thanks for your pay attention, what's the meaning of "how do you keep the oil suspendedhow do you keep the oil suspended" , really i can't realize the meaning of suspended for oil.
the quench rate of oil is good, beacause in some products of AISI 4337 , we have quenching cracks.
for some bundle we quenched in water and oil, the structure has ferrite with martensite and bainite. austenitizing temp. 860C Holding time: 60 min Dipping time:300 seconds moving time: 100seconds has anyone knowledge about existence of ferrite in quench microstructure?