GB802134A - Improvements in moulds and methods of producing same - Google Patents
Improvements in moulds and methods of producing sameInfo
- Publication number
- GB802134A GB802134A GB34027/53A GB3402753A GB802134A GB 802134 A GB802134 A GB 802134A GB 34027/53 A GB34027/53 A GB 34027/53A GB 3402753 A GB3402753 A GB 3402753A GB 802134 A GB802134 A GB 802134A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- parting plate
- pattern
- plate
- parts
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
802,134. Making moulds. BRIGHT, T. J. R. Nov. 30, 1954 [Dec. 7, 1953], No. 34027/53. Class 87(2). [Also in Group XXII] A reusable multiple part ceramic or other non-metallic high temperature resisting mould, the parts incorporating means for ensuring accurate relative location but being capable of separation for the removal of a finished casting, is made by the lost-wax process, the pattern, of e.g. wax, low melting point alloy such as 58 per cent bismuth, 48 per cent tin, including two or more parts permanently secured to or forming an integral part of an intervening parting plate which serves to separate the mould parts during their formation, the parting plate having on its opposite faces locating means for producing identical registering recesses and projections in and on the mould parts which interengage when the mould parts are separated from the parting plate and assembled together to ensure accurate relative location of the mould parts during use. The fusible pattern for a hollow rectangular section tube is cast in a die, Figs. 1, 2 comprising side walls 14, 15, inner surface defining portions 21, 22 and a parting plate 12. The side walls 14, 15 are connected by a two piece cap plate 18 having semi-circular pouring holes 19 and base blocks 13. Dowels 24, 28 and plugs 26 also serve to locate and fasten the assembly. The parting plate 12 has a series of cavities 27 which connect the die cavities on both sides of the plate so that when the pattern material is poured the holes 27 are filled therewith and connect the pattern portion on one side of the plate to that on the other. After pouring and solidification, the die is disassembled leaving the pattern 31 and parting plate 12 on the base blocks 13, Fig. 4. Cavities 25 in the parting plate are provided with plugs 33, Fig. 10, which have been accurately fitted to the corresponding cavity by grinding-in to form corresponding projections and recesses in the mould parts. The assembly is then repeatedly dipped in a slurry, initially a fine slurry and then a coarse slurry, until a thickness of preferably 1/16-1/8 inch is built up, the ends of the parting plate and the base blocks being wiped clean after each dipping. After setting the pattern is melted out, the parting plate removed and the mould parts re-assembled. The mould parts may be fired before or after removal of the parting plate. A two part ceramic top 60, Fig. 7, with pouring orifices 19 is provided, and located by ribs 61 which engage in the top of the mould cavity, the mould after firing having been machined to an accurately defined length. Instead of using the ceramic base blocks 13 to act as the mould base, a mould bottom similar to the top 60 may be used, metal base blocks 13 then being used. In a modification, Fig. 14, the mould is shaped externally so that it may be supported in presses or other automatic machinery, and the pattern therefore is made in a die, Fig. 11, comprising three parts on each side of the parting plate. The cavities 54 and apertures 55 improve the mould cooling. The Provisional Specification refers also to the use of additional cooling means such as compressed air or other gas or suitable liquid and to the use of synthetic resin as a pattern material.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB332572X | 1953-12-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB802134A true GB802134A (en) | 1958-10-01 |
Family
ID=10350572
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34027/53A Expired GB802134A (en) | 1953-12-07 | 1953-12-07 | Improvements in moulds and methods of producing same |
Country Status (7)
Country | Link |
---|---|
US (1) | US2887745A (en) |
BE (1) | BE533857A (en) |
CH (1) | CH332572A (en) |
DE (1) | DE1204364B (en) |
FR (1) | FR1116855A (en) |
GB (1) | GB802134A (en) |
LU (1) | LU33249A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2262580B1 (en) * | 1974-03-01 | 1976-12-10 | Lorraine Carbone | |
US4092395A (en) * | 1974-03-01 | 1978-05-30 | Le Carbone-Lorraine | Method of making fluid treatment modules |
CN113695520B (en) * | 2021-08-28 | 2022-07-26 | 宁波开发区安德鲁精铸有限公司 | Production process of outlet pump body |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US703169A (en) * | 1902-01-21 | 1902-06-24 | Frederick Baldt Sr | Molding process. |
US1369683A (en) * | 1920-06-03 | 1921-02-22 | Bassick Co | Pattern-plate |
US1912889A (en) * | 1931-03-17 | 1933-06-06 | Kibbey W Couse | Method of producing metallic dies |
US2160645A (en) * | 1937-07-02 | 1939-05-30 | Bethlehem Steel Corp | Foundry mold and the like |
US2206034A (en) * | 1938-06-14 | 1940-07-02 | Castings Patent Corp | Mold form |
DE945717C (en) * | 1943-11-14 | 1956-07-12 | Siemens Ag | Process for the production of casting molds for metal casting, iron casting or the like. |
US2460213A (en) * | 1945-07-28 | 1949-01-25 | Harold O Capps | Pattern board |
US2448827A (en) * | 1946-05-20 | 1948-09-07 | Jr Emil Edward Reder | Sectional match plate |
US2515017A (en) * | 1947-11-29 | 1950-07-11 | Nicholson Celtic | Process of making wax negative molds |
DE832934C (en) * | 1949-07-02 | 1952-03-03 | Johannes Croning | Process for the production of foundry molds and foundry cores |
US2632216A (en) * | 1949-08-04 | 1953-03-24 | Harry W Mcquaid | Apparatus for making slab or billettype ingots |
US2652609A (en) * | 1950-01-17 | 1953-09-22 | Westinghouse Electric Corp | Method of making molds |
US2682692A (en) * | 1950-10-25 | 1954-07-06 | Everard F Kohl | Process of preparing precision castings |
-
0
- BE BE533857D patent/BE533857A/xx unknown
- LU LU33249D patent/LU33249A1/xx unknown
-
1953
- 1953-12-07 GB GB34027/53A patent/GB802134A/en not_active Expired
-
1954
- 1954-12-06 US US473354A patent/US2887745A/en not_active Expired - Lifetime
- 1954-12-06 CH CH332572D patent/CH332572A/en unknown
- 1954-12-06 FR FR1116855D patent/FR1116855A/en not_active Expired
- 1954-12-07 DE DEB33669A patent/DE1204364B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR1116855A (en) | 1956-05-14 |
DE1204364B (en) | 1965-11-04 |
BE533857A (en) | |
LU33249A1 (en) | |
CH332572A (en) | 1958-09-15 |
US2887745A (en) | 1959-05-26 |
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