PL54583B1 - - Google Patents
Download PDFInfo
- Publication number
- PL54583B1 PL54583B1 PL112069A PL11206965A PL54583B1 PL 54583 B1 PL54583 B1 PL 54583B1 PL 112069 A PL112069 A PL 112069A PL 11206965 A PL11206965 A PL 11206965A PL 54583 B1 PL54583 B1 PL 54583B1
- Authority
- PL
- Poland
- Prior art keywords
- sand
- silicon carbide
- graphite
- coating
- molds
- Prior art date
Links
- 238000000576 coating method Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 4
- 239000011253 protective coating Substances 0.000 claims description 3
- 235000013312 flour Nutrition 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003110 molding sand Substances 0.000 claims 1
- 239000011819 refractory material Substances 0.000 claims 1
- 229910052845 zircon Inorganic materials 0.000 claims 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 229920001353 Dextrin Polymers 0.000 description 3
- 239000004375 Dextrin Substances 0.000 description 3
- 235000019425 dextrin Nutrition 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Description
Opublikowano: 8.III.1968 54583 KI. 31 b1, 3/00 MKP B 22 c Wspóltwórcy wynalazku: inz. Józef Paluchiewicz, inz. Czeslaw Smiech, inz. Wieslaw Zadecki Wlasciciel patentu: Przedsiebiorstwo Dostaw Materialów Odlewniczych, Katowice (Polska) Pokrycie ochronne do form i rdzeni odlewniczych Przedmiotem wynalazku jest pokrycie ochronne do form i rdzeni zabezpieczajace powierzchnie for¬ my przed dzialaniem goracego metalu. W przemy¬ sle odlewniczym stosuje sie powszechnie powloki ochronne do zabezpieczenia powierzchni form i 5 rdzeni piaskowych przez wytworzenie warstwy zabezpieczajacej wneke formy lub powierzchnie rdzenia przed dzialaniem wysokiej temperatury cieklego metalu jak: staliwo, zeliwo lub ich stopy.Ponadto uzycie znanych pokryc opartych na 10 skladnikach wysoko ognioodpornych, na przyklad cyrkonu, grafitu, maczki kwarcowej i innych, ulat¬ wia proces wypelniania formy cieklym metalem, eliminuje wady powierzchniowe odlewu i powo¬ duje uzyskanie gladkiej i estetycznej powierzchni 15 odlewu.Istota wynalazku polega na zastosowaniu nowe¬ go, dotychczas nie stosowanego skladnika w po¬ kryciach formierskich, mianowicie weglika krze¬ mu, zwlaszcza otrzymywanego podczas produkcji 20 elektrod weglowych, posiadajacego wysoka ognio- odpornosc i wlasnosci wiazace, umozliwiajace przy¬ wieranie do zabezpieczanej powierzchni.Zastosowanie pokrycia wedlug wynalazku za¬ pewnia uzyskanie odlewów bez wad powierzchnio- 25 wych i pozwala na wyeliminowanie obecnie sto¬ sowanych drogich pokryc opartych na skladnikach importowanych, na przyklad: cyrkon, grafit itp.Oprócz rezultatów technologicznych powstana efek¬ ty ekonomiczne na skutek nizszych kosztów ma- 30 terialów bezposrednich w stosunku do pokryc tra¬ dycyjnie stosowanych, dzieki czemu mozna liczyc na rozpowszechnienie stosowania pokrycia bedace¬ go przedmiotem wynalazku.Pokrycie formierskie sporzadzone na bazie we¬ glika krzemu z odpowiednim dodatkiem, na przy¬ klad elektrografitu, moze byc stosowane do form i rdzeni wykonywanych z piasku ze spoiwem na¬ turalnym oraz z mas syntetycznych i mas opar¬ tych na szkle wodnym lub innych mas stosowa¬ nych w odlewnictwie.W zaleznosci od tworzywa odlewu, wielkosci od¬ lewu i rodzaju uzytych materialów formierskich opracowano nastepujace przyklady pokryc: Przyklad I: Weglik krzemu Kaolin Dekstryna Przyklad II: Weglik krzemu Grafit Bentonit gat. I Dekstryna Przyklad III: Weglik krzemu Grafit 94% 5°/o l°/o 75% 20% 4% 1% 50% 45% 54583Bentonit V-6 Dekstryna Przyklad IV: 4°/o P/o 54583 na wysuszeniu w temperaturze 110°C i rozdrob¬ nieniu wedlug warunków technicznych obowiazu¬ jacych w odlewnictwie.Weglik krzemu 85% Sadza pólaktywna lO^/o Grafit 5% Wymienione w podanych przykladach ilosci po- 10 szczególnych skladników moga ulegac zmianom w zaleznosci od potrzeb technologicznych odlewni stosujacej pokrycie.Uzycie weglika krzemu jako skladnika pokryc wymaga wlasciwego przygotowania polegajacego 15 PLPublished: 8.III.1968 54583 IC. 31 b1, 3/00 MKP B 22 c Inventors of the invention: engineer Józef Paluchiewicz, engineer Czeslaw Smiech, engineer Wieslaw Zadecki Patent owner: Przedsiębiorstwo Dostaw Materiałów Foundry, Katowice (Poland) Protective coating for foundry molds and cores. protective molds and cores protecting mold surfaces against hot metal. In the foundry industry, protective coatings are commonly used to protect the surfaces of molds and sand cores by creating a layer that protects the cavities of the molds or the surfaces of the core against high temperature of liquid metal, such as cast steel, cast iron or their alloys. In addition, the use of known coatings based on 10 components highly fire-resistant, for example zirconium, graphite, quartz flour and others, it facilitates the process of filling the mold with liquid metal, eliminates surface defects of the casting and results in obtaining a smooth and aesthetic casting surface. The essence of the invention consists in the use of a new, previously not the component used in molding coatings, namely silicon carbide, especially obtained during the production of carbon electrodes, having high fire resistance and bonding properties, enabling adherence to the surface to be protected. The use of the coating according to the invention ensures obtaining castings without defects area materials and allows to eliminate the currently used expensive coatings based on imported ingredients, for example: zirconium, graphite, etc. In addition to the technological results, economic effects will arise due to the lower costs of materials directly in relation to the coverage of the waste. used traditionally, so one can count on the widespread use of the coating that is the subject of the invention. Molding coating made on the basis of silicon carbide with a suitable additive, for example electrographite, can be used for molds and cores made of sand with a binder Depending on the material of the casting, the size of the casting and the type of molding materials used, the following examples of coatings were developed: Example I: Silicon carbide Kaolin Dextrin Example II: Silicon carbide Graphite Bentonite grade I Dextrin Example III: Silicon carbide Graphite 94% 5 ° / ol % 75% 20% 4% 1% 50% 45% 54583 Bentonite V-6 Dextrin. Example IV: 4% P / 54583 on drying at 110 ° C and grinding according to technical conditions applicable in foundry Silicon carbide 85% Semi-active carbon black 10 ^ / o Graphite 5% The amounts of the 10 individual components mentioned in the given examples may change depending on the technological needs of the foundry applying the coating.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL54583B1 true PL54583B1 (en) | 1967-12-27 |
Family
ID=
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20120126092A1 (en) | Release agent for producing mold coatings | |
| US2961751A (en) | Ceramic metal casting process | |
| BRPI1105766B1 (en) | COMPOSITION OF FOUNDRY COATING, PROCESS FOR THE PREPARATION OF A COVERED MOLD OR FOUNDRY, AND COATED FOUNDRY | |
| US8088208B2 (en) | Highly insulating and fireproof coating materials for casting moulds | |
| GB1150290A (en) | Production of Coated Metal Castings. | |
| US20210308745A1 (en) | Sizing composition, method for coating a casting mould and use of the sizing composition for coating a casting mould | |
| US2491096A (en) | Casting mold | |
| ES330507A1 (en) | Procedure to inhibit from the erosion the surface of molds for the foundry. (Machine-translation by Google Translate, not legally binding) | |
| PL54583B1 (en) | ||
| GB722816A (en) | Improvements relating to precision casting by the lost-wax process | |
| US2568364A (en) | Process of making investment mold | |
| US1886249A (en) | Mold for high temperature castings | |
| US3770465A (en) | Mold wash composition | |
| GB1159861A (en) | Method of Casting Metal Products | |
| JPS56119641A (en) | Production of mold for quick precision casting | |
| US2120526A (en) | Mold and process of making same | |
| US1570802A (en) | Means for preventing adherence of cast metal to the mold | |
| US3057740A (en) | Inorganic binder for refractory materials | |
| US2645558A (en) | Lining for centrifugal iron casting molds | |
| US1817245A (en) | Coating for metal casting molds and cores | |
| PL67631B1 (en) | ||
| SU446345A1 (en) | Non-stick paint for casting molds and cores | |
| US2535662A (en) | Mold for casting metals | |
| US1935591A (en) | Manufacture of sand molds for casting easily oxidizable metal | |
| JPS56160847A (en) | Slurry for mold |