A kind of rare earth alloy hot-dip coated steel plate and its production method

A technology of rare earth alloys and production methods, applied in hot-dip plating process, metal material coating process, coating, etc., can solve the problem of poor appearance, strength and other comprehensive properties, low bonding strength between coating and substrate, and inability to meet heavy corrosion protection, etc. problems, achieve the effect of flat and smooth coating surface, save manpower and equipment costs, and improve quality stability

CN110777316BActive Publication Date: 2021-11-23JINJIANG ANNENG BUILDING MATERIALS MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-11-23

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Abstract

The invention discloses a rare-earth alloy hot-dip coated steel plate and a production method thereof. The rare-earth alloy hot-dip coated steel plate includes a base steel plate and a rare-earth alloy hot-dip coat; the rare-earth alloy hot-dip coat covers the surface of the base steel plate; the rare-earth alloy hot-dip coat The composition of the composition contains by mass %: 0.1-0.8% magnesium, 0.05-0.15% aluminum, 0.002-0.090% lanthanum and vanadium, 0.03-0.09% nickel, 0.01-0.25% bismuth, 0.05-0.13% lead, and the rest includes Zinc and unavoidable impurities; among them, the mass ratio of lanthanum and vanadium is 1: (0.42-0.48). The rare earth alloy hot-dip coating of the present invention has high tensile bonding strength with the base steel plate; under the same coating thickness, the corrosion resistance of the traditional pure zinc coating has been greatly improved by more than 175%; and obtained The coating surface is very flat and smooth.
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Description

technical field

[0001] The invention relates to the field of steel plate coating and steel plate production methods, in particular to a rare earth alloy hot-dip coated steel plate and a production method thereof. Background technique

[0002] Metal parts of any type made of ferrous materials, more particularly parts made of steel, generally have applications requiring them to receive effective corrosion protection. In this regard, it is known practice to protect steel-based components from corrosion by galvanizing (galvanizing). In galvanizing, steel has a generally thin coating of zinc to protect the steel from corrosion. There are various galvanizing methods for galvanizing parts made of steel, in other words coating them with a metallic covering of zinc, including notably hot dip galvanizing, zinc metal spraying (zinc wire flame spraying), diffusion galvanizing (galvanizing), electrogalvanizing (electrolytic galvanizing), electroless galvanizing by means of zinc flake c...

Examples

Embodiment 1

[0048] A rare earth alloy hot-dip coating steel plate, comprising a base steel plate and a rare earth alloy hot-dip coating; the rare earth alloy hot-dip coating covers the surface of the base steel plate; the composition of the rare earth alloy hot-dip coating contains :

[0049] 0.1-0.8% magnesium, 0.05-0.15% aluminum, 0.002-0.090% lanthanum and vanadium, 0.03-0.09% nickel, 0.01-0.25% bismuth, 0.05-0.13% lead, and the remainder includes zinc and unavoidable impurities; among them, The mass ratio of lanthanum and vanadium is 1: (0.42-0.48).

[0050] Preferably, the composition of the rare earth alloy hot-dip coating contains in mass %:

[0051] 0.25-0.65% magnesium, 0.08-0.13% aluminum, 0.038-0.082% lanthanum and vanadium, 0.04-0.08% nickel, 0.11-0.21% bismuth, 0.07-0.12% lead, and the remainder includes zinc and unavoidable impurities; among them, The mass ratio of lanthanum and vanadium is 1:(0.44~0.47).

[0052] Preferably, the composition of the rare earth alloy hot-di...

Embodiment 2

[0067] A rare earth alloy hot-dip coating steel plate, comprising a base steel plate and a rare earth alloy hot-dip coating; the rare earth alloy hot-dip coating covers the surface of the base steel plate; the composition of the rare earth alloy hot-dip coating contains :

[0068] Magnesium 0.25%, aluminum 0.08%, lanthanum and vanadium 0.038%, nickel 0.04%, bismuth 0.11%, lead 0.07%, the rest includes zinc and unavoidable impurities; among them, the mass ratio of lanthanum and vanadium is 1:0.44.

[0069] In this embodiment, the base steel plate is 45 carbon steel plate.

[0070] In this embodiment, the composition of the rare earth alloy hot-dip coating is in mass%, and further contains:

[0071] Ce 0.085%.

[0072] In this embodiment, the composition of the rare earth alloy hot-dip coating is in mass%, and further contains:

[0073] Titanium 0.092%.

[0074] In this embodiment, the production method of the rare earth alloy hot-dip coated steel sheet includes the followin...

Embodiment 3

[0082] A rare earth alloy hot-dip coating steel plate, comprising a base steel plate and a rare earth alloy hot-dip coating; the rare earth alloy hot-dip coating covers the surface of the base steel plate; the composition of the rare earth alloy hot-dip coating contains :

[0083] Magnesium 0.65%, aluminum 0.13%, lanthanum and vanadium 0.082%, nickel 0.08%, bismuth 0.21%, lead 0.12%, the rest includes zinc and unavoidable impurities; among them, the mass ratio of lanthanum and vanadium is 1:0.47.

[0084] In this embodiment, the base steel plate is 45 carbon steel plate.

[0085] In this embodiment, the composition of the rare earth alloy hot-dip coating is in mass%, and further contains:

[0086] Ce 0.093%.

[0087] In this embodiment, the composition of the rare earth alloy hot-dip coating is in mass%, and further contains:

[0088] Titanium 0.110%.

[0089] In this embodiment, the production method of the rare earth alloy hot-dip coated steel sheet includes the followin...