Metal surface treatment device and metal surface treatment method using same

A metal surface treatment and surface treatment technology, which is applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve the problems that the metal surface treatment technology has not been proposed, the metal surface treatment effect is small, and the treatment time is long. To achieve the effect of simplifying the structure, reducing the maintenance cost and reducing the required cost

Active Publication Date: 2015-08-26
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 same
  • Metal surface treatment device and metal surface treatment method using same
  • Metal surface treatment device and metal surface treatment method using same

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0106] Figure 12 It is a graph and an optical micrograph showing the surface treatment results 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, nitrogen is used as the treatment gas, 430 stainless steel is used as the target metal, and 1kg / cm 2 The partial pressure, under the temperature condition of 1100 ℃, carried out the surface treatment for 60 minutes. Furthermore, the hardness corresponding to the depth of the metal surface was measured while changing the separation distance between the target metal and the inner surface of the reaction chamber to 0.1 mm and 0.5 mm.

[0108] As shown in the graph, when the surface treatment was performed according to the metal surface treatment method of the present invention, it was confirmed that the hardness was significantly improved compared with the conventional general surface treatment method. That is, when t...

experiment example 2

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

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

[0114] Then, 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 when the experiment is performed at 1000°C or higher, a significant increase in hardness occurs compared to the result of the experiment at 900°C. That is, when the temperature of the target metal is 1000°C and 1100°C, the hard...

experiment example 3

[0119] Figure 14 It is a graph and an optical microscope photograph showing the surface treatment results 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, nitrogen is used as the treatment gas, 430 stainless steel is used as the target metal, and 1kg / cm 2 The surface treatment was performed for 10 minutes under the condition that the distance between the target metal and the inner surface of the reaction chamber was set to 0.1 mm.

[0121] Then, 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 a significant increase in hardness occurs at both 1100°C and 1200°C compared to conventional metal surface treatment methods. That is, when the temperature of the target metal is 1000° C. a...

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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 same, 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 A metal surface treatment device and a metal surface treatment method using the device. Background technique [0002] Cutting-edge composite processing technology is a promising technology in the future, and in this technology field, research and development are currently being carried out from various directions. It is applied to improve the performance of existing products or to develop new concept products. [0003] In addition, in the field of this cutting-edge composite processing technology, research on surface treatment technology for improving the surface properties of metals to enhance wear resistance, corrosion resistance, and fi...

Claims

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Application Information

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IPC IPC(8): C23C8/24C23C8/02C23C8/80
CPCC23C8/04C23C8/24
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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