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A kind of preparation method of zn-al-ni anticorrosion functional seepage 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 breakage of screwing and high cost, and achieve easy Industrial mass production, recyclable powder, good production stability

Active Publication Date: 2020-08-14
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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  • Summary
  • 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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  • A kind of preparation method of zn-al-ni anticorrosion functional seepage layer
  • A kind of preparation method of zn-al-ni anticorrosion functional seepage layer
  • A kind of preparation method of zn-al-ni anticorrosion functional seepage layer

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Effect test

Embodiment 1

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

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

[0032] 2) Penetration agent configuration: permeation 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 content is 30% La, 55% Ce and 15% Nb composition), Al 2 o 3 48.48 parts of powder (200 mesh) were weighed respectively and stirred and mixed evenly with a powder mixer, and 0.02 part of a...

Embodiment 2

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

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

[0039]2) Penetration agent configuration: permeation agent formula (100 parts in total): 35 parts of zinc powder (400 mesh), 15 parts of aluminum powder (325 mesh), 1.5 parts of nickel powder (400 mesh), 0.5 part of rare earth (400 mesh) (Mass percentage content is 30% La, 52% Ce and 18% Nb composition), Al 2 o 3 47.98 parts of powder (200 mesh) were weighed respectively and stirred and mixed evenly with a powder mixer, and 0.02 part of...

Embodiment 3

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

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

[0046] 2) Penetration agent configuration: permeation 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 orders) were weighed respectively and stirred and mixed evenly with a powder mixer, and 0.02 parts of ...

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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 seepage 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 put forward for bolts as connecting parts. However, the problem of major accidents due to bolt corrosion has followed It happened frequently all over the world and caused huge losses. Therefore, the research on the corrosion resistance of fastener bolts has become a hot spot in today's bolt research. 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 treatment, organic coatings and different composite coatings. Compared with powd...

Claims

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Application Information

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Patent Type & Authority Patents(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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