TEMISTh

27/01/2026

In metal additive manufacturing, final precision isn’t printed… it’s machined.

This is especially true for critical components produced in Inconel 718, like this heat exchanger featuring a threaded connection essential for sealing and system integration.
While 3D printing enables highly complex shapes, as-printed tolerances and surface roughness are not sufficient to ensure a perfect fit.
➡️ That’s why finish machining is absolutely essential.
Key reasons:
🔹 To achieve accurate and reliable thread dimensions.
🔹 To reach a surface finish that guarantees sealing performance.
🔹 To secure mechanical integrity and prevent leaks in demanding systems.
🔹 To ensure long-term durability, even under extreme operating conditions.
This level of performance comes from the combination of additive manufacturing + high‑precision machining, an essential duo to deliver functional, high‑value components.
👉 At TEMISTh, we integrate both capabilities to deliver ready‑to‑use, robust, and fully compliant thermal components.

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31/10/2024

Une nouvelle étape importante pour l’entreprise avec la prise de nouveaux locaux aujourd’hui et le début des travaux pour accueillir une machine d’impression 3D métallique.

18/04/2024

Today we were happy to welcome our customers with Stirweld to present our solution for thermal management using advanced manufacturing.

10/04/2024

Présentation de notre nouveau bébé en fabrication additive lors des APS meetings 2024 à Lyon.

Les échangeurs en fabrication additive pour le projet ont été testés à 450bars avec succès.

01/02/2024

Last day at Hyvolution Paris !

Today a focus on H2020 DESOLINATION project funded by the European Commission. This project aims to develop a rentable and innovative desalination process.

TEMISTh is in charge of developing heat exchangers using additive manufacturing. For us this HX gathers both production challenges and complex simulations of supercritical CO2 and molten salt.

31/01/2024

This morning at , a focus on TEACH project that aimed to study the potential of Additive Manufacturing for replacing printed circuits heat exchangers.

This project leaded by TEMISTh and co-funded by TotalEnergies and Technip showed that AM can substantially reduce the quantity of rare materials used.

28/08/2023

You have any issue on thermal management for and application ?

Come and visit us in at Energy&Mobility: Technology Systems and Value Chain conference !

Let's talk about heat transfer, fluid dynamics, simulation, design optimization and

Energy & Mobility Conference & Expo in Cleveland, Ohio | Sept 12-15, 2023 | Conference focused on the synthesis of energy and mobility and related technology, systems and value chain issues.

29/06/2023

Back from 2023 !

Innovatives aircrafts were presented to face

As usual, are key components for .

We were presents on Région Sud Provence-Alpes-Côte d'Azur booth with , Imprimante 3D - Volumic 3D, , SP3H, . On the exhibition, our solutions of produced with and founded interests for the

01/06/2023

Working on optimization needs to fully understand physics.

It's what we do at TEMISTh by comparing litterature results with simulations and implement parameters for a geometrical optimization.

Here an example of what we do for modeling coupled with flow in a heated tubes. The first picture shows theoretical behaviour of nucleation and buble flow. Next pictures show simulation results performed on + (Siemens PLM Software)