GB1156445A - Improvements in or relating to Paints for Foundry Moulds and Cores - Google Patents

Improvements in or relating to Paints for Foundry Moulds and Cores

Info

Publication number
GB1156445A
GB1156445A GB540468A GB540468A GB1156445A GB 1156445 A GB1156445 A GB 1156445A GB 540468 A GB540468 A GB 540468A GB 540468 A GB540468 A GB 540468A GB 1156445 A GB1156445 A GB 1156445A
Authority
GB
United Kingdom
Prior art keywords
sodium
suspending agent
refractory
stoving
bentonite
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
GB540468A
Inventor
James Maurice Middleton
Ronald Geoffrey Barker
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.)
Steel Castings Research and Trade Association
Original Assignee
Steel Castings Research and Trade 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 Steel Castings Research and Trade Association filed Critical Steel Castings Research and Trade Association
Priority to GB540468A priority Critical patent/GB1156445A/en
Publication of GB1156445A publication Critical patent/GB1156445A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns

Landscapes

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

Abstract

1,156,445. Mould-linings and core-coatings. STEEL CASTINGS RESEARCH & TRADE ASSOCIATION. 2 Feb., 1968, No. 5404/68. Heading B3F. [Also in Division C3] A paint for foundry moulds and cores, e.g. with sand surfaces, comprises an aqueous suspension of a granular refractory with an organic suspending agent and a complex sodium phosphate. The sodium phosphate forms a glass-like bond with the refractory on stoving and may be, e.g. sodium tripolyphosphate (Na 5 P 3 O 10 ) or sodium metaphosphate (NaPO 3 ) m where m # 6. The refractory may be zircon, silica, magnesia, magnesite, alumina, olivine or chromite. The suspending agent may be high viscosity sodium carboxymethylcellulose or hydroxyethylcellulose. Bentonite may also be present. Exemplified compositions comprise, in wt. per cent: zircon flour 70; sodium carboxymethyl cellulose (2À5% aqueous solution), 10-12; sodium hexametaphosphate, 1; bentonite 0-0À5; water 17-18À5. The stoving temperature may be 250‹ C., and the coating resists shock from molten metal up to 1350- 1650‹ C. A two-coat application is 0À020- 0À025 inch thick. The organic suspending agent decomposes and burns out during stoving and metal pouring.
GB540468A 1968-02-02 1968-02-02 Improvements in or relating to Paints for Foundry Moulds and Cores Expired GB1156445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB540468A GB1156445A (en) 1968-02-02 1968-02-02 Improvements in or relating to Paints for Foundry Moulds and Cores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB540468A GB1156445A (en) 1968-02-02 1968-02-02 Improvements in or relating to Paints for Foundry Moulds and Cores

Publications (1)

Publication Number Publication Date
GB1156445A true GB1156445A (en) 1969-06-25

Family

ID=9795535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB540468A Expired GB1156445A (en) 1968-02-02 1968-02-02 Improvements in or relating to Paints for Foundry Moulds and Cores

Country Status (1)

Country Link
GB (1) GB1156445A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002784A (en) * 1975-11-06 1977-01-11 The United States Of America As Represented By The United States Energy Research And Development Administration Coating method for graphite
RU2450885C1 (en) * 2011-04-12 2012-05-20 Общество с ограниченной ответственностью "РОДОНИТ" Facing material for moulds and cores
CN103008528A (en) * 2012-11-09 2013-04-03 兰州兰石铸造有限责任公司 Simple alcohol-based casting coating and preparation method thereof
EP2774900A1 (en) * 2013-03-05 2014-09-10 Refratechnik Holding GmbH Coating additive for coating fire resistant products containing carbon and/or silicon carbide and use of the offset

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002784A (en) * 1975-11-06 1977-01-11 The United States Of America As Represented By The United States Energy Research And Development Administration Coating method for graphite
RU2450885C1 (en) * 2011-04-12 2012-05-20 Общество с ограниченной ответственностью "РОДОНИТ" Facing material for moulds and cores
CN103008528A (en) * 2012-11-09 2013-04-03 兰州兰石铸造有限责任公司 Simple alcohol-based casting coating and preparation method thereof
EP2774900A1 (en) * 2013-03-05 2014-09-10 Refratechnik Holding GmbH Coating additive for coating fire resistant products containing carbon and/or silicon carbide and use of the offset

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