FR2137174A3 - Foundry sand prepn - to improve the stripping of castings - Google Patents
Foundry sand prepn - to improve the stripping of castingsInfo
- Publication number
- FR2137174A3 FR2137174A3 FR7117577A FR7117577A FR2137174A3 FR 2137174 A3 FR2137174 A3 FR 2137174A3 FR 7117577 A FR7117577 A FR 7117577A FR 7117577 A FR7117577 A FR 7117577A FR 2137174 A3 FR2137174 A3 FR 2137174A3
- Authority
- FR
- France
- Prior art keywords
- prepn
- castings
- stripping
- improve
- foundry sand
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
0.1-0.6 wt.% technically pure bitumen is introduced into the mass of conventionally prepd. foundry sand by means of a pulveriser as the sand is being mixed. The bitumen is deposited on the sand in the form of spherical granules 10-70 in dia.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7117577A FR2137174A3 (en) | 1971-05-14 | 1971-05-14 | Foundry sand prepn - to improve the stripping of castings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7117577A FR2137174A3 (en) | 1971-05-14 | 1971-05-14 | Foundry sand prepn - to improve the stripping of castings |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2137174A3 true FR2137174A3 (en) | 1972-12-29 |
FR2137174B3 FR2137174B3 (en) | 1974-03-08 |
Family
ID=9077078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7117577A Granted FR2137174A3 (en) | 1971-05-14 | 1971-05-14 | Foundry sand prepn - to improve the stripping of castings |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2137174A3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2199485A1 (en) * | 1972-08-24 | 1974-04-12 | Shell Int Research | |
FR2448399A1 (en) * | 1979-01-12 | 1980-09-05 | Proizv Ob | BINDER FOR AIR-SOLIDABLE MOLDING SAND, PROCESS FOR PREPARING SAID BINDER AND AIR-SOLIDABLE MOLDING SAND CONTAINING SAID BINDER |
-
1971
- 1971-05-14 FR FR7117577A patent/FR2137174A3/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2199485A1 (en) * | 1972-08-24 | 1974-04-12 | Shell Int Research | |
FR2448399A1 (en) * | 1979-01-12 | 1980-09-05 | Proizv Ob | BINDER FOR AIR-SOLIDABLE MOLDING SAND, PROCESS FOR PREPARING SAID BINDER AND AIR-SOLIDABLE MOLDING SAND CONTAINING SAID BINDER |
Also Published As
Publication number | Publication date |
---|---|
FR2137174B3 (en) | 1974-03-08 |
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