Tooling for supporting metal parts during heat treatment

• US 9,903,656 B2
• Filed: 03/22/2013
• Issued: 02/27/2018
• Est. Priority Date: 03/23/2012
• Status: Active Grant

• Current Assignee: ArianeGroup SAS
• Original Assignee: Airbus Safran Launchers SAS (ArianeGroup SAS)
• Inventors: Guichard, Frdric, Maumus, Jean-Pierre
• Primary Examiner(s): Herzfeld, Nathaniel
• Application Number:
  US13/849,106
• Publication Number:
  US 20130252191A1
• Time in Patent Office: 1,803 Days
• Field of Search: 432253, 432 9, 432121, 432126, 432136, 266274, 269 9, 269289 MR, 269266
• CPC Class Codes: C21D 1/673 for die quenching
• CPC Class Codes: C21D 9/0025 Supports; Baskets; Containers; Covers
• CPC Class Codes: C21D 9/0068 for particular articles not mentioned below
• CPC Class Codes: F27D 5/0006 Composite supporting structures

Abstract

A support tooling for supporting at least one metal part that is to be subjected to heat treatment or shaped while hot, the tooling including: a stationary support structure presenting a determined shape that corresponds to the general shape of each metal part that is to be supported; first holder elements arranged on one side of each part; second holder elements arranged on the other side of each part; and at least one spring type resilient element placed between the support structure and each first or second holder element so as to hold the part throughout the duration of heat treatment. The support structure, the first and second holder elements and the resilient element(s) are made of thermostructural composite material.

Claims

1. Support tooling for supporting at least one metal part that is to be subjected to heat treatment or shaped while hot, said tooling comprising:

a stationary support structure presenting a determined shape that corresponds to the general shape of each metal part that is to be supported;

first holder elements arranged along and against one side of each metal part that is to be supported;

second holder elements arranged along and against the other side of each metal part that is to be supported, the one side of the metal part being opposite the other side of the metal part; and

at least one spring type resilient element placed between the support structure and each first holder element or between the support structure and each second holder element so as to exert a resilient holding force on each first holder element and on the metal part or on each second holder element and on the metal part to hold the metal part throughout the duration of heat treatment;

the support structure, the first and second holder elements and the at least one spring type resilient element being made of thermostructural composite material,

wherein the support tooling includes a plurality of pairs of jaws placed on either side of the metal part, each jaw being slidably mounted on the support structure so that the jaw is slidable along a longitudinal direction of the support structure to accompany a movement of the metal part along the longitudinal direction during the heat treatment, the longitudinal direction being different from a direction along which the resilient holding force is exerted.

2. Tooling according to claim 1, wherein each jaw is provided with at least one guide each co-operating with a respective slideway formed in the support structure.

3. Tooling according to claim 1, wherein each jaw has an inside face for coming into contact with a portion of the metal part, said face presenting a shape corresponding to the geometrical configuration of said portion of the part.

4. Tooling according to claim 1, wherein the support structure presents a housing including at least a first portion extending in a first plane, and a second portion extending in a second plane forming an angle relative to the first plane.

5. Tooling according to claim 1, wherein the support structure presents a housing extending in a first plane and wherein it includes at least a portion provided with angular wedges arranged between one or more pairs of jaws of the plurality of pair of jaws and the side walls of the support structure in such a manner that the portion of the housing that is present between the angular wedges extends in a second plane forming an angle with the first plane.

6. Tooling according to claim 1, wherein the support structure, the first and second holder elements, and each spring type resilient element are made of carbon/carbon composite material or of ceramic matrix composite material.

7. Tooling according to claim 1, wherein each spring type resilient element presents predetermined stiffness when cold.

8. A heat treatment installation comprising an oven and one or more pieces of support tooling according to claim 1 placed inside the oven.

9. Tooling according to claim 1, wherein the spring type resilient element is made up of two spring blades.

10. Tooling according to claim 2, wherein the slideway is an oblong hole.

11. Tooling according to claim 1, wherein at least one of the first holder elements is in contact with at least one of the second holder elements when the metal part is supported by the stationary support structure.

12. Tooling according to claim 1, wherein the plurality of pairs of jaws correspond to all or some of said first and second holder elements.

13. Tooling according to claim 1, wherein the movement is due to expansion or contraction of the metal part during heat treatment.

14. Tooling according to claim 1, wherein the jaw is slidable along the longitudinal direction during the heat treatment without exerting a stress on the metal part.

15. Tooling according to claim 1, wherein the jaw is slidable along the longitudinal direction between a first position corresponding to a position of the jaw before performing the heat treatment and a second position corresponding to a position of the jaw when the metal part expands due to the heat treatment.

16. Tooling according to claim 1, wherein the jaw includes a guide that is slidable along the longitudinal direction in an oblong hole.

17. Tooling according to claim 1, wherein the metal part includes a first end portion and a second end portion that is opposite the first end portion, wherein the first holder elements are arranged along said one side of the metal part from said first end portion to said second end portion, and wherein the second holder elements are arranged along said other side of the metal part from said first end portion to said second end portion.