Quench Cracks: Cracks formed in a steel part during or after quench, resulting from high stresses in cooling; could be caused by water in the quenchoil.
淬火裂纹：裂纹在钢材的淬火或淬火后形成，由于冷却时的高应力所造成；也有可能是在淬火油中的水所导致。
2
And the research progress of mechanisms of quenchoil viscosity changing and mechanisms of anfifoulant were summaned.
总结了当前在急冷油粘度变化和减粘剂减粘原理方面的研究进展；
3
By measuring the cooling curve and quench severity of quenching oil at various flow rates, the relationship among the hardening capacity, quench severity and flow rate was established.