Heat treatment industry often use heat-resistant steel castings.Heat treatment related to heat resistant steel castings basic common sense part 3:

3.quenching

Operation method: heat the steel to the phase transition temperature above Ac3 or Ac1, heat preservation for a period of time, and then in the water, nitrate, oil, or rapid cooling in the air.

Objective: quenching is generally in order to get high hardness martensite structure, sometimes for some high alloy steel, such as stainless steel, wear-resistant steel quenching, is in order to get a single homogeneous austenitic organization in order to improve the wear resistance and corrosion resistance.

Application points: 1. Commonly used in carbon content is more than zero point three percent of the carbon steel and alloy steel; 2. The quenching can give full play to the potential strength and wear resistance of steel, but at the same time can cause a lot of stress, reduce the plasticity and impact toughness of steel, so must carry on the tempering in order to get better comprehensive mechanical properties.