| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to metallurgy. One or several elements made of chemically processed metals or alloys are placed in the mould. Pre-foamed cellular polystyrene granules are filled up with or blown in the mould. Granules are subjected to final foaming. After making the pattern, mould is knocked down while elements fitted in the mould are kept in cellular polystyrene pattern. To make a boundary transition layer, alloying elements are applied on element fitted in the mould, say, pint, paste or powder with different concentration of alloying elements or compounds.EFFECT: high-precision composite casts with preset properties.7 cl, 6 dwg, 3 ex |
