WO2000043152A1 - Alloy for semi-solid casting process - Google Patents
Alloy for semi-solid casting process Download PDFInfo
- Publication number
- WO2000043152A1 WO2000043152A1 PCT/US1999/030322 US9930322W WO0043152A1 WO 2000043152 A1 WO2000043152 A1 WO 2000043152A1 US 9930322 W US9930322 W US 9930322W WO 0043152 A1 WO0043152 A1 WO 0043152A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- less
- casting
- semi
- slug
- alloy
- Prior art date
Links
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
- B22D17/10—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled with horizontal press motion
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/12—Making non-ferrous alloys by processing in a semi-solid state, e.g. holding the alloy in the solid-liquid phase
Definitions
- the present invention relates to the field of metal casting.
- the invention is concerned with a semi-solid casting process using an aluminum alloy.
- the present invention solves the prior art problems discussed above and provides a distinct advance in the state of the art.
- the casting process hereof enables the use of 390 aluminum alloy in the semi-solid casting process.
- the preferred method in accordance with the present invention includes the steps of producing a slug of aluminum alloy from an MHD or grain refined billet, heating the slug to a predetermined semi-solid temperature and maintain the temperature for a predetermined time, injecting the slug into a mold cavity to form a casting therein, and then removing the casting from the cavity.
- these steps are performed without adding a reagent to the slug and the preferred alloy is 390 aluminum alloy.
- Other preferred aspects of this present invention are described herein.
- Figure 1 is the sole drawing figure and is a schematic illustration of the preferred semi-solid casting apparatus using a slug of 390 aluminum alloy for implementing the preferred method in accordance with the present invention.
- Fig. 1 schematically illustrates conventional semi-solid casting apparatus 10 for implementing the preferred method in accordance with the present invention.
- Apparatus 10 includes hydraulic cylinder or ram 12 and mold 14 defining mold cavity 16 therein.
- ram 12 injects semi- solid slug 18 into cavity 16 to form casting 20 therein.
- Casting 20 is then removed from mold 14 and cooled.
- slug 18 is composed of 390 aluminum alloy or the equivalent thereof.
- 390 aluminum alloy includes: silicon between about 16.0 and 18.0%(by weight), iron less than about 0.40 %, copper between about 4.0 and 5.0%, manganese less than about 0.10%, magnesium between about 0.50 and 0.65%, nickel less than about 0.10%, zinc less than about 0.05%, titanium less than about 0.20%, lead and tin less than about 0.03%, with the remainder of alloy being aluminum.
- Slug 18 is produced by cutting from an MHD or grain refined billet. Such a billet presents the desired microstructure to produce casting 20. Other methods may also be used to produce slug 18, but this is the most common method in use today.
- the volume of slug 18 is predetermined and substantially equal to the volume of finished casting 20. After cutting slug 18 from the billet, slug 18 is heated to about
- slug 18 is solid enough to retain its shape but is sufficiently soft to flow into cavity 16 and take the shape thereof in order to form casting 20 during the semi-solid casting process.
- a reagent or other chemicals cannot be added to slug 18 because of its semi-solid state.
- a slug 18 of 390 aluminum alloy can be heated to the semi-solid temperature without significantly losing the desired microstructure as presented in the billet from which the slug was cut.
- the slug 18, at the semi-solid temperature can be injected into mold cavity 16 of semi-solid casting apparatus 10 without significantly losing the desired microstructure in the resulting casting 20.
- casting 20 presents a tensile strength between about 51 and 57 ksi and an elongation of less than about 1 % after the casting undergoes preferred heat treatment procedure T6 consisting of solution treatment at 496°C for eight hours, water quenched, and then artificially aged at 176°C for five hours followed by conventional cooling. Finally, it has been discovered that the semi-solid process can be used without abnormal wear on mold 14.
- the present invention enables the production of wear resistant, aluminum alloy castings using the semi-solid casting process with all of the attendant benefits of the semi-solid casting process. It will also be appreciated that the present invention encompasses many variations in the preferred embodiment described herein. For example, some deviation can occur in the specified ranges for the chemical components of the preferred 390 aluminum alloy without substantially defecting the quality of the resulting casting. Also, other heat treatment procedures can be used. Having thus described the preferred embodiment, the following is claimed as new and desired to be secured by Letters Patent:
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU21986/00A AU2198600A (en) | 1999-01-26 | 1999-12-20 | Alloy for semi-solid casting process |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23840599A | 1999-01-26 | 1999-01-26 | |
US09/238,405 | 1999-01-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000043152A1 true WO2000043152A1 (en) | 2000-07-27 |
Family
ID=22897754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/030322 WO2000043152A1 (en) | 1999-01-26 | 1999-12-20 | Alloy for semi-solid casting process |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2198600A (en) |
WO (1) | WO2000043152A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2366225A (en) * | 2000-07-11 | 2002-03-06 | Honda Motor Co Ltd | Injection molding metallic matertials |
WO2004027101A2 (en) * | 2002-09-20 | 2004-04-01 | Spx Corporation | Semi-solid metal casting process and product thereof |
WO2005007912A1 (en) * | 2003-07-15 | 2005-01-27 | Spx Corporation | Semi-solid metal casting process of hypereutectic aluminum alloys |
CN100336619C (en) * | 2005-07-29 | 2007-09-12 | 哈尔滨工业大学 | Continuous preparation facilities for casting semisolid blank made from alloy in lightweight |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5846350A (en) * | 1995-04-14 | 1998-12-08 | Northwest Aluminum Company | Casting thermal transforming and semi-solid forming aluminum alloys |
-
1999
- 1999-12-20 WO PCT/US1999/030322 patent/WO2000043152A1/en active Application Filing
- 1999-12-20 AU AU21986/00A patent/AU2198600A/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5846350A (en) * | 1995-04-14 | 1998-12-08 | Northwest Aluminum Company | Casting thermal transforming and semi-solid forming aluminum alloys |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2366225A (en) * | 2000-07-11 | 2002-03-06 | Honda Motor Co Ltd | Injection molding metallic matertials |
GB2366225B (en) * | 2000-07-11 | 2004-05-19 | Honda Motor Co Ltd | Method for injection molding metallic materials |
WO2004027101A2 (en) * | 2002-09-20 | 2004-04-01 | Spx Corporation | Semi-solid metal casting process and product thereof |
WO2004027101A3 (en) * | 2002-09-20 | 2004-06-03 | Spx Corp | Semi-solid metal casting process and product thereof |
WO2005007912A1 (en) * | 2003-07-15 | 2005-01-27 | Spx Corporation | Semi-solid metal casting process of hypereutectic aluminum alloys |
US6994147B2 (en) | 2003-07-15 | 2006-02-07 | Spx Corporation | Semi-solid metal casting process of hypereutectic aluminum alloys |
CN100336619C (en) * | 2005-07-29 | 2007-09-12 | 哈尔滨工业大学 | Continuous preparation facilities for casting semisolid blank made from alloy in lightweight |
Also Published As
Publication number | Publication date |
---|---|
AU2198600A (en) | 2000-08-07 |
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