FIELD: foundry, namely methods for making ceramic cores for castings of cooled blades of gas turbine engines and power plants.
SUBSTANCE: method comprises steps of molding cores in press-mold; firing it; removing fins out of formed opening in cores by laser working; performing laser working at least by means of one impulse having duration 0.2 ≤ τ < 1 ms and irradiation power intensity 106 < q ≤ 9 x 107 Wt/cm2. Laser working may be performed before or after firing operation.
EFFECT: improved quality of shaped surfaces of cores.
2 tbl, 1 ex
| Title | Year | Author | Number |
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| METHOD OF MAKING COMPOUND CERAMIC ROD FOR CASTING OF COMPLETE PRODUCTS | 2017 |
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| LASER PROCESSING OF NONMETALLIC PLATES | 2015 |
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| METHOD OF LASER SURFACE CLEANING | 2017 |
|
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| METHOD OF LASER ANNEALING OF NON-METALLIC MATERIALS | 2016 |
|
RU2633860C1 |
| METHOD OF PROCESSING NONMETALLIC MATERIALS | 2011 |
|
RU2486628C1 |
| HOW TO ELIMINATE CICATRICIAL CHANGES IN THE SKIN OF THE FACE | 2022 |
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RU2802710C1 |
