GB826340A - Casting metal - Google Patents

Casting metal

Info

Publication number
GB826340A
GB826340A GB12412/58A GB1241258A GB826340A GB 826340 A GB826340 A GB 826340A GB 12412/58 A GB12412/58 A GB 12412/58A GB 1241258 A GB1241258 A GB 1241258A GB 826340 A GB826340 A GB 826340A
Authority
GB
United Kingdom
Prior art keywords
sleeve
coating
casting
april
silicate
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
GB12412/58A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB826340A publication Critical patent/GB826340A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/101—Permanent cores

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

826,340. Cores. DOW CHEMICAL CO. April 18, 1958 [April 24, 1957; Dec. 30, 1957], No. 12412/58. Class 83 (1). A core, which may be used in the casting of magnesium, aluminium and alloys thereof, comprises a sleeve of woven heat-resisting fibres having a coating thereon bonding the fibres together into a rigid form, said coating becoming friable on being heated by the cast metal. The sleeve, which may be of branched form, Fig. 14, is formed on a fusible mandrel, of, e.g., a low melting-point alloy. The sleeve may be of ceramic or silica such as soda-lime or borosilicate-glass or metal, such as stainless steel, copper, or tinned copper, and coated with shellac or a mould wash of clay mixed with sand or other refractory oxide or silicate such as zirconium-silicate. After melting out the mandrel, the sleeve may be further stiffened by filling with a free-flowing particulate material such as shell-moulding mix, which is then set by curing. After casting, the sleeve is removed by pulling, causing it to contract diametrically. The cored hole may then be cleaned of remnants of the coating by a solution of hydrofluoric acid, or by ultrasonic cleaning.
GB12412/58A 1957-04-24 1958-04-18 Casting metal Expired GB826340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US826340XA 1957-04-24 1957-04-24

Publications (1)

Publication Number Publication Date
GB826340A true GB826340A (en) 1960-01-06

Family

ID=22172395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12412/58A Expired GB826340A (en) 1957-04-24 1958-04-18 Casting metal

Country Status (1)

Country Link
GB (1) GB826340A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3142875A (en) * 1961-04-06 1964-08-04 Howe Sound Co Metal casting cores
GB2230720A (en) * 1989-04-29 1990-10-31 Maverex International Limited Removing moulding material particles from a casting
GB2269771A (en) * 1992-07-30 1994-02-23 Masaru Nemoto Method of moulding using a core of non-sand material
US5975189A (en) * 1992-07-30 1999-11-02 Suguru Nemoto Method of fabricating a metallic article using a non-sand core
WO2007025769A1 (en) * 2005-09-02 2007-03-08 Ashland-Südchemie-Kernfest GmbH Borosilicate glass-containing molding material mixtures

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3142875A (en) * 1961-04-06 1964-08-04 Howe Sound Co Metal casting cores
GB2230720A (en) * 1989-04-29 1990-10-31 Maverex International Limited Removing moulding material particles from a casting
GB2269771A (en) * 1992-07-30 1994-02-23 Masaru Nemoto Method of moulding using a core of non-sand material
GB2269771B (en) * 1992-07-30 1996-05-22 Masaru Nemoto Method of moulding articles
US5975189A (en) * 1992-07-30 1999-11-02 Suguru Nemoto Method of fabricating a metallic article using a non-sand core
WO2007025769A1 (en) * 2005-09-02 2007-03-08 Ashland-Südchemie-Kernfest GmbH Borosilicate glass-containing molding material mixtures

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