Is it permissible to perform secondary heat treatment on a Class A boiler drum for some reason?
Thread Content
A 35-ton medium-temperature and medium-pressure boiler, with a steam drum of 1400*40 dimensions, made of Q345R material. Is it permissible to perform a second heat treatment on a boiler drum that has already been heat-treated for some reason? Excuse me, sir, what are the specific requirements of that standard? Thank you
There should be no problem, but secondary heat treatment is difficult; the user likely does not have a heating furnace for this purpose. It is necessary to return the boiler to the manufacturer’s factory where a heating furnace can be used to carry out overall heat treatment of the steam drum. This results in high costs, and issues such as installation and restoration as well as the impact on production must also be taken into consideration.
The specific reasons need to be addressed individually; it’s not possible to generalize