Introduction of steel plate material for 12MnNiVR large oil storage tank
12MnNiVR Steel Plate Introduction:
12MnNiVR is a steel plate for large oil storage tanks. Compared with the Japanese standard JIS G3115 standard SPV490Q crack sensitivity coefficient Pcm is reduced, which is more conducive to steel plate welding. The sampling direction of the impact test was changed from longitudinal to transverse, the impact temperature was changed from -10 degrees to -15 degrees or lower, and the impact energy was increased. Standard: GB19189.
| Chemical composition |
| Tabulation: Depu Steel Date: 2024-01-22 |
| C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
V |
| ≤0.15 |
0.15-0.40 |
1.2-1.6 |
≤0.015 |
≤0.008 |
0.15-0.40 |
≤0.30 |
0.1-0.3 |
0.02-0.06 |
Note:
(1): In order to improve the properties of steel, other trace alloying elements other than the above table can be added, and the data comes from the network and is for reference only.
(2): The allowable deviation of the chemical composition of the finished steel plate shall comply with the provisions of GB/T222
Mechanical properties of 12MnNiVR steel plate: tensile strength σb (MPa): 610-730 yield strength σs (MPa): ≥490
elongation δ5/(%): ≥17
12MnNiVR steel plate production process:
1. Raw materials (scrap steel, pig iron and molten iron)
2. Electric furnace ( 100 tons of electric arc furnace smelting), converter
3, LF furnace molten steel refining treatment 4, VD or VOD furnace molten steel vacuum treatment
5, die casting (a variety of key die casting lines) or continuous casting (large slab continuous casting machine); (1. Steel ingot remelting treatment 50 tons slab electroslag furnace)
6. Heating (continuous furnace and soaking furnace) 7, steel plate rolling (4100 and 4200mm rolling mills) 8, steel plate heat treatment (normalizing, tempering and tempering)
9, steel plate cutting inspection
10, warehousing
