
Development and manufacturing of cooling and heating solutions for the light-metal die casting industry

Lethiguel
Lentilly (France)New on Amplifa
About Lethiguel
Lethiguel is a French company based in Lentilly near Lyon, specializing in thermal solutions for the light-metal and aluminum foundry industry. The company develops and manufactures die casting cooling systems based on jet cooling technology (product lines SpotCool Classic, Evolution and Performance) as well as aluminum heating stations of the Twiga line, holding furnaces of the Al Clean line and aluminum immersion heating elements Thermal Power®. The portfolio is complemented by the FlowMaster monitoring system for cooling circuits, water treatment solutions (Water Softener), mobile measuring devices for water quality testing (SpotCool Water Check), manifolds and core pins. The jet cooling technology was originally developed and patented by Ahresty Japan; Lethiguel, as a historic partner, distributes its systems in selected markets and has also developed its own range of closed cooling circuit machines. A team of 40 employees supports foundries worldwide, with the website available in French, English, German and Spanish.
- Site
- Lentilly
- Processes
- Jet cooling (cooling circuit system for die casting coolers), Cooling water pressure circuit 3–20 bar with injectors Ø 1.2–2.8 mm, flushing with compressed air, Twiga aluminum heating station (immersion heating system, optionally with degassing), Al Clean aluminum holding furnace (Thermal Power® immersion heater), Water treatment/water quality testing (SpotCool Water Check, water softener), Development and manufacture of cooling and heating solutions for die casting, Jet cooling systems (SpotCool Classic/Evolution/Performance), Aluminum heating stations (Twiga) and holding furnaces (Al Clean)
- Materials
- Aluminum, Jet Cooling, Water Treatment
- Certificates
- CE marking (SpotCool Water Check), ISO 9001
- Employees
- 40
- Industries
- Light-metal casting/die casting, Foundry industry, Aluminum foundries
- 01
Development and design
- 02
Manufacturing of cooling and heating systems
- 03
Assembly and commissioning
- 04
Water treatment and quality monitoring
- 05
Sales and after-sales service
Technologies and Systems
Aluminum
Material for Thermal Power® immersion heating elements, Twiga aluminum heating stations and Al Clean holding furnaces.
Jet Cooling
Die casting cooling system with pressurized water circuits of 3 to 20 bar through injectors with Ø 1.2 to 2.8 mm in core pins.
Water Treatment
Water Softener and SpotCool Water Check for monitoring and treating cooling water quality.
Location

Lentilly
FRHeadquarters, development and manufacturing
- Materials
- Aluminum
- SpotCool Classic (jet cooling unit)
- SpotCool Evolution (jet cooling unit)
- SpotCool Performance (jet cooling unit)
- Twiga (aluminum heating station)
- Al Clean (aluminum holding furnace)
- Thermal Power® (aluminum immersion heater)
- FlowMaster (flow monitoring system)
- SpotCool Water Check (mobile water measuring unit)
- Water Softener (water softener)
Products and Assemblies












Inside the production


Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Jet cooling (cooling circuit system for die casting coolers)Casting | – | – | – | – | Aluminum |
| Cooling water pressure circuit 3–20 bar with injectors Ø 1.2–2.8 mm, flushing with compressed airCasting | – | – | – | – | Aluminum |
| Twiga aluminum heating station (immersion heating system, optionally with degassing)Casting | – | – | – | – | Aluminum |
| Al Clean aluminum holding furnace (Thermal Power® immersion heater)Casting | – | – | – | – | Aluminum |
| Water treatment/water quality testing (SpotCool Water Check, water softener)Testing | – | – | – | – | – |
9 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Aluminum heating station | Lethiguel Twiga | – | – | – | Lentilly, France |
| Aluminum holding furnace | Lethiguel Al Clean | – | – | – | Lentilly, France |
| Die casting cooling unit (jet cooling) | Lethiguel SpotCool Classic | – | – | – | Lentilly, France |
| Die casting cooling unit (jet cooling) | Lethiguel SpotCool Evolution | – | – | – | Lentilly, France |
| Die casting cooling unit (jet cooling) | Lethiguel SpotCool Performance | – | – | – | Lentilly, France |
| Flow monitoring system | Lethiguel FlowMaster | – | – | – | Lentilly, France |
| Mobile water measuring unit | Lethiguel SpotCool Water Check | – | – | – | Lentilly, France |
| Water softener | Lethiguel Water Softener | – | – | – | Lentilly, France |
| Aluminum immersion heater | Lethiguel Thermal Power® | – | – | – | Lentilly, France |
Additional services
Reference customers
Quality
The water quality of the cooling circuits is tested with the mobile, CE-certified SpotCool Water Check, which is compatible with all SpotCool conductivity sensors. The FlowMaster system monitors the flow at each cooling spot in real time and enables preventive or predictive maintenance.
| Evidence | Lentilly |
|---|---|
| CE marking (SpotCool Water Check) | |
| ISO 9001 |