Who knows what material NQ40 is made of, and which country’s standards it follows?
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One type of pump flow-over component is NQ40
It is a composite treatment technology, a surface modification and strengthening technique, and not a specific material
A processing technique, not a material code
Nitriding is a chemical heat treatment process in which nitrogen atoms are diffused into the surface layer of a workpiece at a certain temperature in a specific medium. Products treated with nitriding possess excellent wear resistance, fatigue resistance, corrosion resistance, and high-temperature resistance.
Composite treatment technology is a surface modification and strengthening technique, rather than a specific material. I once repaired a multi-stage centrifugal pump; its oil-system bearings were of non-standard type, with an outer diameter of only 28 mm. They could be classified as 2222 type, but this does not correspond to any domestic standard.
Composite treatment technology is a surface modification and strengthening technique, rather than a specific material. I once repaired a multi-stage centrifugal pump; its oil-system bearings were of non-standard type, with an outer diameter of only 28 mm. They could be classified as 2222 type, but this does not correspond to any domestic standard.