ES297855A1 - A procedure for making refractory molds for precision foundry (Machine-translation by Google Translate, not legally binding) - Google Patents

A procedure for making refractory molds for precision foundry (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES297855A1
ES297855A1 ES0297855A ES297855A ES297855A1 ES 297855 A1 ES297855 A1 ES 297855A1 ES 0297855 A ES0297855 A ES 0297855A ES 297855 A ES297855 A ES 297855A ES 297855 A1 ES297855 A1 ES 297855A1
Authority
ES
Spain
Prior art keywords
coating
layer
refractory material
sprinkled
grain size
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
ES0297855A
Other languages
Spanish (es)
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.)
Societe des Forges et Ateliers du Creusot
Original Assignee
Societe des Forges et Ateliers du Creusot
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 Societe des Forges et Ateliers du Creusot filed Critical Societe des Forges et Ateliers du Creusot
Publication of ES297855A1 publication Critical patent/ES297855A1/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
    • B22C1/165—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
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

A method of making a refractory shell mould comprises coating an expendable pattern with a contact layer, coating the contact layer with a first slurry of a refractory material to form a primary layer on the contact layer, and then coating the primary layer with one or more successive slurries of refractory material to form one or more outer layers. The grain size of the refractory material used in the slurry forming the primary layer is intermediate the grain size for the material for forming the contact and outer layers. Each of the layers is sprinkled before it is completely dry with a dry powdered fireclay containing approximately 40% by weight of alumina, the grain size of the fireclay progressively increasing from that sprinkled on the primary layer to that sprinkled on the outer layer. The slurry for coating the pattern comprises a mixture of powdered silica and aluminium silicate, a colloidal silica salt, a foam depressant and a sedimentation inhibitor. The coated pattern is invested, in an enclosure, with a pourable refractory material and the resultant assembly is dried. An example of the composition of the slurries is given.
ES0297855A 1963-03-26 1964-03-21 A procedure for making refractory molds for precision foundry (Machine-translation by Google Translate, not legally binding) Expired ES297855A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR929214A FR1369354A (en) 1963-03-26 1963-03-26 Process for making refractory molds

Publications (1)

Publication Number Publication Date
ES297855A1 true ES297855A1 (en) 1964-08-16

Family

ID=8800073

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0297855A Expired ES297855A1 (en) 1963-03-26 1964-03-21 A procedure for making refractory molds for precision foundry (Machine-translation by Google Translate, not legally binding)

Country Status (4)

Country Link
ES (1) ES297855A1 (en)
FR (1) FR1369354A (en)
GB (1) GB1051689A (en)
OA (1) OA00289A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA895432A (en) * 1967-08-25 1972-03-14 Uniroyal Ltd. - Uniroyal Ltee. Method of spray forming destructible forms
FR2622131B1 (en) * 1987-10-21 1991-04-19 Renault LIQUID FOUNDRY POTTING, ESPECIALLY FOR CONTINUOUS CENTRIFUGAL CASTING

Also Published As

Publication number Publication date
OA00289A (en) 1966-05-15
FR1369354A (en) 1964-08-14
GB1051689A (en) 1900-01-01

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