Method for manufacturing a metal part

Patent metadata

Field	Value
Publication number	US-9296072-B2
Application number	US-201113878022-A
Country	US
Kind code	B2
Filing date	Oct 5, 2011
Priority date	Oct 5, 2010
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

A method for making a metallic part, includes positioning at least one metallic coil formed from flexible metal foil including a plurality of notches, on a shaping tool, the at least one coil being manually deformable when cold along three directions in space (X, Y, Z); hot isostatic pressing the at least one metallic coil in a tool causing compaction of the metallic coil so as to obtain the metallic part.

First claim

The invention claimed is:

1. A method for making a metallic part comprising:
positioning at least one metallic coil formed from flexible metal foil comprising a plurality of notches, on a shaping tool, said at least one coil being manually deformable when cold along three directions in space, and
hot isostatic pressing said at least one metallic coil in a tool causing compaction of said metallic coil so as to obtain said metallic part,
wherein before said positioning, said method comprises cutting out a plurality of notches in at least one flexible metallic foil so as to form said at least one metallic coil.

2. The method for making a metallic part according to claim 1 , wherein said at least one metallic coil is formed by the assembly of two pieces of metallic foil cut out during said cutting out of a plurality of notches.

3. The method for making a metallic part according to claim 1 , wherein before said positioning, said method comprises making at least one metallic pouch from the at least one flexible metallic foil, said at least one metallic coil being formed from cutting out a plurality of notches in said at least one flexible metallic pouch.

4. The method for making a metallic part according to claim 1 , wherein said cutting out is performed by cutting a plurality of notches on each side of the longitudinal edges of said at least one metallic foil or distributed along the length of said metallic foil at a given cut pitch, or both on each side of the longitudinal edges of said at least one metallic foil and distributed along the length of said metallic foil at a given cut pitch.

5. The method for making a metallic part according to claim 1 , wherein before said cutting out, said method comprises cutting out the at least one piece of flexible metallic foil from at least one metallic sheet with a thickness of less than 0.3 mm.

6. The method for making a metallic part according to claim 1 , wherein before said isostatic pressing, said method comprises stacking at least one second metallic coil on said first metallic coil placed on said shaping tool.

7. The method for making a metallic part according to claim 6 , wherein two metallic coils stacked in sequence during said stacking have cut pitches offset from each other.

8. The method for making a metallic part according to claim 1 , wherein said metallic part is a metallic reinforcement of a leading or trailing edge of a turbomachine blade or a metallic reinforcement of a propeller.

9. The method for making a metallic part according to claim 1 , wherein said shaping tool is a shaping template or the punch of an isostatic pressing tool or the die of said isostatic pressing tool.

10. The method for making a metallic part according to claim 1 , further comprising positioning the metallic part on a leading edge or a trailing edge of a blade.

Assignees

• Dambrine Bruno Jacques Gérard
• Godon Thierry
• Perroux Alain Robert Yves
• Snecma

Inventors

• Dambrine Bruno Jacques Gérard
• Godon Thierry
• Perroux Alain Robert Yves

Classifications

• B29C66/721

  Fibre-reinforced materials (B29C66/729 takes precedence) · CPC title

• C22F1/183

  of titanium or alloys based thereon · CPC title

• B29C66/53

  Joining single elements to tubular articles, hollow articles or bars · CPC title

• F04D29/324

  Blades · CPC title

• B21D39/031

  Joining superposed plates by locally deforming without slitting or piercing · CPC title