Temper welding is used to avoid post Weld Heat Treatment
-minimum preheat: 175 C -Maximum interpass: 230 C
First Layer: SMAW. max. 3 mm diam. low hydrogen electrode.
Remove 50% of this layer
Subsequent
layers: max. 4-mm diam. low hydrogen Electrode
ENSURE TEMPERING OF PRIOR BEADS
Final temper bead reinforcement should be removed
keep at 232 to 288 C for 2 hrs