: Perhaps the most effective tool, PWHT involves heating the completed weld to specific temperatures to "relax" the internal stresses caused by the thermal shock of welding and to temper hard microstructures.
The standard provides essential guidelines for producing weldments in that can resist environmental cracking in corrosive refinery settings. It primarily addresses two major cracking threats: nace rp0472 pdf
: Perhaps the most effective tool, PWHT involves heating the completed weld to specific temperatures to "relax" the internal stresses caused by the thermal shock of welding and to temper hard microstructures.
The standard provides essential guidelines for producing weldments in that can resist environmental cracking in corrosive refinery settings. It primarily addresses two major cracking threats: