Preheating in Welding Induction Heating Systems
ProHeat™ Induction Heating —
1 System - 4 Basic Induction Heating Configurations

Powering a Heating Revolution


ProHeat™ 35 Induction Heat Systems Solve Ongoing Preheating 
& Stress Relieving Problems


This simple and cost-effective heating process can deliver fast and consistent heat for:
  • Welding fabrication and construction;
  • Preheating of welds;
  • Post-weld heat treatment;
  • Coating removal; and
  • Shrink fit applications
Applications that would typically require hours to heat can be done in minutes utilizing induction heating.

In addition to the simplicity and efficiency, the ProHeat 35 induction heating system solves many key issues in today’s environment:
  • Does not produce the exposure to burns associated with open flames and electrical resistance wires (only the work part becomes hot)
  • No significant expense of fuel gases.
  • Produces fewer fumes than flame heating.
  • Produces less particulate from overheated insulation caused by high temperature electrical wires and ceramic pads.

Articles and Videos

New Preheating Technology for Rolled Pipe in Fabrication Shops

The majority of pipe welds completed in fabrication shops are rolled, and it's easy to understand why. Rotating pipe while welding provides many benefits, including ease of achieving quality welds by eliminating out-of-position welding; reduced welding operator fatigue; and improved productivity from higher wire feed speeds and increased deposition rates.
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When Preheating Before Welding, How to Choose the Right Equipment

Air-cooled cables, a new heating tool for induction, deliver flexibility and efficiency for welding preheat.
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Welding With Induction Heating Improves Consistency and Saves Time

Using an induction heating system for welding preheat and post-weld stress relief can save time and improve productivity.
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Miller Preheating Technology for Roll-Welded Pipe Increases Quality, Productivity and Safety

Gaining consistency in preheating rolled pipe, or flat plate or seam welds, without the hassle and hazards of open flames, increases safety and efficiency.

Maximize Productivity with Simple, Cost Effective Options of Miller ProHeat 35 Induction System

Miller’s ProHeat™ 35 Induction System offers flexibility to meet a wide range of heating requirements in welding applications.

Easily Achieve Targeted Preheat Temperatures on Moving Parts using Induction Heating from Miller

The Miller ProHeat™ rolling inductor heating system is a simple and cost-effective heating process.

Heat Parts Faster and More Consistently with Induction Heating

Induction heating provides great consistency in heating, faster time to temperature of the part, ease of use and safety in operation.

Miller Induction Heating - How it Works

This introduction to induction heating in welding applications will explain how it works and what it is.

The Lambeau Episodes 5: Induction Heating in Structural Steel Applications

Miron Construction used Miller induction heating throughout the Lambeau Field expansion project.

Miller ProHeat Induction Heating - Liquid Cooled System

Learn about the ProHeat induction heating liquid cooled system.

ProHeat™ Rolling Inductor Provides Safer Alternative to Preheating Rolled Pipe

Preheating is critical to achieve high weld quality; it eliminates moisture and reduces the opportunity for hydrogen cracking.

Induction Heating Cuts Preheat Time, Provides Uniform Heating for Swartfager Welding, Inc.

Swartfager Welding has turned to induction heating with ProHeat 35 for many of its preheating, interpass temperature control and stress relieving applications.