Process for manufacturing a single-piece blisk with a temporary blade support ring arranged at a distance from blade tips
View Patent ↗A process for manufacturing a single-piece blisk, including: using an abrasive water jet to cut a block of material, so as to create blade preforms extending radially outwards from a disk, while keeping material to form a connecting mechanism between directly consecutive blade preforms, the cutting being done such that the connecting mechanism approximately forms a ring at a radial spacing from the disk, connecting the blade preforms together at a radially inwards distance from their tips, and then removing the connecting mechanism.
1. A process for manufacturing a single-piece blisk, comprising:
cutting a block of material using an abrasive water jet to create blade preforms extending radially outwards from a disk, while keeping material to form a connecting mechanism between directly consecutive blade preforms, the cutting being done such that the connecting mechanism approximately forms a ring at a radial spacing from the disk, and connects the blade preforms together at a radially inwards distance from their tips; and
removing the connecting mechanism.
2. The process according to claim 1 , wherein the cutting using the abrasive water jet is done such that the ring connects all blade preforms to each other.
3. The process according to claim 1 , wherein the cutting using the abrasive water jet is followed by milling the blade preforms.
4. The process according to claim 3 , wherein the milling the blade preforms is done so as to obtain profiled blade blanks, and further includes a milling to finish the blade blanks, so as to obtain blades to a final profile.
5. The process according to claim 3 , wherein the removing the connecting mechanism is done before the milling the blade preforms.
6. The process according to claim 4 , wherein the removing the connecting mechanism is done between the milling the blade preforms and the milling to finish the blade blanks.
7. The process according to claim 3 , wherein the removing the connecting mechanism is done after the milling the blade preforms.
8. The process according to claim 4 , wherein the removing the connecting mechanism is done after the milling to finish the blade blanks.
9. The process according to claim 1 , wherein the diameter of the single-piece blisk is greater than or equal to 800 mm.
10. The process according to claim 1 , wherein the thickness of the single-piece blisk is greater than or equal to 100 mm.
11. The process according to claim 1 , wherein the blades of the single-piece blisk are twisted.
12. The process according to claim 1 , wherein the material block used is made of titanium or a titanium alloy.
13. The process according to claim 1 , wherein the single-piece blisk is a single-piece blisk for an aircraft turbine engine.
14. The process according to claim 1 , wherein the single-piece blisk is a single-piece blisk for a turbine or compressor rotor in an aircraft turbine engine.