| 摘要 |
FIELD: manufacture of casting molds and cores in small-batch and individual production of castings of ferrous and non-ferrous metals and alloys. ^ SUBSTANCE: composition contains refractory filler, binder, hardening agent, foaming agent and water. Foaming agent is in the form of surface-active matter on base of mixture of triethanolamine salts and sulfoesters of higher fatty alcohols C8 - C 10 and C12 - C14 taken in relation (9 - 3):1. Composition contains foam stabilizer on base of organosilicone liquids. ^ EFFECT: improved gas permeability, tenacity of composition, technological decomposition of foaming agent, elimination of mold drying operation. ^ 3 cl, 1 tbl |
