CA2484809A1 - Control pin - Google Patents

Control pin Download PDF

Info

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
Application number
CA002484809A
Other languages
French (fr)
Other versions
CA2484809C (en
Inventor
Mark Vincent
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pyrotek Inc
Original Assignee
Pyrotek Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pyrotek Inc filed Critical Pyrotek Inc
Publication of CA2484809A1 publication Critical patent/CA2484809A1/en
Application granted granted Critical
Publication of CA2484809C publication Critical patent/CA2484809C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14Closures
    • B22D41/16Closures 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
    • B22D41/18Stopper-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.
CA2484809A 2003-10-24 2004-10-15 Control pin Expired - Fee Related CA2484809C (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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

Similar Documents

Publication Publication Date Title
CA2484809A1 (en) Control pin
US7278464B2 (en) Control pin
US20060182971A1 (en) Tabbed ceramic article for improved interlaminar strength
CA2376072A1 (en) Lightweight dry refractory
SE462593B (en) CERAMIC BENEFIT AND USE THEREOF
SE434806B (en) ELFFAST WRAPPING
KR20130031256A (en) Composite refractory for an inner lining of a blast furnace
CA2027345C (en) Combined structures of ceramic materials and super concrete
US5691259A (en) Process of making a self sintering ceramic composition
JPH07206535A (en) Fiber-reinforced refractory structure and ts production
KR20220047497A (en) Method for making fire-resistant articles
AU742062B2 (en) Castable refractory composition and methods of making refractory bodies
JP3861130B2 (en) Spraying method for rotary kiln fireproof lining
Ren et al. Development of Wear-Resistant Ceramics Sintered at Lower Temperature
Mu Alumina based ceramics reinforced by in-situ mullite whisker
JPH0343245A (en) Heat insulating ceramic composite and preparation thereof
Vasilos Structural ceramic composites
CA2880470A1 (en) Refractory ceramic gas purging plug and a process for manufacturing said gas purging plug
JPS62471Y2 (en)
KR970027018A (en) Composite material of ceramic sintered body and heat resistant steel, and great bars made of the composite material
JPH1054669A (en) Forming method of refractory furnace structure
Ozeki et al. SINTERING EFFECTS OF ALUMINA CERAMICS WITH MICROWAVE FURNACE LINED WITH HIGH ALUMINA BRICKS
Starostin et al. Possibility to control the reinforcing phase distribution in the alumina-zirconia eutectic composite
Shi et al. Synthetic Raw Materials for Refractories in China
Roman CHEMICAL VAPOUR INFILTRATION AS A METHOD FOR PREPARING CERAMIC MATRIX COMPOSITES

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20131015