ROHDE Inert Gas Furnaces

What ROHDE Inert Gas Furnaces does

ROHDE Schutzgasöfen GmbH, doing business as ROHDE Inert Gas Furnaces, is a second-generation family-owned German manufacturer of thermochemical heat treatment systems, headquartered in Hanau near Frankfurt am Main. The company designs and builds bespoke protective-gas and retort furnaces — retort shaft furnaces, retort chamber furnaces, retort cover (Hauben) furnaces, and custom special systems — capable of treating charge weights from a few kilograms to several hundred tons. All engineering, mechanical and electrical manufacturing, assembly, and commissioning are performed in-house in Germany, with the company explicitly rejecting low-cost country sourcing under its "Manufactured in Germany" positioning. Its differentiation is built on proprietary process technologies, including the R-ox-free low-pressure acetylene carburizing process, the OnlineDiffusion process automation software, the KN/KC/KO nitriding control system, in-house gas regulation stands, switchgear, and a Kompensator component that has become an industry standard for shaft furnaces.

ROHDE sells high-value, project-based capital equipment to industrial manufacturers and commercial heat treaters (Lohnhärtereien) in Germany, Europe, and internationally, with quote-based pricing and no public list pricing. Revenue is generated through one-time equipment sales, ongoing aftermarket services, remote diagnostics, spare parts, and a growing modernization business that upgrades both ROHDE-built and third-party furnaces with its process automation and gas control products. Direct field sales covers Germany and Europe, while North, Central and South America and Canada are served via a wholly-owned US subsidiary (Rohdetherm Inc., founded May 2022 in Avilla, Indiana) and a manufacturing partnership with McLaughlin Furnace Group; China is served through a cooperation agreement with Shanghai Advanced Metallurgical Technology Corporation (上海先越冶金技术股份有限公司). Process control is built on Siemens SIMATIC S7 with optional Siemens touchpanel visualization, integrated into broader process control systems with remote maintenance capability.

The company is led by founder-owner Dipl.-Ing. Jörn Rohde, has 11–50 employees, and has accumulated multiple AWT Innovation Certificates (2010–2017) and the Großer Preis des Mittelstandes 2015 award. Ownership is concentrated in the Rohde family with no disclosed institutional investors, and a charitable entity (Rohde-Kids gUG) operates a company daycare. Marketing and lead generation rely on technical credibility, the corporate website, industry conferences (HK series), trade publications (The Monty, HärtereiTechnologie), and partnerships with industry associations including AWT, IVH, and IWT Bremen.

Name

ROHDE Inert Gas Furnaces

Legal name

ROHDE Schutzgasöfen GmbH

Website

https://rohdetherm.de

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

11–50 employees

Short description

ROHDE Inert Gas Furnaces is a second-generation German family-owned manufacturer in Hanau that designs and builds bespoke thermochemical heat treatment furnaces and proprietary process automation for industrial manufacturers and commercial heat treaters worldwide.

Ownership category

akta.pro rank

Product category

Industrial Heat Treatment Furnaces

NAICS

Industrial Process Furnace and Oven Manufacturing (333994), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)

SIC

Industrial Process Furnaces & Ovens (3567)

akta.pro primary industry

Boilers, Furnaces & Process Heating Equipment (IMAHAKAD)

akta.pro secondary industry

On-Site Gas Generation Systems (IMAEACAJ)

Keywords

• Industrial heat treatment furnaces
• Protective gas atmosphere systems
• Gas carburizing equipment
• Retort furnace manufacturing
• Thermochemical heat treatment

Headquarters

HQ city

Hanau

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Custom Industrial Furnace Manufacturing: ROHDE designs, engineers, and manufactures bespoke industrial heat treatment furnace systems (retort shaft furnaces, retort chamber furnaces, hood furnaces, special/custom systems) to customer specifications. Revenue is generated through one-time project-based sales of capital equipment, with charge weights ranging from a few kilograms to several hundred tons. Pricing is quote-based given the highly customized nature of each order.
2. Aftermarket Services, Spare Parts & Maintenance: Ongoing revenue from field service, remote diagnostics (Fernwartung), on-site troubleshooting and repair, and supply of wear and spare parts (many stocked). The company emphasizes that service forms the basis for long-term customer relationships and that a project's end is the beginning of the customer relationship.
3. Process Automation Upgrades for Third-Party Furnaces: ROHDE offers process automation upgrades (OnlineDiffusion, nitriding systems, gas regulation stands, process control) for both ROHDE-built and competitor-built furnaces, generating upgrade and modernization revenue.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

ROHDE Schutzgasöfen GmbH designs, engineers, and manufactures thermochemical heat treatment furnace systems operating under protective gas atmosphere, including retort shaft furnaces, retort chamber furnaces, retort cover (hood) furnaces, custom special systems, and salt-recovery evaporator plants. The company handles the complete project lifecycle internally — bespoke planning, in-house mechanical and electrical manufacturing, on-site assembly and commissioning, and after-sales service with remote diagnostics — complemented by proprietary process automation software (OnlineDiffusion), nitriding control systems, gas regulation stands, and the R-ox-free low-pressure gas carburizing process.

Product overview

ROHDE Schutzgasöfen GmbH is a second-generation family-owned industrial heat treatment furnace manufacturer based in Hanau, Germany. The company produces thermochemical heat treatment systems under protective gas atmosphere and with retort design. The product portfolio includes Retortenschachtöfen (retort shaft furnaces), Retortenkammeröfen (retort chamber furnaces), Haubenöfen (cover furnaces), and Verdampferanlagen (evaporator systems) as core furnace products, complemented by process automation modules (Onlinediffusion, Nitriersystem, Prozesssteuerung, Schaltanlagen, Gasregelstände), the R-ox-free acetylene-based carburizing technology, and accessories/spare parts. The company offers complete solutions from a single source including planning, construction, assembly, commissioning, and maintenance services, with all manufacturing taking place in Germany (Manufactured in Germany).

Differentiator

Problem solved

Functional benefit

Brands

• R-ox-free: A proprietary low-pressure carburizing process that enables hardening of components up to large CHD without edge zone damage: no randoxidation, no manganese effusion, no carbide precipitations.

Products and services

• Retort Shaft Furnaces (Retortenschachtöfen) Industrial batch-type shaft furnaces with protective gas atmosphere and retort design for thermochemical heat treatment. Charge weights range from a few kilograms to several hundred tons. Sold to industrial manufacturers and commercial heat treaters as bespoke capital equipment.
• Retort Chamber Furnaces (Retortenkammeröfen) Chamber-type furnaces with protective gas atmosphere and retort design used for daily heat treatment in toll hardening operations, process development, and high-technology manufacturing. Available in standard and custom configurations.
• Retort Cover Furnaces (Haubenöfen) Cover-type retort furnaces for high loadings and temperatures, deployed in facilities without pits suitable for shaft furnaces. Installed on the factory floor and loaded using overhead conveyor vehicles or overhead cranes (with optional movable bases or swivel covers).
• Evaporator Systems (Verdampferanlagen, VH Series) VH series evaporator plants for salt bath quenching that recover quench salt and simultaneously dispose of wash water, enabling reuse of cleaned quench salt, eliminating disposal costs, and supporting environmental compliance.
• Custom Special Systems (Sonderanlagen) Bespoke furnace systems engineered for customers whose applications fall outside ROHDE's standard product categories, tailored to specific production requirements and component geometries.
• R-ox-free Low-Pressure Gas Carburizing Process Proprietary normal/low-pressure carburizing process using acetylene that enables components to be hardened to large case hardening depths (CHD) without surface layer damage — no edge oxidation, no manganese effusion, no carbide precipitations — and can eliminate the need for final hard machining. Sold as a process capability integrated with ROHDE furnace systems for industrial manufacturers and commercial heat treaters.
• Process Automation Suite (OnlineDiffusion, Nitriding System, Process Control, Switchgear, Gas Control Stations) Integrated process automation package including the proprietary OnlineDiffusion software for gas carburizing and carbonitriding, the KN/KC/KO nitriding control system, SIMATIC S7-based process control with optional Siemens touchpanel visualization, in-house manufactured switchgear systems (Schaltanlagen) and gas regulation stands (Gasregelstände). Offered for new ROHDE furnaces and as modernization upgrades for third-party furnace systems.
• Spare Parts and Accessories (Zubehör) Replacement and wear parts for industrial heat treatment systems, including welded fan wheels, seals, touchpanels, PC systems, and lambda probe electronics, with many parts available from stock. Sold to support both ROHDE-built and existing third-party equipment.
• Field Service, Remote Diagnostics and Maintenance Comprehensive after-sales service including on-site troubleshooting and repair, remote diagnostics (Fernwartung), preventative maintenance, and continuous improvement of assemblies during maintenance work to keep equipment at the state of the art for years. Provided worldwide to ROHDE furnace customers and owners of legacy equipment.

Quantifiable outcome

• Components up to large case depths (CHD) can be hardened without surface layer damage: no edge oxidation, no manganese effusion, no carbide precipitation.
• +4 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature7 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• McLaughlin Furnace GroupcoreChannel Partner/ Reseller/ Distributor · 1 May 2022ROHDE partnered with McLaughlin Furnace Group in May 2022 upon founding Rohdetherm Inc. in the USA. McLaughlin builds ROHDE furnaces in the USA and provides maintenance and service for these systems in the North, Central, and South American markets and Canada. This partnership enables local manufacturing and service for the American market.
• Shanghai Advanced Metallurgical Technology Corporation (上海先越冶金技术股份有限公司)coreChannel Partner/ Reseller/ DistributorROHDE's cooperation partner for the China market, helping serve Chinese customers with ROHDE heat treatment systems.
• Arbeitsgemeinschaft Werkstofftechnik (AWT)minorStrategic or Co-development PartnerROHDE works with AWT as part of its industry network, and has received AWT Innovation Certificates over multiple years.
• Stiftung Institut für Werkstofftechnik Bremen (IWT Bremen)minorStrategic or Co-development PartnerROHDE collaborates with the IWT Bremen institute on research and development in heat treatment technology.
• Universities and University InstitutesminorStrategic or Co-development PartnerROHDE has collaborated for years with universities and university institutes, leveraging synergies in research and development.
• Bundesministerium für Wirtschaft und Technologie (BMWi)minorStrategic or Co-development PartnerROHDE is part of the BMWi's network, likely relating to R&D support or public funding programs for SMEs.
• Industrieverband Härtetechnik (IVH)minorStrategic or Co-development PartnerROHDE is a member of the Industrial Association for Heat Treatment Technology, part of its industry network.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Ipsen International: Global manufacturer of industrial heat treatment furnaces (atmosphere and vacuum) serving commercial heat treaters and OEMs with custom engineered solutions. Closest direct competitor to ROHDE in thermochemical and protective-gas-atmosphere furnace systems.
• SECO/WARWICK: Poland-headquartered group producing atmosphere and vacuum heat treatment furnaces for automotive, aerospace, and commercial heat-treating markets. Comparable in offering custom heat-treatment capital equipment with global sales.
• ALD Vacuum Technologies (Ametek): Manufacturer of vacuum and controlled-atmosphere furnaces for heat treatment and metallurgical processing. Overlaps with ROHDE in atmosphere heat treatment and specialized furnace technology.
• Aichelin Group: Austrian/German manufacturer of industrial heat treatment furnaces and equipment for automotive and industrial customers. Direct comparable in atmosphere furnace systems and integrated heat treatment lines.
• ECM Technologies: French manufacturer of vacuum and atmosphere furnaces for heat treatment, brazing, and sintering. Comparable in custom engineered heat-treatment equipment with similar target customers.
• PVA TePla: German manufacturer of vacuum and high-temperature furnace systems for heat treatment, crystal growing, and plasma processing. Overlaps with ROHDE in specialty industrial furnace technology and German Mittelstand engineering heritage.
• BMI Fours Industriels: French designer and manufacturer of industrial furnaces for heat treatment, forging, and steelmaking. Comparable in custom-engineered furnace systems serving industrial customers.
• Mahler PVS (IHI Group): German manufacturer of heat treatment and brazing furnace systems. Direct overlap with ROHDE in protective gas atmosphere furnaces and heat treatment process technology.

Broad incumbents

• Inductotherm Group: Large multinational manufacturer of thermal processing equipment including induction melting and heat treatment systems. Broader portfolio than ROHDE but overlaps in industrial thermal processing for metals.
• Tenova (Techint Group): Multinational industrial solutions provider with heat treatment and surface treatment furnace offerings. Broader scope than ROHDE, but overlaps in metals thermal processing equipment for industrial customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/1660497887591071

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ROHDE Inert Gas Furnaces