Coke Oven gas Primary cooler
Coke Oven gas Primary cooler
(OP)
Does anyone know if it is reasonable to expect SCC problem in a coke oven gas primary cooler ? What kind of SCC can be expected (H2S, Carbonate,Alkaline.....)? It is true that a single side weld (not back gouged) can reduce the susceptibility to SCC problem in such a component ? In my opinion with single sided weld i can reduce the microstructural susceptibility of the internal surface but not the residual stress on the same surface.
Thanks
Deklerk
Thanks
Deklerk





RE: Coke Oven gas Primary cooler
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Your second question could be answered if the residual welding stresses were known and compared between both welding techniques (single side vs. double side).
In general, before stress relieving, welding with more deposited material (single side) should present higher residual stresses and be more prone to SCC.
http://www.welding-advisers.com/
RE: Coke Oven gas Primary cooler
The construction material is Carbon Steel, that is susceptible of SCC in the mentioned environment.
I think that with single sided weld transversal resisual stresses can be reduced on the internal surface in comparison with double sided weld, but not longitudinal stresses that can peromote as well SCC phenomena.