RO101522B1 - Casting cores and moulding batch production method - Google Patents
Casting cores and moulding batch production methodInfo
- Publication number
- RO101522B1 RO101522B1 RO133798A RO13379888A RO101522B1 RO 101522 B1 RO101522 B1 RO 101522B1 RO 133798 A RO133798 A RO 133798A RO 13379888 A RO13379888 A RO 13379888A RO 101522 B1 RO101522 B1 RO 101522B1
- Authority
- RO
- Romania
- Prior art keywords
- production method
- batch production
- casting cores
- cores
- temperatures
- Prior art date
Links
- 238000005266 casting Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 238000010923 batch production Methods 0.000 title 1
- 239000000206 moulding compound Substances 0.000 title 1
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract 2
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 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
- 239000011230 binding agent Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 abstract 1
- 229920002689 polyvinyl acetate Polymers 0.000 abstract 1
- 239000011118 polyvinyl acetate Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
Inventia se refera la un procedeu de fabricare a miezurilor de turnatorie, care utilizeaza ca liant o rasina ureoformaldehidica tip urelit, conform inventiei, contine 0,1...10% alcool polivinilic solid, sub forma de praf, la un raport urelit: alcool polivinilic de 0,4...0,6. Adaosul de alcool polivinilic asigura îmbunatatirea dezbaterii acestor miezuri, inclusiv la temperaturi mai scazute de turnare, respectiv la temperaturi de minimum 600 degree C, specifice turnarii aliajelor neferoase.The invention relates to a process for the manufacture of foundry cores, which uses as a binder an urethal urea formaldehyde resin according to the invention, contains 0.1 ... 10% solid polyvinyl alcohol in powder form at an urelit: alcohol ratio polyvinyl acetate of 0.4 ... 0.6. Addition of polyvinyl alcohol provides improved debates for these cores, including lower casting temperatures and temperatures of at least 600 degrees Celsius, specific to casting non-ferrous alloys.
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 true RO101522B1 (en) | 1991-06-28 |
| RO101522A2 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 |
|---|---|
| RO101522A2 (en) | 1991-12-02 |
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