FIELD: metallurgical industry branch.
SUBSTANCE: sand contains aluminum-chrome phosphate binder modified at synthesis stage with methyl carbamides taken in quantity 0.6 -1.10 mass. %, amine based modifying agent and refractory filler. Modifying agent contains, mass. %: monoethanol amine, 15 - 70; 1-(2oxyethyl)imidazolidone-2 mixed with and 1-(2-oxyethel)ethylene diamine, no more than 50; water, no more than 20. Ingredients of sand are taken in next relation, mass. %: binder, 2 - 6; amine based modifying agent, 0.2 - 3.0; refractory filler, the balance.
EFFECT: enhanced preservation properties, lowered tendency for crumbling, stable strength characteristics even after setting.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| COLD SETTABLE SAND FOR MAKING CASTING MOLDS AND CORES | 2000 |
|
RU2187405C2 |
| COLD HARDENING MIXTURE FOR CASTING MOULDS AND RODS | 2007 |
|
RU2354489C1 |
| UREA-FORMALDEHYDE FILLER PRODUCTION PROCESS | 2003 |
|
RU2250238C1 |
| ADHESIVE COMPOSITION | 2004 |
|
RU2268865C1 |
| 0 |
|
SU1567314A1 | |
| MODIFIED DRYING OIL PREPARATION METHOD | 2003 |
|
RU2231533C1 |
| COMPOSITION FOR GLASS CLEANSING | 2003 |
|
RU2233317C1 |
| METHOD FOR PRODUCTION OF IMPREGNATING MELAMINE-CARBAMIDE- FORMALDEHYDE RESIN | 2003 |
|
RU2252228C1 |
| METHOD FOR OBTAINING FIRE-RETARDANT COMPOSITION | 2007 |
|
RU2339671C1 |
| MIXTURE FOR MANUFACTURE OF COLD-CURING CASTING MOLDS AND CORES | 1982 |
|
RU2033878C1 |
