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Surface anticorrosion treatment process of zinc alloy profile for guardrail

A technology of anti-corrosion treatment and zinc alloy, which is applied in the direction of metal material coating process, surface pretreatment, and device for coating liquid on the surface, etc. Insufficient moisture and heat resistance and other problems, to achieve the effect of high comprehensive strength, good weather resistance, and good salt spray resistance

Inactive Publication Date: 2019-03-26
博盾科技(浙江)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Zinc alloy profiles for guardrails are widely used in high-quality guardrails, but for some high-quality zinc alloy profile guardrails, the current zinc alloy profiles still have insufficient surface antifouling performance; salt spray resistance is not good enough; The heat and humidity performance is not good enough; the weather resistance is not good enough; the comprehensive strength is not high enough, which cannot meet the requirements of high-quality zinc alloy profile guardrails

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A surface anticorrosion treatment process for zinc alloy profiles for guardrails, comprising the following steps:

[0033] A. The first cleaning of the surface of zinc alloy profiles:

[0034] Pickle the surface of the zinc alloy profile from the hot-dip galvanizing section with dilute hydrochloric acid, then degrease the surface of the zinc alloy profile with a degreasing solution, and then rinse it with clean water for 2 to 5 minutes;

[0035] B. Zinc-rich phosphating on the surface of zinc alloy profiles:

[0036] Pass the zinc alloy profile through a zinc-manganese phosphating bath for zinc-rich phosphating;

[0037] C. The second cleaning of the surface of zinc alloy profiles:

[0038] Pickle the surface of the zinc alloy profile with dilute hydrochloric acid, and then rinse with water for 2 to 5 minutes;

[0039] D. Processing of the first coating on the surface of zinc alloy profiles:

[0040] Dry the surface of the zinc alloy profile, and use paint film equi...

Embodiment 2

[0051] A surface anticorrosion treatment process for zinc alloy profiles for guardrails, comprising the following steps:

[0052] A. The first cleaning of the surface of zinc alloy profiles:

[0053] Pickle the surface of the zinc alloy profile from the hot-dip galvanizing section with dilute hydrochloric acid, then degrease the surface of the zinc alloy profile with a degreasing solution, and then rinse it with clean water for 2 minutes;

[0054] B. Zinc-rich phosphating on the surface of zinc alloy profiles:

[0055] Pass the zinc alloy profile through a zinc-manganese phosphating bath for zinc-rich phosphating;

[0056] C. The second cleaning of the surface of zinc alloy profiles:

[0057] Pickle the surface of the zinc alloy profile with dilute hydrochloric acid, and then rinse it with water for 2 minutes;

[0058] D. Processing of the first coating on the surface of zinc alloy profiles:

[0059] Dry the surface of the zinc alloy profile, and use paint film equipment t...

Embodiment 3

[0071] A surface anticorrosion treatment process for zinc alloy profiles for guardrails, comprising the following steps:

[0072] A. The first cleaning of the surface of zinc alloy profiles:

[0073] Pickle the surface of the zinc alloy profile from the hot-dip galvanizing section with dilute hydrochloric acid, then degrease the surface of the zinc alloy profile with a degreasing solution, and then rinse it with clean water for 5 minutes;

[0074] B. Zinc-rich phosphating on the surface of zinc alloy profiles:

[0075] Pass the zinc alloy profile through a zinc-manganese phosphating bath for zinc-rich phosphating;

[0076] C. The second cleaning of the surface of zinc alloy profiles:

[0077] Pickle the surface of the zinc alloy profile with dilute hydrochloric acid, and then rinse it with water for 5 minutes;

[0078] D. Processing of the first coating on the surface of zinc alloy profiles:

[0079] Dry the surface of the zinc alloy profile, and use paint film equipment to ...

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Abstract

The invention discloses a surface anticorrosion treatment process of a zinc alloy profile for a guardrail. The surface anticorrosion treatment process comprises the following steps that A, the surfaceof the zinc alloy profile is cleaned for the first time; B, zinc-rich phosphorization is carried on the surface of the zinc alloy profile; C, the surface of the zinc alloy profile is cleaned for thesecond time; D, a first coating of the surface of the zinc alloy profile is processed; and E, a second coating of the surface of the zinc alloy profile is processed. The surface of the product obtained through the surface anticorrosion treatment process is smooth and clean, the smooth degree and naturality is good, the surface does not stain easily, the product can be naturally washed by rainwater, the salt spray resistance is good, the moisture and heat resistance is good, the weather fastness is good, and the comprehensive strength is high.

Description

technical field [0001] The invention relates to the field of metal surface treatment, in particular to a surface anticorrosion treatment process for zinc alloy profiles for guardrails. Background technique [0002] Guardrails - This refers to industrial "guardrails". Guardrails are mainly used for the protection and protection of personal safety and equipment and facilities in residences, highways, commercial areas, public places and other occasions. Guardrails are everywhere in our lives. Depending on the height of the guardrail, the price per meter of length will also vary. [0003] Zinc alloy is an alloy composed of zinc and other elements. Often added alloying elements are aluminum, copper, magnesium, cadmium, lead, titanium and other low-temperature zinc alloys. Zinc alloy has a low melting point, good fluidity, easy welding, brazing and plastic processing, corrosion resistance in the atmosphere, and the residual waste is easy to recycle and remelt; but the creep st...

Claims

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Application Information

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IPC IPC(8): B05D7/14B05D3/12B05D3/10C23F15/00C23G1/12C23C22/18
CPCB05D3/102B05D3/12B05D7/14B05D2202/30B05D2451/00B05D2504/00B05D2508/00C23C22/182C23F15/00C23G1/125B05D2420/01B05D2425/02B05D2420/02B05D2425/01
Inventor 梁勇军
Owner 博盾科技(浙江)股份有限公司