GB815938A - Moulds and cores for casting of metals - Google Patents
Moulds and cores for casting of metalsInfo
- Publication number
- GB815938A GB815938A GB3892556A GB3892556A GB815938A GB 815938 A GB815938 A GB 815938A GB 3892556 A GB3892556 A GB 3892556A GB 3892556 A GB3892556 A GB 3892556A GB 815938 A GB815938 A GB 815938A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphate
- sodium
- moulds
- cores
- casting
- 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
- 238000005058 metal casting Methods 0.000 title 1
- 239000004115 Sodium Silicate Substances 0.000 abstract 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N Sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract 5
- 229910052911 sodium silicate Inorganic materials 0.000 abstract 5
- 235000019794 sodium silicate Nutrition 0.000 abstract 4
- 229940032158 sodium silicate Drugs 0.000 abstract 4
- 239000011162 core material Substances 0.000 abstract 3
- 239000010452 phosphate Substances 0.000 abstract 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K [O-]P([O-])([O-])=O Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229920001353 Dextrin Polymers 0.000 abstract 1
- 239000004375 Dextrin Substances 0.000 abstract 1
- 229920002472 Starch Polymers 0.000 abstract 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N Zirconium(IV) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 abstract 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 235000019425 dextrin Nutrition 0.000 abstract 1
- 150000004677 hydrates Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000019795 sodium metasilicate Nutrition 0.000 abstract 1
- 235000019698 starch Nutrition 0.000 abstract 1
- 239000008107 starch Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 235000000346 sugar Nutrition 0.000 abstract 1
- 229910052845 zircon Inorganic materials 0.000 abstract 1
- 229910052846 zircon Inorganic materials 0.000 abstract 1
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
- B22C1/162—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 use of a gaseous treating agent for hardening the binder
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
815,938. Mould and core materials. ROLLSROYCE Ltd. Dec. 20, 1957 [Dec. 20, 1956], No. 38925/56. Class 83 (1). Moulds and cores are made of powdered refractory such as zircon, silica sand and fireclay grog mixed with sodium-silicate solution and anhydrous calcium mono-acid-phosphate, and hardened by CO 2 , Organic substances such as starch, sugar, dextrin may also be added. The phosphate eliminates the fritting-action, which occurs at high temperatures and makes core or mould material difficult to remove from the casting. The amount of phosphate depends upon the amount of sodium silicate present, and may vary from an equal quantity by weight of the sodium silicate, calculated as a dry-weight, down to one eighth thereof. The term sodiumsilicate includes sodium-metasilicate and its hydrates.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB815938A true GB815938A (en) | 1959-07-01 |
Family
ID=1745410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3892556A Expired GB815938A (en) | 1956-12-20 | Moulds and cores for casting of metals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB815938A (en) |
-
1956
- 1956-12-20 GB GB3892556A patent/GB815938A/en not_active Expired
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