Heat Treatment

Since 2020, TechCorr has had a policy of continuous improvement, striving to provide our customers with the latest technology and equipment available.

TechCorr’s Thermal Division complements our legacy of NDT and Inspection services.

Our Thermal Division is well suited to provide a broad range of Heat-Treating Services in a timely and cost-effective manner

These services include:

  •     Preheat and Stress Relieving (PWHT)
  •     Refractory Curing / Dry outs
  •     Plasite / Glass Curing
  •     Turbine Warming Systems
  •     Thermal Expansions
  •     Line Thawing
  •     Engineering Services

Industries that may find these services valuable include:

  •     Power Generation Facilities
  •     Petroleum Producers
  •     Petrochemical Facilities
  •     Pulp & Paper Mills
  •     Fabrication Facilities
  •     Gas Plants & Pipelines
  •     Refractory Industries

Our core group of heat-treating staff and field technicians has combined, over 100+ years of experience in providing heat-treating services.  All of our field personnel are professional, highly trained, and provide unparalleled service along with utilizing state of the art equipment to support your heat-treating requirements.

We commit to providing quality and service on each and every shift.  Our Quality Assurance Program is designed to meet all codes or customer-related procedures.  These include:

  •     ASME Section I Power Boilers
  •     ASME Section III Rules for Construction of Nuclear Power Plant Components
  •     ASME Section VIII Div. I and II, Pressure Vessels
  •     ASME B31.1 Power Piping
  •     ASME B31.3 Chemical Plant and Petroleum Refinery Piping
  •     ANSI / AWS D10.10- Recommended Practices for Local Heating of Welds in Piping and Tubing
  •     WRC Bulletin #452 Recommended Practices for Local Heating of Welds in Pressure Vessels

Our field services consist of (12-18-24 point) Self-Contained Mobile Rigs, and a variety of portable electric and combustion heating equipment to meet our customer’s site or shop requirements. Our capabilities extend to designing and fabricating custom furnaces to meet client needs, built to your specifications.

Just like PWHT, preheat treatment can significantly reduce the risk of cracking in parent and weld metals.

Welding preheat treatment, not unlike PWHT, is a process that reduces the inherent risks of hydrogen cracking, shrinkage stress, and other damage mechanisms that regularly occur during the welding process. Welding preheat treatment works differently however by heating the parent metals (adjacent metals being joined) prior to the actual welding process. This minimizes the discontinuity of rapidly heated weld metals and slower heating parent metals; effectively leveling the heat across both materials involved in the welding process. Also, just like PWHT, not all instances require welding preheat treatment. Therefore, it is important to hire the experts that know when preheating is advisable, and when it is not.

In an effort to reduce hydrogen-induced cracking (HIC) following the welding of a critical piece of equipment, TechCorr’s Thermal Divison promotes its post-weld heat treatment (PWHT) service. We adhere to all governing codes and standards in assisting when PWHT is necessary and what the recommended process is.

This process helps to reduce the risk of fracturing, cracking, and stress in the weld and parent metals of a piece of equipment. Because, not all materials require PWHT- some can be damaged by the process. Please consult one of our TechCorr Thermal Divison experts as it is critical to understand the material with which welding is occurring, the higher the carbon content in an equipment piece likely means a greater need for PWHT.

TechCorr offers combustion heat treatment which is used to determine the elemental composition of a pure organic compound by combusting the sample under conditions where the resulting combustion products can be quantitatively analyzed. Our Heat Treat division uses this same practice on a larger scale, testing industrial materials and metals by subduing those materials under heat stress. The combustion method is typically used in Refractory Dry Outs, Paint Cures, Furnace PWHT, and Post weld heat treatment of large vessels, towers, and reactors. The key here is functionality. Our team can determine if the metals or material will be functional using this technique.


TechCorr is the main player when needing to complete the heating cycle on your refractory.

With many large refractories rammed, cast, or gunned in the field refractories require “drying out” on location. The dry out constitutes a heating cycle that is applied to remove excess water/moisture from the thermal lining. Without which the potential for excess pressurization of steam trapped in the lining can cause catastrophic failure during the refractory’s working life.




In addition to the above-mentioned heat treatment methods, TechCorr offers Hydrogen bake out, Steam chest warming systems, Valve warming systems, Shrink fit and removal, and custom furnace applications.