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US 12,529,122 B2Granted
Low-cost hot-rolled steel plate for high temperature enameling, and manufacturing method theefor
AssigneeBaoshan Iron & Steel Co., Ltd.
InventorsShuangcheng Wang, Quanshe Sun
Life of this patent
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Abstract
A low-cost hot-rolled steel plate for high temperature enameling. The chemical composition in mass percentage of the plate contains mainly: C: 0.03-0.12%, Si: 0.1-0.5%, Mn: 0.3-1.5%, P: 0.03-0.10%, Al: 0.02-0.10%, Cr: 0.01-0.20%, Cu: 0.01-0.30%, N: 0.007-0.020%, and B: 0.0006-0.003%, and further satisfies: P×(N−14×B/11)×103>0.3. A manufacturing method for manufacturing such low-cost hot-rolled steel plate.
Claims6
A low-cost hot-rolled steel plate for high temperature enameling consisting of the following chemical composition in mass percentage:
- C:
- 0.03-0.12%, Si:
- 0.1-0.5%, Mn:
- 0.3-1.5%, P:
- 0.03-0.10%, Al:
- 0.02-0.10%, Cr:
- 0.01-0.20%, Cu:
- 0.01-0.30%, N:
- 0.007-0.020%, B:
- 0.0006-0.003%, and the balance being Fe and other inevitable impurities;
- wherein the chemical composition further satisfies the condition:
- P×(N−14×B/11)×103>0.3;
- and in the calculation, P, N, and B are respectively substituted with the numerical value before the percent sign in the mass percentage of the corresponding chemical element;
- and
- wherein the hot-rolled steel plate has a microstructure of ferrite and pearlite, and the ferrite has an average grain size at grade 10-12, as determined in accordance with GB/T 6394-2017.
12 more elements
Dependencies are inferred from the claim text.