GB711940A - Improved cire-perdue precision casting process - Google Patents

Improved cire-perdue precision casting process

Info

Publication number
GB711940A
GB711940A GB17757/52A GB1775752A GB711940A GB 711940 A GB711940 A GB 711940A GB 17757/52 A GB17757/52 A GB 17757/52A GB 1775752 A GB1775752 A GB 1775752A GB 711940 A GB711940 A GB 711940A
Authority
GB
United Kingdom
Prior art keywords
cores
parts
mould
moulding
sodium 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
GB17757/52A
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of GB711940A publication Critical patent/GB711940A/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
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns

Abstract

711,940. Moulding processes mould materials ; making cores. REGIE NATIONALE DES USINES RENAULT. July 14, 1952 [Sept. 3, 1951], No. 17757/52. Class 83 (1) . In a "lost-wax" moulding process in which cores, strainers or other refractory parts are embedded in the wax pattern, such parts are made of incompletely dehydrated ceramic paste so that further shrinkage occurs during the baking of the mould, thereby avoiding breakage of the latter due to differential expansion. A suitable material for the cores is 30 grams kaolin, 70 grams fireclay and 30 ccs. of a binder comprising 20 parts by volume of sodium silicate to 80 parts of water. After moulding to shape, the cores are dried or partially baked at 400-600‹ C. The mould which is to contain them is made from a mixture of sand, sodium silicate, water and a setting agent such as ammonium nitrate and is baked at between 800‹ and 900‹ C. prior to casting.
GB17757/52A 1951-09-03 1952-07-14 Improved cire-perdue precision casting process Expired GB711940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR968080X 1951-09-03

Publications (1)

Publication Number Publication Date
GB711940A true GB711940A (en) 1954-07-14

Family

ID=9501097

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17757/52A Expired GB711940A (en) 1951-09-03 1952-07-14 Improved cire-perdue precision casting process

Country Status (4)

Country Link
BE (1) BE512609A (en)
DE (1) DE968080C (en)
FR (1) FR1041509A (en)
GB (1) GB711940A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968827A (en) * 1975-03-07 1976-07-13 Jury Leibovich Perevozkin Method of preparing ceramic casting moulds for pouring metal therein

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE687594C (en) * 1935-05-26 1940-02-01 Fritz Dueker Method of making molds
NL82906C (en) * 1946-01-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968827A (en) * 1975-03-07 1976-07-13 Jury Leibovich Perevozkin Method of preparing ceramic casting moulds for pouring metal therein

Also Published As

Publication number Publication date
DE968080C (en) 1958-01-16
FR1041509A (en) 1953-10-23
BE512609A (en)

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