For the sealing surfaces of valves in refineries, is it better to use cemented carbide or CR13? Which one is more expensive
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For the sealing surfaces of valves in refineries, is it better to use cemented carbide or CR13? Why, which one is more expensive
Is expensive always the right choice? Is the cheaper one still the best option?
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It depends on your operating conditions: what medium is being used, its composition, temperature, and pressure.
The sealing surfaces of hard-sealed designs are generally clad; we usually use STL for cladding
Research and Analysis on the Cladding Materials for Steel Valve Sealing Surfaces presents a comparison of the technical and economic aspects of the materials used for cladding valve sealing surfaces. Everything you want to know is here.
Cemented carbide is more wear-resistant and lasts longer
Check the process requirements； 1: Dielectric corrosion characteristics, temperature characteristics ； ---Decide what material to use ； 2: Is the switch turned on and off frequently? ； ---Is wear resistance a factor to consider? It is turned on and off once or twice a year, so wear resistance requirements are basically ignored ； This is very important for critical valves that are opened and closed frequently.
Don’t choose the right one; just choose the expensive one. Whatever it takes, using cemented carbide is the right choice. Spool + Ni60, seat + Ni55.