RO101522A2 - Casting cores and moulding batch production method - Google Patents
Casting cores and moulding batch production methodInfo
- Publication number
- RO101522A2 RO101522A2 RO1988133798A RO13379888A RO101522A2 RO 101522 A2 RO101522 A2 RO 101522A2 RO 1988133798 A RO1988133798 A RO 1988133798A RO 13379888 A RO13379888 A RO 13379888A RO 101522 A2 RO101522 A2 RO 101522A2
- Authority
- RO
- Romania
- Prior art keywords
- production method
- per cent
- batch production
- casting cores
- urelit
- Prior art date
Links
- 238000005266 casting Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 238000010923 batch production Methods 0.000 title 1
- 239000000206 moulding compound Substances 0.000 title 1
- 239000000843 powder Substances 0.000 abstract 2
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract 1
- 229920001807 Urea-formaldehyde Polymers 0.000 abstract 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 abstract 1
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
Process comprises mixing foundry sand (95-99 per cent by weight) with 1-5 per cent ''urelit'' type urea formaldehyde resin. To increase stripping efficiency, 0.1-10 per cent of polyvinyl alcohol in powder form is added to the mix. The urelit:powder ratio is 0.4-0.6, and the cores and moulds facilitate casting of non-ferrous alloys at temps. of at least 600 deg.C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO1988133798A RO101522A2 (en) | 1988-06-02 | 1988-06-02 | Casting cores and moulding batch production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO1988133798A RO101522A2 (en) | 1988-06-02 | 1988-06-02 | Casting cores and moulding batch production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO101522B1 RO101522B1 (en) | 1991-06-28 |
| RO101522A2 true RO101522A2 (en) | 1991-12-02 |
Family
ID=20121819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO1988133798A RO101522A2 (en) | 1988-06-02 | 1988-06-02 | Casting cores and moulding batch production method |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO101522A2 (en) |
-
1988
- 1988-06-02 RO RO1988133798A patent/RO101522A2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO101522B1 (en) | 1991-06-28 |
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