| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to metallurgy. Gas turbine engine is produced by investment casing. Blade comprises root 4 with anvil 5 made integral with said root. Anvil comprises site 5a provided with first tray 12 with radial surfaces 13 and bottom 14. Said tray 12 serves to decrease anvil thickness. Second tray 16 is made in first tray 12, between root and anvil, to facilitate metal pouring in investment mould solely at one point.EFFECT: ruled out porosity.6 cl, 3 dwg |
