A Guide To Selecting The Right Industrial Oven For Your Processing Application

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Are you looking to select the right industrial oven for your processing application but don’t know where to begin?

Luckily, Despatch Industries has you covered with the company’s Industrial Oven Selection Guide. This guide takes you through the steps needed to select an oven that meets the needs of your process.

Industrial Oven Selection Guide

Industrial Oven Selection Guide

Here’s an outline:

  1. Defining and identifying your application including:
    • Annealing – heating & slow cooling
    • Curing – controlled heating
    • Drying – removing moisture
    • Baking – removing entrained bases
    • Sterilization – eliminating forms of life present
    • Depyrogenation – destroying pyrogens at high temperatures
    • Burn-in testing – stressing components to failure
    • Heat treating – changing metal properties
    • Aging – achieving stable surface conditions
  2. Determining whether a batch or continuous model oven will work best for your process
  3. Choosing the best chamber size to suit your processing needs. Oven size categories include:
    • Lab or Benchtop Ovens – laboratory test and development applications
    • Cabinet Ovens – ergonomically designed reach-in ovens with efficient footprint
    • Walk-In and Truck-In Ovens – large batch ovens loaded by fork truck or manually, typically 360 cubic feet and larger for walk-in and 52 to 210 cubic feet for truck-in.
  4. Selecting temperature and uniformity requirements
    • Required dwell time and cycle time
    • Type and amount of product load
    • Heat-up rate control
    • Specific cool down requirements
    • Oven Heating Capacity
      • Mass and specific heat of the product
      • Sufficient heat absorption
  5. Know how critical temperature uniformity is for your process, factors that influence temperature uniformity, and methods of measuring temperatures including:
    • Cold air stratification
    • Accuracy and response speed of controller
    • Heat loss through oven walls, door, door seal
    • Placement of workload
    • Ability to direct air through the chamber
    • Volume and weight of products being processed
    • A 9 point test for measuring temperatures in every corner as well as the center of the oven
  6. Choose the Best Airflow for your product load
    • Horizontal
    • Vertical (up and down)
    • Uniflow – a combination of vertical up and horizontal airflow.
  7. Design and Construction Considerations
    • Proper Oven Convention
      • Improves temperature uniformity
      • Reduces heat loss and energy expenses
      • Simplifies Cleaning
    • Oven Interior Considerations
      • Stainless steel corrosion resistance
      • Problems with Aluminized and mild steel
  8. Look for Applications Standards
    • L & C-ULlisted ovens, control panels available, and CE Conformance.
  9. Define and special processing needs
    • Clean process oven
      • HEPA filters and filtration systems
      • Rounded corners
      • Continuous back welding
    • Class A oven
      • Forced exhaust keep flammable vapor concentrates well below LFL
      • Purge timer operating with forced exhaust to purge volatiles
      • Airflow switch to prove exhaust airflow
      • Explosion relief panel relieves vent pressure
    • Inert Atmospheric Oven
      • Inert gas to pressurize oven
      • High integrity welds
      • Water coils and air-to-air heat exchanger for cooling
      • NFPA
    • Define what Controller Capabilities are Needed
      • Single setpoint controllers
      • Programmable ramp/sock controllers
      • Despatch Protocol 3 can be set to either function
    • Select a Standard Oven or Contact a Product Specialist for Custom Configuration
      • Custom Solutions
      • Product Specialists
    • Common Process Applications for Benchtop, Cabinet/Reach-In Ovens, Walk-In Ovens and Conveyor Ovens:
      • Testing, Curing, Drying, Annealing
      • Testing, Curing, Drying, Bonding
      • Curing, Drying Sterilizing, Aging
      • Preheating and Testing Pipes
      • Polyimide Curing
      • Burn-In, Reliability Testing
      • Sterilization, Depyrogenation
      • Aging, Bonding, Curing, Drying
      • Finish Baking, Heat Treating, Burn-in
      • Aging, Annealing, Curing
      • Preheating, Curing, Bonding, Drying, Heat Treating

Whether your thermal application is simple, complex or anywhere in between, this guide will help you find the perfect solution.

To learn more download the FREE guide

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