Process Hot Air Heaters for Industrial Applications

MHI manufactures a comprehensive line of process heating tools from low to very high temperatures of 1500°C (~2700°F).  MHI Airtorches™ are Patented.
Overview:
The Airtorch® is used for several modern direct heating configurations (see typical application pages in Airtorch® Handbook available free from MHI). Airtorches™ are also used for augmenting or heating existing ovens and furnaces. They offer high flexibility and control of any heating process.

Models:
For help choosing the right Airtorch® for your application, click here for Selection Guide.

New Variable inlet temperatures to 800°C and recirculators for energy efficiency.

Models (1200°C)   (new higher temperature controls required

accessories

AT Models, click here for details

Application:

  • Automotive Sensor
  • Simulation
  • Brazing
  • Furnaces
  • IC’s
  • Debinding
  • Curing
  • Melting
  • Solid Oxide Fuel Cells

Maximum Temperature

Key Selection Feature

Typical Power Range

General specifications: 

1200°C In-line or Fan  0.5 to 60 kW

High Pressure Models  GTA (1200°C) Models  controls required

accessories
Special high value liquid heaters

Copyright MHI Inc. USA

 

Application:

  • Automotive Sensor
  • Simulation
  • Brazing
  • Furnaces
  • IC’s
  • Debinding
  • Curing
  • Melting
  • Solid Oxide Fuel Cells
  • Combustion studies

Maximum Temperature

Key Selection Feature

Typical Power Range

General specifications: 

850-1200°C Pressure Vessel Model  6 to 400kW

 LTA (1000°C) VTA (900°C)   

accessories

lta750-10_interface Airtorch

Application:

  • Drying
  • Packaging
  • Curing
  • Coating
  • Ovens and Paint Stripping
  • Models can directly be plugged into 110/208/220/240/380/440/480V

Maximum Temperature

Key Selection Feature

Typical Power Range

General specifications: 

LTA1000C In-line 1 to 60kW 
VTA900C Fan   1 to 6kW  

MTA925-(kW) NEW! (For Hydrogen and combustible gas heating)

accessories

2 KW three phase or Single Phase GTA-1

12 KW three phase or Single Phase GTA925-12

Features and Application:

  • Robust Design
  • Niche Automotive Applications
  • Service Plan (No Downtime)
  • Solid Oxide Fuel Cells

Maximum Temperature

Key Selection Feature

Typical Power Range

General specifications: 

1000C (1700F) In-line only Email MHI for models

 Plasma Models  

accessories

Application:

  • Sterilization
  • Surface Cleaning
  • Coatings and Film
  • Brazing Alloys
  • Semiconductor and Waste Beneficiation
  • Plasma Beam Melting for Aluminum with lowest dross and highest energy efficiency
Maximum Temperature Key Selection Feature

Typical Power Range

General specifications: 

Link Plasma Link

Fuel Cell & Hydrogen Heaters

accessories

Application:

  • Fuel cell and hydrogen
Maximum Temperature Key Selection Feature Typical Power Range

General specifications: 

Please Call In-line Call MHI

Airtorch Resources

Recirculating Airtorch
Airtorch Handbook
Airtorch Applications
Knife Edge
Die Heating
Controls
Thermoplate
Furnaces
Continuous Ovens Pricing
FAQ’s
GAS MANAGEMENT SYSTEMS:

SIMGAS

GPAN

Further customization and customized nozzles

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 in the past brazing furnaces were cumbersome and expensive, Airtorch® allows for inexpensive processes.
aluminum brazing
The Airtorch® can be used for curing, surface burning and sealing operations. The possibilities are endless as Air, Nitrogen, Helium and Argon can be used.
scorching/burn off/curing
Large Die Heating Direct Ceramic Drying
The Airtorch® allows large die heat-up; reclaim dies and aluminum.

large die heating

Free and bonded water can be easily removed. The Airtorch® can achieve very high temperatures without contamination, therefore direct drying is a natural application. MHI also manufactures several Airtorch® Continuous ovens.
direct ceramic drying
Binder Burn Off Heating for Tensile Testing
Easy, uniform, safe, and collectable binder burn off. For ceramics, nitrides, powder metals, etc. Substantially improve quality and productivity.
binder burn off
When high temperatures are needed in spaces where resistance heating elements cannot be used, the Airtorch® provides the solution.

heating for tensile testing

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.
packaging or sealing
Use the Airtorch® as a preheating device for dies in the metal forging and rolling industries.
die heating
Soldering, Melting and Dental
Use the Airtorch® for softening, soldering, and melting of 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 be as high as 1200°C with a very low flow rate.
nozzle heating
Airtorch® can be used to rapidly heat various atmospheres: Air, Nitrogen, Argon, Helium, etc. Call MHI for more information.

gas preheating

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 and accurate control.

microprocessor heating

Uniformly free carbon from woven fibers with true convection. The Airtorch® creates hot turbulent air that passes through the substrate for uniform and 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 rapidly heat parts. Very effective for metals when increasing hardness.
effective heat treating
With high accuracy and temperatures, the Airtorch® reduces the guess work out of preheating for welding applications. Offers accurate temperature read-out.

preheating for welding

Spot Decarborinzing (reducing hardness) Ultimate Utility
Over carbonizing causes hardness above most machining capabilities. The Airtorch® offers locatable, accurate rapid heat-up and cool down to efficiency diffuse carbon allowing tempering of the metal.
spot decarborinzing
Develop your own application. The Airtorch® is capable of many applications where accuracy, uniformity, power and high temperatures are required. Also benefit from whisper-like operations, energy efficiency, and ease of use.
ultimate utility

 

Article Brief: Convective Heating for Ovens

75% Improvement in Energy Efficiency/Elimination of Distortion.
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 as high as 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 complete article and other similar articles

Read Article on enhanced heat transfer coefficient with even small stable ionization

Airtorch Continuous Oven

Airtorch™ Continuous Oven