PWHT-Oil Combustion Heating Of Welded Fabrications In Permanent Furnaces

What is PWHT Oil Combustion Heating Of Welded Fabrications In Permanent Furnaces

 stands for Post Weld Heat Treatment, which is a process used to reduce the residual stresses and improve the mechanical properties of welded fabrications. Oil combustion heating is a method of providing heat for the PWHT process.

In oil combustion heating, a fuel oil is burned to generate heat, which is then used to heat the welded fabrication. The combustion process typically takes place in a furnace, which is designed to provide a controlled and uniform heat distribution.

The use of permanent furnaces for PWHT is common in industries such as oil and gas, petrochemical, and power generation, where welded components are subjected to high levels of stress and corrosion. The furnaces are designed to maintain a specific temperature range and hold the welded fabrications at that temperature for a certain period of time. The exact temperature and time required for PWHT depend on the specific material, welding process, and intended application.

The benefits of PWHT with oil combustion heating include improved strength, ductility, and toughness of the welded fabrication, as well as reduced susceptibility to cracking and other forms of damage. The process also helps to reduce residual stresses that can lead to distortion or failure of the welded components over time.

Overall, PWHT with oil combustion heating is a reliable and effective method for improving the performance and longevity of welded fabrications in industries where high levels of stress and corrosion are present.

Supply of Electric / Oil / Gas Fired Furnaces; Preheat, Postheat and Postweld Heat Treatment of pipes, vessels and fabrications