GB792172A - Process for refining the crystalline structure of hypereutectic aluminium-silicon alloys - Google Patents
Process for refining the crystalline structure of hypereutectic aluminium-silicon alloysInfo
- Publication number
- GB792172A GB792172A GB34069/56A GB3406956A GB792172A GB 792172 A GB792172 A GB 792172A GB 34069/56 A GB34069/56 A GB 34069/56A GB 3406956 A GB3406956 A GB 3406956A GB 792172 A GB792172 A GB 792172A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- melt
- added
- refining
- crystalline structure
- 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
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 238000007670 refining Methods 0.000 title 1
- 150000001875 compounds Chemical class 0.000 abstract 3
- 239000000155 melt Substances 0.000 abstract 3
- 229910052736 halogen Inorganic materials 0.000 abstract 2
- 229910021364 Al-Si alloy Inorganic materials 0.000 abstract 1
- 229910020491 K2TiF6 Inorganic materials 0.000 abstract 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 239000011888 foil Substances 0.000 abstract 1
- -1 halogen salt Chemical class 0.000 abstract 1
- 150000002367 halogens Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Hypereutectic Al-Si alloys are treated to obtain a fine grained crystal structure on casting by addition of P and/or P compounds into the melt in the form of a fine powder most of the particles of which are below 60 microns in size. The P and/or P compound may be added with a carrier such as a halogen salt, preferably KCl or Ca Cl2 the mixed substances being ground together before use. Other known grain refiners may also be added such as Ti, Ti salts, B or Zr compounds. A suitable mixture containing red phosphorus 5-40 per cent, KCl 50-90 per cent, K2TiF6 2-20 per cent is added in amount of 0.5-1.0 per cent of the weight of the melt which is held at a temperature between 730 DEG C. and 800 DEG C. The additives may be introduced by means of a plunger, being packed in bags or tubes of Al foil. The effect of the addition is enhanced by subsequent treatment of the melt with a halogen e.g. Cl gas.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE792172X | 1955-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB792172A true GB792172A (en) | 1958-03-19 |
Family
ID=6706187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34069/56A Expired GB792172A (en) | 1955-11-16 | 1956-11-07 | Process for refining the crystalline structure of hypereutectic aluminium-silicon alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB792172A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3122460A (en) * | 1959-10-28 | 1964-02-25 | Nippon Electric Co | Method of producing improved alloyed silicon-aluminum p-n junctions |
| WO1992015719A1 (en) * | 1991-03-04 | 1992-09-17 | Kb Alloys, Inc. | Aluminum master alloys containing strontium and boron for grain refining and modifying |
| CN102912166A (en) * | 2012-10-31 | 2013-02-06 | 济南山大有色金属铸造有限公司 | Aluminum alloy sodium-free refining agent and method for producing same |
| CN112410591A (en) * | 2020-10-30 | 2021-02-26 | 滨州渤海活塞有限公司 | Super-long-effect double-modification method for hypereutectic aluminum-silicon alloy |
| CN116970831A (en) * | 2023-09-13 | 2023-10-31 | 四川航天职业技术学院(四川航天高级技工学校) | Refining method of high-silicon aluminum alloy |
-
1956
- 1956-11-07 GB GB34069/56A patent/GB792172A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3122460A (en) * | 1959-10-28 | 1964-02-25 | Nippon Electric Co | Method of producing improved alloyed silicon-aluminum p-n junctions |
| WO1992015719A1 (en) * | 1991-03-04 | 1992-09-17 | Kb Alloys, Inc. | Aluminum master alloys containing strontium and boron for grain refining and modifying |
| US5230754A (en) * | 1991-03-04 | 1993-07-27 | Kb Alloys, Inc. | Aluminum master alloys containing strontium, boron, and silicon for grain refining and modifying aluminum alloys |
| CN102912166A (en) * | 2012-10-31 | 2013-02-06 | 济南山大有色金属铸造有限公司 | Aluminum alloy sodium-free refining agent and method for producing same |
| CN102912166B (en) * | 2012-10-31 | 2013-09-18 | 济南山大有色金属铸造有限公司 | Aluminum alloy sodium-free refining agent and method for producing same |
| CN112410591A (en) * | 2020-10-30 | 2021-02-26 | 滨州渤海活塞有限公司 | Super-long-effect double-modification method for hypereutectic aluminum-silicon alloy |
| CN112410591B (en) * | 2020-10-30 | 2022-03-04 | 滨州渤海活塞有限公司 | Super-long-effect double-modification method for hypereutectic aluminum-silicon alloy |
| CN116970831A (en) * | 2023-09-13 | 2023-10-31 | 四川航天职业技术学院(四川航天高级技工学校) | Refining method of high-silicon aluminum alloy |
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