Preparation method of Zn-Al-Ni anticorrosion functional impregnation layer

A technology of zn-al-ni and infiltration layer, applied in coating, solid-state diffusion coating, metal material coating process, etc., can solve the problems of difficult screwing of bolts, easy damage of screwing, electro-galvanizing pollution, etc. Achieve the effects of easy industrialized mass production, recyclable powder, and controllable process parameters

Active Publication Date: 2019-01-04
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, hot-dip galvanizing is prone to zinc tumors, which leads to difficulty in screwing bolts; electro-galvanizing is seriously polluted and has hydrogen embrittlement problems; Dacromet's Cr 6+ Harmful to the human body and the environment; the surface phosphating treatment has general corrosion resistance, and oil is easy to pollute the surface of the equipment; the organic coating has poor wear resistance, and the bolts are easily damaged; the composite coating process is complicated and the cost is high
[0003] The traditional powder zinc sherardizing technology has been widely used in fastener methods, but with the development of industry and the emergence of various harsh natural environments, the traditional powder zinc sherardizing technology has become increasingly unsatisfactory for the anti-corrosion of fasteners need

Method used

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  • Preparation method of Zn-Al-Ni anticorrosion functional impregnation layer

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Embodiment 1

[0030] The Zn-Al-Ni anti-corrosion functional impregnation layer of the present embodiment is prepared by the following preparation process parameters and steps:

[0031] 1) Substrate treatment: Put the substrate into the ultrasonic cleaning device for cleaning for 20 minutes to remove the oil stain on the surface of the substrate. After the substrate is taken out and blown dry, the substrate is put into the shot blasting equipment, and the steel shot with a diameter of 0.2mm is used to The substrate is shot blasted for 10 minutes to remove the rust on the surface of the substrate;

[0032] 2) Infiltration agent configuration: According to the infiltration agent formula (100 parts in total): 35 parts of zinc powder (400 mesh), 15 parts of aluminum powder (325 mesh), 1 part of nickel powder (300 mesh), 0.5 part of rare earth (400 mesh) (Mass percentage is 30% La, 55% Ce and 15% Nb), Al 2 O 3 48.48 parts of powder (200 mesh) were respectively weighed and mixed evenly with a po...

Embodiment 2

[0037] The Zn-Al-Ni anti-corrosion functional impregnation layer of the present embodiment is prepared by the following preparation process parameters and steps:

[0038] 1) Substrate treatment: Put the substrate into the ultrasonic cleaning device for cleaning for 20 minutes to remove the oil stain on the surface of the substrate. After the substrate is taken out and blown dry, the substrate is put into the shot blasting equipment, and the steel shot with a diameter of 0.2mm is used to The substrate is shot blasted for 10 minutes to remove the rust on the surface of the substrate;

[0039]2) Infiltration agent configuration: According to the infiltration agent formula (100 parts in total): 35 parts of zinc powder (400 mesh), 15 parts of aluminum powder (325 mesh), 1.5 part of nickel powder (400 mesh), 0.5 part of rare earth (400 mesh) (Mass percentage is 30% La, 52% Ce and 18% Nb), Al 2 O 3 47.98 parts of powder (200 mesh) were respectively weighed and mixed evenly with a p...

Embodiment 3

[0044] The Zn-Al-Ni anti-corrosion functional impregnation layer of the present embodiment is prepared by the following preparation process parameters and steps:

[0045] 1) Substrate treatment: Put the substrate into the ultrasonic cleaning device for cleaning for 20 minutes to remove the oil stain on the surface of the substrate. After the substrate is taken out and blown dry, the substrate is put into the shot blasting equipment, and the steel shot with a diameter of 0.2mm is used to The substrate is shot blasted for 10 minutes to remove the rust on the surface of the substrate;

[0046] 2) Infiltration agent configuration: according to the infiltration agent formula (100 parts in total) 35 parts of zinc powder (400 mesh), 15 parts of aluminum powder (325 mesh), 2 parts of nickel powder (400 mesh), 0.5 part of rare earth (400 mesh) ( The mass percentage is composed of 33% La, 52% Ce and 15% Nb), Al 2 O 3 47.48 parts of powder (200 mesh) were respectively weighed and mixed...

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Abstract

The invention discloses a preparation method of a Zn-Al-Ni anticorrosion functional impregnation layer, in which such elements as Al and Ni are added into a zinc impregnation agent to change the organizational structure of the conventional zinc and aluminum impregnation layer prepared through mechanical energy aided impregnation. An impregnation agent is prepared according to the following ratio (based on a total number of 100 parts): 20-50 parts of zinc powders (an impregnation supplying agent), 5-25 parts of aluminum powders (an impregnation supplying agent), 0.5-5 parts of nickel powders (an impregnation supplying agent), 0.1-2 parts of ammonia chloride (an activating agent), 0.1-2 parts of rare earth (a catalyst), and of the balance of Al2O3 powders (a filler). The preparation method of the Zn-Al-Ni anticorrosion functional impregnation layer comprises the following steps: uniformly mixing the zinc powders, the aluminum powders, the nickel powders, the rare earth and the Al2O3 powders according to the ratio, and weighing the mixture for later use; and carrying out heat preservation for 3-5 hours under the following technical parameters: a heat preservation temperature of 450 DEG C, and an impregnation furnace rotation speed ranging from 5r / min to 7r / min. The preparation method provided by the invention has the advantages that a high quality of the impregnation layer is ensured through adopted particle diameters of the powders in the impregnation layer formula, and the prepared Zn-Al-Ni impregnation layer achieves low thickness, high surface compactness, high rigidity and excellent anticorrosion performance.

Description

technical field [0001] The invention relates to the technical field of powder galvanizing on metal surfaces, in particular to a method for preparing a Zn-Al-Ni anti-corrosion functional infiltration layer. Background technique [0002] In recent years, with the rapid development of production industries such as automobiles, aerospace, machinery, construction, and energy, higher requirements have been placed on bolts as connecting components. However, the subsequent problems of major accidents due to bolt corrosion are It occurs frequently all over the world, causing huge losses. Therefore, the research on the corrosion resistance of fastener bolts has become a hot spot in bolt research today. At present, the surface anti-corrosion treatment technologies of fastener bolts at home and abroad mainly include powder galvanizing, hot-dip galvanizing, electro-galvanizing, dacromet, surface phosphating, organic coatings and different composite coatings. Compared with powder sherar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C10/02C23C10/52C23C10/60
CPCC23C10/02C23C10/52C23C10/60
Inventor 魏世丞梁义周云龙王玉江王博田洪刚袁悦
Owner ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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