GB1208511A - Improvements in eliminating patterns from and hardening of shell molds - Google Patents

Improvements in eliminating patterns from and hardening of shell molds

Info

Publication number
GB1208511A
GB1208511A GB27040/68A GB2704068A GB1208511A GB 1208511 A GB1208511 A GB 1208511A GB 27040/68 A GB27040/68 A GB 27040/68A GB 2704068 A GB2704068 A GB 2704068A GB 1208511 A GB1208511 A GB 1208511A
Authority
GB
United Kingdom
Prior art keywords
liquid
mould
pattern
refractory
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
GB27040/68A
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.)
Howmet Corp
Original Assignee
Howmet Corp
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 Howmet Corp filed Critical Howmet Corp
Publication of GB1208511A publication Critical patent/GB1208511A/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
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B22C9/043—Removing the consumable pattern

Landscapes

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

Abstract

1,208,511. Refractory shell mould. HOWMET CORP. 6 June, 1968 [8 Aug., 1967], No. 27040/68. Heading B5A. [Also in Division B3] Refractory shell moulds are formed on a fusible pattern and soaked with a flammable liquid, and then by burning the liquid, the pattern melts and flows from the mould, the mould then being fired to the desired hardness without cooling after the burning of the liquid. A pattern of wax, thermoplastic composition &c. may be dip-coated with a slurry comprising a refractory and a silica-containing binder, e.g. hydrolysed ethyl or isopropyl silicate which may be gelled with ammonia or bonded with colloidal silica, and the pattern is then dusted with coarse refractory. After repeating these steps to the desired thickness, the mould is soaked with a flammable liquid by dipping, spraying &c. The liquid may be petrol, hexane, acetone or alcohol, or if a silicate binder is used, the flammable liquid may be siliciferous, e.g. acetone or ethanol-based hydrolysed ethyl silicate or ethanol-based hydrolysed isopropyl silicate. The liquid is then ignited and burning may be continued in an oven, e.g. at 1500‹ F., to remove all wax and carbonized deposits thereof and to strengthen the mould until its full high temperature strength is reached.
GB27040/68A 1967-08-08 1968-06-06 Improvements in eliminating patterns from and hardening of shell molds Expired GB1208511A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65918267A 1967-08-08 1967-08-08

Publications (1)

Publication Number Publication Date
GB1208511A true GB1208511A (en) 1970-10-14

Family

ID=24644383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27040/68A Expired GB1208511A (en) 1967-08-08 1968-06-06 Improvements in eliminating patterns from and hardening of shell molds

Country Status (8)

Country Link
US (1) US3519057A (en)
BE (1) BE717282A (en)
CH (1) CH477930A (en)
ES (1) ES354541A1 (en)
FR (1) FR1602551A (en)
GB (1) GB1208511A (en)
NL (1) NL6809868A (en)
SE (1) SE324038B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1600230A1 (en) * 2004-04-15 2005-11-30 United Technologies Corporation Methods for manufacturing investment casting shells
WO2006125612A1 (en) * 2005-05-25 2006-11-30 Ashland-Südchemie-Kernfest GmbH Method for drying water-based coatings
RU2818260C1 (en) * 2023-11-17 2024-04-26 Публичное акционерное общество "ОДК-Кузнецов" Method for obtaining fire-resistant shell mold using salt models

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847202A (en) * 1973-03-02 1974-11-12 Trw Inc Microwave dewaxing
US5372177A (en) * 1993-05-13 1994-12-13 Foster; Glenn H. Method and apparatus for removing wax from casting mold
CN103418753A (en) * 2012-05-18 2013-12-04 无锡蠡湖叶轮制造有限公司 Energy-saving solidifying pipeline for alcoholic-group coating
US11786961B2 (en) * 2015-10-13 2023-10-17 Metal Casting Technology, Inc. Investment mold slurry curtain apparatus
CN107497995A (en) * 2015-12-29 2017-12-22 丽水市伊凡家模具科技有限公司 A kind of precision castings evaporative pattern wax melting pool structure and its wax melting method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB716394A (en) * 1952-04-03 1954-10-06 Shaw Processes Ltd Improvements in or relating to moulds for metal casting
US2930089A (en) * 1955-12-16 1960-03-29 Rolls Royce Precision casting
GB988454A (en) * 1962-12-19 1965-04-07 Aherne Heron John Method of and apparatus for forming cast objects

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1600230A1 (en) * 2004-04-15 2005-11-30 United Technologies Corporation Methods for manufacturing investment casting shells
WO2006125612A1 (en) * 2005-05-25 2006-11-30 Ashland-Südchemie-Kernfest GmbH Method for drying water-based coatings
RU2818260C1 (en) * 2023-11-17 2024-04-26 Публичное акционерное общество "ОДК-Кузнецов" Method for obtaining fire-resistant shell mold using salt models

Also Published As

Publication number Publication date
CH477930A (en) 1969-09-15
US3519057A (en) 1970-07-07
FR1602551A (en) 1970-12-28
NL6809868A (en) 1969-02-11
BE717282A (en) 1968-12-02
ES354541A1 (en) 1969-11-16
SE324038B (en) 1970-05-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee