CN104060212A - Method for improving durability of steel surfaces - Google Patents
Method for improving durability of steel surfaces Download PDFInfo
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- CN104060212A CN104060212A CN201310095467.4A CN201310095467A CN104060212A CN 104060212 A CN104060212 A CN 104060212A CN 201310095467 A CN201310095467 A CN 201310095467A CN 104060212 A CN104060212 A CN 104060212A
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- steel
- weather resistance
- steel surface
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- plated film
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- Coating With Molten Metal (AREA)
Abstract
The purpose of the invention is to realize the improvement of durability of steel materials used in rigorous environment, especially boiler pipes or boiler plates, by a simple method. The method for improving durability of steel surfaces of the invention comprises: thermal spraying of corrosion-resistant self-fluxing alloy powder on a plated film on a steel surface processed by abrasive blasting, and re-fusing processing through high frequency induction heating.
Description
Technical field
The present invention relates to improve the corrosion proof method of steel surface.Further relate to and improve the duct member (hereinafter referred to as " boi1er tube ") that forms heat-transfer tube in various boilers, or formation is with the method for the surperficial weather resistance of the boiler components such as sheet material-tubing composition board (hereinafter referred to as " boiler plate ") of the furnace shell of cooling water channel.
Background technology
Steel are in being usually used in harsh environment.Particularly, in boi1er tube and boiler plate, in recent years, due to the high temperature of use temperature, require to have powerful solidity to corrosion and shock-resistance, therefore steel are intactly used and just become difficulty.Therefore, also start to have and use stainless steel tube, even use titanium pipe, but because its price is high, not formation scale is used.
Patent documentation 1: Unexamined Patent 8-143119 communique
Here, in patent documentation 1, propose by self-melting alloy thermospray the surface to works, after being then arranged in process furnace, the scheme of thermospray plated film is carried out in heating.But, need in the method huge process furnace, need in addition its inside to carry out even heat, therefore need a large amount of heats, implement unrealistic.
Summary of the invention
Therefore, the object of the present invention is to provide by easy method and realize the weather resistance that improves the steel that use under harsh environment.
The method of the weather resistance of improving steel surface of an embodiment of the invention is, by having the plated film of corrosion proof self-fluxing alloyed powder thermospray on the finished steel surface of abrasive blasting, by high-frequency induction heating, to melt processing again.
Thus, can be readily implemented in the construction on the surface of steel with corrosion proof plated film by easy equipment.In addition, because boundary portion at self-melting alloy coatings and steel forms metallurgical binding, so the surface of plated film also becomes smooth, and the structure of coatings becomes trickle, also eliminated the hole connecting, coatings become there is metallurgical binding, solidity to corrosion, wearability.
In addition,, in the method for the above-mentioned weather resistance of improving steel surface, above-mentioned steel are boi1er tube, or boiler plate.Thus, because boi1er tube or boiler plate require to have the weather resistance of height, therefore applicable the present invention is more suitable.
In addition, in the method for the above-mentioned weather resistance of improving steel surface, above-mentioned self-fluxing alloyed powder is Ni-Cr class.Thus, because self-fluxing alloyed powder is used Ni-Cr class, its construction temperature is lower, can in wide temperature range, construct, so it processes easily, and the possibility of damage steel reduces, therefore more suitable.
The method of improving the weather resistance of steel surface of the present invention, the plated film of corrosion proof self-fluxing alloyed powder thermospray on the finished steel surface of abrasive blasting will be there is, by high-frequency induction heating, melt again processing, can easily implement by easy equipment thus.And, thus, because the boundary portion at self-melting alloy coatings and steel forms metallurgical binding, therefore the surface of plated film also becomes smooth, the structure of coatings becomes trickle, has also eliminated the hole connecting, coatings become there is metallurgical binding, solidity to corrosion, wearability.
In addition,, owing to becoming the boi1er tube of object or the weather resistance that boiler plate requires to have height, therefore applicable the present invention is more suitable.
And then, owing to becoming the self-fluxing alloyed powder of plated film, using Ni-Cr class, its construction temperature is lower, can in wide temperature range, construct, so it processes easily, and the possibility of damage steel reduces, therefore more suitable.
Accompanying drawing explanation
Fig. 1 is the figure that the manufacturing process of steel of the present invention is shown.
Fig. 2 is the figure that the manufacturing process of steel of the present invention is shown.
Fig. 3 is the figure that the manufacturing process of steel of the present invention is shown
Embodiment
Below, referring to figs. 1 through Fig. 3, describe the method for improving the weather resistance of steel surface of the present invention in detail.
First, in the present embodiment, become the steel of the object that improves weather resistance for forming the steel plate 1 of the fundamental unit of furnace shell.And, by polylith steel plate 1 being connected and adjacent end welding being connected, form furnace shell.
Particularly, as shown in Figure 1, steel plate 1 will be for forming the 11(of the pipe portion tubing of cooling water channel) and the board 12(sheet material of formation connection section) alternately configured by the sheet material-tubing composition board being connected such as being welded to connect.And, on this steel plate 1 this steel surface, by formed plated film 2 by alloy material, use this steel plate 1.
Below, the method for plated film is carried out in the surface of above-mentioned steel plate 1 with alloy material, the method for improving the weather resistance of steel surface of the present invention describes.First, to forming the steel surface of steel plate 1, carry out abrasive blasting processing.Thus, remove getting rusty of surface, by enlarged surface, amass to improve the adhesivity of steel surface and alloy.
Then to the steel surface thermospray after abrasive blasting is processed, form as shown in Figure 2, the self-fluxing alloyed powder of plated film 2.At this moment, in the example of Fig. 2, be that one side one side of plate that only requirements such as part in stove is had to a weather resistance of height has been carried out the construction of self-fluxing alloyed powder, can certainly all construct to whole faces of plate.
Afterwards as shown in Figure 3, by having used the high-frequency induction heating apparatus 3 of ruhmkorff coil to carry out high-frequency induction heating, carry out molten processing the again of self-fluxing alloyed powder.Thus, on the surface of steel plate 1, form the layer of the plated film 2 with fixed thickness.
In addition, the thermal spraying treatment of above-mentioned self-fluxing alloyed powder and molten processing the again of being undertaken by high-frequency induction heating, used the device being widely known by the people to be undertaken by general approach.Therefore omit its detailed step.
Here, the self-fluxing alloyed powder of above-mentioned formation plated film 2, as be self-fluxing nature, without particular restriction, is particularly preferably and uses Ni-Cr class.Wherein, containing proportional, be more preferably, B is higher than 2.5 % by weight and below 4.0 % by weight, Si is higher than 4.0 % by weight and below 5.0 % by weight, C is below above 0.9 % by weight of 0.5 % by weight, Cr is that below above 17.0 % by weight of 12.0 % by weight, remainder is the powdered alloy of Ni and inevitable impurity.In addition, also can use and in Ni-Cr class, particularly contain tungsten, or Co class.
In addition, become the steel that carry out plated film object with alloy in above-mentioned, show for example the situation of the steel plate 1 of the fundamental unit that forms furnace shell, but can be also boi1er tube or other any steel.And, with alloy, steel being carried out to plated film, both can, only requiring the part with weather resistance highly to construct, also can construct to its integral body.
As implied above, according to the method for improving the weather resistance of steel surface of the present invention, can realize by easy equipment and easily implementing.And, because boundary portion at self-melting alloy coatings and steel forms metallurgical binding, so the surface of plated film also becomes smooth, and the structure of coatings becomes trickle, also eliminated the hole connecting, coatings become there is metallurgical binding, solidity to corrosion, wearability.
Particularly become the boi1er tube of object or the weather resistance that boiler plate requires to have height, therefore applicable the present invention is more suitable.
In addition, the self-fluxing alloyed powder that becomes plated film is used Ni-Cr class, and its construction temperature is lower, can in wide temperature range, construct, so it processes easily, and then the possibility of damage steel reduces, therefore more suitable.
Above, although the above-mentioned embodiment of reference etc. are illustrated the present application, the present application is not limited to above-mentioned embodiment.About the structure of the present application and in detail, in the scope of the present application, can carry out the intelligible various changes of those skilled in the art.
Detailed description of main elements
1 steel plate
11 pipe portions
12 boards
2 plated films
3 high-frequency induction heating apparatus
Claims (4)
1. improve a method for the weather resistance of steel surface, by thering is the plated film of corrosion proof self-fluxing alloyed powder thermospray on the finished steel surface of abrasive blasting, by high-frequency induction heating, melt again processing.
2. the method for improving the weather resistance of steel surface according to claim 1, is characterized in that:
Described steel are boi1er tube.
3. the method for improving the weather resistance of steel surface according to claim 1, is characterized in that:
Described steel are boiler plate.
4. the method for improving the weather resistance of steel surface according to claim 1, is characterized in that:
Self-fluxing alloyed powder is Ni-Cr class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310095467.4A CN104060212A (en) | 2013-03-22 | 2013-03-22 | Method for improving durability of steel surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310095467.4A CN104060212A (en) | 2013-03-22 | 2013-03-22 | Method for improving durability of steel surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104060212A true CN104060212A (en) | 2014-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310095467.4A Pending CN104060212A (en) | 2013-03-22 | 2013-03-22 | Method for improving durability of steel surfaces |
Country Status (1)
| Country | Link |
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| CN (1) | CN104060212A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112689685A (en) * | 2018-06-01 | 2021-04-20 | 株式会社荏原制作所 | Ni-Fe-based alloy powder and method for producing alloy coating film using same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103589A (en) * | 1985-05-20 | 1986-02-10 | 汪行恺 | The common heating furnace remelting processing of sprayed metal coating |
| CN2544087Y (en) * | 2002-05-30 | 2003-04-09 | 北京安东奥尔工程技术有限责任公司 | Wearing-resistant sucker rod coupling |
| CN1431336A (en) * | 2003-01-17 | 2003-07-23 | 西安交通大学 | Method for preparing nickel based self fluxing alloy coat on substrate of copper or copper alloy |
| CN102154609A (en) * | 2011-03-23 | 2011-08-17 | 北京矿冶研究总院 | Preparation method of high-precision roller wear-resistant coating |
-
2013
- 2013-03-22 CN CN201310095467.4A patent/CN104060212A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103589A (en) * | 1985-05-20 | 1986-02-10 | 汪行恺 | The common heating furnace remelting processing of sprayed metal coating |
| CN2544087Y (en) * | 2002-05-30 | 2003-04-09 | 北京安东奥尔工程技术有限责任公司 | Wearing-resistant sucker rod coupling |
| CN1431336A (en) * | 2003-01-17 | 2003-07-23 | 西安交通大学 | Method for preparing nickel based self fluxing alloy coat on substrate of copper or copper alloy |
| CN102154609A (en) * | 2011-03-23 | 2011-08-17 | 北京矿冶研究总院 | Preparation method of high-precision roller wear-resistant coating |
Non-Patent Citations (2)
| Title |
|---|
| 吴子健等编著: "《热喷涂技术与应用》", 31 January 2006, 机械工业出版社 * |
| 耐火制品模具设计与制作编写组编著: "《耐火制品模具设计与制作》", 30 November 1996, 地震出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112689685A (en) * | 2018-06-01 | 2021-04-20 | 株式会社荏原制作所 | Ni-Fe-based alloy powder and method for producing alloy coating film using same |
| CN112689685B (en) * | 2018-06-01 | 2022-05-10 | 株式会社荏原制作所 | Ni-Fe-based alloy powder and method for producing alloy coating film using same |
| US11597009B2 (en) | 2018-06-01 | 2023-03-07 | Ebara Corporation | Ni—Fe base alloy powder, and method for producing alloy coating using said Ni—Fe base alloy powder |
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Application publication date: 20140924 |
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