EN 10083-2 C35 steel plate heat treatment process details

The EN 10083-2 standard specifies the heat treatment process requirements for C35 steel plate, and the following are its details:

1. Normalization:
- The heating temperature is generally in the range of 850°C to 890°C.
- The holding time is determined according to the thickness and diameter of the C35 steel plate, usually 1 hour per 25mm sheet thickness.
- Cooling method should be air cooling or forced cooling.

2. Quenching: Quenching
- The quenching temperature depends on the specific requirements and is usually cooled quickly in water or oil.
- Ensure that the temperature and speed of the quenching medium meet the specification requirements to obtain the required hardness and strength.

3. Tempering:
- The tempering temperature is generally between 550°C and 660°C.
- The holding time is determined according to the thickness and hardness requirements of the C35 steel plate, usually more than 1 hour.
- Cooling mode: air cooling or forced cooling.

4. Welding heat treatment:
- After welding, it is necessary to heat treat the welded joint to eliminate the residual stress caused by welding and improve the performance of the weld zone.
- Welding heat treatment parameters should be determined according to the specific welding method and material requirements.

5. Preheat and control cooling rate:
- For plates with thickness greater than or equal to 50mm, preheat should be carried out before welding and heat treatment, and the preheat temperature and time should meet the requirements of the specification.
- Controlled cooling rate helps to reduce deformation and avoid the formation of cracks.

6. Temperature and time control:
- Strictly control the temperature and time during the entire heat treatment process to ensure that the required mechanical properties and microstructure are achieved.
- Parameters at each stage of the heat treatment process should be precisely controlled according to specific specifications and design requirements.

The above heat treatment process requirements help to ensure that EN 10083-2 C35 steel plate has the required strength, toughness and wear resistance, and C35 steel plate is suitable for mechanical parts and drive shafts. In actual operation, the relevant specifications should be strictly followed, and the heat treatment process should be adjusted and optimized according to the specific situation.