· Nickel Ball Time: 9 – 11 seconds, Flash Point: > 340°F; Parks AAA is considered a medium to medium fast oil. Many times a quench oil is described in seconds... Buy on Amazon. Why is Quenching Important in Forging? Photo by Becky Stern CC BYSA. Quenching is an important step in metalworking processes, because it allows you to control any changes to the microstructure of a workpiece. If a ...