Centorr Vacuum Industries
Manufactures vacuum sintering furnaces (Sintervac AM™, Workhorse AM™) for post-processing metal 3D printed parts produced via binder jetting and bound metal deposition, enabling debinding and sintering in controlled vacuum environments.
- CEO / Founder
- William Nareski
- Team Size
- 11-50
- Stage
- Active
- Total Funding
- $1.3M
- Latest Round
- Bootstrapped
Technology & Products
Key Products
Centorr Vacuum Industries offers a diverse line of vacuum furnaces, including standardized designs and custom-engineered solutions for metals, ceramics, and advanced materials. Their product portfolio includes production, laboratory, and continuous vacuum furnaces, as well as controlled atmosphere furnace equipment. They have also launched Sintervac AM and Workhorse AM furnace lines specifically for additive manufacturing processes.
Technological Advantage
CLAIMED: Sweepgas™ patented system enables active gas sweeping during debinding at both partial pressure and positive pressure (Ar, N₂, forming gas) in a single unit — claimed unique dual-mode capability. CLAIMED: Experience with 100+ binder systems (company marketing states '300+ binder types'). VERIFIED: First Sintervac AM™ shipped July 2019 to a leading AM firm (press release); 7,000+ global installed units (70th anniversary coverage, 2024). DEFENSIBLE: Sweepgas™ is trademarked/patented (original 1970s patent expired but accumulated trade know-how and process recipes represent defensible switching costs); 70-year institutional knowledge base is not easily replicable. Custom HMI and CVI T/P trap-over-pot design are proprietary. REPLICABLE risk: Core furnace hardware (hot zones, vacuum pumps) is commoditizable; moat depends on process expertise and service relationships.
Differentiation
Value Proposition
Purpose-built vacuum and atmosphere sintering furnaces designed specifically for AM post-processing workflows, enabling densification of metal binder-jetted and metal FDM parts to near-full density.
How They Differentiate
vs. Elnik Systems (HP Metal Jet partner): Centorr offers dual-mode debind+sinter in one cycle vs. Elnik's separate debind oven approach, eliminating inter-process handling of fragile green parts; Centorr's Sweepgas™ active gas management vs. Elnik's static atmosphere. vs. Ipsen (vacuum heat treat specialist): Ipsen focuses on heat treatment of already-sintered parts; Centorr's Sintervac AM handles the combined debind+sinter cycle with binder-specific trap systems designed for binder jetting offgassing chemistry that Ipsen does not natively address. vs. generic industrial furnace suppliers (Abbott, Solar Atmospheres): Centorr's 100+ binder system experience and 7,000+ installed base in MIM/WC markets provides process recipes directly applicable to AM binder chemistries, vs. competitors without MIM heritage requiring customers to develop processes from scratch. Sintervac AM available in 5 sizes (2–16 ft³) enabling lab-to-production scaling within the same product family.
Market & Competition
Target Customers
Metal AM users requiring post-processing sintering equipment, particularly binder jetting and metal FDM operators in industrial and aerospace sectors.
Industry Verticals
Industrial; Aerospace/Defense; Automotive
Competitors
Elnik Systems; CM Furnaces; Ipsen
Growth & Milestones
Growth Metrics
7,000+ vacuum furnace units installed worldwide as of 2024 (up from ~6,500 at 60th anniversary in 2014); estimated annual revenue ~$10.6M (RocketReach 2026); ~31-45 employees; private company with no disclosed revenue growth figures
Major Milestones
1954: Vacuum Industries founded in Somerville, MA; 1962: Centorr Furnaces founded in Suncook, NH; early 1970s: Sweepgas™ binder removal system developed for tungsten carbide industry; early 1980s: Injectavac™ pioneered for MIM 1st and 2nd stage binder removal; 1989: Vacuum Industries and Centorr Furnaces merged into Nashua, NH facility; 1991: Formally incorporated as Centorr Vacuum Industries, Inc.; 1992: Acquired by LOI Group GmbH (Germany); 1997: Management buyout — becomes 100% management-owned private LLC under William Nareski; 2014: MIM-Vac M900 furnished to FloMet LLC/ARCMIM; ~2018: Launches Sintervac AM™ and Workhorse AM™ product lines for AM post-processing market; July 2019: First Sintervac AM™ shipped to leading binder jetting AM firm; August 2021: Multiple furnace orders secured for MIM and 3D printing markets; 2024: Celebrates 70th anniversary; 7,000+ units installed worldwide
Notable Customers
FloMet LLC (ARCMIM) — MIM-Vac M900 debind/sinter furnace (2014); unnamed leading binder jetting AM firm — first Sintervac AM™ shipment (July 2019)