we are doing the gas carburising process in pit type furnace, (average case depth upto 2.8mm). we have observed some different type of microstructure (surface) at certain batch. this structure like a giraffe skin structure. and its coiming only at surface. but we have checked the hardness on structure(by micro hardness) it's around 57/58 HRC.
as per Our Quality team statement that structure is troosite, but i was not accept. And i dont have any proper document for prove the structure. But i explaind about the troosite structure. enventhrough they are not accepting.
pl guide me how i can explain about the troosite structure.
Remamber: i have to explain to the non-metallugist.