PL75334B2 - - Google Patents
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- Publication number
- PL75334B2 PL75334B2 PL15451972A PL15451972A PL75334B2 PL 75334 B2 PL75334 B2 PL 75334B2 PL 15451972 A PL15451972 A PL 15451972A PL 15451972 A PL15451972 A PL 15451972A PL 75334 B2 PL75334 B2 PL 75334B2
- Authority
- PL
- Poland
- Prior art keywords
- parts
- weight
- quartz sand
- sand
- graphite
- Prior art date
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000006004 Quartz sand Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 239000002817 coal dust Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Ceramic Products (AREA)
Description
Pierwszenstwo: Zgloszenie ogloszono: 31.05.1973 Opis patentowy opublikowano: 03.03.1975 75334 KI. 31bM/22 MKP B22cl/22 Twórcywynalazku: Józef Nowakowski, Jan Kurcab Uprawniony z patentu tymczasowego: Instytut Odlewnictwa, Kraków (Polska) Masa formierska i rdzeniowa Przedmiotem wynalazku jest masa formierskai rdzeniowa, sypka, samoutwardzalna.Obecnie stosowane sa w odlewnictwie sypkie masy samoutwardzalne na bazie piasku kwarcowego ze szklem wodnym lub masy furanowe w których spoiwem jest zywica mocznikowo-furfurylowa.Niedogodnoscia stosowania mas ze szklem wodnym jest ich trudna wybijalnosc co znacznie utrudnia przebieg pracy na odlewniach.Natomiast stosowanie w masach samoutwardzalnych spoiwa, którymjest zywica mocznikowo-furfurylowa znacznie podwyzsza koszty produkcji z powodu koniecznosci stosowania importowanego i drogiego alkoholu furfurylowego.Celem wynalazku jest usuniecie powyzszych niedogodnosci, a zadaniem technicznym jest opracowanie jakosciowo-ilosciowego skladu sypkiej masy samoutwardzalnej.Zadanie techniczne zostalo rozwiazane przez opracowanie sypkiej masy samoutwardzalnej na bazie piasku kwarcowego, która zawiera w swym skladzie zywice karbamidowa w ilosci 1—4 czesci ciezarowych na 100 czesci ciezarowych piasku kwarcowego oraz pyl weglowy lub grafit do 5 czesci ciezarowych.Masa wedlug wynalazku posiada bardzo dobre wlasnosci technologiczne oraz doskonala wybijalnosc. Masa eliminuje stosowanie importowanych i drogich spoiw opartych na alkoholu furfurylowym, dzieki czemu jest ona okolo pieciokrotnie tansza.Masa wedlug wynalazku sklada sie z piasku kwarcowego z dodatkiem zywicy karbamidowej w ilosci 1-4 czesci ciezarowych na 100 czesci ciezarowych piasku kwarcowego oraz pylu weglowego lub grafitu do 5 czesci ciezarowych i slabych kwasów, a zwlaszcza kwasów fosforowych w ilosci do 2 czesci ciezarowych.Mase sporzadza sie poprzez dokladne wymieszanie w mieszarce piasku kwarcowego z kwasem, pylem weglowym lub grafitem w czasie okolo 2 minut. Nastepnie dodaje sie zywice karbamidowa i miesza przez okolo 4 minuty.Przykladowy sklad masy: piasek kwarcowy ¦.¦¦»- 100 cz.ciez. zywica karbamidowa - 2,5 cz.ciez. pyl weglowy lub grafit - 2 cz.ciez,2 75 334 kwas fosforowy 75% - 0,3 cz.ciez. woda - 1 cz.ciez. PL PLPriority: Application announced: May 31, 1973 Patent description was published: March 3, 1975 75334 KI. 31bM / 22 MKP B22cl / 22 Creators of the invention: Józef Nowakowski, Jan Kurcab Authorized under the provisional patent: Instytut Odlewnictwa, Kraków (Poland) Molding and core sand. The subject of the invention is loose, self-hardening molding sand. Currently, self-hardening loose sand is used in foundry. based on quartz sand with water glass or furan sands in which the binder is urea-furfuryl resin. The inconvenience of using sands with water glass is their difficult knock out properties, which significantly hinders the course of work in foundries. production costs due to the need to use imported and expensive furfuryl alcohol. The aim of the invention is to remove the above-mentioned inconveniences, and the technical task is to develop a qualitative and quantitative composition of the self-hardening loose mass. The technical task was solved by developing a self-hardening loose mass. based on quartz sand, which contains in its composition carbamide resin in the amount of 1-4 parts by weight per 100 parts by weight of quartz sand and coal dust or graphite up to 5 parts by weight. According to the invention, the material has very good technological properties and excellent breakability. The mass eliminates the use of imported and expensive binders based on furfuryl alcohol, making it about five times cheaper.The mass according to the invention consists of quartz sand with the addition of carbamide resin in the amount of 1-4 parts by weight per 100 parts by weight of quartz sand and coal dust or graphite Up to 5 parts by weight and weak acids, especially phosphoric acids up to 2 parts by weight. The mass is prepared by thoroughly mixing quartz sand with acid, carbon dust or graphite in a mixer for about 2 minutes. Then the carbamide resin is added and mixed for about 4 minutes. Example composition of the mass: quartz sand .¦¦ »- 100 parts of thin cloth. carbamide resin - 2.5 parts of thin material coal dust or graphite - 2 parts of thin material, 2 75 334 phosphoric acid 75% - 0.3 parts of thin material water - 1 part ch. PL PL
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15451972A PL75334B2 (en) | 1972-04-04 | 1972-04-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15451972A PL75334B2 (en) | 1972-04-04 | 1972-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL75334B2 true PL75334B2 (en) | 1974-12-31 |
Family
ID=19958062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL15451972A PL75334B2 (en) | 1972-04-04 | 1972-04-04 |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL75334B2 (en) |
-
1972
- 1972-04-04 PL PL15451972A patent/PL75334B2/pl unknown
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