CA2484809A1 - Control pin - Google Patents
Control pin Download PDFInfo
- Publication number
- CA2484809A1 CA2484809A1 CA002484809A CA2484809A CA2484809A1 CA 2484809 A1 CA2484809 A1 CA 2484809A1 CA 002484809 A CA002484809 A CA 002484809A CA 2484809 A CA2484809 A CA 2484809A CA 2484809 A1 CA2484809 A1 CA 2484809A1
- Authority
- CA
- Canada
- Prior art keywords
- control pin
- pin according
- body member
- elongate body
- wear
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
- B22D41/18—Stopper-rods therefor
Abstract
A control pin (12) for controlling the flow of liquid metal in a casting process includes an elongate body member (34), the body member being made at least partially of a composite ceramic material that includes a fibrous reinforcing material embedded within a ceramic matrix. The body member (34) is preferably hollow and includes a wear-resistant tip (36) at one end.
Claims (21)
1. A control pin for controlling the flow of liquid metal in a casting process, the control pin including an elongate body member and a wear-resistant tip at one end of the elongate body member, the body member being made at least partially of a laminated composite ceramic material that includes multiple layers of a reinforcing fabric embedded within a cast ceramic matrix.
2. A control pin according to claim 1, wherein the reinforcing, fabric comprises a woven reinforcing fabric.
3. A control pin according to claim 1 or claim 2, wherein the reinforcing fabric is made of glass.
4. A control pin according to any one of the preceding claims, wherein the composite ceramic material includes between 2 and 25 layers, and preferably between 4 and 10 layers, of reinforcing fabric.
5. A control pin according to any one of the preceding claims, wherein the matrix material is selected from a group comprising fused silica, alumina, mullite, silicon carbide, silicon nitride, silicon aluminium oxy-nitride, zircon, magnesia, zirconia, graphite, calcium silicate, boron nitride, aluminium nitride and titanium diboride, and mixtures of these materials.
6. A control pin according to any one of the preceding claims, wherein the matrix material is calcium based.
7. A control pin according to any one of the preceding claims, wherein the matrix material includes calcium silicate and silica.
8. A control pin according to any one of the preceding claims, wherein the matrix material includes Wollastonite and colloidal silica.
9. A control pin according to any one of the preceding claims, wherein the control pin includes a non-stick surface coating.
10. A control pin according to claim 9, wherein the coating includes boron nitride.
11. A control pin according to any one of the preceding claims, wherein the elongate body member is substantially cylindrical.
12. A control pin according to any one of the preceding claims, wherein the elongate body member is at least partially hollow.
13. A control pin according to claim 12, wherein the elongate body member includes a circumferential wall having a wall thickness in the range 1-10mm.
14. A control pin according to any one of the preceding claims, wherein the wear-resistant tip is inserted at least partially into one end of the elongate body member.
15. A control pin according to any one of the preceding claims, wherein the elongate body member and the wear-resistant tip have complementary locking formations.
16. A control pin according to claim 15, wherein the complementary locking formations include complementary recesses on the elongate body member and the wear-resistant tip, which are filled with an adhesive or cement.
17. A control pin according to any one of the preceding claims, wherein the wear-resistant tip is made of a ceramic material.
18. A control pin according to claim 17, wherein the wear-resistant tip is made of a material selected from a group comprising fused silica, alumina, mullite, silicon carbide, silicon nitride, silicon aluminium oxy-nitride, zircon, magnesia, zirconia, graphite, calcium silicate, boron nitride, aluminium titanate, aluminium nitride and titanium diboride.
19. A control pin according to any one of the preceding claims, wherein the wear-resistant tip is made of a material having a density in the range 1800-3000kg/m3, preferably 1900 2500kg/m3.
20. A control pin according to any one of the preceding claims, wherein the control pin has a length in the range 200-1000mm.
21. A control pin according to any one of the preceding claims, wherein the control pin has a diameter in the range 20-75mm.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0324861.4 | 2003-10-24 | ||
GB0324861A GB2407287A (en) | 2003-10-24 | 2003-10-24 | Stopper rod made from reinforced ceramic |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2484809A1 true CA2484809A1 (en) | 2005-04-24 |
CA2484809C CA2484809C (en) | 2012-04-17 |
Family
ID=29595775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2484809A Expired - Fee Related CA2484809C (en) | 2003-10-24 | 2004-10-15 | Control pin |
Country Status (9)
Country | Link |
---|---|
US (1) | US7165757B2 (en) |
EP (1) | EP1525936B1 (en) |
AT (1) | ATE416054T1 (en) |
CA (1) | CA2484809C (en) |
DE (1) | DE602004018086D1 (en) |
ES (1) | ES2318229T3 (en) |
GB (1) | GB2407287A (en) |
NO (1) | NO20044407L (en) |
SI (1) | SI1525936T1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8312612B2 (en) * | 2002-04-11 | 2012-11-20 | Blue Sky Vision Partners, Llc | Refurbished punch tip and method for manufacture and refurbishing |
US7033156B2 (en) * | 2002-04-11 | 2006-04-25 | Luka Gakovic | Ceramic center pin for compaction tooling and method for making same |
JP4354315B2 (en) | 2004-03-22 | 2009-10-28 | 東芝機械株式会社 | Aluminum melt contact member and method of manufacturing the same |
GB2427160B (en) * | 2005-06-16 | 2009-04-15 | Pyrotek Inc | Control pin |
JP4499024B2 (en) * | 2005-12-02 | 2010-07-07 | 東芝機械株式会社 | Hot water supply pipe for aluminum die casting and method for manufacturing the same |
WO2007111257A1 (en) * | 2006-03-24 | 2007-10-04 | Toshiba Kikai Kabushiki Kaisha | Melt feed pipe for aluminum die casting |
BRPI0712442A8 (en) * | 2006-05-31 | 2017-10-24 | Unifrax I Llc | SPARE THERMAL INSULATION PLATE |
US20100032455A1 (en) * | 2008-08-08 | 2010-02-11 | Timothy James Cooper | Control pin and spout system for heating metal casting distribution spout configurations |
WO2011043759A1 (en) | 2009-10-08 | 2011-04-14 | Wagstaff, Inc. | Control pin and spout system for heating metal casting distribution spout configurations |
CN107532606B (en) * | 2015-02-27 | 2022-07-08 | 派瑞泰克有限公司 | Molten metal pump and related vortex generating device, crucible and impeller |
EP3274115B1 (en) | 2015-03-26 | 2020-06-03 | Pyrotek High-temperature Industrial Products Inc. | Heated control pin |
US10487224B2 (en) | 2016-06-06 | 2019-11-26 | Unifrax I, Llc | Refractory coating material containing low biopersistent fibers and method for making the same |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3111732A (en) * | 1958-01-30 | 1963-11-26 | Kaiser Aluminium Chem Corp | Metallurgy |
JPS5044125A (en) * | 1973-08-22 | 1975-04-21 | ||
JPS5623507A (en) * | 1979-08-02 | 1981-03-05 | Toshiba Corp | Exhaust valve |
US4705062A (en) * | 1987-02-18 | 1987-11-10 | Cameron Iron Works, Inc. | Choke and improved needle tip therefor |
FR2611151B1 (en) * | 1987-02-20 | 1991-06-14 | Daussan & Co | DEVICE FOR PREHEATING AND / OR SEALING AND UNCOUPLING A CASTING ORIFICE AND METHOD FOR ITS IMPLEMENTATION |
JPH03198957A (en) * | 1989-12-26 | 1991-08-30 | Akechi Ceramics Kk | Tundish stopper |
JPH03198959A (en) * | 1989-12-26 | 1991-08-30 | Akechi Ceramics Kk | Tundish stopper |
US5082633A (en) * | 1990-06-14 | 1992-01-21 | The Dow Chemical Company | Mix head for mixing reactive chemicals |
US5409165A (en) * | 1993-03-19 | 1995-04-25 | Cummins Engine Company, Inc. | Wear resistant fuel injector plunger assembly |
US5441235A (en) * | 1994-05-20 | 1995-08-15 | Eaton Corporation | Titanium nitride coated valve and method for making |
DE69524432T2 (en) * | 1994-09-12 | 2002-08-01 | Toshiba Kawasaki Kk | FIBER COMPOSITE BODY ON A CERAMIC BASE |
US5880046A (en) * | 1998-01-23 | 1999-03-09 | Cerminco Inc. | Moldable refractory composition and process for preparing the same |
EP0949026A1 (en) * | 1998-03-31 | 1999-10-13 | Vesuvius Crucible Company | Thermal shock-resistant ceramic article |
CN1079712C (en) * | 1999-02-09 | 2002-02-27 | 安阳钢铁集团有限责任公司 | Conticasting tundish composite material block stopper and its production method |
-
2003
- 2003-10-24 GB GB0324861A patent/GB2407287A/en not_active Withdrawn
-
2004
- 2004-10-12 AT AT04024287T patent/ATE416054T1/en not_active IP Right Cessation
- 2004-10-12 EP EP04024287A patent/EP1525936B1/en active Active
- 2004-10-12 DE DE602004018086T patent/DE602004018086D1/en active Active
- 2004-10-12 SI SI200431035T patent/SI1525936T1/en unknown
- 2004-10-12 ES ES04024287T patent/ES2318229T3/en active Active
- 2004-10-15 CA CA2484809A patent/CA2484809C/en not_active Expired - Fee Related
- 2004-10-18 NO NO20044407A patent/NO20044407L/en not_active Application Discontinuation
- 2004-10-22 US US10/971,586 patent/US7165757B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
GB0324861D0 (en) | 2003-11-26 |
DE602004018086D1 (en) | 2009-01-15 |
ATE416054T1 (en) | 2008-12-15 |
SI1525936T1 (en) | 2009-06-30 |
US20050116192A1 (en) | 2005-06-02 |
GB2407287A (en) | 2005-04-27 |
EP1525936A1 (en) | 2005-04-27 |
NO20044407L (en) | 2005-04-25 |
EP1525936B1 (en) | 2008-12-03 |
CA2484809C (en) | 2012-04-17 |
ES2318229T3 (en) | 2009-05-01 |
US7165757B2 (en) | 2007-01-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20131015 |