Are there any devices that use carbon steel as the base material, with E309 welded on top of it and C276 welded on the surface? ?
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Have you seen PTA hydrogenation reactors made with fully cladded Hastelloy weld materials (E309L+C276), where the base material is stainless steel, and the composite material used is C276 – which offers good performance but is quite expensive? Is it possible to use carbon steel as the base material, with E309 cladded in the middle and C276 cladded on the surface? ? @RedLee_ZZHI @Shutong @ZhizheMing @zxz017
I’ve seen tenders for PTA hydrogenation reactors with a diameter of over 5000, using materials such as E309L and C276; we didn’t win those bids
I don’t know much about surfacing technology. Compared to raising the substrate grade, there should be disadvantages in terms of labor demand and quality control.
In general surfacing processes, isn’t it necessary to first apply a transition layer? E309 is a common material for such transition layers, after which a high-nickel alloy is applied in the surfacing process
What is E309L? What do you think is the grade of the steel plate?
So it’s still multi-layer surfacing after all; I was misled
I haven’t come into contact with it before; it’s carbon steel equipment with C276 clad on the inside. I’m not sure what operating conditions would require such a material choice