GB1311735A - Production of foundry moulds and cores - Google Patents

Production of foundry moulds and cores

Info

Publication number
GB1311735A
GB1311735A GB1311735DA GB1311735A GB 1311735 A GB1311735 A GB 1311735A GB 1311735D A GB1311735D A GB 1311735DA GB 1311735 A GB1311735 A GB 1311735A
Authority
GB
United Kingdom
Prior art keywords
binder
mould
volume
filler material
filler
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
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.)
British Cast Iron Research Association
Original Assignee
British Cast Iron Research Association
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 British Cast Iron Research Association filed Critical British Cast Iron Research Association
Publication of GB1311735A publication Critical patent/GB1311735A/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

Landscapes

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

Abstract

1311735 Foundry mould composition BRITISH CAST IRON RESEARCH ASSOCIATION 6 Sept 1971 [23 July 1970] 35647/70 Heading C3N A foundry mould composition comprising a refractory filler material and a binder and further including a surface active agent so as to render the composition capable of being poured into a mould or corebox before being set by the binder is further characterized by at least 20% and not more than 80% by volume of the refractory material comprising particles or bodies too large to pass through a sieve having holes # inch in diameter. Preferably at least 40% by volume and not more than 75% by volume of the filler is as above specified, and the particles are preferably between 1/4 and # inch in size. Suitable refractory materials are broken porcelain insulator material, balls of tabular alumina, quartz gravel, or dolerite roadstone. The binder preferred is sodium silicate but the use of a resin binder is also envisaged. The balance of the filler material may be silica sand. The surface active agent may be an anionic secondary alkyl sulphate. The mould or core material, after casting, may be broken up and after eliminating the fine particles substantially all of the large-particle portion of the filler material may be recovered and be used again.
GB1311735D 1970-07-23 1970-07-23 Production of foundry moulds and cores Expired GB1311735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3564770 1970-07-23

Publications (1)

Publication Number Publication Date
GB1311735A true GB1311735A (en) 1973-03-28

Family

ID=10380047

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1311735D Expired GB1311735A (en) 1970-07-23 1970-07-23 Production of foundry moulds and cores

Country Status (2)

Country Link
BE (1) BE772329A (en)
GB (1) GB1311735A (en)

Also Published As

Publication number Publication date
BE772329A (en) 1972-01-17

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee