GB777065A - Shell moulds and moulding cores - Google Patents

Shell moulds and moulding cores

Info

Publication number
GB777065A
GB777065A GB32012/54A GB3201254A GB777065A GB 777065 A GB777065 A GB 777065A GB 32012/54 A GB32012/54 A GB 32012/54A GB 3201254 A GB3201254 A GB 3201254A GB 777065 A GB777065 A GB 777065A
Authority
GB
United Kingdom
Prior art keywords
oxygen
resin
moulds
resins
carbon
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
GB32012/54A
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.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel 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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of GB777065A publication Critical patent/GB777065A/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
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
    • 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
    • B22C1/20—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 organic agents
    • B22C1/22—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 organic agents of resins or rosins
    • B22C1/2233—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 organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • B22C1/2246—Condensation polymers of aldehydes and ketones
    • B22C1/2253—Condensation polymers of aldehydes and ketones with phenols

Landscapes

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

Abstract

Shell moulds and cores particularly for nonferrous metals comprise a major proportion of fine grained quartz sand, a minor proportion of a hardenable, more particularly thermo-setting, phenolic resin and at least 0.5 per cent by weight of resin, of at least one oxygen-yielding substance. Oxygen yielding substances include compounds such as Pb3O4, KNO3, KClO4 and benzoyl peroxide which split off oxygen on heating, and compounds such as Fe2O3 and Mn3O4 which react with the carbon of the carbonaceous resin. The first group are generally known as oxidizing agents such as inorganic and organic peroxides, chlorates and nitrates. The second are generally substances reduced in the presence of carbon at temperatures above 500 DEG C. The additives may be admixed with the finished pulverous resins, or added to the initial substances employed for the production of the resins. The moulds are more readily carbonized and removed from the casting.
GB32012/54A 1953-11-07 1954-11-04 Shell moulds and moulding cores Expired GB777065A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE777065X 1953-11-07

Publications (1)

Publication Number Publication Date
GB777065A true GB777065A (en) 1957-06-19

Family

ID=6686664

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32012/54A Expired GB777065A (en) 1953-11-07 1954-11-04 Shell moulds and moulding cores

Country Status (1)

Country Link
GB (1) GB777065A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153714A2 (en) * 1984-02-29 1985-09-04 Nissan Motor Co., Ltd. Disintegration assistant for casting molds

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153714A2 (en) * 1984-02-29 1985-09-04 Nissan Motor Co., Ltd. Disintegration assistant for casting molds
EP0153714A3 (en) * 1984-02-29 1986-01-02 Nissan Motor Co., Ltd. Disintegration assistant for casting molds
US4600733A (en) * 1984-02-29 1986-07-15 Nissan Motor Co., Ltd. Disintegration assistant for casting molds

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