Hot-based spangle-free galvanized steel coil and production method thereof

A production method and technology of galvanized steel, which are applied in hot-dip plating process, coating, metal material coating process, etc., can solve the problem of difficult to meet the high strength and high corrosion resistance of photovoltaic brackets, and improve the corrosion resistance. and oxidation resistance, improve corrosion resistance, and ensure the effect of cleanliness

Active Publication Date: 2021-01-22
HEBEI IRON AND STEEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the existing hot-rolled coils are used as raw materials for hot-dip galvanizing, it is difficult to meet the requirements of high strength and high corrosion resistance of photovoltaic support materials, the present invention provides a heat-based zinc-free galvanized steel coil and its production method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A hot-based spangle-free galvanized steel coil, the chemical composition and mass percentage of the base plate of the galvanized steel coil are: C: 0.15%; Si: 0.03%; Mn: 0.68%; P: 0.02%; S: 0.004%; Als: 0.022%; Nb: 0.010%; V: 0.006%; Ti: 0.06%, and the balance is Fe and inevitable impurities.

[0026] The production method of the above-mentioned hot-based zinc-free galvanized steel coil, comprising the following steps:

[0027] S1: prepare molten iron, carry out converter smelting, LF refining and RH refining, and continuously cast the molten iron to obtain slabs;

[0028] S2: The obtained slab is passed through a hot rolling production line to obtain a hot rolled steel with a thickness of 1.8 mm;

[0029] S3: The obtained hot-rolled steel enters the continuous pickling process, and undergoes pickling, inspection, and coiling to obtain a pickling coil, wherein, in the continuous pickling process, the pickling tank is composed of three series-connected and mutually inde...

Embodiment 2

[0032] A hot-based spangle-free galvanized steel coil, the chemical composition and mass percentage of the base plate of the galvanized steel coil are: C: 0.18%; Si: 0.04%; Mn: 0.69%; P: 0.02%; S: 0.004%; Als: 0.026%; Nb: 0.010%; V: 0.007%; Ti: 0.056%, and the balance is Fe and inevitable impurities.

[0033] The production method of the above-mentioned hot-based zinc-free galvanized steel coil, comprising the following steps:

[0034] S1: prepare molten iron, carry out converter smelting, LF refining and RH refining, and continuously cast the molten iron to obtain slabs;

[0035] S2: The obtained slab is passed through a hot rolling production line to obtain a hot rolled steel with a thickness of 1.8 mm;

[0036] S3: The obtained hot-rolled steel enters the continuous pickling process, and undergoes pickling, inspection, and coiling to obtain a pickling coil, wherein, in the continuous pickling process, the pickling tank is composed of three series-connected and mutually ind...

Embodiment 3

[0039] A hot-based spangle-free galvanized steel coil, the chemical composition and mass percentage of the base plate of the galvanized steel coil are: C: 0.17%; Si: 0.07%; Mn: 0.7%; P: 0.014%; S: 0.002%; Als: 0.04%; Nb: 0.009%; V: 0.003%; Ti: 0.053%, and the balance is Fe and inevitable impurities.

[0040] The production method of the above-mentioned hot-based zinc-free galvanized steel coil, comprising the following steps:

[0041] S1: prepare molten iron, carry out converter smelting, LF refining and RH refining, and continuously cast the molten iron to obtain slabs;

[0042] S2: The obtained slab is passed through a hot rolling production line to obtain a hot rolled steel with a thickness of 2.0 mm;

[0043] S3: The obtained hot-rolled steel enters the continuous pickling process, and undergoes pickling, inspection, and coiling to obtain a pickling coil, wherein, in the continuous pickling process, the pickling tank is composed of three series-connected and mutually inde...

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Abstract

The invention relates to the technical field of metallurgy, and particularly discloses a hot-based spangle-free galvanized steel coil and a production method thereof. A base plate of the hot-based spangle-free galvanized steel coil comprises the chemical components of, in percentage by mass, 0.15%-0.18% of C, less than or equal to 0.1% of Si, 0.67%-0.7% of Mn, less than or equal to 0.02% of P, less than or equal to 0.01% of S, 0.022%-0.04% of Als, 0.009%-0.012% of Nb, 0.003%-0.007% of V, 0.048%-0.06% of Ti, and the balance Fe and inevitable impurities, wherein the weight of a zinc coating ranges from 600 g/m<2> to 620 g/m<2>. The hot-based spangle-free galvanized steel coil has high strength and corrosion resistance, the yield strength reaches 550-600MPa, the tensile strength reaches 635-700MPa, and the ductility is greater than or equal to 18%.

Description

technical field [0001] The invention relates to the technical field of metal coating, in particular to a hot-based zinc-free galvanized steel coil and a production method thereof. Background technique [0002] At present, solar photovoltaic brackets in the new energy industry are mainly made of aluminum alloy and hot-dip galvanized steel plate. Due to the low strength, easy deformation and poor bearing capacity of aluminum alloy brackets, they cannot be applied to large-scale solar photovoltaic power station brackets, and are generally used for battery frames. Or civil photovoltaic support. Galvanized steel sheet has stable performance, high bearing capacity and convenient installation, so it is widely used in civil, industrial photovoltaic and large-scale solar photovoltaic power station projects. [0003] Since large-scale photovoltaic power stations are mostly built in the wild with harsh environments, photovoltaic support materials must not only meet the anti-corrosion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/06C22C38/14C22C38/12C23C2/06C23C2/40
CPCC22C38/02C22C38/04C22C38/06C22C38/12C22C38/14C23C2/06C23C2/40
Inventor 唐嘉悦马占军吴一浩陈相东袁一男党文文
Owner HEBEI IRON AND STEEL
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