Process Hot Air Heaters for Industrial Applications
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MHI manufactures a comprehensive line of process heating tools for temperatures from low to very high, up to 1500°C (~2700°F). MHI Airtorches™ are Patented.
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Models:
For help choosing the right Airtorch® for your application, click here for the Selection Guide.
New Variable inlet temperatures up to 800°C and recirculators for energy efficiency.
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Models (1200°C) (new higher temperature ) controls required |
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 Process Gas Heater
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Click for detailed application page.Applications:
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Maximum Temperature |
Key Selection Feature |
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General specifications: |
1200°C | In-line or Fan | 0.5 to 60 kW |
https://mhi-inc.com/airtorch-contact-form/
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High-Pressure Models: GTA (1200°C) Models; controls required |
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 Copyright MHI Inc. USA
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Application:
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Maximum Temperature |
Key Selection Feature |
Typical Power Range |
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General specifications: |
850-1200°C | Pressure Vessel Model | 6 to 400kW |
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Application:
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Maximum Temperature |
Key Selection Feature |
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General specifications: |
LTA1000C | In-line | 1 to 60kW |
| VTA900C | Fan | 1 to 6kW | |
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MTA925-(kW) NEW! (For Hydrogen and combustible gas heating) |
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 12 kW three-phase or single-phase GTA925-12 |
Features and Application:
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Maximum Temperature |
Key Selection Feature |
Typical Power Range |
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General specifications: |
1000C (1700F) | In-line only | Email MHI for models |
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Application:
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Typical Power Range |
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General specifications: |
Link | Plasma | Link Fuel |
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Application:
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| Maximum Temperature | Key Selection Feature | Typical Power Range | |
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General specifications: |
Please Call | In-line | Call MHI |
| Recirculating Airtorch Airtorch Handbook Airtorch Applications Knife Edge Die Heating |
Controls Thermoplate Furnaces Continuous Ovens Pricing FAQ’s |
GAS MANAGEMENT SYSTEMS: |
The latest application of the Airtorch™ is in Fluidized Beds! Please call MHI for details.
Airtorch® Applications
| Aluminum Brazing | Scorching/Burn off/Curing |
The Airtorch® has opened up new possibilities in brazing and joining technologies. Whereas brazing furnaces were once cumbersome and expensive, Airtorch® enables cost-effective processes. |
The Airtorch® can be used for curing, surface burning, and sealing operations. The possibilities are endless, as you can use air, Nitrogen, helium, and argon. |
| Large Die Heating | Direct Ceramic Drying |
| The Airtorch® allows large die heat-up and reclaim of dies and aluminum.
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It can easily remove free and bonded water. The Airtorch® can achieve very high temperatures without contamination; therefore, direct drying is a natural application. MHI also manufactures several Airtorch® Continuous ovens. |
| Binder Burn Off | Heating for Tensile Testing |
Easy, uniform, safe, and collectible binder burn-off. For ceramics, nitrides, powder metals, etc. Substantially improves quality and productivity. |
When you need high temperatures in spaces where resistance heating elements cannot be used, the Airtorch® provides the solution.
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| Packaging or Sealing | Die Heating |
Designed for long life and high temperatures, the non-contaminating Airtorch® is an ideal solution for inline packaging or sealing processes. |
Use the Airtorch® to preheat dies in the metal forging and rolling industries. |
| Soldering, Melting and Dental | |
| Use the Airtorch® to soften, solder, and melt precious metals and glass. This feature is very applicable to the dental, jewelry, and glass industries. Use for rapid glazing, burnout, and quick melts. | |
| Nozzle Heating | Gas Preheating |
The glass industry uses the high-temperature Airtorch® to enable uniform flow and reflow of molten glass. The air temperature can reach 1200°C with a very low flow rate. |
Airtorch® can rapidly heat various atmospheres: Air, Nitrogen, Argon, Helium, etc. Call MHI for more information.
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| Microprocessor Heating | Light Fiber Processing |
| Unique heating from 500°C to 1000°C. The Airtorch® produces laser-like heat to small areas down to 5mm in diameter, with stable, accurate control.
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Uniformly frees carbon from woven fibers with true convection. The Airtorch® creates hot, turbulent air that passes through the substrate for uniform, accurate heating. As carbon is released, the natural flow of clean hot air flushes the airborne carbon away from the part and up the chimney. |
| Effective Heat Treating | Preheating for Welding |
Uniform rapid heating. The Airtorch® offers uniform high temperature and heat transfer to heat parts rapidly. Very effective for metals when increasing hardness. |
With high accuracy and temperature control, the Airtorch® reduces guesswork in welding preheating. Offers accurate temperature readout.
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| Spot Decarborizing (reducing hardness) | Ultimate Utility |
Over-carbonizing causes hardness above most machining capabilities. The Airtorch® offers locatable, accurate, rapid heat-up and cool-down to diffuse carbon, enabling efficient tempering. |
Develop your own application. The Airtorch® supports many applications that require accuracy, uniformity, power, and high temperatures. You also benefit from whisper-like operation, energy efficiency, and ease of use. |
| A comparison of the benefits of heating by convection and radiation at temperatures below 1000°C (1830°F) is presented in this article. The convective heating data is for a nonpolluting furnace that uses an electrically powered, ultra-hot air/gas generator. The Airtorch source quickly and efficiently produces hot air or inert gas heated to temperatures up to 1000°C (1830°F). The complete article is available in the October issue of ADVANCE MATERIALS & PROCESSES magazine (pages 213 to 215,10/1999). Read the complete article and other similar articles
Read the article on enhanced heat transfer coefficient with even small stable ionization. |
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