Equipment for local and volumetric PWHT (heat treatment of welded joints)
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Off-furnace volume post weld heat treatment technology

07.11.2018 10:37:00

The out-of-furnace volumetric heat treatment is performed by our company with the help of specialized equipment that hasn't analogues in Russia: high-speed diesel burners.

Off-furnace volume post weld heat treatment equipment. GC Repair technologies Ltd. High speed diesel durners for PWHT. Off-furnace volume PWHT. GC Repair technologies Ltd.

Technology features

  • The presence of automated control and protection systems that prevent the ingress of fuel into the object, carry out uninterrupted monitoring of the flame and turn off the fuel supply in the event of its extinction. This system is unique and has no one competitor in Russia.

High speed diesel durners for PWHT. Off-furnace volume PWHT. GC Repair technologies Ltd. Diesel burner for post weld heat treatment

  • The control system ensures safe start-up of the burners and allows PWHT operators to avoid the danger zone near the burners. Other manufacturers use the "old-fashioned" method: using open flame and a towel.

PWHT operator. PWHT with diesel burenrs. GC Repair technologies Ltd. Off-furnace volume PWHT equipment in action

  • High-speed burners do not require additional sources of energy. Electricity is the only source needed for the system operation. The system includes all necessary components: fuel pumps, injection blowing fans, compressors, etc. Some of our competitors require a high-capacity compressed air supply (up to 0.6 m3 / h per burner at a pressure of 4-6 bar).

Off-furnace volume post weld heat treatment equipment. GC Repair technologies Ltd. Off-furnace volume post weld heat treatment equipment. GC Repair technologies Ltd.

  • High-speed burners provide high uniformity of heating due to the circulation of the turbulent flow of hot gases inside the workpiece. The burners of other companies heat definite areas, so they have to be rotated all the time, and still, it cannot help to avoid overheating “stains”.

Volumen PWHT diagram. GC Repair technologies Ltd.

  • During the work, our specialists use the most modern and high-tech equipment to monitor the temperature distribution, including electronic temperature recorders, high-temperature thermal imagers, etc.

Thermal imager. Temperature control. GC Repair technologies Ltd.

Our specialists have carried out many works of various complexity in different weather conditions. We have accumulated considerable experience in solving complex problems of out-of-furnace volumetric post weld heat treatment.

Off-furnace volumetric PWHT. GC Repair technologies Ltd.

All equipment used during the work of our specialists is properly certified and declared. Thermal operators regularly attend training and upgrade courses at a licensed educational centre.

Certificates. GC Repair technologies Ltd.



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