Not only high speed milling quenchsteel ensures quality of manufactured surface, but only it can obtain high production efficiency.
淬硬钢高速铣削加工既可以保证加工表面的质量，又可以获得较高的生产效率。
2
In his good works, an artist should seize the subtle balance between clarity and obscurity, just like a forger to seize the right time to quenchsteel.
好的作品应当在藏与露之间掌握住微妙的平衡，这有如锻造工把握淬火最佳时间的玄妙。
3
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 quench oil.