0CR16Ni5Mo stainless steel is a high-quality stainless steel material, which is widely used in various industrial fields. In order to further improve its mechanical properties and corrosion resistance, the heat treatment process is an indispensable part. Among them, QT900 and QT700 are two commonly used heat treatment processes.
The QT900 heat treatment process is a high-temperature quenching process, the main purpose of which is to make 0Cr16Ni5Mo stainless steel obtain higher hardness and strength through rapid heating and cooling. In this process, the microstructure of the steel has undergone significant changes, and the original austenite structure has been replaced by a martensitic structure. This transformation not only increases the hardness of the steel, but also enhances its wear and corrosion resistance. However, the QT900 process has high equipment and technical requirements, and is also difficult to operate, so special attention is required in practical applications.
Compared with QT900, QT700 heat treatment process is a medium-temperature quenching process. It is quenched at a lower temperature to make 0Cr16Ni5Mo stainless steel obtain good comprehensive properties. The QT700 process not only retains a certain toughness of the steel, but also improves its hardness and strength. This process is simple to operate and does not require high equipment, so it has been widely used in industrial production.
In summary, QT900 and QT700 heat treatment processes have their own advantages and disadvantages, and the appropriate process needs to be selected according to specific needs in practical applications. For occasions that require higher hardness and wear resistance, the QT900 process is a better choice; For occasions that require both hardness and toughness, the QT700 process is more suitable. No matter which process is chosen, it is necessary to strictly control the operation process to ensure the quality of heat treatment, so as to give full play to the excellent performance of 0Cr16Ni5Mo stainless steel.