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Metal surface treatment device and metal surface treatment method using the same

A metal surface treatment and surface treatment technology, applied in the field of metal surface treatment and metal surface treatment device, can solve the problems of metal surface treatment technology that has not yet been proposed, the effect of metal surface treatment is small, and the treatment time is long, so as to simplify the structure and reduce maintenance. cost, the effect of reducing the required cost

Active Publication Date: 2017-08-29
KOREA INST OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the method widely used in the industry is the low-temperature nitriding method, but this method requires a long processing time, resulting in a greatly reduced yield, and there is a problem that the effect of metal surface treatment is minimal
In particular, for stainless steel, there is also a problem that the nitriding energy decreases due to the natural oxide film
[0005] Therefore, a solution to the above-mentioned problems is required, but no metal surface treatment technology capable of obtaining excellent surface treatment quality while maintaining high productivity has been proposed so far.

Method used

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  • Metal surface treatment device and metal surface treatment method using the same
  • Metal surface treatment device and metal surface treatment method using the same
  • Metal surface treatment device and metal surface treatment method using the same

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0106] Picture 12 It is a graph and an optical microscope photograph showing the surface treatment result corresponding to the separation distance when the treatment gas is nitrogen in the metal surface treatment method of the present invention.

[0107] In this experiment, the processing gas is nitrogen, the target metal is 430 stainless steel, and the rate is 1kg / cm 2 The partial pressure of 1100 ℃ temperature conditions, 60 minutes of surface treatment. Furthermore, the distance between the target metal and the inner surface of the reaction chamber was changed to 0.1 mm and 0.5 mm, and the hardness corresponding to the depth of the metal surface was measured.

[0108] As shown in the graph, when the surface treatment is performed according to the metal surface treatment method of the present invention, it can be confirmed that a significant increase in hardness occurs compared with the conventional general surface treatment method. That is, when the distance between the target ...

experiment example 2

[0112] Figure 13 It is a graph and an optical microscope photograph showing the surface treatment result corresponding to temperature when the treatment gas is nitrogen in the metal surface treatment method of the present invention.

[0113] In this experiment, the processing gas is nitrogen, the target metal is 430 stainless steel, and the rate is 1kg / cm 2 Under the condition that the distance between the target metal and the inner surface of the reaction chamber was set to 0.1 mm, the surface treatment was performed for 60 minutes.

[0114] Furthermore, the temperature of the target metal was changed to 900°C, 1000°C, and 1100°C, and the hardness corresponding to the depth of the metal surface was measured.

[0115] As shown in the graph, it can be confirmed that a significant increase in hardness occurs when the experiment is performed at 1000°C or higher compared to the result when the experiment is performed at 900°C. That is, when the temperature of the target metal is 1000°C ...

experiment example 3

[0119] Figure 14 It is a graph and an optical microscope photograph showing the surface treatment result when the treatment time is set to be short when the treatment gas is nitrogen in the metal surface treatment method of the present invention.

[0120] In this experiment, the processing gas is nitrogen, the target metal is 430 stainless steel, and the rate is 1kg / cm 2 Under the condition that the distance between the target metal and the inner surface of the reaction chamber was set to 0.1 mm, the surface treatment was performed for 10 minutes.

[0121] Furthermore, the temperature of the target metal was set to high temperatures of 1100°C and 1200°C, and the hardness corresponding to the depth of the metal surface was measured.

[0122] As shown in the graph, it can be confirmed that the hardness increases significantly at 1100°C and 1200°C compared with the conventional metal surface treatment method. That is, when the temperature of the target metal is 1000° C. and 1100° C., b...

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Abstract

A metal surface treatment device, according to the present invention, is a metal surface treatment device which carries out surface treatment for a target metal heated at a temperature for which surface treatment is possible, the device comprising: a reaction chamber which has a shape corresponding to an outer shape of the target metal and is arranged within a certain interval from the outer side of the target metal, and which accommodates at least a part of the target metal; and a raw gas supply unit for supplying raw gas which is necessary for an autocatalytic reaction with the target metal accommodated within the reaction chamber. Furthermore, a metal surface treatment method using the same comprises the steps of: positioning a target metal within the reaction chamber, which has the shape corresponding to the outer form of the target metal and is arranged within a certain interval from the outer side of the target metal and which accommodates at least a part of the target metal; and forming a raw gas layer in the target metal through an autocatalytic reaction by supplying raw gas to the inside of the reaction chamber through the raw gas supply unit.

Description

Technical field [0001] The present invention relates to a metal surface treatment device and a metal surface treatment method using the device, and more particularly to forming a treatment gas layer according to an autocatalytic reaction on a target metal to obtain excellent wear resistance and corrosion resistance and high surface hardness The metal surface treatment device and the metal surface treatment method using the device. Background technique [0002] Cutting-edge composite processing technology is a technology with promising future prospects. In this technical field, research and development are being carried out from different directions recently. It is used to improve the performance of existing products or develop new concept products. [0003] In addition, in this cutting-edge composite processing technology field, research on surface treatment technologies for improving the surface properties of metals to enhance wear resistance, corrosion resistance, and fire resis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/24C23C8/02C23C8/80
CPCC23C8/24C23C8/04
Inventor 金准浩郑又沧车秉哲权阿朗曹亨镐
Owner KOREA INST OF IND TECH
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