High temperature resistant galvanized galvalume coating and preparation method thereof

A galvanized, high-temperature-resistant technology, applied in anti-corrosion coatings, fire-resistant coatings, coatings, etc., can solve the problems that the zinc stripping solution is easy to pollute the environment, and the zinc stripping residue is difficult to recover and cannot be completely solved, so as to achieve good zinc resistance Liquid corrosion ability, good anti-zinc and aluminum-zinc corrosion ability, low cost effect

Active Publication Date: 2021-12-10
靖江市黎明铸造材料厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method for zinc stripping, the stripping zinc solution is easy to pollute the environment, and the zinc stripping residue is difficult to recycle, resulting in a huge waste of zinc resources
In addition, the above-mentioned process cannot completely solve the problems of corrosion of sinking rolls and stabilizing rolls in the zinc pot and zinc pot and removal of the sticky zinc layer in the production of hot-dip galvanizing and hot-dip galvalume

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A high-temperature-resistant galvanized galvalume coating, which is composed of a base material and additives. The base material is composed of boron-rich slag powder with a mass fraction of 58%, zircon powder with 35% and alumina powder with 7%. The specific preparation process steps yes:

[0025] ①Grind the massive boron-rich slag with a size of 20-40mm×20-40mm×20-40mm in a ball mill to form 180-240 mesh boron-rich slag powder. The chemical composition mass fraction of boron-rich slag powder is: 22.17%B 2 o 3 , 49.08% MgO, 20.35% SiO 2 , 5.51% CaO, 2.65% Al 2 o 3 , TFe 0.24%, 58% mass fraction, boron-rich slag powder with a particle size of 180-240 mesh and 35% mass fraction of zircon powder with a particle size of 120-160 mesh and 7% mass fraction of alumina with a particle size of 280-350 mesh Mix the powder evenly to prepare the base material;

[0026] ② Add additives in sequence to the base material: 50-200nm graphite powder, sepiolite, 100-180μm chromium oxi...

Embodiment 2

[0029] A high-temperature-resistant galvanized galvalume coating consisting of a base material and additives. The base material is composed of boron-rich slag powder with a mass fraction of 55%, zircon powder with 37% and alumina powder with 8%. The specific preparation process steps yes:

[0030] ①Grind the massive boron-rich slag with a size of 20-40mm×20-40mm×20-40mm in a ball mill to form 180-240 mesh boron-rich slag powder. The chemical composition mass fraction of boron-rich slag powder is: 24.81%B 2 o 3 , 46.52% MgO, 19.99% SiO 2 , 6.28% CaO, 2.14% Al 2 o 3 , TFe 0.26%, 55% mass fraction, boron-rich slag powder with a particle size of 180-240 mesh and 37% mass fraction of zircon powder with a particle size of 120-160 mesh and 8% mass fraction of alumina with a particle size of 280-350 mesh Mix the powder evenly to prepare the base material;

[0031] ② Add additives in sequence to the base material: 50-200nm graphite powder, sepiolite, 100-180μm chromium oxide powde...

Embodiment 3

[0034] A high-temperature-resistant galvanized galvalume coating consisting of a base material and additives. The base material is composed of boron-rich slag powder with a mass fraction of 56%, zircon powder with 36% and alumina powder with 8%. The specific preparation process steps yes:

[0035] ①Grind the massive boron-rich slag with a size of 20-40mm×20-40mm×20-40mm in a ball mill to form 180-240 mesh boron-rich slag powder. The chemical composition mass fraction of boron-rich slag powder is: 23.07%B 2 o 3 , 49.08% MgO, 18.88% SiO 2 , 6.15% CaO, 2.50% Al 2 o 3 , TFe 0.32%, the mass fraction of 56%, particle size of 180-240 mesh boron-rich slag powder and mass fraction of 36%, particle size of 120-160 mesh zircon powder and mass fraction of 8%, particle size of 280-350 mesh alumina Mix the powder evenly to prepare the base material;

[0036] ② Add additives in sequence to the base material: 50-200nm graphite powder, sepiolite, 100-180μm chromium oxide powder, water gla...

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Abstract

The high-temperature-resistant galvanized galvalume coating and the preparation method thereof belong to the technical field of hot-dip galvanizing. It is mainly composed of base material and additives. The base material is composed of boron-rich slag powder with a mass fraction of 55‑58%, zircon powder with 35‑37% and alumina powder with 6‑8%. The additives are graphite powder and sepiolite , chromium oxide powder, water glass, carboxymethylcellulose CMC and water. Stir the base material and graphite powder in the mixer for 5-8 minutes first, then add sepiolite, carboxymethylcellulose CMC and chromium oxide powder, continue to stir in the mixer for 15-18 minutes, finally add water glass and water, Continue to stir in the mixer for 22‑25 minutes to obtain high temperature resistant galvanized galvalume coating.

Description

technical field [0001] The invention discloses a galvanized galvalume coating and a preparation method thereof, in particular to a high-temperature-resistant galvanized galvalume coating and a preparation method thereof, belonging to the technical field of hot-dip galvanizing. Background technique [0002] Hot-dip pure galvanized products and their alloying (such as hot-dip galvanized) products have excellent corrosion resistance, and the cost is relatively low. Comparable, so in the automotive and home appliances and construction fields have been widely used. At present, almost all Japanese cars use alloyed hot-dip galvanized sheets as outer panels, and the automobile manufacturing industries in Europe and the United States are also continuously increasing the use of hot-dip galvanized steel sheets. However, in the hot-dipping process of hot-dip galvanizing and hot-dip galvanized material production, due to the direct contact between the zinc liquid and the zinc pot, the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D7/61C09D7/65C09D5/08
CPCC09D7/65C09D1/00C09D5/08C09D5/18C09D7/61
Inventor 顾其荣顾鑫旺姚萍
Owner 靖江市黎明铸造材料厂
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