1. Introduction to SPV490Q steel plate:
SPV490Q steel plate belongs to the Japanese standard boiler and pressure vessel steel plate, usually the Japanese standard steel plate in the country will be relatively few people to understand, the use of foreign steel plate grades is generally the American standard and European standard accounted for the majority. There are a small amount of alloying elements added to the SPV490Q steel plate, which makes it have high strength and impact toughness, while the machinability of SPV490Q steel plate is good, and it has good corrosion resistance. Executive standard: Implement the Japanese standard "JISG3115". This standard stipulates the delivery status, technical conditions and other requirements of steel plates.
2. Chemical composition of SPV490Q steel plate: C: 020 si：≤0.5 mn：0.90-1.65 p：0.035 s：0.035 nb：0.005-0.05 v：0.01-0.12 ti：0.006-0.05 cr：≤0.30 ni：≤0.50 cu：≤0.40 mo：≤0.10 n：≤0.015 als：≥0.01
3. SPV490Q steel plate process.
1) Materials (scrap steel, pig iron and molten iron).
2) Electric furnace (100 tons of electric arc furnace exercise), converter.
3) LF furnace molten steel essence treatment.
4) Vacuum treatment of molten steel in VD or VOD furnace.
5) Die casting (a variety of key type die casting lines) or continuous casting (large slab continuous casting machine); (1. Steel ingot remelting treatment 50 tons of slab electroslag furnace).
6) Heating (continuous furnace and soaking furnace).
7) Steel plate rolling (4100 and 4200mm rolling mills).
8) Heat treatment of steel plate.
9) Steel plate cutting inspection.
10) SPV490Q warehousing.
Fourth, performance characteristics.
1.Mechanical properties.
SPV490 boiler and pressure vessel steel plate has high strength and toughness, and after reasonable heat treatment, its tensile strength, yield point and elongation can meet the requirements of relevant standards. In addition, it has excellent low-temperature impact toughness, which can maintain good impact toughness at lower temperatures.
2.Corrosion resistance.
SPV490 boiler and pressure vessel steel plate has good corrosion resistance, especially in acidic environment, its corrosion resistance is more prominent. This is mainly due to the fact that it has a dense oxide film on its surface, which can effectively prevent the penetration of corrosive media, thereby prolonging the service life of the steel plate.
3.Processability.
SPV490 boiler and pressure vessel steel plate has good processing performance, and will not appear obvious deformation and cracks after shearing, bending and welding. In addition, it has good weldability and is able to meet the requirements of various welding processes.
5. Delivery status.
SPV490 steel plate delivery statusSPV490 steel plate is delivered in the default normalized state, and can be delivered according to customer requirements such as tempering, normalizing and tempering, quenching and tempering, etc. according to different needs.
SPV490 steel plate thickness flaw detection can be done; 1 probe, 2 probe, 3 probe.
SPV490 steel plate thickness extension can be done; z15、z25、z35
Sixth, the field of application.
1.Petrochemical industry.
SPV490 boiler and pressure vessel steel plate is widely used in various equipment in the petrochemical industry, such as reactors, separators, storage tanks, etc. In these equipment, SPV490 steel plate can withstand the action of high temperature, high pressure and corrosive media to ensure the safe operation of the equipment. 2.In the power industry, SPV490 boiler and pressure vessel steel plates are widely used in boilers, steam turbines and other equipment. It can withstand high temperature, high pressure and oxidative corrosion to ensure the long-term stable operation of the equipment. In addition, in nuclear power equipment, SPV490 steel plate also has a wide range of application prospects. 3.Machinery manufacturing industry Hot Engine Program SPV490 boiler and pressure vessel steel plate has excellent mechanical properties and processing properties, so it has been widely used in the machinery manufacturing industry. For example, it can be used to manufacture various hydraulic cylinders, compressor cylinders and other high-performance mechanical components. Among these components, SPV490 steel plates can withstand high pressure, high stress and corrosive media, ensuring the long-term stable operation of machinery and equipment.
V. Conclusions. As a high-quality corrosion-resistant alloy material, SPV490 boiler and pressure vessel steel plate has excellent mechanical properties and corrosion resistance, and is widely used in petroleum, chemical, electric power and machinery and other fields. Through advanced smelting and heat treatment processes, SPV490 steel plate can meet the requirements of various complex environments, providing a strong guarantee for the long-term stable operation of industrial equipment.