Anti-corrosion galvanized steel sheet and preparation method thereof

A galvanized steel plate, anti-corrosion technology, applied in coating, metal material coating technology, etc., can solve the problems of steel plate losing anti-corrosion effect, short anti-corrosion time, etc., to achieve increased anti-corrosion performance, not easy to remove, and good economic benefits Effect

Inactive Publication Date: 2022-01-28
安徽荣起安防科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing galvanized steel plate is coated with an anti-corrosion zinc layer on the surface of the steel plate after the steel plate is processed. The simple anti-corros...

Method used

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Examples

Experimental program
Comparison scheme
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preparation example Construction

[0038] A method for preparing an anti-corrosion galvanized steel sheet, comprising the following steps:

[0039] Step 1: Prepare the steel plate,

[0040] Specifically, 1.1: The steel plate ingredients are heated and smelted according to the proportion, and then cooled and cast to obtain the casting blank; that is, according to (15-30)% carbon, (18-70)% silicon, (10-25)% manganese, (5- 20)% aluminum, (5-30)% chromium, (10-20)% molybdenum, (15-30)% titanium, (5-10)% aluminum sulfide, (0.1-0.5)% sulfur, (0.8-1 )% boron, (0.1-0.5)% phosphorus, and the balance is iron. The ingredients are stirred evenly and added to the melting furnace, and melted at a temperature of about 2000 ° C. After each ingredient is melted, it is cooled to obtain a casting embryo;

[0041] 1.2: Hot-roll the cast billet at 1300-1350°C for 1-1.5 hours, then at 1150-1200°C for 1-1.5 hours, then at 1250-1300°C for 1-1.5 hours; The resulting steel billet is more stable;

[0042] 1.3. Cool the hot-rolled bill...

Embodiment

[0062] Prepare the galvanized steel sheet of the present invention, specifically:

[0063] Weigh 15kg carbon, 29kg silicon, 10kg manganese, 5%kg, 5kg chromium, 10kg molybdenum, 15%kg, 5kg aluminum sulfide, 1kg sulfur, 8kg boron, 1kg phosphorus, 1kg iron;

[0064] First: prepare the steel plate,

[0065] 1.1: The steel plate ingredients are heated and smelted according to the ratio, and then cooled and cast to obtain the casting embryo; that is, according to 15kg carbon, 29kg silicon, 10kg manganese, 5%kg, 5kg chromium, 10kg molybdenum, 15%kg, 5kg aluminum sulfide, 1kg sulfur, 8kg of boron, 1kg of phosphorus, 1kg of iron, stir the ingredients evenly, put them into the melting furnace, and melt them at a temperature of about 2000°C, or stir them after melting, and wait until the ingredients are melted and cooled to obtain cast iron. Embryo;

[0066] 1.2: Hot rolling the cast billet at 1350°C for 1.5 hours, then at 1200°C for 1.5 hours, then at 1300°C for 1.5 hours;

[0067] 1...

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Abstract

An anti-corrosion galvanized steel sheet comprises a steel sheet and a plating layer. The plating layer comprises a plating layer formed by a zinc plating solution and a passivation plating solution. The zinc plating solution comprises the following components in percentage by weight: (15-20)% of sodium hydroxide, (35-50)% of zinc oxide, (25-40)% of nanoscale zinc powder, (5-20)% of barium sulfate, (1-10)% of talcum powder, (1-10)% of a flatting agent and (1-10)% of calcium borate. The passivation plating solution comprises the following components in percentage by weight: (25-30)% of epoxy resin, (20-40)% of sodium benzoate, (15-30)% of cinnamic acid, (15-30)% of phosphoric acid, (5-30)% of vanadate, (15-20)% of triethanolamine and (5-10)% of a dispersing agent. According to the galvanized steel sheet, two plating layers are formed on the outer surface, so that the corrosion resistance of the steel sheet can be increased in a limited mode; and meanwhile, the preparation is easy, the corrosion-resistant coatings are stable and not prone to being removed, and good economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of preparation of galvanized steel sheets, in particular to an anti-corrosion galvanized steel sheet and a preparation method thereof. Background technique [0002] Galvanized steel sheet is a welded steel sheet with a hot-dip galvanized or electro-galvanized layer on the surface; the characteristic of galvanized steel sheet is that galvanizing can effectively prevent steel corrosion and prolong the service life; the thickness of galvanized thin steel sheet is 0.4-1.2mm, also known as galvanized iron sheet , commonly known as white iron sheet; galvanized steel sheet is widely used in construction, vehicles, home appliances, daily necessities and other industries. [0003] The existing galvanized steel plate is coated with an anti-corrosion zinc layer on the surface of the steel plate after the steel plate is processed. The simple anti-corrosion zinc layer has a short anti-corrosion time in daily use. Due to ...

Claims

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Application Information

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IPC IPC(8): C23C26/02C21D1/18C21D6/00C21D8/02C22C33/04C22C38/02C22C38/04C22C38/06C22C38/22C22C38/28C22C38/32C22C38/34C22C38/38C22C38/60C23C22/40
CPCC23C26/02C23C22/40C22C38/02C22C38/04C22C38/06C22C38/22C22C38/28C22C38/32C22C38/60C22C38/34C22C38/38C22C33/04C21D1/18C21D6/002C21D6/005C21D6/008C21D8/0205C21D8/0221C21D8/0247
Inventor 朱诚
Owner 安徽荣起安防科技有限公司
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