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Local Heat Treating

Field Heat Treating takes on many forms in terms of its application to materials, commonly referred to as Cooperheat or Cooperheating. It is defined as the in-field application of heat, to materials to intentionally alter their properties. The property changes can be physical and/or mechanical.

Cooperheat was one of the pioneering companies in the industry and subsequently became the generic and most recognizable name. Cooperheat as a company in North America no longer exists after it filed for Chapter 11. The Cooperheat brand was recently re-introduced by Stork a UK company, and the product line is unrecognizable to what previously existed in North America and most of the world.

Benefits of Heat Treating

Heat treating can offer various benefits, including weld strength, corrosion resistance, material durability, and material resilience. Additionally, preheating your materials before a weld can help avoid material stresses, slow the rate at which it cools, as well as prevent shrinkage and hydrogen cracking along the heat-affected zone. A post-heat treatment helps diffuse any remaining hydrogen and lowers the chances of hydrogen-induced cold cracking. Regardless of the reasons for utilizing heat treatment, the advantages are practically endless. Below, we’ve listed some of the most common uses for Local heat treating.

The most common applications of Field Heat Treatment are:

Welding Pre-Heat
Post Weld Heat Treatment (PWHT) / Stress Relieving
Sweat Fitting / Interference Fitting /Hub Removal
De-Gassing / Bake-Out / Dehydrogenation (DHT)
Solution Annealing
Refractory / Coating Curing
Refractory Drying
Process Start-Ups / Warm-Ups
Bolt / Stud / Nut Removal
Line Thaws

The following Equipment is often used to perform the above-mentioned applications:

Electrical Resistance (Cooperheat)

  • High Velocity Combustion
  • Induction
  • Furnaces
  • Pin Welding
  • Insulating Materials
  • To learn more about Local heat treating and its various industrial applications, contact the KASI team today.
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