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Vacuum Furnaces: Precision in a Controlled Environment

Surface Combustion revolutionizes material processing with its cutting-edge Vacuum Furnaces, designed for operations where the absence of oxygen is crucial. Our vacuum furnaces remove air and potential contaminants, preventing oxidation, decarburization, and ensuring the highest quality of finished products. Ideal for sensitive metals and alloys, these furnaces are the cornerstone for industries demanding precision, such as aerospace, automotive, and tool & die.


Presenting Surface Combustion’s Vacuum Furnace Options

Surface® Combustion Power Convection® (PC) Vacuum

Power Convection: The Rugged Industry Workhorse

BEST FOR: Tool Steels, Stainless Steels, Fuel system components, Medical, Electronics and Instrumentation

  • Robust Construction & Safety: Engineered for durability and reduced loading risks.
  • Efficient Heat Transfer: Rapid, uniform heat transfer and efficient convection cooling for small and large workpieces.
  • Versatile & Customizable: Available in 2-6-bar and up to 10-bar designs, with rugged all graphite hot zones.
  • Vacuum Level: 2, 6, 10 bar
  • Temperature Range: 1000°F to 2400°F
  • Ideal Industries: Automotive, Tooling, Molds and Dies, Medical

VacuDraw® High Performance Vacuum Purged Temper Furnace

VacuDraw Tempering: Industry’s First Low Temperature, Cost-Effective Solution

BEST FOR: Copper, Tool Steels, Stainless Steels, Alloy Steels

  • Cost Savings: More profitable cycles with significant cost advantages.
  • Improved Efficiency: Convection heating slashes floor-to-floor time, optimizing production.
  • Enhanced Flexibility: Supports various atmospheres, processes bright loads without a diffusion pump.
  • Vacuum Level: 20 microns. Heating and cooling up to 2 Bar
  • Temperature Range: 350°F to 1400°F
  • Ideal Industries: Automotive, Commercial, Tool & Die, Agriculture, Off Road, Aerospace, Electrical Components

Cloverleaf Vacuum: Flexibility Meets Advanced Technology

BEST FOR: All materials including carburizing grades, hardening grades requiring oil quenching or gas quenching

  • Versatile Heating Options: Gas-fired or electrically heated chambers cater to cost effective heating sources.
  • Advanced Automation: Precision control with central turret for streamlined material handling.
  • Reliable & Maintainable: Isolated maintenance capability ensures uninterrupted operation. Chambers can be opened to atmosphere for inspections or servicing while the system is still in operation.
  • Vacuum Level: 20 Microns, Gas Quench Pressure up to 20 Bar or Oil Quench
  • Temperature Range: 1000°F to 1800°F for Carb Chamber. 1000°F to 2400°F for High Purity High Temperature Chamber
  • Ideal Industries: Agriculture, Off Road, Racing and High Performance, Tool and Die

Multi-Chamber: Engineered for Reliability and Efficiency

BEST FOR: Tool steels, automotive fuel systems, stainless steels, low temperature vacuum processing of hard to keep bright stainless steels, including all materials requiring oil or gas quenching

  • Hot Zone Integrity: Maximum hot zone integrity because the heating chamber stays under vacuum and at temperature at all times. Outside humidity and contamination never enters the hot zone while processing.
  • Flexible Quenching: Gas or oil quenching capabilities meet diverse vacuum processing requirements.
  • Enhanced Cooling: Superior cooling performance for increased productivity, higher part hardness, and faster turnaround
  • Versatility in Application: Engineering for heavy loads and high production lots.
  • Direct-Fired Solutions: High velocity burners for fast, uniform heating.
  • Vacuum Level: 20 microns, Gas Quench Pressure up to 2 Bar or Oil Quench
  • Temperature Range: 1000°F to 2400°F
  • Ideal Industries: Automotive, Aerospace, Oil & Gas, Tool & Die

Vacuum Allcase: Industry’s Leading Batch Integral Quench Furnace

BEST FOR: Through Hardening, Carburizing, Carbonitriding, Annealing, Ferritic Nitrocarburizing


  • Versatile Processing: Handles multiple heat treating processes in one furnace.
  • Advanced Quenching: Automatic transfers to various quenching media under protective atmospheres to prevent oxidation.
  • Enhanced Features: Larger capacities, improved insulation, and advanced control systems.
  • Automation and Compatibility: Equipped for automated processing with adaptable batch systems for diverse workpieces.
  • Vacuum Level: 20 Microns, Oil Quench Oil (No Pressure or Bar)
  • Temperature Range: 1000°F to 1950°F
  • Ideal Industries: Automotive

VacuDraw® High Performance Vacuum Purged Temper Furnace

Softvac Vacuum Furnace: Pioneering Hot Wall Vacuum Technology

BEST FOR: Annealing, Hardening, Low Pressure Carburizing, Stress Relieving

  • Enhanced Efficiency: Features hot wall technology to reduce thermal loss and improve temperature and case depth uniformity.
  • High-Temperature Capability: Reaches up to 1975°F, supporting high-temperature applications with advanced temperature control.
  • Flexible Atmospheres: Operates with Vacuum, Nitrogen, Nitrogen/Hydrogen, or Air, catering to various industrial needs.
  • Multi-Chamber Options: Available in single, 2, 3, and 4 chamber configurations to fit multiple-stage processing requirements.
  • Vacuum Level: 20 Microns, Gas Quench 1.5 Bar
  • Temperature Range: 1000°F to 1975°F
  • Ideal Industries: Automotive, Research and Development

Vacuum Pit Furnace: Custom and Standard Solutions for Diverse Industrial Needs

BEST FOR: Annealing, Hardening, Low Pressure Carburizing, Stress Relieving

  • Customizable Designs: Offers both standard and engineered pit furnaces tailored to specific industrial requirements.
  • Capacity and Size: Standard models handle up to 30,000 lbs., with dimensions ranging from 24 to 120 inches in diameter and 36 to 144 inches deep.
  • Versatile Applications: Suitable for large workpieces and small parts in baskets.
  • Advanced Features: Equipped with proprietary high-temperature fans for efficient heat distribution.
  • Robust and Reliable: Built with heavy plate casings and steel plate lids to enhance durability and operational efficiency.
  • Complete System Solutions: Includes companion equipment such as washers, temper furnaces, and quenches for a comprehensive heat treat line.
  • Vacuum Level: 20 Microns, Gas Quench Pressure 2 bar
  • Temperature Range: 1000°F to 2400°F
  • Ideal Industries: Aerospace, Space Exploration, Aeronautical, Energy, and Oil

Carbottom Furnace

BEST FOR: Annealing, Hardening, Tempering, Stress Relieving, Heat Treating Large Castings and Forgings

  • Advanced Loading Mechanism: Facilitates easy and seamless loading and unloading, perfect for heavy and large batch operations.
  • High-Temperature Capability: Operates across a broad temperature range from 1000°F to 2400°F, accommodating various materials and processes.
  • Atmosphere Control: Specializes in precise atmosphere conditions using options like RX® and DX® gases and various nitrogen mixtures for optimal material properties.
  • Energy Efficiency: Incorporates recuperative technology, improving efficiency by up to 29%, reducing both operational costs and environmental impact.
  • Durability and Longevity: Built with robust materials for durability, with many units proven to operate effectively for over fifty years.
  • Vacuum Level: 50 microns, Gas Quench to 1 bar
  • Temperature Range: 1000°F to 2400°F
  • Ideal Industries: Aerospace, Automotive, Heavy Machinery, and Rail

Choose Excellence, Choose Surface Combustion

Surface Combustion stands at the forefront of thermal processing technology, offering a comprehensive range of vacuum and atmosphere furnaces to meet and exceed your production needs. Whether you require the precision of vacuum environments or the versatility of atmosphere processing, our equipment is designed to deliver unparalleled quality, efficiency, and reliability.

Discover the future of material processing with Surface Combustion. Contact us today to explore how our Vacuum Furnace options will elevate your operations to new heights of excellence.

Ready to Get Started?

Please call us when you are ready to discuss a new furnace or maintain, upgrade or replace your furnace or any part of your furnace. At Surface, we look forward to helping you with any thermal processing needs.

Call Surface with the following information ready to initiate your furnace solution.

  • furnace cyclecycle
  • furnace operationoperation
  • hours per yearhours per year
  • available spaceavailable space
  • operating temperature rangeoperating temperature range
  • heat sourceheat source

Give Us a Call

(800) 537-8980