公开(公告)号：US20250019789A1

公开(公告)日：2025-01-16

申请号：US18713458

申请日：2022-11-30

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： Denis SORNIN

IPC: C21D9/50 ,  B23K9/025 ,  C21D6/00 ,  C21D9/46

Abstract: A method for manufacturing a double-layer heat-exchange wall including first and second metal layers includes the following successive steps: (i) providing a first metal sheet forming the first layer, a second metal sheet forming the second layer, and a leaf of iron Fe0 having a thickness of between 10 μm and 100 μm; (ii) assembling the first and second metal sheets and the leaf of iron Fe0, the leaf interposed between the first and second metal sheets; (iii) mechanical pressing of the assembly at a minimum pressure of 1 MPa; (iv) peripheral welding of the pressed assembly; and (v) heat treatment of the welded assembly, the heat treatment being implemented by hot isostatic pressing conducted at a temperature of between 800° C. and 1200° C., at a pressure of between 108 Pa and 2.108 Pa, for a period of between 1 hour and 3 hours.

公开(公告)号：US20240399440A1

公开(公告)日：2024-12-05

申请号：US18679687

申请日：2024-05-31

Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Inventor： Denis SORNIN

IPC: B21D53/06

Abstract: A method for manufacturing a double-wall heat-exchanger tube including an external tube and an internal tube, these tubes being metallic, cylindrical and coaxial. This method includes providing a first tube having an inside diameter d1int and an outside diameter d1ext, this first tube being intended to form the external tube, a second tube having an inside diameter dint and an outside diameter d2ext, this second tube being intended to form the internal tube, and a cylindrical coaxial tubular leaf made from Fe0 having an inside diameter dint and an outside diameter dext, such that 0.15 mm≤(d1int−dext)≤0.25 mm, 0.15 mm≤(dint−d2ext)≤0.25 mm, and 10 μm≤(dext−dint)≤200 μm.