GB1156445A - Improvements in or relating to Paints for Foundry Moulds and Cores - Google Patents
Improvements in or relating to Paints for Foundry Moulds and CoresInfo
- Publication number
- GB1156445A GB1156445A GB540468A GB540468A GB1156445A GB 1156445 A GB1156445 A GB 1156445A GB 540468 A GB540468 A GB 540468A GB 540468 A GB540468 A GB 540468A GB 1156445 A GB1156445 A GB 1156445A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sodium
- suspending agent
- refractory
- stoving
- bentonite
- 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
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
1,156,445. Mould-linings and core-coatings. STEEL CASTINGS RESEARCH & TRADE ASSOCIATION. 2 Feb., 1968, No. 5404/68. Heading B3F. [Also in Division C3] A paint for foundry moulds and cores, e.g. with sand surfaces, comprises an aqueous suspension of a granular refractory with an organic suspending agent and a complex sodium phosphate. The sodium phosphate forms a glass-like bond with the refractory on stoving and may be, e.g. sodium tripolyphosphate (Na 5 P 3 O 10 ) or sodium metaphosphate (NaPO 3 ) m where m # 6. The refractory may be zircon, silica, magnesia, magnesite, alumina, olivine or chromite. The suspending agent may be high viscosity sodium carboxymethylcellulose or hydroxyethylcellulose. Bentonite may also be present. Exemplified compositions comprise, in wt. per cent: zircon flour 70; sodium carboxymethyl cellulose (2À5% aqueous solution), 10-12; sodium hexametaphosphate, 1; bentonite 0-0À5; water 17-18À5. The stoving temperature may be 250‹ C., and the coating resists shock from molten metal up to 1350- 1650‹ C. A two-coat application is 0À020- 0À025 inch thick. The organic suspending agent decomposes and burns out during stoving and metal pouring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB540468A GB1156445A (en) | 1968-02-02 | 1968-02-02 | Improvements in or relating to Paints for Foundry Moulds and Cores |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB540468A GB1156445A (en) | 1968-02-02 | 1968-02-02 | Improvements in or relating to Paints for Foundry Moulds and Cores |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1156445A true GB1156445A (en) | 1969-06-25 |
Family
ID=9795535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB540468A Expired GB1156445A (en) | 1968-02-02 | 1968-02-02 | Improvements in or relating to Paints for Foundry Moulds and Cores |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1156445A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4002784A (en) * | 1975-11-06 | 1977-01-11 | The United States Of America As Represented By The United States Energy Research And Development Administration | Coating method for graphite |
RU2450885C1 (en) * | 2011-04-12 | 2012-05-20 | Общество с ограниченной ответственностью "РОДОНИТ" | Facing material for moulds and cores |
CN103008528A (en) * | 2012-11-09 | 2013-04-03 | 兰州兰石铸造有限责任公司 | Simple alcohol-based casting coating and preparation method thereof |
EP2774900A1 (en) * | 2013-03-05 | 2014-09-10 | Refratechnik Holding GmbH | Coating additive for coating fire resistant products containing carbon and/or silicon carbide and use of the offset |
-
1968
- 1968-02-02 GB GB540468A patent/GB1156445A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4002784A (en) * | 1975-11-06 | 1977-01-11 | The United States Of America As Represented By The United States Energy Research And Development Administration | Coating method for graphite |
RU2450885C1 (en) * | 2011-04-12 | 2012-05-20 | Общество с ограниченной ответственностью "РОДОНИТ" | Facing material for moulds and cores |
CN103008528A (en) * | 2012-11-09 | 2013-04-03 | 兰州兰石铸造有限责任公司 | Simple alcohol-based casting coating and preparation method thereof |
EP2774900A1 (en) * | 2013-03-05 | 2014-09-10 | Refratechnik Holding GmbH | Coating additive for coating fire resistant products containing carbon and/or silicon carbide and use of the offset |
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