GB584407A - Improvements in and relating to casting pattern compositions - Google Patents

Improvements in and relating to casting pattern compositions

Info

Publication number
GB584407A
GB584407A GB20164/44A GB2016444A GB584407A GB 584407 A GB584407 A GB 584407A GB 20164/44 A GB20164/44 A GB 20164/44A GB 2016444 A GB2016444 A GB 2016444A GB 584407 A GB584407 A GB 584407A
Authority
GB
United Kingdom
Prior art keywords
composition
wax
balata
resin
cumar
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
GB20164/44A
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 Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB584407A publication Critical patent/GB584407A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02—Lost patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/52—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles soluble or fusible

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

A composition for use in making patterns for moulds for casting metal consists of a mixture of a waxy material, a rubber-like hydrocarbon, and a resin, so that after formation of the mould the composition can be removed by heating. The composition melts between 70 and 80 DEG C., and does not separate into its constituents on melting. The hydrocarbon may be balata or chicle and is present in an amount not exceeding 25 per cent., and preferably about 10 per cent. of the composition. The waxy ingredients and the resin, e.g., cumar or indene resin, which serves as a fluxing-agent, are melted together, the balata &c., preferably comminuted, is stirred in, and the composition is then forced into the pattern in a vacuum, pressure being then applied to eliminate cavities. It is then used as a pattern for the formation of a mould (see Group XXII). According to examples, the composition may comprise mixtures of (1) a hard wax such as vegetable fibre wax, a softer wax such as candelilla, a hydrogenated vegetable oil such as hydrogenated cotton seed oil, a petroleum wax, balata, and cumar resin; (2) hydrogenated castor oil, hydrogenated cotton seed oil, petroleum wax, cumar, and balata; (3) vegetable fibre wax, candelilla, paraffin wax, and chicle.
GB20164/44A 1943-10-18 1944-10-18 Improvements in and relating to casting pattern compositions Expired GB584407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US584407XA 1943-10-18 1943-10-18

Publications (1)

Publication Number Publication Date
GB584407A true GB584407A (en) 1947-01-14

Family

ID=22016814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20164/44A Expired GB584407A (en) 1943-10-18 1944-10-18 Improvements in and relating to casting pattern compositions

Country Status (1)

Country Link
GB (1) GB584407A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041688A (en) * 1958-08-15 1962-07-03 Sierra Metals Corp Shell mold for investment castings and method of making same
US6349757B1 (en) * 1996-11-06 2002-02-26 American Metal Chemical Corporation Method of sealing using a riser sleeve
CN107130237A (en) * 2016-02-29 2017-09-05 通用电气公司 Utilize the casting of metal parts and metal skin layer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041688A (en) * 1958-08-15 1962-07-03 Sierra Metals Corp Shell mold for investment castings and method of making same
US6349757B1 (en) * 1996-11-06 2002-02-26 American Metal Chemical Corporation Method of sealing using a riser sleeve
US6352100B1 (en) * 1996-11-06 2002-03-05 American Metal Chemical Corporation Sealing riser sleeve
US6640874B2 (en) 1996-11-06 2003-11-04 American Metal Chemical Corporation Sealing riser sleeve
CN107130237A (en) * 2016-02-29 2017-09-05 通用电气公司 Utilize the casting of metal parts and metal skin layer

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