GB800143A - Foundry moulds and cores - Google Patents

Foundry moulds and cores

Info

Publication number
GB800143A
GB800143A GB2635955A GB2635955A GB800143A GB 800143 A GB800143 A GB 800143A GB 2635955 A GB2635955 A GB 2635955A GB 2635955 A GB2635955 A GB 2635955A GB 800143 A GB800143 A GB 800143A
Authority
GB
United Kingdom
Prior art keywords
solvent
solution
burning
per cent
refractory
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
GB2635955A
Inventor
Jack Aston
Basil James Shaul
Albert Drayton Cooper
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB2635955A priority Critical patent/GB800143A/en
Publication of GB800143A publication Critical patent/GB800143A/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

Landscapes

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

Abstract

800,143. Moulding-processes. ROLLSROYCE, Ltd. Sept. 14, 1956 [Sept. 14, 1955], No. 26359/55. Class 83(1). Moulds or cores are made by forming from a refractory, e.g. zircon, which is moistened with an aqueous solution of sodium or potassium silicate, hardening by the action of CO 2 , applying to the hardened-mould or core acidhydrolysed ethyl silicate dissolved in an inflammable solvent whereby the solution is absorbed in the structure, and burning-off the solvent. The solvent may be ethyl alcohol, acetone, or iso-propyl alcohol, and there may be repeated applications of the hydrolysed ethyl silicate solution with subsequent burning- off of the solvent, followed by firing of the mould and thereafter further application of the solution and burning-off of the solvent. The silicate solution for damping the refractory may contain ammonia, up to 3 per cent by weight, to accelerate hardening, and alternatively, or in addition thereto may also include glycerol, up to 5 per cent, and sugars such as glucose and molasses, up to 10 per cent, or resins (soluble or miscible in the silicate solution), 1+3 per cent. The invention may be applied to the lost-wax-process, the pattern being given an initial coating of fine refractory, and dusted with a coarse refractory before investment. The burning-off of the solvent then serves to remove the wax &c. pattern, final traces being removed by firing at 700-1000‹ C. Specification 770,527 is referred to.
GB2635955A 1955-09-14 1955-09-14 Foundry moulds and cores Expired GB800143A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2635955A GB800143A (en) 1955-09-14 1955-09-14 Foundry moulds and cores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2635955A GB800143A (en) 1955-09-14 1955-09-14 Foundry moulds and cores

Publications (1)

Publication Number Publication Date
GB800143A true GB800143A (en) 1958-08-20

Family

ID=10242429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2635955A Expired GB800143A (en) 1955-09-14 1955-09-14 Foundry moulds and cores

Country Status (1)

Country Link
GB (1) GB800143A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021134025A1 (en) * 2019-12-24 2021-07-01 Rutgers, The State University Of New Jersey Casting elements and methods of making the same using low temperature solidification

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021134025A1 (en) * 2019-12-24 2021-07-01 Rutgers, The State University Of New Jersey Casting elements and methods of making the same using low temperature solidification

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