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Nanometer spraying process for iron guardrail

A kind of guardrail and nano technology, which is applied in coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problem that the painting process cannot meet the long-term use, and achieve the effect of good barrier properties and increased adhesion.

Pending Publication Date: 2021-06-08
日照中意华坤金属制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems in the prior art that the general painting process for the wrought iron guardrail cannot be used for a long time, the present invention provides a nano-spraying process for the wrought iron guardrail to solve the above problems

Method used

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  • Nanometer spraying process for iron guardrail
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Examples

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Effect test

Embodiment 1

[0028] A nano-spraying process for wrought iron guardrails, comprising the following steps:

[0029] (1) Treatment of the base surface of the guardrail: first remove the floating soil, oil stains, welding slag, burrs and other foreign matter on the surface of the guardrail, and then use the physical derusting method for surface derusting operation;

[0030] (2) Primer spraying: Spray one layer of zinc-rich primer on the treated metal structure surface by spraying, the zinc-rich primer includes the following components in parts by weight: 15 parts of bisphenol A epoxy resin, 12 parts of zinc phosphate, 21 parts of water, 2 parts of talcum powder, 7 parts of polyamide resin curing agent. Dry for 10 hours after spraying, and the paint film thickness is 30 μm.

[0031] (3) intermediate paint spraying: on the guardrail that step (2) is brushed with primer, brush one deck polyurethane coating; Described polyurethane coating comprises the following components of weight part: 1,6-hex...

Embodiment 2

[0034] A nano-spraying process for wrought iron guardrails, comprising the following steps:

[0035] (1) Guardrail base surface treatment: first remove floating soil, oil stains, welding slag, burrs and other foreign matter on the surface of the guardrail, and then use chemical derusting method for surface derusting operation, use 50% phosphoric acid solution to rust the base material surface pickling;

[0036] (2) Primer spraying: Spray one layer of zinc-rich primer on the treated metal structure surface by spraying, the zinc-rich primer includes the following components in parts by weight: 15 parts of bisphenol A epoxy resin, 12 parts of zinc phosphate, 21 parts of water, 2 parts of talcum powder, 7 parts of polyamide resin curing agent. Dry for 12 hours after spraying, and the paint film thickness is 40 μm.

[0037] (3) intermediate paint spraying: on the guardrail that step (2) is brushed with primer, brush one deck polyurethane coating; Described polyurethane coating co...

Embodiment 3

[0040] A nano-spraying process for wrought iron guardrails, comprising the following steps:

[0041] (1) Treatment of the base surface of the guardrail: first remove the floating soil, oil stains, welding slag, burrs and other foreign matter on the surface of the guardrail, and then use the physical derusting method for surface derusting operation;

[0042] (2) Primer spraying: Spray one layer of zinc-rich primer on the treated metal structure surface by spraying, the zinc-rich primer includes the following components in parts by weight: 15 parts of bisphenol A epoxy resin, 12 parts of zinc phosphate, 21 parts of water, 2 parts of talcum powder, 7 parts of polyamide resin curing agent. Dry for 11 hours after spraying, and the paint film thickness is 40 μm.

[0043] (3) intermediate paint spraying: on the guardrail that step (2) is brushed with primer, brush one deck polyurethane coating; Described polyurethane coating comprises the following components of weight part: 1,6-hex...

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Abstract

The invention relates to a nanometer spraying process for an iron guardrail, and belongs to the technical field of metal treatment. The nanometer spraying process comprises the following specific steps of: (1) guardrail base surface treatment: firstly, removing foreign matters such as surface dust, oil stains, welding slag and burrs on the surface of the guardrail, and then performing surface rust removal operation; (2) primer spraying: coating the surface of a treated metal structure with a layer of zinc-rich primer by a brushing or spraying method; (3) intermediate paint spraying: coating the guardrail coated with the primer in the step (2) with a layer of polyurethane paint; and (4) finish paint spraying: spraying the guardrail coated with the intermediate paint in the step (3) with a layer of fluorocarbon paint by a high-speed flame spraying method through a thermal spraying method. The iron guardrail treated by the spraying process for the iron guardrail can ensure that the paint surface cannot burst or fall off after long-time use; moreover, tests show that the phenomena such as color change cannot occur in a high-humidity and high-salinity environment.

Description

technical field [0001] The invention belongs to the technical field of metal treatment, and in particular relates to a nano-spraying process for iron guardrails. Background technique [0002] The application of wrought iron guardrail originated in Europe and has a long history of use. Wrought iron fence is a kind of wrought iron product used to isolate and block a specific space or object while achieving ornamental effects. Facing the improvement of people's quality of life, the use of wrought iron guardrails is increasing. Due to external factors such as wind, sun and sun, the existing wrought iron guardrails will obviously be corroded, which seriously affects the service life and ornamental quality of the wrought iron guardrails. Now the surface of the wrought iron guardrail is painted with anti-corrosion paint or hot-dip galvanized to overcome the defect that the guardrail is easy to be corroded. However, the use of general brushing or spraying methods can easily lead ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D1/38C09D163/00C09D5/08C09D175/04C09D127/12
CPCB05D7/14B05D7/584B05D1/38C09D163/00C09D5/08C09D175/04C09D127/12C08K2003/328B05D2504/00B05D2320/00B05D2350/00B05D2505/00B05D2506/10B05D2503/00
Inventor 郭刚
Owner 日照中意华坤金属制造有限公司
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