Quenching of steel

Quenching is to heat the steel to above the critical temperature, keep it for a period of time, and then quickly put it in the quenching agent to make its temperature drop suddenly, and rapidly cool it at a rate greater than the critical cooling rate to obtain an imbalance dominated by martensite The heat treatment method of the organization. Quenching can increase the strength and hardness of steel, but reduce its plasticity. Quenching agents commonly used in quenching are: water, oil, alkaline water and salt solutions.