YU47435B - PROCEDURE FOR CASTING METAL PARTS UNDER PRESSURE IN FOAM USE - Google Patents
PROCEDURE FOR CASTING METAL PARTS UNDER PRESSURE IN FOAM USEInfo
- Publication number
- YU47435B YU47435B YU164190A YU164190A YU47435B YU 47435 B YU47435 B YU 47435B YU 164190 A YU164190 A YU 164190A YU 164190 A YU164190 A YU 164190A YU 47435 B YU47435 B YU 47435B
- Authority
- YU
- Yugoslavia
- Prior art keywords
- model
- pressure
- sand
- hardening
- mold
- Prior art date
Links
Landscapes
- Mold Materials And Core Materials (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Powder Metallurgy (AREA)
Abstract
POSTUPAK ZA LIVENJE METALNIH DELOVA POD PRITISKOM U PENU ZA JEDNOKRATNU UPOTREBU, koji sadrži sledeće stupnjeve: - korišćenje modela za ulivanje od pene od organske materije prevučene filmom od vatrostalnog materijala; - potapanje tog modela u kalup suvog peska bez veziva; - punjenje kalupa sa rastopljenim metalom tako da model sagori; - odstranjivanje isparenja i tečnih ostataka koji potiču od modela; - stvrdnjavanje metala i dobijanje odlivka; - primena izostatičkog pritiska sa maksimalnom vrednosti izmedju 0,5 i 1,5 MPa na kalup pre nego očvrsnuti deo metala predje 40 mas.%, naznačen time, da taj pritisak raste takvom brzinom da u odnosu na granulaciju peska i dubinu potapanja model ostvari brzo i istovremeno sa gubitkom šarže prolaskom kroz pesak nadpritisak rastopljenog metala u odnosu na pesak na nivou njihove granične površine, taj nadpritisak dostiže vrednost izmedju dve granice i zatim se smanjuje tako da se pritisak poveća i zatim se taj pritisak održava konstantan do potpunog otvrdnjavanja. Prijava sadrži još 4 zavisna zahteva.PROCEDURE FOR CASTING METAL PARTS UNDER PRESSURE IN ONE-TIME FOAM, which contains the following stages: - use of a model for casting foam of organic matter coated with a film of refractory material; - immersion of this model in a mold of dry sand without binder; - filling the mold with molten metal so that the model burns; - removal of vapors and liquid residues originating from the model; - hardening of metals and obtaining castings; - application of isostatic pressure with a maximum value of between 0.5 and 1.5 MPa per mold before hardening of the metal to 40% by weight, characterized in that the pressure increases at such a rate that, in relation to the granulation of sand and the depth of immersion, the model achieves rapid and simultaneously with the loss of the batch by passing through the sand the overpressure of the molten metal relative to the sand at the level of their boundary surface, that overpressure reaches a value between the two boundaries and then decreases so that the pressure is increased and then that pressure is kept constant until complete hardening. The application contains 4 more dependent requests.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| YU164190A YU47435B (en) | 1990-08-29 | 1990-08-29 | PROCEDURE FOR CASTING METAL PARTS UNDER PRESSURE IN FOAM USE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| YU164190A YU47435B (en) | 1990-08-29 | 1990-08-29 | PROCEDURE FOR CASTING METAL PARTS UNDER PRESSURE IN FOAM USE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| YU164190A YU164190A (en) | 1994-06-24 |
| YU47435B true YU47435B (en) | 1995-03-27 |
Family
ID=47430284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| YU164190A YU47435B (en) | 1990-08-29 | 1990-08-29 | PROCEDURE FOR CASTING METAL PARTS UNDER PRESSURE IN FOAM USE |
Country Status (1)
| Country | Link |
|---|---|
| YU (1) | YU47435B (en) |
-
1990
- 1990-08-29 YU YU164190A patent/YU47435B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| YU164190A (en) | 1994-06-24 |
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