GB692030A - Improvements relating to moulding mixtures - Google Patents
Improvements relating to moulding mixturesInfo
- Publication number
- GB692030A GB692030A GB3031249A GB3031249A GB692030A GB 692030 A GB692030 A GB 692030A GB 3031249 A GB3031249 A GB 3031249A GB 3031249 A GB3031249 A GB 3031249A GB 692030 A GB692030 A GB 692030A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- mixture
- pattern
- silica
- silicate
- 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
- B22C1/18—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 inorganic agents
- B22C1/185—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 inorganic agents containing phosphates, phosphoric acids or its derivatives
-
- 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
- B22C1/18—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 inorganic agents
- B22C1/186—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 inorganic agents contaming ammonium or metal silicates, silica sols
- B22C1/188—Alkali metal silicates
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
A refractory mould is prepared by pouring around a pattern of an article to be cast a moulding mixture comprising a slurry formed by mixing a dry aggregate with an aqueous solution of sodium silicate to which an aqueous solution of sodium acid phosphate has been added immediately prior to the mixing whereby a silicic acid gel is precipitated and binds the aggregate together, then baking to decompose the gel and form silica which is the final binder. Concentrated hydrochloric acid may be present in the silicate solution. In the example, a wax pattern is first cast, then sprayed with zircon flour suspended in a mixture of methylated spirit, ethyl silicate and hydrochloric acid. When dry the pattern is dipped into a suspension of silica flour, silica sand and magnesia in ethyl silicate, methylated spirit and water, and then "stuccoed" with firebricks. Such coated pattern is set up in a mould box, and the slurry of the mould mixture poured therein and vibrated. When set the mould is stripped and dried. The preferred aggregate is a mixture of magnesia silica flour and sand and crushed firebrick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3031249A GB692030A (en) | 1949-11-25 | 1949-11-25 | Improvements relating to moulding mixtures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3031249A GB692030A (en) | 1949-11-25 | 1949-11-25 | Improvements relating to moulding mixtures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB692030A true GB692030A (en) | 1953-05-27 |
Family
ID=10305658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3031249A Expired GB692030A (en) | 1949-11-25 | 1949-11-25 | Improvements relating to moulding mixtures |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB692030A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2851752A (en) * | 1957-04-08 | 1958-09-16 | Gen Motors Corp | High strength investment casting mold |
| EP2329900A3 (en) * | 2007-02-19 | 2012-12-12 | ASK Chemicals GmbH | Thermal recorery of casting sand |
| CN112775392A (en) * | 2019-11-06 | 2021-05-11 | 丰田自动车株式会社 | Method for producing die adhesive, method for producing die, and die |
-
1949
- 1949-11-25 GB GB3031249A patent/GB692030A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2851752A (en) * | 1957-04-08 | 1958-09-16 | Gen Motors Corp | High strength investment casting mold |
| EP2329900A3 (en) * | 2007-02-19 | 2012-12-12 | ASK Chemicals GmbH | Thermal recorery of casting sand |
| US9737927B2 (en) | 2007-02-19 | 2017-08-22 | Ask Chemicals Gmbh | Thermal regeneration of foundry sand |
| CN112775392A (en) * | 2019-11-06 | 2021-05-11 | 丰田自动车株式会社 | Method for producing die adhesive, method for producing die, and die |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB601260A (en) | Improvements in and relating to moulds for casting metals | |
| GB1031778A (en) | Mould manufacture | |
| US1909008A (en) | Highly refractory denial mold material and method of making the same | |
| GB692030A (en) | Improvements relating to moulding mixtures | |
| US3148422A (en) | Production of shell moulds | |
| GB1260439A (en) | Production of bonded particulate material | |
| GB654817A (en) | Methods of making moulding shapes from sand and other powdered, granular, pasty, or fluent material | |
| GB580058A (en) | Improvements relating to casting moulds | |
| GB672535A (en) | Improvements in or relating to refractory moulds | |
| GB712276A (en) | Preparation of moulds for precision casting | |
| GB660604A (en) | Improvements relating to casting metals | |
| GB1434370A (en) | Ceramic sheel mould | |
| GB1034368A (en) | Improvements in and relating to the lost-wax casting process | |
| US3525631A (en) | Manufacture of ceramic bodies | |
| JPS6483333A (en) | Production of casting mold | |
| GB715020A (en) | Improvements relating to moulds for casting metals | |
| GB617383A (en) | Improvements in or relating to the manufacture of refractory substances | |
| GB704004A (en) | Improvements relating to precision casting by lost-wax process | |
| GB770527A (en) | Refractory moulds for investment casting | |
| GB774184A (en) | Improvements in or relating to moulds for metal casting | |
| JPS5536031A (en) | Fluid moldable water soluble mold | |
| GB768232A (en) | Precision moulds for casting metals using polysilicate binders | |
| GB813504A (en) | Improvements relating to investment casting moulds | |
| GB1398572A (en) | Refractory linings | |
| GB248289A (en) | Improvements in compositions for permanent moulds for metal casting |