Roller roller steel what material? Thickness 10mm or so, which expert pointing Q235, OK?
when the old hardening layer wear off, new hardening layer formed again.A3 steel as an ordinary component, not force, but force components, but not, strength, toughness, hardness is not good.
High manganese steel has a strong work hardening, such as surface hardness of 200HB high manganese steel, after the impact of the rapid formation of hardness of 500HB hardened layer,
Thickness of 10? A little thin, more than 20, at least, how can Q235 do it? Can the surface hardness be reached?! Use Mn16 high manganese wear resistant steel! Casting, water toughening. (at least Mn13.)-------------------------