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Method for preparing iron-based material and zinc system alloy mechanically-bonded modified layer

A technology of iron-based material and modified layer, applied in metal material coating process, coating, solid-state diffusion coating, etc. Poor ability and other problems, to achieve the effect of shortening the time of zincizing, good protection effect and small deformation

Inactive Publication Date: 2019-04-16
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The uniformity of the coating thickness is not good, and even missing plating occurs
The bonding strength between the coating and the substrate is low, and the wear resistance is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing a mechanically bonded modified layer of an iron-based material zinc-based alloy, comprising the following steps:

[0033] (1) Use steel shots with a particle size of 0.8mm, a specification of G2, and a hardness of HV450 to perform shot blasting on iron-based materials at an air pressure of 0.7MPa to remove rust and impurities on the surface;

[0034] (2) a zinc foil material with a thickness of 15um attached to the surface of the cleaned iron-based material;

[0035] (3) using an electric heating device to heat the iron-based material with the zinc foil material attached to 300°C;

[0036] (4) Maintain the above temperature, use the steel shot with a particle size of 0.8mm, a specification of G2, and a hardness of HV450 to perform shot blasting on the heated material at an air pressure of 0.2MPa, so that the zinc foil material adheres to the iron-based material superior;

[0037] (5) The temperature is controlled at 250°C, and the material with ...

Embodiment 2

[0039] A method for preparing a mechanically bonded modified layer of an iron-based material zinc-based alloy, comprising the following steps:

[0040] (1) Use steel shots with a particle size of 0.8mm, a specification of G2, and a hardness of HV500 to perform shot blasting on iron-based materials at an air pressure of 0.7MPa to remove rust and impurities on the surface;

[0041] (2) a zinc foil material with a thickness of 20um attached to the surface of the cleaned iron-based material;

[0042] (3) using an electric heating device to heat the iron-based material with the zinc foil material attached to 320°C;

[0043] (4) Keep the above temperature, use the steel shot with a particle size of 0.8mm, a specification of G2, and a hardness of HV500 to perform shot blasting on the heated material at an air pressure of 0.2MPa, so that the zinc foil material adheres to the iron-based material superior;

[0044] (5) The temperature is controlled at 320°C, and the material with zinc...

Embodiment 3

[0046]A method for preparing a mechanically bonded modified layer of an iron-based material zinc-based alloy, comprising the following steps:

[0047] (1) Use steel shots with a particle size of 0.8mm, a specification of G2, and a hardness of HV550 to perform shot blasting on iron-based materials at an air pressure of 0.7MPa to remove rust and impurities on the surface;

[0048] (2) a zinc foil material with a thickness of 20um attached to the surface of the cleaned iron-based material;

[0049] (3) Using an electric heating device, heat the iron-based material with the zinc foil material to 350°C;

[0050] (4) Maintain the above temperature, use the steel shot with a particle size of 0.8mm, a specification of G2, and a hardness of HV550 to perform shot blasting on the heated material at an air pressure of 0.2MPa, so that the zinc foil material adheres to the iron-based material superior;

[0051] (5) The temperature is controlled at 400°C, and the material with zinc foil ma...

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Abstract

The invention relates to a method for preparing an iron-based material and zinc system alloy mechanically-bonded modified layer. The method comprises the steps that an iron-based material is subjectedto shot blasting treatment; a zinc foil material is attached to the surface of the cleared iron-based material; the iron-based material with the attached zinc foil material is heated; the heated material is subjected to shot blasting treatment; and the material with the attached zinc foil material is subjected to shot blasting treatment again, and thus the modified layer is formed. According to the method for preparing the iron-based material and zinc system alloy mechanically-bonded modified layer, the corrosion-resistant capability of the metal material in atmosphere, water, hydrogen sulfide and certain organic media can be improved, and the surface of a product can obtain hardness and abrasion resistance which are higher than the hardness and the abrasion resistance of electrogalvanizing and hot galvanizing; the treatment temperature is low, thus the mechanical property of the iron-based material can be kept, and the deformation amount of the iron-based material is very small; anda zinc impregnation layer and a matrix are subjected to metallurgical bonding, thus the zinc impregnation layer is quite difficult to peel off, the potential difference between the zinc impregnation layer and iron is smaller than the potential difference between zinc and iron, and the modified layer has a better protection effect when serving as an anodic protection layer.

Description

technical field [0001] The invention relates to the technical field of surface engineering, in particular to a method for preparing a mechanically bonded modified layer of an iron-based material zinc-based alloy. Background technique [0002] In the construction of various facilities, metal components are widely used. Under the influence of the surrounding medium, the metal will undergo chemical or electrochemical reactions, which will damage the metal material. This is metal corrosion. Corrosion will affect the appearance of metal components, reduce the Its mechanical properties affect its service life. Especially in the outdoor environment where equipment such as marine development, mining, transportation construction and infrastructure are located, harsh conditions such as acidic environment and soaking environment will make metal corrosion more serious. If the metal structural parts are corroded, resulting in a decrease in their strength and damage, in addition to the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C10/28C23C26/00
CPCC23C10/28C23C26/00
Inventor 高玉魁王瑞
Owner TONGJI UNIV
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