US2895838A - Metal casting mold material - Google Patents

Metal casting mold material Download PDF

Info

Publication number
US2895838A
US2895838A US608000A US60800056A US2895838A US 2895838 A US2895838 A US 2895838A US 608000 A US608000 A US 608000A US 60800056 A US60800056 A US 60800056A US 2895838 A US2895838 A US 2895838A
Authority
US
United States
Prior art keywords
phosphate
phosphates
mold
alkali metal
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 - Lifetime
Application number
US608000A
Other languages
English (en)
Inventor
Frank P Henda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Diamond Shamrock Corp
Original Assignee
Diamond Alkali Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to LU35432D priority Critical patent/LU35432A1/xx
Application filed by Diamond Alkali Co filed Critical Diamond Alkali Co
Priority to US608000A priority patent/US2895838A/en
Priority to GB27806/57A priority patent/GB870805A/en
Priority to FR1187827D priority patent/FR1187827A/fr
Priority to BE560558D priority patent/BE560558A/fr
Application granted granted Critical
Publication of US2895838A publication Critical patent/US2895838A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders

Definitions

  • This invention relates to improvements in W silicate-containing mo s a apte ened by impregnation with carbon dioxide or other gaseous curing agent to molds formed therefrom and to methods for their preparation and use.
  • molds and cores from sand-silicate mixtures which are cured or hardened in the desired casting-defining shapes by exposure to carbon dioxide or other gaseous curing materials.
  • the curing of molds embodying binders of this type involves a chemical reaction between carbon dioxide or other gaseous material and the alkali metal silicate dispersed throughout the sand or other refractory material substantially completely to convert the alkali metal silicate into a uniformly-dispersed silicon dioxide gel binder and an alkali metal carbonate.
  • prior silicate-containing moldforming compositions generally have been characterized by excessive evolution of steam and/ or other gases during casting, if sufficient organic additive was present to provide satisfactory collapsibility.
  • the present invention comprises an improvement over the prior inventions described and claimed in the above-identified applications especially with respect to improvements in the collapsibility or so-called fired strength of alkali metal silicate-containing mold-forming compositions.
  • a further object of the invention is to provide new and improved compositions for forming alkali metal silicate- 5 containing molds adapted to be cured by exposure to carbon dioxide or other substances.
  • a still further object of the invention is to provide new and improved methods of metal casting.
  • a still further object of the invention is to provide an improved shell mold and methods of shell molding.
  • mold is intended in a generic sense to mean casting forms which include both molds and cores, this invention in no manner being limited to the former. Moreover, mold is intended to include various patterns for use in the casting art, as well as shell molds including shell mold-forming elements in addition'to a completed shell mold structure prepared by assembling two or more complementary thin-walled shell mold elements. Hence, it will be appreciated that the term mold is used to include a casting-defining surface broadly.
  • the present invention contemplates as a mold-forming composition a mix tgrepimammfii rnptq ortionof .afinelyrL refractory ater al.amino:. pr.oponion-n.an alkali metafl filieafe'and a min r proportion lnfhatl least 'ofiephbsphateiieif'a"salt'or e ster of anoxygen acid of fifimfiis'ifgiiding 5Ttidffbf orthophosphoric v E).
  • This invention also contemplates as a novl'c'dmposition of matter a mixture of a major proportion of a finely-divided refractory material,
  • composition which can be cured readily by carbon dioxide or other curing agent to form a rigid mold having an excellent unfired or green strength and yet which after firing and solidification of a casting therein, is characterized by such a low fired strength as to permit its ready removal from the casting surfaces.
  • the phosphate employed generally should be an alkali phosphate, the term alkali phosphate being intended to include both alkali metal phosphates and alkaline earth metal phosphates as well as ammonium phosphates.
  • phosphates of the alkaline earth metals generally are contemplated such as calcium phosphates, magnesium phosphates, beryllium fi plelsss rmimr osph t a.bfi ifiiil i fidium phosphates, although calcium phosphates'cornprise the preferred type of alkaline, .earth metal phosphates.
  • alkali metal phosphates include, in addition to sodium phosphates, phosphates of lithium, potassium, rubidium and cesium. It will be further understood, of course, that of these materials, sodium phosphates and potassium phosphates represent the most readily available and practicable materials, it being specifically preferred that sodium phosphates be employed from the alkali metal phosphate group.
  • organic phosphates are advantageous and are intended to be encompassed by the term phosphate.
  • triaryl phosphates e.g., tricresyl phosphate and triphenyl phosphate, trialkyl phosphates, and the like, as well as diand mono-organic phosphates, may be used.
  • alkali phosphates of the foregoing types are calcium phosphates, such as CaHPO CaH (PO and Ca(PO tricalcium phosphate being preferred.
  • Specific phosphates include metaphosphates, e.g., NaPO (NaPO KPO; and their hydrates; polyphosphates, e.g., Na P O and its hydrates; pyrophosphates, e.g., Na P O and its hydrates; orthophosphates, e.g., NaH POI, and its hydrates including NaH- PO -H O, Na' 'HPUZWI-I O, and Na PO,,-12H O; and alkali metal phosphates such as monoand di-alkali metal phosphates, e.g., monosodium phosphate and disodium phosphate, monopo assium p e and dipotassium phosphate, and ammonium phosphates, e.g., NH
  • a phosphate in the form of a relatively inexpensive material such as one of the naturally occurring phosphatecontaining minerals such as are used as fertilizers and in other applications.
  • a relatively inexpensive material such as one of the naturally occurring phosphatecontaining minerals such as are used as fertilizers and in other applications.
  • Such materials provide the desired phosphate largely as a calcium phosphate and do not contain as non-phosphate ingredients substances which interfere with the formation of molds and casting of metals therein when this type of phosphate is employed in combination with an alkali metal silicate in accordance with the practice of this invention.
  • ground phosphate rock substances such as that which contains about 68%-78% tricalcium phosphate and minor amounts of calcium fluoride, silica and oxides of iron and aluminum.
  • a typical analysis of such a material is the following wherein the quantities are expressed in terms of percent by weight:
  • Other finely-divided phosphate rock materials variously termed in the trade but generally characterized by containing a substantial proportion of available P also may be used.
  • those products containing apatite, (CaF)Ca (PO or CaF -3(Ca P O and the so-called bone phosphates may be used.
  • silicates of the various alkali metals including potassium, sodium, cesium, rubidium and lithium may be employed, although sodium silicates and potassium silicates represent the more readily available silicates while sodium silicates clearly constitute the preferred and most practicable silicates. For that reason, special reference will be made herein to sodium silicates although it will be understood that the present invention is not limited thereto.
  • alkali metal silicate preferably a odium silicate
  • alkali metal silicate may include silicates having varying silic em oxide ratios, e.g., those having a silica to alkali metal oxide ratio greater than l.0:1.0 and desirably within the range from about 1.5 to 3.8 generally being suitable, those silicates having a silica to alkali metal oxide ratio within the range from about 2.4 to 2.84 being preferred at present.
  • both liquid and dry silicates may be employed using, where necessary, sufficient water or other liquid to provide the desired silicate solution, slurry, plastic mixture or the like, depending upon the application intended.
  • the present invention contemplates the use in the preparation of gas-curable molds of a binder containing an alkali metal silicate having an alkali metal oxide to silica ratio of from about 1.0:1.5 to 1.03.8, such as an Na O:SiO, ratio of 1.0:1.5 to 1.0:3.8.
  • the practice of the present invention contemplates as a. finely-divided refractory material refractory substances such as sand, e.g., Ottawa sand, finely-divided a l 14nina, zirconia, ground silica, silica flour, ground firebrick, ground magnesia firebrick, fused r n a gnesia, titanium oxide, beryllium oxide, mullite, sillimanite, as well as various mixtures thereof as well as other materials useful as refractory substances.
  • sand e.g., Ottawa sand, finely-divided a l 14nina, zirconia, ground silica, silica flour, ground firebrick, ground magnesia firebrick, fused r n a gnesia, titanium oxide, beryllium oxide, mullite, sillimanite, as well as various mixtures thereof as well as other materials useful as refractory
  • phosphate and finely-divided refractory material can be varied, depending upon the metal being cast, the application intended, temperatures employed, and various other factors related to foundry practice, it generally is desirable to employ a major proportion of the finely-divided refractory material and only a minor proportion of the phosphate, this both on the grounds of economy and because only a minor proportion of the phosphate of this invention provides entirely adequate mold collapsibility.
  • a mold-forming mixture comprising a phosphate in an amount up to about 5% by weight of the refractory material is desirable, generally amounts ranging from 0.5% to 2.5% by weight being preferred at present, 2% by weight being the specifically preferred amount.
  • Optimum results are obtained when at least enough phosphate is added to react with the alkali metal carbonate formed on curing of the mold, e.g., with carbon dioxide, to form a tri-alkali metal phosphate instead of an alkali metal silicate.
  • finely-divided refractory and silicate it is preferable, of course, to employ a major proportion of the refractory material and a minor proportion of the silicate as a binder.
  • a silicate in an amount up to about 15% by weight, smaller amounts within the range from about 3% to 6% by weight being preferred at present, the specifically preferred amount being 5% by weight.
  • the formation of a cured structure in accordance with the present invention comprises subjecting a mixture of a finely-divided, e.g., 60 to l00 mesh, refractory material containing a phosphate and a silicate binder to the action of carbon dioxide, carbon dioxidecontaining gases or other reactive substances capable of converting the mixture into a rigid, high strength material.
  • a finely-divided e.g., 60 to l00 mesh
  • refractory material containing a phosphate and a silicate binder e.g., a finely-divided, e.g., 60 to l00 mesh, refractory material containing a phosphate and a silicate binder
  • carbon dioxide, carbon dioxidecontaining gases or other reactive substances capable of converting the mixture into a rigid, high strength material.
  • Mixtures of these or other gaseous materials such as sulfur dioxide, nitrous oxide, hydrogen chloride, as well as various stack gases or other combustion gases, containing substantial amounts of carbon
  • the refractory material is blended with the hosphate, which pre era y 15 o t e same or er f mummy term binder being intended to refer to the various alkali metal silicates and alkali metal silicate-containing binder compositions.
  • the blending may be done in any suitable manner, as by mulling, or other mixing operation.
  • the thus-prepared mixture is then placed in contact with a mold-defining surface such as a pattern.
  • a mold-defining surface such as a pattern.
  • This can, if desired, be coated with a suitable parting or separating agent.
  • carbon dioxide may be injected into a sandphosphate-sodium silicate binder mixture for a period of a few seconds up to one minute or more, depending on the size of the mold being prepared, the fineness of the sand, the proportions of the reactants and the like. After the gas-curing treatment, the mold is ready for immediate use without aging, heating or other curing treatments or processing.
  • the unfired or green strength is sulficiently high to permit handling of the mold during mold assembly and other foundry operations without injury thereto.
  • the data indexed comparatively in the following examples is obtained by preparing 2" cubes from a mixture of Ottawa 60 grain sand, containing less than .25% water, and a phosphate compound in the indicating percent by weight of said sand, and as a binder a sodium silicate having a ratio of sodium oxide to silicon dioxide within the range from 1:2.2-2.6l which constitutes the especially preferred type of sodium silicate.
  • the mold-forming composition is prepared by adding the phosphate compound to the sand and intimately mixing it therewith and then introducing the silicate to complete the mixture.
  • the resultant cubes are then cured by impregnation with carbon dioxide for seconds at 20 p.s.i.g. at room temperature.
  • the cubes are then sintered at the temperatures indicated for a period of five minutes, and subjected to compression loading using a Tinius Olsen compression testing machine.
  • shell molding art which employs thin-walled dispensable molds and cores generally formed of sand and a suitable binder.
  • shell molding processes generally have utilized a thermosetting resinous binder and have required a heat curing step prior to casting.
  • shell molding operations may be conducted using rigid, thinwalled molds having high gas permeability, good surface smoothness and dimensional stability formed in accordance with this invention by applying a layer of a mixture embodying the invention against a pattern. The thus-formed layer in contact with the pattern can then readily be subjected to the action of carbon dioxide or other gases as described hereinbefore.
  • the method of forming a metal casting mold which comprises placing in contact with a casting-defining surface an intimate mixture of a major proportion of a finely-divided refractory material, a minor amount of a phosphate compound selected from the group consisting of alkali metal phosphates, alkaline earth metal phosphates,
  • ammonium phosphates and triaryl phosphates the amount of said phosphate compound being at least sufficient to provide mold collapsibility after casting and not greater than about 5% by weight of said refractory,
  • silicate is sodium silicate.
  • a composition of matter which consists essentially of a major proportion of a finely-divided refractory material, about 3 to 15% by weight of said material of a sodium silicate binder, and a phosphate selected from the group consisting of alkali metal phosphates, alkaline earth metal phosphates, ammonium phosphates and triaryl phosphates in an amount sufficient to provide mold eo'llapsibility and not in excess of about 5% by weight of said refractory.
  • composition according to claim 6 wherein the phosphate is an alkali metal phosphate.
  • composition according to claim 6 wherein the phosphate is an ammonium phosphate.
  • composition according to claim 6 wherein the phosphate is an alkaline earth metal phosphate.
  • composition according to claim 6 wherein the phosphate is a triaryl phosphate.
  • a metal casting mold comprising a casting-defining structure formed of an intimate mixture of a composition according to claim 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mold Materials And Core Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)
US608000A 1956-09-05 1956-09-05 Metal casting mold material Expired - Lifetime US2895838A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
LU35432D LU35432A1 (enrdf_load_html_response) 1956-09-05
US608000A US2895838A (en) 1956-09-05 1956-09-05 Metal casting mold material
GB27806/57A GB870805A (en) 1956-09-05 1957-09-03 Improvements in or relating to alkali metal silicate-containing mould-forming compositions
FR1187827D FR1187827A (fr) 1956-09-05 1957-09-04 Moules et compositions destinées à leur fabrication
BE560558D BE560558A (fr) 1956-09-05 1957-09-05 Système de réglage des températures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US608000A US2895838A (en) 1956-09-05 1956-09-05 Metal casting mold material

Publications (1)

Publication Number Publication Date
US2895838A true US2895838A (en) 1959-07-21

Family

ID=24434616

Family Applications (1)

Application Number Title Priority Date Filing Date
US608000A Expired - Lifetime US2895838A (en) 1956-09-05 1956-09-05 Metal casting mold material

Country Status (5)

Country Link
US (1) US2895838A (enrdf_load_html_response)
BE (1) BE560558A (enrdf_load_html_response)
FR (1) FR1187827A (enrdf_load_html_response)
GB (1) GB870805A (enrdf_load_html_response)
LU (1) LU35432A1 (enrdf_load_html_response)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992930A (en) * 1959-06-23 1961-07-18 Martin Co Low density refractory oxide
US3104230A (en) * 1959-04-13 1963-09-17 Dow Chemical Co Foundry sand compositions containing polyelectrolytes and salts of the oxy acids of phosphorus and sulfur
US3111006A (en) * 1959-06-19 1963-11-19 Soletanche Novel method for injecting clay-containing grout into ground and products serving for the execution of said method
US3137046A (en) * 1960-10-24 1964-06-16 Int Minerals & Chem Corp Foundry sand composition and method of preparation
US3139657A (en) * 1960-01-11 1964-07-07 Union Oil Co Curing epoxide resin compositions
US3175931A (en) * 1963-11-26 1965-03-30 Carl A Burgess Treatment of aluminum surfaces
US3206810A (en) * 1963-07-22 1965-09-21 Cons Foundries & Mfg Corp Monolithic investment shell casting
US3454410A (en) * 1965-05-03 1969-07-08 Nasa Alkali-metal silicate protective coating
US3473599A (en) * 1965-01-19 1969-10-21 Doulton & Co Ltd Production of metal castings
DE1508689B1 (de) * 1965-10-22 1970-03-05 Mitsubishi Heavy Ind Ltd Binderhaltiger Formsand
US3885978A (en) * 1968-05-31 1975-05-27 Matsushita Electric Works Ltd Inorganic coating composition
US4196011A (en) * 1976-07-28 1980-04-01 Hitachi, Ltd. Self-hardening water-soluble mold and process for producing the same
US4226277A (en) * 1978-06-29 1980-10-07 Ralph Matalon Novel method of making foundry molds and adhesively bonded composites
US4347890A (en) * 1981-03-09 1982-09-07 Pq Corporation Method for binding particulate materials
US4396725A (en) * 1983-01-25 1983-08-02 International Minerals & Chemical Corp. Process for preparing olivine sand cores and molds
US4396431A (en) * 1982-01-25 1983-08-02 International Minerals & Chemical Corporation Process for preparing olivine sand cores and molds
US4422496A (en) * 1982-01-25 1983-12-27 International Minerals & Chemical Corp. Process for preparing olivine sand cores and molds
US4423764A (en) 1982-01-25 1984-01-03 International Minerals & Chemical Corp. Binder for preparing improved cores and molds
US6139619A (en) * 1996-02-29 2000-10-31 Borden Chemical, Inc. Binders for cores and molds
US6299677B1 (en) * 1996-06-25 2001-10-09 Borden Chemical, Inc. Binders for cores and molds
WO2008046653A1 (de) * 2006-10-19 2008-04-24 Ashland-Südchemie-Kernfest GmbH Phosphorhaltige formstoffmischung zur herstellung von giessformen für die metallverarbeitung
US20100224756A1 (en) * 2006-10-19 2010-09-09 Ashland-Sudchemie-Kernfest Gmbh Moulding material mixture containing carbohydrates
EP2329900A3 (de) * 2007-02-19 2012-12-12 ASK Chemicals GmbH Thermische Regenerierung von Giessereisand
WO2014059969A2 (de) 2012-10-19 2014-04-24 Ask Chemicals Gmbh Formstoffmischungen auf der basis anorganischer bindemittel und verfahren zur herstellung von formen und kerne für den metallguss
DE102012020510A1 (de) 2012-10-19 2014-04-24 Ask Chemicals Gmbh Formstoffmischungen auf der Basis anorganischer Bindemittel und Verfahren zur Herstellung von Formen und Kerne für den Metallguss
WO2014059967A2 (de) 2012-10-19 2014-04-24 Ask Chemicals Gmbh Formstoffmischungen auf der basis anorganischer bindemittel und verfahren zur herstellung von formen und kerne für den metallguss
WO2020201721A1 (en) * 2019-03-29 2020-10-08 Goodwin Plc Investment powder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507804A (enrdf_load_html_response) * 1973-05-23 1975-01-27

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751482A (en) * 1927-06-20 1930-03-25 Emil L Leasman Core and process of forming the same
US2466138A (en) * 1944-09-20 1949-04-05 Nat Lead Co Refractory mold composition
US2479504A (en) * 1943-07-12 1949-08-16 Ransom & Randolph Company Investment material
US2531496A (en) * 1949-11-04 1950-11-28 Antioch College Methods of forming a plaster mold or core for casting metals
GB710099A (en) * 1951-04-11 1954-06-09 Harborough Construction Compan Improvements in or relating to the production of moulds, cores and the like
US2680890A (en) * 1950-03-02 1954-06-15 Ransom And Randolph Company Refractory investment and mold
US2681860A (en) * 1951-01-09 1954-06-22 Int Nickel Co Mold and mold composition
US2749586A (en) * 1952-08-14 1956-06-12 Mercast Corp Process of forming shell mold

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751482A (en) * 1927-06-20 1930-03-25 Emil L Leasman Core and process of forming the same
US2479504A (en) * 1943-07-12 1949-08-16 Ransom & Randolph Company Investment material
US2466138A (en) * 1944-09-20 1949-04-05 Nat Lead Co Refractory mold composition
US2531496A (en) * 1949-11-04 1950-11-28 Antioch College Methods of forming a plaster mold or core for casting metals
US2680890A (en) * 1950-03-02 1954-06-15 Ransom And Randolph Company Refractory investment and mold
US2681860A (en) * 1951-01-09 1954-06-22 Int Nickel Co Mold and mold composition
GB710099A (en) * 1951-04-11 1954-06-09 Harborough Construction Compan Improvements in or relating to the production of moulds, cores and the like
US2749586A (en) * 1952-08-14 1956-06-12 Mercast Corp Process of forming shell mold

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104230A (en) * 1959-04-13 1963-09-17 Dow Chemical Co Foundry sand compositions containing polyelectrolytes and salts of the oxy acids of phosphorus and sulfur
US3111006A (en) * 1959-06-19 1963-11-19 Soletanche Novel method for injecting clay-containing grout into ground and products serving for the execution of said method
US2992930A (en) * 1959-06-23 1961-07-18 Martin Co Low density refractory oxide
US3139657A (en) * 1960-01-11 1964-07-07 Union Oil Co Curing epoxide resin compositions
US3137046A (en) * 1960-10-24 1964-06-16 Int Minerals & Chem Corp Foundry sand composition and method of preparation
US3206810A (en) * 1963-07-22 1965-09-21 Cons Foundries & Mfg Corp Monolithic investment shell casting
US3175931A (en) * 1963-11-26 1965-03-30 Carl A Burgess Treatment of aluminum surfaces
US3473599A (en) * 1965-01-19 1969-10-21 Doulton & Co Ltd Production of metal castings
US3454410A (en) * 1965-05-03 1969-07-08 Nasa Alkali-metal silicate protective coating
DE1508689B1 (de) * 1965-10-22 1970-03-05 Mitsubishi Heavy Ind Ltd Binderhaltiger Formsand
US3885978A (en) * 1968-05-31 1975-05-27 Matsushita Electric Works Ltd Inorganic coating composition
US4196011A (en) * 1976-07-28 1980-04-01 Hitachi, Ltd. Self-hardening water-soluble mold and process for producing the same
US4226277A (en) * 1978-06-29 1980-10-07 Ralph Matalon Novel method of making foundry molds and adhesively bonded composites
US4347890A (en) * 1981-03-09 1982-09-07 Pq Corporation Method for binding particulate materials
US4396431A (en) * 1982-01-25 1983-08-02 International Minerals & Chemical Corporation Process for preparing olivine sand cores and molds
US4422496A (en) * 1982-01-25 1983-12-27 International Minerals & Chemical Corp. Process for preparing olivine sand cores and molds
US4423764A (en) 1982-01-25 1984-01-03 International Minerals & Chemical Corp. Binder for preparing improved cores and molds
US4396725A (en) * 1983-01-25 1983-08-02 International Minerals & Chemical Corp. Process for preparing olivine sand cores and molds
US6139619A (en) * 1996-02-29 2000-10-31 Borden Chemical, Inc. Binders for cores and molds
EP0907619A4 (en) * 1996-06-25 2003-06-04 Borden Chem Inc BINDERS FOR CORES AND MOLDS
US6299677B1 (en) * 1996-06-25 2001-10-09 Borden Chemical, Inc. Binders for cores and molds
CN104923715A (zh) * 2006-10-19 2015-09-23 爱斯科化学有限公司 用于制备金属加工用铸型的含磷的模制料混合物
WO2008046653A1 (de) * 2006-10-19 2008-04-24 Ashland-Südchemie-Kernfest GmbH Phosphorhaltige formstoffmischung zur herstellung von giessformen für die metallverarbeitung
US20100224756A1 (en) * 2006-10-19 2010-09-09 Ashland-Sudchemie-Kernfest Gmbh Moulding material mixture containing carbohydrates
US20100294454A1 (en) * 2006-10-19 2010-11-25 Ashland-Sudchemie-Kernfest Gmbh Moulding material mixture containing phosphorus for producing casting moulds for machining metal
EA015778B1 (ru) * 2006-10-19 2011-12-30 Ашланд-Зюдхеми-Кернфест Гмбх Фосфорсодержащая формовочная смесь для получения литейной формы для металлообработки
CN104923715B (zh) * 2006-10-19 2021-07-13 Ask 化学品股份有限公司 用于制备金属加工用铸型的含磷的模制料混合物
US10722938B2 (en) * 2006-10-19 2020-07-28 Ask Chemicals Gmbh Process for casting nonferrous metals including light metals and casting mold
US20180056374A1 (en) * 2006-10-19 2018-03-01 Ask Chemicals Gmbh Process for casting nonferrous metals including light metals and casting mold
EP2097192B1 (de) 2006-10-19 2016-08-17 ASK Chemicals GmbH Phosphorhaltige formstoffmischung zur herstellung von giessformen für die metallverarbeitung
EP2329900A3 (de) * 2007-02-19 2012-12-12 ASK Chemicals GmbH Thermische Regenerierung von Giessereisand
US9737927B2 (en) 2007-02-19 2017-08-22 Ask Chemicals Gmbh Thermal regeneration of foundry sand
DE102012020509A1 (de) 2012-10-19 2014-06-12 Ask Chemicals Gmbh Formstoffmischungen auf der Basis anorganischer Bindemittel und Verfahren zur Herstellung von Formen und Kerne für den Metallguss
DE102012020511A1 (de) 2012-10-19 2014-04-24 Ask Chemicals Gmbh Formstoffmischungen auf der Basis anorganischer Bindemittel und Verfahren zur Herstellung von Formen und Kerne für den Metallguss
WO2014059967A2 (de) 2012-10-19 2014-04-24 Ask Chemicals Gmbh Formstoffmischungen auf der basis anorganischer bindemittel und verfahren zur herstellung von formen und kerne für den metallguss
WO2014059968A2 (de) 2012-10-19 2014-04-24 Ask Chemicals Gmbh Formstoffmischungen auf der basis anorganischer bindemittel und verfahren zur herstellung von formen und kerne für den metallguss
US10092946B2 (en) 2012-10-19 2018-10-09 Ask Chemicals Gmbh Mold material mixtures on the basis of inorganic binders, and method for producing molds and cores for metal casting
DE102012020510B4 (de) 2012-10-19 2019-02-14 Ask Chemicals Gmbh Formstoffmischungen auf der Basis anorganischer Bindemittel und Verfahren zur Herstellung von Formen und Kerne für den Metallguss
DE102012020510A1 (de) 2012-10-19 2014-04-24 Ask Chemicals Gmbh Formstoffmischungen auf der Basis anorganischer Bindemittel und Verfahren zur Herstellung von Formen und Kerne für den Metallguss
WO2014059969A2 (de) 2012-10-19 2014-04-24 Ask Chemicals Gmbh Formstoffmischungen auf der basis anorganischer bindemittel und verfahren zur herstellung von formen und kerne für den metallguss
EP3950168A1 (de) 2012-10-19 2022-02-09 ASK Chemicals GmbH Formstoffmischungen auf der basis anorganischer bindemittel zur herstellung von formen und kernen für den metallguss
WO2020201721A1 (en) * 2019-03-29 2020-10-08 Goodwin Plc Investment powder

Also Published As

Publication number Publication date
GB870805A (en) 1961-06-21
LU35432A1 (enrdf_load_html_response)
FR1187827A (fr) 1959-09-16
BE560558A (fr) 1957-09-30

Similar Documents

Publication Publication Date Title
US2895838A (en) Metal casting mold material
US4357165A (en) Aluminosilicate hydrogel bonded granular compositions and method of preparing same
US6139619A (en) Binders for cores and molds
EP0016789B1 (en) Novel method of making foundry molds and adhesively bonded composites
US6299677B1 (en) Binders for cores and molds
US4127157A (en) Aluminum phosphate binder composition cured with ammonia and amines
US2926098A (en) Binder for foundry molds
US4347890A (en) Method for binding particulate materials
US6015846A (en) Method of improving the properties of reclaimed sand used for the production of foundry moulds and cores
US4505750A (en) Foundry mold and core sands
EP0005371B1 (en) Process for preparing olivine foundry sand and mould compositions containing olivine foundry sand
US2952553A (en) Method for forming a metal casting mold
US2905563A (en) Alkali metal silicate binder for foundry sand molds and process
US4209056A (en) Aluminum phosphate binder composition cured with ammonia and amines
US3832191A (en) Silicate bonded foundry mold and core sands
US3108340A (en) Preparation of foundry cores
US3059296A (en) Ceramic body
US4423764A (en) Binder for preparing improved cores and molds
GB1565740A (en) Inorgraic foam and preparation thereof
US6949136B2 (en) High temperature investment material and method for making solid investment molds
US2887392A (en) Metal containing patterns and method of producing same
US3874885A (en) Method of making foundry moulds and cores
US4390370A (en) Metal silico-phosphate binders and foundry shapes produced therefrom
US4383861A (en) Metal silico-phosphate binders and foundry shapes produced therefrom
US4445565A (en) Process for preparing cores and molds