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Steel surface modification structure formed through zinc-nickel infiltrated layer and preparation method for steel surface modification structure

A steel surface modification technology, which is applied in the field of steel modification structure, can solve the problems that the anti-corrosion requirements cannot be met, the corrosion resistance of the anti-corrosion layer cannot meet the anti-corrosion requirements, and the hardness is low.

Active Publication Date: 2017-02-15
CHONGQING DAYOU SURFACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are a variety of anti-corrosion technologies, which have alleviated the problem of steel corrosion, but they still cannot meet people's needs for anti-corrosion.
The corrosion resistance of the anti-corrosion layer prepared by the current anti-corrosion technology can not meet people's requirements for anti-corrosion, and the hardness is relatively low

Method used

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  • Steel surface modification structure formed through zinc-nickel infiltrated layer and preparation method for steel surface modification structure
  • Steel surface modification structure formed through zinc-nickel infiltrated layer and preparation method for steel surface modification structure
  • Steel surface modification structure formed through zinc-nickel infiltrated layer and preparation method for steel surface modification structure

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Embodiment 1

[0048] see figure 2 , is a metallographic cross-sectional view of the non-quenched-tempered 45 steel provided by the present invention after surface modification treatment. In this embodiment, the steel matrix is ​​45 steel in medium carbon steel, and the surface modification process of the non-quenched-tempered 45 steel is as follows:

[0049] In this embodiment, the steel matrix is ​​medium carbon steel, specifically, the medium carbon steel is 45 steel, and the surface modification process is as follows:

[0050] Firstly, pretreatment is carried out on the surface of the steel substrate, which specifically includes carrying out alkali washing, degreasing and shot blasting derusting on the steel substrate. The specific steps of alkali washing degreasing and shot blasting rust removal have been described above, and will not be repeated here.

[0051] Then configure the penetrating modifier. In this embodiment, the penetrating modifier is in the form of powder as a whole, a...

Embodiment 2

[0057] Please also see Figure 3-Figure 7 ,in image 3 It is the metallographic cross-sectional view of the quenched-tempered 45 steel provided by the present invention after surface modification treatment; Figure 4 It is the metallographic cross-sectional view of the quenched-tempered 42CrMoA steel provided by the present invention after surface modification treatment; Figure 5 It is the metallographic cross-sectional view of the quenched-tempered 35CrMo steel provided by the present invention after surface modification treatment; Image 6 It is the metallographic cross-sectional view of the quenched-tempered 35VB steel provided by the present invention after surface modification treatment; Figure 7 It is a metallographic cross-sectional view of the quenched-tempered 40Cr steel provided by the present invention after surface modification treatment.

[0058] In this embodiment, the steel base is medium carbon steel or medium carbon alloy steel. Specifically include 45 s...

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Abstract

The invention discloses a steel surface modification structure which is formed through a zinc-nickel infiltrated layer and has high corrosion resistance. The steel surface modification structure is a corrosion-resistant alloy structure formed on the surface of a steel substrate. The steel surface modification structure with the high corrosion resistance comprises an alloy deposition layer and a metal diffusion layer sequentially from the surface to the inside. The steel substrate is medium carbon steel or medium carbon low alloy steel. The alloy deposition layer is a zinc-iron compound. The diffusion layer comprises ferrite, pearlite and a quenching and tempering structure. The carbon content of the steel substrate is between 0.30% and 0.65%. The micro vickers hardness of the steel surface modification structure with the high corrosion resistance is between 240 and 500. The steel surface modification material provided by the invention has a very good corrosion resistant effect, and loss caused by steel corrosion can be reduced. Meanwhile, the invention further provides a preparation method for the steel surface modification structure formed through the zinc-nickel infiltrated layer.

Description

technical field [0001] The invention relates to a steel modified structure, in particular to a steel surface modified structure with high corrosion resistance and a preparation method thereof. Background technique [0002] Corrosion of steel has brought huge losses to the world, according to relevant reports. The steel materials scrapped due to corrosion in the world are equivalent to more than 20% of the annual production, and the value of the loss is about 700 billion US dollars. It far exceeds the sum of losses caused by natural disasters such as earthquakes, floods, and typhoons. At present, there are a variety of anti-corrosion technologies, which have alleviated the problem of steel corrosion, but they still cannot meet people's needs for anti-corrosion. The corrosion resistance of the anti-corrosion layer prepared by the current anti-corrosion technology can not meet people's requirements for anti-corrosion, and the hardness is relatively low. Among them, the workp...

Claims

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Application Information

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IPC IPC(8): C23C10/52
CPCC23C10/52C23C10/02C23C10/60C23C28/02C23C28/021C23C28/023C23C28/025C23C10/36
Inventor 任玉中
Owner CHONGQING DAYOU SURFACE TECH
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