (en) | 1982-11-01 |
| IE52548B1 (en) | 1987-12-09 |
| DK164482A (da) | 1982-10-16 |
| JPS6155576B2 (enrdf_load_stackoverflow) | 1986-11-28 |
| DE3264528D1 (en) | 1985-08-08 |
| IE820861L (en) | 1982-10-15 |
| FR2504154A1 (fr) | 1982-10-22 |
| CA1179507A (fr) | 1984-12-18 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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| ITF | It: translation for a ep patent filed | ||
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