LR AH36 steel plate is commonly used in shipbuilding. This high-strength ship steel plate is suitable for manufacturing hulls, decks and ship structural components. It has good corrosion resistance and weldability, and can withstand high pressure and harsh conditions in the marine environment. AH36 steel plate complies with the International Maritime Organization (IMO) and other relevant standards and is widely used in the shipbuilding industry.
The heat treatment process of LR AH36 steel plate generally includes the following steps:
1. Primary rolling: The steel billet is heated to the appropriate temperature and undergoes primary rolling to obtain the required thickness and shape.
2. Controlled rolling: By controlling the rolling temperature, deformation amount and rate, the crystal structure is adjusted and the strength and toughness of the steel plate are improved.
3. Cooling: Use water or air to quickly cool the rolled steel plate to lock the microstructure and improve hardness and strength.
4. Tempering treatment: Heat the cooled steel plate to an appropriate temperature, then control the cooling rate, adjust the organizational structure, reduce residual stress, and increase toughness.
5. TMCP (Thermomechanical Controlled Rolling): Rolling is performed within a controlled rolling temperature range, and precise control of microstructure and properties is achieved through thermomechanical control.
6. Normalizing treatment: Heat the steel plate to an appropriate temperature, then control the cooling rate, maintain it within a certain temperature range for a period of time, and adjust the organizational structure to improve strength and toughness.
The selection and parameter settings of these heat treatment processes depend on specific production requirements and performance indicators to ensure that LR AH36 steel plates have excellent mechanical properties, corrosion resistance and low-temperature toughness, and are suitable for high-demand fields such as shipbuilding.
