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GB1207101A - Shell moulds - Google Patents

Shell moulds

Info

Publication number
GB1207101A
GB1207101A GB376069A GB376069A GB1207101A GB 1207101 A GB1207101 A GB 1207101A GB 376069 A GB376069 A GB 376069A GB 376069 A GB376069 A GB 376069A GB 1207101 A GB1207101 A GB 1207101A
Authority
GB
United Kingdom
Prior art keywords
silicate
slurry
gelling agent
phosphorus
zircon
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
GB376069A
Inventor
Adam Dunlop
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB376069A priority Critical patent/GB1207101A/en
Publication of GB1207101A publication Critical patent/GB1207101A/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
    • B22C1/185—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
    • B22C1/165—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 in the manufacture of multilayered shell moulds
    • 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)
  • Detergent Compositions (AREA)

Abstract

1,207,101. Shell moulds. A. DUNLOP. 23 Jan., 1969, No. 3760/69. Addition to 1,205,967. Heading B5A. Shell moulds are manufactured by applying to a pattern a slurry containing sodium silicate or potassium silicate, coating with refractory, applying a liquid gelling agent for the slurry, the gelling agent including a phosphorus-containing compound, and allowing the silicate to gel. The phosphorus-containing compound is preferably phosphorus pentoxide which may be dispersed in an organic carrier, e.g. ethyl alcohol. The gelling agent may also include a hydrolysed alkyl silicate. The refractory may be applied from a fluidized bed and may be, for example, calcined alumina, fused silica, zircon, molochite, or quartz sand. The slurry may comprise potassium or sodium silicate in water, e.g. with a viscosity-increasing material, e.g. zircon or molochite flour and defoaming agents, e.g. octyl alcohol, silicones and wetting agents, e.g. detergents, dioctyl sulfosuccinate, The pattern, which may be a core box, may be initially coated with a slurry comprising a hydrolysed alkyl silicate. Gelling may be effected in warm air or in vacuo.
GB376069A 1969-01-23 1969-01-23 Shell moulds Expired GB1207101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB376069A GB1207101A (en) 1969-01-23 1969-01-23 Shell moulds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB376069A GB1207101A (en) 1969-01-23 1969-01-23 Shell moulds

Publications (1)

Publication Number Publication Date
GB1207101A true GB1207101A (en) 1970-09-30

Family

ID=9764449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB376069A Expired GB1207101A (en) 1969-01-23 1969-01-23 Shell moulds

Country Status (1)

Country Link
GB (1) GB1207101A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010080583A1 (en) * 2008-12-18 2010-07-15 Tenedora Nemak, S.A. De C.V. Method and composition of binder for manufacturing sand molds and/or cores for foundries

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010080583A1 (en) * 2008-12-18 2010-07-15 Tenedora Nemak, S.A. De C.V. Method and composition of binder for manufacturing sand molds and/or cores for foundries
US8567481B2 (en) 2008-12-18 2013-10-29 Tenedora Nemak, S.A. De C.V. Method and composition of binder for manufacturing sand molds and/or cores for foundries

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees