FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Proposed method comprises placing the alloy in the mould to oxidise alloy element for formation of protective ply on its surface. Mould has inner coating including chromium oxide, niobium oxide, titanium oxide, tantalum oxide, silicon oxide, zirconium, oxide yttrium or their combination. Protective ply is formed by oxidation of one or more inner coating components by one or more elements of the alloy.
EFFECT: minor quantity of surface blisters in casts.
10 cl, 5 dwg, 8 ex
| Title | Year | Author | Number |
|---|---|---|---|
| CASTING CORE OF REFRACTORY METAL (VARIANTS) | 2004 |
|
RU2311985C2 |
| CASTING CORE FOR INVESTMENT PATTERN CASTING (VARIANTS), CASTING CORE - SHELL MOLD ASSEMBLY, CASTING MOLD AND CASTING PRODUCED WITH USE OF SUCH CORE | 2002 |
|
RU2240203C2 |
| METHOD OF OBTAINING A SEMI-FINISHED PRODUCT FROM A ZIRCONIUM BASED ALLOY (OPTIONS) | 2018 |
|
RU2675178C1 |
| GAS TURBINE PART EQUIPPED WITH PROTECTIVE COATING, AND METHOD OF APPLYING PROTECTIVE COATING TO METAL BASE MADE FROM SUPERALLOY | 2004 |
|
RU2355891C2 |
| MIXTURE AND METHOD FOR MANUFACTURING CASTING CERAMIC CORES | 1996 |
|
RU2098220C1 |
| METHOD OF PRODUCING HEAT-RESISTANT ALLOY BASED ON NIOBIUM MATRIX WITH INTERMETALLIC HARDENING | 2015 |
|
RU2595084C1 |
| METHOD OF MANUFACTURE OF FOUNDRY HIGH-FIRE-REINFORCED CERAMIC FORMS | 2015 |
|
RU2625859C2 |
| ALLOY, PROTECTIVE LAYER AND STRUCTURAL COMPONENT | 2011 |
|
RU2550461C2 |
| METHOD FOR OBTAINING A HEAT-RESISTANT ALLOY BASED ON NIOBIUM | 2015 |
|
RU2618038C2 |
| METHOD AND APPARATUS FOR DIRECTIONAL CRYSTALLIZATION OF MELT | 1995 |
|
RU2146184C1 |
