GB1243762A - Improvements relating to foundry moulds - Google Patents

Improvements relating to foundry moulds

Info

Publication number
GB1243762A
GB1243762A GB1191870A GB1191870A GB1243762A GB 1243762 A GB1243762 A GB 1243762A GB 1191870 A GB1191870 A GB 1191870A GB 1191870 A GB1191870 A GB 1191870A GB 1243762 A GB1243762 A GB 1243762A
Authority
GB
United Kingdom
Prior art keywords
forsterite
silicic acid
magnesium carbonate
mgo
march
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
Application number
GB1191870A
Inventor
Hans Schneider
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.)
Sulzer AG
Original Assignee
Sulzer AG
Gebrueder Sulzer AG
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
Application filed by Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of GB1243762A publication Critical patent/GB1243762A/en
Expired 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
    • B22C1/18—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

1,243,762. Making foundry moulds. SULZER BROS. Ltd. 12 March, 1970 [13 March, 1969], No. 11918/70. Heading B5A. [Also in Divisions B3 and C3] A foundry mould having a plurality of layers is made with at least the layer bounding the casting cavity formed of a mixture including particulate magnesium carbonate and colloidal hydrolysed silicic acid and the mould is then fired forming magnesium oxide and forsterite (2 MgO.SiO 2 ) from the magnesium carbonate and hydrolysed silicic acid. The ratio of magnesium carbonate to silicic acid (measured as SiO 2 ) is preferably 10 : 1 by weight. Silicon carbide may be coated on the invested layers after dipping and chemically stable fillers, e.g. zirconium oxide or periclase (MgO) may be incorporated in the investment mixture, preferably so that the forsterite containing layer comprises 30-40% forsterite.
GB1191870A 1969-03-13 1970-03-12 Improvements relating to foundry moulds Expired GB1243762A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH377669A CH504253A (en) 1969-03-13 1969-03-13 Process for the production of a metallurgically inert casting mold

Publications (1)

Publication Number Publication Date
GB1243762A true GB1243762A (en) 1971-08-25

Family

ID=4263230

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1191870A Expired GB1243762A (en) 1969-03-13 1970-03-12 Improvements relating to foundry moulds

Country Status (6)

Country Link
CH (1) CH504253A (en)
DE (1) DE1914989B1 (en)
FR (1) FR2034872A1 (en)
GB (1) GB1243762A (en)
NL (1) NL142100B (en)
SE (1) SE355735B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3045838C2 (en) * 1980-12-05 1983-01-05 Fried. Krupp Gmbh, 4300 Essen Process for the production of metallic semi-finished products

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB594671A (en) * 1945-01-05 1947-11-17 Richard Mercer Improvements in or relating to refractory molds
GB570719A (en) * 1944-01-14 1945-07-19 Victor Moritz Goldschmidt Improvements in or relating to moulds for casting metals
NL157622B (en) * 1950-11-28 Shell Int Research PROCEDURE FOR HARDENING EPOXY RESIN COMPOSITIONS.
US2812265A (en) * 1953-12-14 1957-11-05 Austenal Inc Refractory mold material
FR1408024A (en) * 1963-11-15 1965-08-06 Sulzer Ag Manufacturing process of a foundry mold resistant to metallurgical reactions
NL289231A (en) * 1963-11-21

Also Published As

Publication number Publication date
FR2034872A1 (en) 1970-12-18
SE355735B (en) 1973-05-07
NL6905550A (en) 1970-09-15
NL142100B (en) 1974-05-15
CH504253A (en) 1971-03-15
DE1914989B1 (en) 1971-01-14

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