France's leading group in heat treatment and vacuum deposition

Recognized expertise in heat treatment and custom vacuum deposition since 1960.

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THERMI-LYON, a pioneer in contract heat treatment

THERMI-LYON was founded in 1960 by Mr Louis VILLARD.

At that time, contract heat treatment was virtually non-existent, as this activity was directly integrated into machine shops. This innovative vision of creating a contract heat treatment workshop earned us a pioneering reputation.

Since 1985, Mr Jean-Claude MONIER and then his son Florent MONIER have actively pursued the development of the THERMILYON group, with the aim of ensuring the company's long-term future in the service of our customers. A sustained policy of human and material investment is a strong leitmotiv.

This business is based on the dual skills of technology and service:
- Mastery of cutting-edge, innovative and environmentally-friendly technologies
- A network of production sites close to our customers for optimum service

Our history

The decade of expansion

In 1960, Louis Villard decided to take over the heat treatment business of ROCHET-SCHNEIDER, then in liquidation, and asked the PARTIOT company for a shareholding to start the THERMI-LYON adventure. Heat treatment was not yet taught in schools, and the fifteen or so employees learned on the job. In the 70s, THERMI-LYON forged strong links with a number of regional companies, including major customers such as BERLIET and RICHARD CONTINENTAL. THERMI-LYON quickly established itself as an expert in custom heat treatment.

A local ambition

Customer needs grew considerably, and Louis Villard perfected the company's reputation throughout much of France. Jean-Claude Monier, Louis Villard's son-in-law, joined the THERMI-LYON team in 1970 to assist his father-in-law with administrative matters. This year marked the company's first technological shift, with the integration of a vacuum furnace for the first time.

The desire to develop a local service, motivated by the first oil crisis, and to take on new challenges are important leitmotivs for the founder of THERMI-LYON.

In 1972, THERMI-LYON bought its first company, TREMPELEC, in the heart of the Arve Valley, which had become a major hub for the screw-cutting industry.

In 1977, THERMI-LOIRE was born, specializing in the processing of large parts (1.5 tons per load).

In 1984, INFRA-THERM near Grenoble joined the group, specializing in salt bath treatment and quenching of light alloys for sports and leisure parts.

New impetus for transition

At the turn of the year 85, Louis Villard retired, and after 15 years of experience, Jean-Claude Monier took over at the head of the company.

He decided to focus exclusively on heat treatment, in all its forms, in order to offer each customer the solution best suited to their needs.

Productivity increased, numerous investments were made to remodel workshops and measuring instruments improved quality.

THERMI-BUGEY in Martignat joined the group in 1987.

Towards a new era

With the acceleration of globalization, the Group is experiencing one of its most prolific periods in terms of acquisitions and business creation.

Concerned about its environmental impact, the Lyon-based SME pursued its quest for innovation in the search for cleaner equipment, and continued to invest in high-performance equipment: vacuum carburizing and controlled gas nitriding. In 1996, the THERMILYON Group decided to expand into P.V.D (Physical Vapor Deposition) and PA-C.V.D (PVD-assisted CVD deposition). In 1996, THERMI-PLATiN' was created to offer a complementary activity to heat treatment: vacuum deposition.

Global competence

3 major areas of development illustrate these years: 

- Development of the aerospace industry: THERMI-GARONNE is created in 2000, and the EN 9100 quality system is upgraded for the THERMI-LYON, THERMI-LOIRE and THERMI-GARONNE sites in 2006. In 2007, THERMI-GARONNE became the first French contract heat treating plant to achieve international NADCAP heat treating certification.

- International expansion: In 2003, THERMI-LYON set up its first plant outside France, in response to its customers' need for international expansion. THERMI-METALURGICA was born in Romania.

- The development of WC-C and then DLC tribological coatings: THERMI-LYON perfects the industrialization of new coatings that improve sliding and are also biocompatible. These enabled THERMI-PLATIN' to strengthen its position in the medical sector.

Innovating and investing for tomorrow

Florent Monier, grandson of Louis Villard, joins the management team and brings a new dynamic to the family SME. Building on its values and worldwide reputation, the company continues to invest in state-of-the-art equipment and R&D. By recruiting highly qualified staff, innovation is put at everyone's service. Continuous improvement in heat treatment and quality control, as well as investment in new technologies for the future, remain a priority area of development. For example, we have developed THERMI-SP, a dedicated treatment for stainless steels, which has opened up export markets for the first time.

portrait of Florent Monier, CEO of Groupe Thermilyon

    our vision

    OUR VOCATION

    The expertise of a metallurgy specialist at the service of mechanical engineering.

    Since 1960, Thermi-Lyon has built up recognized expertise in heat treatment and vacuum coating services.

    Thermi-Lyon, a competitive advantage for our partners :

    Our services have a direct impact on the performance, service life and operating reliability of mechanical parts.

    Our wide range of solutions enables us to offer our customers a complete proposal, based on objective advice.

    Our ambition is to remain a leader in our market and build long-term relationships with our partners.

    Our goal

    Jointly develop the mechanical part to be produced.

    The aim of heat treatment and vacuum deposition is to improve the performance of mechanical components, to produce parts with a longer service life, or simply to enable parts to function better.

    This makes it possible to manufacture parts that last longer and are lighter, generating savings in raw materials and energy for part production.

    By virtue of its usefulness, our service is in fact eco-responsible.

    We share a common goal: to increase the competitiveness of mechanical products by optimizing their performance in use and their production costs.

    Our organization

    Meeting the diverse needs of our customers.

    The THERMILYON group, with its global expertise in the field and its regional units, offers a wide range of treatments, coatings and their industrial development.

    Investments (15-20% of annual sales) in human and technological skills, backed up by a capacity for innovation and development, enable the group to remain one of the leaders in its field, serving your competitiveness.

    The specific nature of our customers' end markets has led us to set up a business organization for each of our sites.

    Our factories have all the certifications and quality approvals required for our customers' markets. Our working methods are also derived from our customers' businesses (project mode, risk approach, etc.).

    Most of our sites operate 24 hours a day, 7 days a week, to guarantee maximum capacity and responsiveness.

    Our certifications

    ISO 13485
    ISO 13485 certification logo

    ISO 13485 establishes the criteria for the quality management system of an organization providing medical devices and related services in compliance with customer requirements and applicable regulations.

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    ISO EN 9100

    EN 9100 certification guarantees the quality management system requirements of the ISO 9001 series, and specifies additional definitions and notes for the aerospace and defense industry.

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    IATF 16949
    logo IATF 16949 certification dedicated to the automotive industry

    The IATF 16949 standard, dedicated to the automotive sector, establishes criteria for quality management processes, encouraging continuous improvement, defect prevention and the reduction of non-conformities and scrap within the automotive supply chain.

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    NADCAP Heat Treating
    logo nadcap heat treating

    NADCAP is an accreditation program for aerospace and defense subcontractors, designed to ensure the quality and reliability of products and services. This accreditation focuses on the special processes employed in the manufacture, testing and maintenance of components and systems used in these industries. Within the THERMILYON Group, NADCAP applies only to the special heat treatment process.

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    ISO 9001

    The ISO 9001 standard, widely recognized throughout the world, helps organizations improve their performance by meeting quality management system requirements and demonstrating a commitment to customer satisfaction.

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    See all our certifications
    1960

    Year the THERMI-LYON Group was founded

    5000

    More than 5,000 customers in France and abroad

    32

    Millions of euros in sales

    20

    Millions of euros in human and technological investment over the past 4 years

    165

    employees

    100

    100% of our sites are certified

    Our locations

    Trempelec
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    Thermi-Loire
    • 143 Avenue Benoît Fourneyron 42160 ANDRéZIEUX-BOUTHéON
    • +33477555230
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    Thermi-Garonne
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    Thermi-Bugey
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    Infra-Therm
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    Thermi-Picardie
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    Thermi-Metalurgica
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    Thermi-Lyon
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    Thermi-Platin
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    Meet the thermilyon team

    Jean-Claude MONIER
    Chairman
    Florent MONIER
    Chairman Florent MONIER's LinkedIn account
    Bernard SALVI
    Marketing and Sales Department Bernard SALVI's LinkedIn account
    portrait pascal faure
    Pascal FAURE
    Chief Financial Officer
    Virginie Le Franc
    Human Resources Manager Virginie Le Franc's LinkedIn account
    Frédéric Deroche
    Maintenance and New Works Manager
    Stéphane Chomer
    Technical Manager
    Nicolas CAMUS
    IT Manager

      GROUPE Thermi Lyon employer brand

      Within the THERMILYON Group, we integrate our employees with in-depth training in materials processing and encourage exchanges with experts.
      We value human relations and collaboration, believing that personal interactions enrich our work.
      We promote open and constructive exchanges, sources of effective innovation.
      Our company is distinguished by constant growth and a commitment to continuous innovation.
      We develop our employees' skills, giving them greater autonomy and responsibility.
      We reduce our carbon footprint and improve working environments.
      Joining the THERMILYON Group means joining a passionate and dynamic team, proud of its family heritage and committed to excellence.

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