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A protective coating for ultra-high-strength steel and a preparation method for the ultra-high-strength steel protective coating

A technology for ultra-high-strength steel and protective coatings, applied in anti-corrosion coatings, fire-resistant coatings, coatings, etc., can solve problems such as poor high-temperature oxidation resistance, poor compactness, and inability to deform, and achieve high interface bonding strength and increase viscosity Effect

Active Publication Date: 2020-11-10
NANJING INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high temperature oxidation resistance of GI and GA coatings is poor
X-TEC coating cannot be deformed during heating and has poor corrosion resistance
Electroplating Zn-Ni coating has low production efficiency, high price and poor compactness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method for an ultra-high-strength steel protective coating, comprising the following contents:

[0038] Coatings are produced by:

[0039] With the water glass aqueous solution of 40 mass parts, the nano-aluminum powder of 20 mass parts, the nano-zinc powder of 15 mass parts, the nano-yttrium powder of 0.5 mass part, the carboxymethyl cellulose sodium of 3 mass parts, the boron carbide of 5 mass parts and 3 parts by mass of potassium fluoroborate were placed in a planetary ball mill for ball milling for 2 hours, the grinding speed was 100 rpm, and the mass concentration of the water glass aqueous solution was 3%.

[0040] The ultra-high-strength steel plate is cleaned of impurities, and the sundries and oil stains on the surface of the ultra-high-strength steel plate are removed. The specific process includes degreasing, rust removal and drying in sequence.

[0041] Spray the uniformly mixed paint onto the surface of the ultra-high-strength steel plate af...

Embodiment 2

[0045] A preparation method for an ultra-high-strength steel protective coating, comprising the following contents:

[0046] Coatings are produced by:

[0047] With the water glass aqueous solution of 50 mass parts, the nano-aluminum powder of 30 mass parts, the nano-zinc powder of 20 mass parts, the nano-yttrium powder of 1 mass part, the carboxymethyl cellulose sodium of 5 mass parts, the boron carbide of 10 mass parts and 3 to 5 parts by mass of potassium fluoroborate are placed in a planetary ball mill for 4 hours, the grinding speed is 200 rpm, and the mass concentration of water glass aqueous solution is 5%.

[0048] The ultra-high-strength steel plate is cleaned of impurities, and the sundries and oil stains on the surface of the ultra-high-strength steel plate are removed. The specific process includes degreasing, rust removal and drying in sequence.

[0049] Spray the uniformly mixed paint onto the surface of the ultra-high-strength steel plate after impurity removal...

Embodiment 3

[0053] A preparation method for an ultra-high-strength steel protective coating, comprising the following contents:

[0054] Coatings are produced by:

[0055] With the water glass aqueous solution of 45 mass parts, the nano-aluminum powder of 25 mass parts, the nano-zinc powder of 17 mass parts, the nano-yttrium powder of 0.8 mass part, the carboxymethyl cellulose sodium of 4 mass parts, the boron carbide of 7 mass parts and 4 parts by mass of potassium fluoroborate were placed in a planetary ball mill for ball milling for 3 hours, the grinding speed was 150 rpm, and the mass concentration of the water glass aqueous solution was 4%.

[0056] The ultra-high-strength steel plate is cleaned of impurities, and the sundries and oil stains on the surface of the ultra-high-strength steel plate are removed. The specific process includes degreasing, rust removal and drying in sequence.

[0057] Spray the uniformly mixed paint onto the surface of the ultra-high-strength steel plate af...

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Abstract

The invention discloses a protective paint for ultra-high-strength steel and a preparation method of an ultra-high-strength steel protective coating. The preparation method includecomprises the following steps: preparing the paint; removing impurities from an ultrahigh-strength steel sheet; spraying the paint to the surface of the impurity-removed ultrahigh-strength steel sheet through atomization, wherein the spraying amount of the paint is 0.2-0.3 kg / m<2>; curing the painted ultrahigh-strength steel sheet at the temperature of 120-150 DEG C for 4-6 h; subjecting the painted ultrahigh-strength steel sheet to plasma oxidation at the temperature of 600-620 DEG C, simultaneously injecting argon and oxygen with the pressure of 30-50 MPa according to the volume ratio of 2:1 to 4:1 during plasma oxidation, and preserving the temperature for 30-60 min. The protective paint and the preparation method have the advantages that the preparation process is simple, the quality is stable, a good cutprotection effect and a high temperature protection effect are achieved, and the surface has a superhydrophobic property.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a protective coating for ultra-high-strength steel and a preparation method for the ultra-high-strength steel protective coating. Background technique [0002] Due to its unique advantages in manufacturing cost and performance, ultra-high-strength steel has become the main way to realize the lightweight of automobiles. Compared with ordinary steel plates, ultra-high-strength steel plates have higher yield stress and tensile strength, but the hardening index, thickness anisotropy coefficient and elongation are all lower, the formability is poor, and the springback is difficult to control, and it is easy to break . Especially when the strength reaches 1300MPa, the current cold forming process can hardly complete the forming and manufacturing of ultra-high-strength steel components. In order to solve the problem of difficult forming of ultra-high-streng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/04C09D5/10C09D7/61C09D7/65B05D1/02B05D3/02
CPCB05D1/02B05D3/0254C09D1/04C09D5/106C09D5/18C09D7/61C09D7/65C09D7/67
Inventor 吕学鹏左源李琦王章忠李华冠
Owner NANJING INST OF TECH
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