PL65490B1 - - Google Patents
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- Publication number
- PL65490B1 PL65490B1 PL138912A PL13891270A PL65490B1 PL 65490 B1 PL65490 B1 PL 65490B1 PL 138912 A PL138912 A PL 138912A PL 13891270 A PL13891270 A PL 13891270A PL 65490 B1 PL65490 B1 PL 65490B1
- Authority
- PL
- Poland
- Prior art keywords
- coating
- metal molds
- water
- coatings
- graphite
- Prior art date
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- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Description
Opublikowano: 15.VII.1972 65490 KI. 31H3/00 MKP B22c 3/00 Wspóltwórcy wynalazku: Zbigniew Lech, Jan Nadzieja, Tadeusz Bartus Wlasciciel patentu: Instytut Odlewnictwa, Kraków (Polska) Pokrycie ochronne do form metalowych Przedmiotem wynalazku jest pokrycie ochronne do form metalowych stosowane zwlaszcza przy wykonywaniu odlewów ze stopów metali niezelaz¬ nych.Obecnie do form metalowych stosowane sa po¬ krycia, w których sklad wchodza na przyklad ruda chromowa, glinka mielona, szamota wymieszana ze szklem wodnym i woda. Nanoszone sa one na podgrzane powyzej 100°C powierzchnie robocze form metalowych przez natryskiwanie lub pomalo¬ wanie pedzlem.Niedogodnoscia tych pokryc jest trudnosc ich otrzymywania i mala odpornosc powlok z nich uzyskiwanych na scieranie i dzialanie wysokich temperatur.Celem wynalazku jest opracowanie pokrycia lat¬ wego do wykonywania oraz zapewniajacego dobra odpornosc na scieranie i wysokie wlasnosci wy¬ trzymalosciowe powlok, a zadaniem technicznym jest opracowanie skladu jakosciowo-ilosciowego pokrycia.Zadanie techniczne zostalo wykonane przez opra¬ cowanie pokrycia, które oprócz szkla wodnego, gra¬ fitu, wody zawiera dodatkowo zielony tlenek chro¬ mowy (Cr203) najkorzystniej w ilosci od 2 — 70 20 czesci wagowych. Pokrycie wedlug wynalazku cha¬ rakteryzuje sie latwoscia sporzadzania i nanosze¬ nia na wneki irobocze form metalowych.Powloki wykonane z pokrycia wedlug wynalaz¬ ku posiadaja duza odpornosc na scieranie oraz dzialanie wysokich temperatur i bardzo dobra przyczepnosc do wnek form metalowych. Odlewy otrzymywane z form metalowych zabezpieczanych pokryciem wedlug wynalazku posiadaja duza gladkosc powierzchni.Przykladowy sklad pokrycia: zielony tlenek chro- — 15 czesci wagowych mowy (Cr203) szklo wodne — 10 „ „ grafit — 5 „ woda — 80 „ „ Pokrycie wedlug wynalazku wykonuje sie przez zmieszanie ujednorodniajace zielonego tlenku chromu ze szklem wodnym, grafitem i woda. PL PLPublished: 15.VII.1972 65490 IC. 31H3 / 00 MKP B22c 3/00 Inventors: Zbigniew Lech, Jan Nadzieja, Tadeusz Bartus Patent owner: Foundry Research Institute, Kraków (Poland) Protective coating for metal molds The subject of the invention is protective coating for metal molds, used in particular when making metal alloy castings At present, coatings are used for metal molds, the composition of which includes, for example, chrome ore, ground clay, fireclay mixed with water glass and water. They are applied to the working surfaces of metal molds heated above 100 ° C by spraying or brushing. The inconvenience of these coatings is the difficulty of obtaining them and the low resistance of the coatings obtained from them to abrasion and the action of high temperatures. The aim of the invention is to develop a light coating for making and ensuring good abrasion resistance and high strength properties of coatings, and the technical task is to develop the composition of the qualitative and quantitative coating. The technical task was carried out by developing a coating which, in addition to water glass, graphite, water, contains green chromium oxide (Cr2O3) most preferably in an amount from 2 to 70 parts by weight. The coating according to the invention is characterized by the ease of preparation and application to the recesses and working of metal molds. The coatings made of the coating according to the invention have a high resistance to abrasion and the action of high temperatures and very good adhesion to the cavities of metal molds. According to the invention, the castings obtained from metal molds secured with a coating have a high surface smoothness. Example coating composition: green oxide - 15 parts by weight of speech (Cr203) water glass - 10 "graphite - 5" water - 80 "" The coating according to the invention is made by homogenizing green chromium oxide with water glass, graphite and water. PL PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL65490B1 true PL65490B1 (en) | 1972-02-29 |
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