High-strength anti-corrosive steel plate of heavy-duty storage rack and heat treatment technology of steel plate
A high-strength, steel plate technology, applied in the field of high-strength anti-corrosion steel plate and its heat treatment process, can solve the problems of low-temperature toughness of steel plate, thicker and thicker thickness requirements, and fracture of storage equipment, etc., to achieve good high plasticity and good transverse yield Strength, low-cost effect
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Embodiment 1
[0029]This embodiment is a high-strength anti-corrosion steel plate for heavy-duty shelves. The composition and mass percentage of the steel plate are: C: 0.45%, Mn: 0.27%, Cr: 2.8%, Si: 0.18%, Nb: 0.083%, V : 0.03%, Ti: 0.66%, Al: 0.53%, Cu: 0.09%, Mo: 0.13, lanthanide rare earth: 0.035%, the balance is Fe and unavoidable impurities; the total content of impurities ≤ 0.2%, of which, P≤0.015%, S≤0.007%, H≤0.004%, N≤0.006%, O≤45ppm;
[0030] The mass percentages of the lanthanide rare earth components are: cerium: 4%, europium: 5%, terbium: 10%, gadolinium: 15%, praseodymium: 12%, erbium: 15%, and the balance is lanthanum. The sum of the points is 100%;
[0031] The first phase in the steel plate is ferrite, the second phase is pearlite, the volume percentage of the second phase is 5.1% from the surface to 1 / 4 thickness, and the volume percentage of the second phase from 1 / 4 thickness to the center is 5.3%, And no bands.
[0032] The heat treatment process of the high-streng...
Embodiment 2
[0040] This embodiment is a high-strength anti-corrosion steel plate for heavy-duty shelves. The composition and mass percentage of the steel plate are: C: 0.48%, Mn: 0.28%, Cr: 3.4%, Si: 0.20%, Nb: 0.084%, V : 0.04%, Ti: 0.72%, Al: 0.55%, Cu: 0.12%, Mo: 0.14%, lanthanide rare earth: 0.041%, the balance is Fe and unavoidable impurities, the total content of impurities is ≤0.2%, of which , P≤0.015%, S≤0.007%, H≤0.004%, N≤0.006%, O≤45ppm.
[0041] The mass percentages of the lanthanide rare earth components are: cerium: 8%, europium: 7%, terbium: 11%, gadolinium: 18%, praseodymium: 14%, holmium: 2%, erbium: 18%, and the balance is Lanthanum, the sum of the above components is 100%;
[0042] The first phase in the steel plate is ferrite, the second phase is pearlite, the volume percentage of the second phase is 5.2% from the surface to 1 / 4 thickness, and the volume percentage of the second phase from 1 / 4 thickness to the center is 5.4%, And no bands.
[0043] The heat treatmen...
Embodiment 3
[0051] This embodiment is a high-strength anti-corrosion steel plate for heavy-duty shelves. The composition and mass percentage of the steel plate are: C: 0.49%, Mn: 0.29%, Cr: 3.9%, Si: 0.21%, Nb: 0.085%, V : 0.05%, Ti: 0.79%, Al: 0.57%, Cu: 0.15%, Mo: 0.15%, lanthanide rare earth: 0.043%, the balance is Fe and unavoidable impurities, the total content of impurities is ≤0.2%, of which , P≤0.015%, S≤0.007%, H≤0.004%, N≤0.006%, O≤45ppm.
[0052] The mass percentages of the lanthanide rare earth components are: cerium: 11%, europium: 10%, terbium: 13%, gadolinium: 22%, praseodymium: 15%, holmium: 4%, erbium: 20%, and the balance is Lanthanum, the sum of the above components is 100%;
[0053] The first phase in the steel plate is ferrite, the second phase is pearlite, the volume percentage of the second phase from the surface to 1 / 4 thickness is 5.3%, and the volume percentage of the second phase from 1 / 4 thickness to the center is 5.5%, And no bands.
[0054] The heat treatm...
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