The production process of S355J2W(H) steel plate usually includes the following steps:
Steelmaking: The raw materials are processed for steelmaking, and impurities, oxides, etc. in the molten iron are removed through steelmaking furnaces and other equipment, and appropriate alloy elements are added to adjust the composition of the steel.
Continuous casting: The refined molten steel is poured into the continuous casting machine for continuous casting to form continuous steel billets.
Hot rolling: The continuous casting billet is preheated, and then continuously or intermittently hot rolled through the rolling mill to gradually press the billet into the required thickness and width.
Controlled rolling and cooling: The temperature, force, etc. are controlled during the hot rolling process to ensure the shape and size of the steel plate. The steel plate is then quickly cooled by a cooling device.
Inspection and quality control: The steel plate is inspected for physical properties, chemical composition, dimensional accuracy, etc. to ensure that the product meets the standard requirements.
Surface treatment: The surface of the steel plate is treated according to needs, such as rust removal, spraying anti-corrosion paint, etc. For S355J2W(H) steel plates, pickling is a common surface treatment method, which can remove oxides, oil stains and other impurities on the surface of the steel plates and improve the surface quality of the steel plates.
Future development trend
With the continuous advancement of infrastructure construction and the continuous improvement of environmental protection requirements, the demand for high-performance and environmentally friendly steel is growing. As a low-alloy structural steel with high strength and strong weather resistance, S355J2W (H) steel plate has a very broad market prospect. In the future, the production and application of S355J2W (H) steel plate will pay more attention to the following aspects:
- High performance: With the continuous improvement of material performance requirements for engineering structures, S355J2W (H) steel plates will continue to pursue higher strength and better toughness, plasticity and other properties.
- Environmental protection and energy saving: Environmental protection and energy saving have become important issues in today's society. The production and application of S355J2W (H) steel plates will also pay more attention to environmental protection and energy saving, adopt more environmentally friendly production processes and materials, and reduce energy consumption and emissions.
- Intelligence: With the continuous development of technologies such as the Internet of Things and big data, the production and application of S355J2W (H) steel plates will become more intelligent. Through intelligent technology, real-time monitoring and optimization of the production process can be achieved to improve production efficiency and product quality.
