NL7711109A - Foundry moulds and cores - made by mixing refractory powder with two liquids or suspensions which form a rigid gel - Google Patents
Foundry moulds and cores - made by mixing refractory powder with two liquids or suspensions which form a rigid gelInfo
- Publication number
- NL7711109A NL7711109A NL7711109A NL7711109A NL7711109A NL 7711109 A NL7711109 A NL 7711109A NL 7711109 A NL7711109 A NL 7711109A NL 7711109 A NL7711109 A NL 7711109A NL 7711109 A NL7711109 A NL 7711109A
- Authority
- NL
- Netherlands
- Prior art keywords
- liq
- pref
- refractory powder
- suspensions
- cores
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
-
- 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
- B22C1/183—Sols, colloids or hydroxide gels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
A mould or core is made, esp. for casting molten metal, where a pattern is coated with a slurry consisting of two liqs., >=1 liq. contg. refractory powder(s). The two liqs. are stable, but when sprayed on the pattern they combine to form a rigid coherent gel. Each liq. is pref. held in a reservoir and fed to a separate nozzle. One liq. pref. contains a binder and a retarder hindering gel formation, whereas the other liq. contains an accelerator promoting gel formation. The binder is pref a Zr salt producing an acid or alkaline aq. soln. and contg. a retarder, viz. magnesium-acetate or lactate, ammonium lactate, glycine, betaine, fructose, or polyvalent alcohols, where the accelerator is an amino-alcohol, morpholine, calcined MgO powder, possibly in spinels. Used for the casting of ferrous or nonferrous metals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7711109A NL7711109A (en) | 1977-10-10 | 1977-10-10 | Foundry moulds and cores - made by mixing refractory powder with two liquids or suspensions which form a rigid gel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7711109A NL7711109A (en) | 1977-10-10 | 1977-10-10 | Foundry moulds and cores - made by mixing refractory powder with two liquids or suspensions which form a rigid gel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7711109A true NL7711109A (en) | 1979-04-12 |
Family
ID=19829319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7711109A NL7711109A (en) | 1977-10-10 | 1977-10-10 | Foundry moulds and cores - made by mixing refractory powder with two liquids or suspensions which form a rigid gel |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL7711109A (en) |
-
1977
- 1977-10-10 NL NL7711109A patent/NL7711109A/en not_active Application Discontinuation
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1508888A (en) | Investment casting mould and process | |
| GB1255907A (en) | Salt core for use in foundries | |
| FR2403847A1 (en) | Foundry moulds and cores - made by mixing refractory powder with two liquids or suspensions which form a rigid gel | |
| NL7711109A (en) | Foundry moulds and cores - made by mixing refractory powder with two liquids or suspensions which form a rigid gel | |
| GB1518250A (en) | Method of making a unitary pattern assembly | |
| GB1219379A (en) | A method of making porous metal moulds | |
| JPS5557368A (en) | Production of hollow casting | |
| GB2011812A (en) | Calcium Carbonate Based Casting Cores | |
| GB1047774A (en) | A method of producing compound workpieces | |
| Nakamura | Preparation of Casting Plans For Making Intake-Manifold Castings Free From Shrinkage Porosity By Use of Solidification State Diagrams | |
| GB1171196A (en) | Production of Moulds | |
| US3815658A (en) | Process for making a metallurgically slow reacting mold | |
| GB1160090A (en) | Moulds and Cores for Casting | |
| GB797514A (en) | Process for manufacture of casting moulds for the casting of metals | |
| GB1469746A (en) | Manufacture of cast ferrous metal dies | |
| JPS5680344A (en) | Binder for shell mold | |
| Shklennik | The State of the Art and Prospects of Investment Casting | |
| GB1216772A (en) | Surfaces for contacting molten metal and a method of forming steel ingots | |
| GB1211994A (en) | A method of making cast iron castings | |
| GB952788A (en) | Moulds, cores and the like suitable for foundry and like purposes | |
| SU774767A1 (en) | Mixture for producing ceramic casting mould | |
| Stanciu et al. | Improving the Mould Geometry for Reduced Specific Metal Consumption | |
| GB1125124A (en) | Improved mould and methods for its production and for its use in precision casting | |
| Saucedo et al. | The development of surfaces in steel ingots and strands | |
| GB1091676A (en) | Improvements in mould manufacture and the production of mouldings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BV | The patent application has lapsed |