GB1409794A - Core for use in casting metals and a method of producing cored castings - Google Patents
Core for use in casting metals and a method of producing cored castingsInfo
- Publication number
- GB1409794A GB1409794A GB4139372A GB4139372A GB1409794A GB 1409794 A GB1409794 A GB 1409794A GB 4139372 A GB4139372 A GB 4139372A GB 4139372 A GB4139372 A GB 4139372A GB 1409794 A GB1409794 A GB 1409794A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- polysiloxane
- tyler
- mesh
- graphite
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/205—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of organic silicon or metal compounds, other organometallic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
1409794 Graphite compositions HOWMET CORP 6 Sept 1972 [17 Sept 1971] 41393/72 Heading C1A [Also in Division C3] A core for use in the casting of metals is formed by moulding a composition containing graphite, a polysiloxane and a catalyst for curing the polysiloxane to a pre-formed core configuration, curing, baking and firing the pre-formedcored configuration to convert the polysiloxane to a siliceous material to bond the filler together and define a dimensionally stable core. Suitable catalysts include zinc acetate, lead stearate, lead 2-ethylhexoate, calcium stearate, dibutyl triacetate, stannous octoate, lead oxide, zinc oxide, benzyltrimethyl ammonium 2-ethyl hexoate, tetramethyl ammonium acetate and benzoyl peroxide. In the specific Examples 9 and 10 where graphite is used it may be all of size -200 mesh (Tyler) or a mixture of -200 mesh (Tyler) flour and 30-100 mesh (Tyler) particles. The composition is formed into the desired core shapes and heated, suitably at 100‹ F. per hour to 1200‹ F., which temperature may be maintained for 4 hours; thereafter the core is heated at 100‹ F. per hour until the core reaches 2050‹ F. and is held at this temperature to complete the baking and firing cycle and convert the polysiloxane to a siliceous material to bond the ceramic filler particles together.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18146371A | 1971-09-17 | 1971-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1409794A true GB1409794A (en) | 1975-10-15 |
Family
ID=22664378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4139372A Expired GB1409794A (en) | 1971-09-17 | 1972-09-06 | Core for use in casting metals and a method of producing cored castings |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS4861324A (en) |
CA (1) | CA1008223A (en) |
FR (1) | FR2153014B1 (en) |
GB (1) | GB1409794A (en) |
IT (1) | IT967565B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2231055A (en) * | 1987-12-19 | 1990-11-07 | Sankin Ind Co | Dental cement |
EP1930095A3 (en) * | 2006-12-06 | 2008-06-18 | General Electric Company | Casting compositions for manufacturing metal casting and methods of manufacturing thereof |
US9863254B2 (en) | 2012-04-23 | 2018-01-09 | General Electric Company | Turbine airfoil with local wall thickness control |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2569586B1 (en) * | 1984-09-06 | 1986-09-12 | Snecma | PROCESS FOR THE PREPARATION OF FOUNDRY CORES AND CERAMIC COMPOSITION FOR USE IN CARRYING OUT SAID PROCESS |
FR2615423B1 (en) * | 1987-05-19 | 1990-04-13 | Fm Ind | FOUNDRY SAND PROCESSING PROCESS USED IN THE CONSUMABLE MODEL CASTING METHOD |
-
1972
- 1972-09-06 GB GB4139372A patent/GB1409794A/en not_active Expired
- 1972-09-13 CA CA151,633A patent/CA1008223A/en not_active Expired
- 1972-09-15 FR FR7232729A patent/FR2153014B1/fr not_active Expired
- 1972-09-16 IT IT2932272A patent/IT967565B/en active
- 1972-09-18 JP JP9355472A patent/JPS4861324A/ja active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2231055A (en) * | 1987-12-19 | 1990-11-07 | Sankin Ind Co | Dental cement |
GB2231055B (en) * | 1987-12-19 | 1991-12-04 | Sankin Ind Co | A dental cement |
EP1930095A3 (en) * | 2006-12-06 | 2008-06-18 | General Electric Company | Casting compositions for manufacturing metal casting and methods of manufacturing thereof |
US9863254B2 (en) | 2012-04-23 | 2018-01-09 | General Electric Company | Turbine airfoil with local wall thickness control |
Also Published As
Publication number | Publication date |
---|---|
JPS4861324A (en) | 1973-08-28 |
FR2153014A1 (en) | 1973-04-27 |
FR2153014B1 (en) | 1977-07-22 |
IT967565B (en) | 1974-03-11 |
CA1008223A (en) | 1977-04-12 |
DE2244954B2 (en) | 1975-05-22 |
DE2244954A1 (en) | 1973-04-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |