The Steel bar hardening and tempering equipment is a common metal heat treatment method, mainly used to improve the hardness and strength of steel bars while maintaining a certain toughness. This process usually includes the following steps:
1. Heating
Place the steel rod into the furnace and heat it up to the appropriate temperature. The heating temperature is generally between 850 ℃ and 870 ℃, and the specific temperature needs to be determined according to the material of the steel rod and the required hardness. The purpose of heating is to transform the structure of the steel rod into austenite and dissolve the alloying elements, in order to form a uniform structure during the cooling process.
2. Thermal insulation
Keep the steel rod heated to the appropriate temperature at that temperature for a period of time, usually 30-60 minutes. The length of insulation time depends on the size of the steel rod and the required performance. The purpose of insulation is to achieve a uniform structure inside the steel rod, in order to obtain the desired hardness and strength during the cooling process of the steel bar heat treatment furnace .
3. Quenching
After insulation, the steel rod rapidly cools to form a martensitic structure. Quenching can be carried out using various methods, such as water quenching, oil quenching, or gas quenching. Choosing the appropriate quenching medium should take into account the size of the steel rod and the required hardness. After quenching, the steel rod will become very hard but fragile.
4. Tempering
In order to reduce the brittleness of steel bars, tempering is required. In the tempering stage, the quenched steel rod is heated to a lower temperature, usually between 150 ℃ and 200 ℃, and then cooled after a period of insulation. The purpose of tempering is to reduce the hardness of steel bars, improve toughness and strength. The tempering temperature and time can be adjusted according to specific application requirements.
Throughout the entire steel bar induction heat treatment machine process, attention should be paid to controlling the heating and cooling rates, as well as the tempering temperature and time, to ensure that the steel rod obtains the required physical and mechanical properties. In addition, different types of steel bars may require different heat treatment parameters, so adjustments need to be made according to specific situations in practical operations.
Overseas manager: Tom Wang
Email:tom@foreverfurnace.com
Phone: 0086-13303078975(whatsapp, wechat,line)
Specialist of bar heat treatment furnace in China; Glad to be your business partner in induction heating field.
Post time: 11-22-2024