dark pezzi saved..

[antonio_sc]

good morning to all,the burn of electro-solded components can cause problems to the joint (it is spoken of low temperatures but I was told differently and I would like to make sure)? in the case of welded pieces to which treatments should pay attention?
Thank you very much for answers.

 

[meccanicamg]

cold burn is a non-thermochemical chemical process. Maybe it doesn't take in the welded area for too much carbon. c45 for example is to be burnt hot because cold remains white.