CN102776463A - Method for using novel iron-aluminum thermal-spraying powder core wire - Google Patents
Method for using novel iron-aluminum thermal-spraying powder core wire Download PDFInfo
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- CN102776463A CN102776463A CN2012102839430A CN201210283943A CN102776463A CN 102776463 A CN102776463 A CN 102776463A CN 2012102839430 A CN2012102839430 A CN 2012102839430A CN 201210283943 A CN201210283943 A CN 201210283943A CN 102776463 A CN102776463 A CN 102776463A
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Abstract
The invention discloses a method for using a novel iron-aluminum thermal-spraying powder core wire, which comprises the following steps: a) pre-treating base material; b) igniting the iron-aluminum core wire; c) implementing thermal spraying process; d) wearing to removing surface layer oxide; e) carrying out thermal treatment on the surface of the base material; and f) implementing grinding and polishing process. The method for using the novel iron-aluminum thermal-spraying powder core wire is disclosed by the invention; the method is characterized by reasonable working procedure arrangement, simple and convenient operation and low raw material consumption; a coating layer is subjected to metallurgical reaction completely in a using procedure, thereby being easier to prepare an iron-aluminum intermetallic compound; the prepared coating layer has excellent performances such as high-temperature vulcanization resistance, oxidation, high-temperature corrosion resistance and the like; and the coating layer is applied more widely.
Description
Technical field
The present invention relates to a kind of method of use of iron aluminium thermal spraying powder core silk, relate in particular to a kind of method of use that is easy to form the new sections aluminium thermal spraying powder core silk of intermetallic compound, belong to the metallic coating technical field.
Background technology
Intermetallic compound is a kind of between metal and pottery; Material with excellent high-temperature behavior, especially intermetallic Fe-Al compound not only have good anti-oxidant, anti-curability; Erosion resistance and higher high temperature strength; And do not contain the noble metal element, preparation cost is lower, has purposes very widely.Yet there is the big deadly defect of fragility in intermetallic compound, is difficult to machine-shaping, has hindered application development.The development that appears as intermetallic compound of arc spraying powder core wire material provides new opportunity; Utilize the powder cored filament material arc spraying technology on structured material, to obtain to contain the coating of intermetallic compound composition; Can avoid intermetallic Fe-Al compound machine-shaping difficulty; Can give full play to excellent properties such as its high temperature resistance sulfuration, oxidation and resistance to high temperature corrosion again, make it in industry, obtain large scale application, have a extensive future.
But the metallurgical reaction of the High Speed Electric Arc Spraying that present stage adopts obtains intermetallic compound coating, because the molten particles speed of cooling is too fast, metallurgical reaction is insufficient, and the coating of gained exists compounds content very little, defectives such as poor performance.Therefore, also need strong research, further improve its prescription, optimize silk material spraying coating process property and aftertreatment technology, improve the quality of sprayed coating intermetallic compound type powder cored filament material.
Summary of the invention
To the demand; The invention provides a kind of method of use of new sections aluminium thermal spraying powder core silk; This method of use is reasonable, and is easy and simple to handle, can make the coating metallurgical reaction abundant in the use; Be easier to make intermetallic Fe-Al compound, make coating have good excellent properties such as high temperature resistance sulfuration, oxidation and resistance to high temperature corrosion.
The present invention is a kind of method of use of new sections aluminium thermal spraying powder core silk, and this method of use comprises the steps: a) base material pre-treatment, b) lights iron aluminium core silk; C) implement thermospray; D) mill skim-coat oxide compound, e) substrate surface thermal treatment, f) sanding and polishing.
In the present invention's one preferred embodiment, in the described step a), the base material pretreatment process comprises skimming treatment and sandblasting; Grease-removing agent can be selected Pottasium Hydroxide for use; The sand material of sandblasting can be selected white fused alumina sand for use, and blasting pressure is 0.5-0.6MPa.
In the present invention's one preferred embodiment, in the described step b), use flame spray gun to light iron aluminium core silk, make the magnesium powder sufficient combustion under the effect of oxygenant chlorination potassium in the iron aluminium core-wire material material, the heat of release can make red stone and aluminium powder generation thermite reaction.
In the present invention's one preferred embodiment; In the described step c), adopt nitrogen as the spraying fluid, spray distance is controlled at 80-100mm; Angle is 90 °; Iron aluminium compound after the nitrogen fluid will burn is ejected into matrix surface with the speed of 100-120m/s, and the spray gun translational speed is 3-5mm/s, and matrix surface can form the film coating that thickness is about 350-400um.
In the present invention's one preferred embodiment, in the described step d), adopt the sand paper mill to remove the oxide compound of matrix surface, the oxide compound mill removes thickness and is about 100-120um.
In the present invention's one preferred embodiment; In the described step e); The substrate surface heat treatment mode is handled for the flame heating surface heat, and the spray gun raw material is selected oxy-acetylene for use, and the translational speed of spray gun is 1-1.5cm/s; The distance of its flame envelope and substrate surface is controlled at 5-10mm, and spray gun and substrate surface angle are 45 °.
In the present invention's one preferred embodiment, in the described step f), the sanding and polishing treatment process adopts shot-blast process, and it is the ceramic pellet about 300 orders that shot-peening is selected granularity for use, and the shot-peening pressure-controlling is at 0.08-0.1MPa.
The present invention has disclosed a kind of method of use of new sections aluminium thermal spraying powder core silk; This method of use procedure arrangement is reasonable, easy and simple to handle, and the starting material loss is low; The metallurgical reaction of use floating coat is abundant; Be easier to make intermetallic Fe-Al compound, the coating that makes has excellent properties such as high temperature resistance sulfuration, oxidation and resistance to high temperature corrosion, and coatings applications is more extensive.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation:
Fig. 1 is the block diagram of the method for use of the new sections aluminium thermal spraying of embodiment of the invention powder core silk.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
Fig. 1 is the block diagram of the method for use of the new sections aluminium thermal spraying of embodiment of the invention powder core silk; This method of use comprises the steps: a) base material pre-treatment, b) lights iron aluminium core silk, c) implements thermospray, d) mill skim-coat oxide compound, e) substrate surface thermal treatment, f) sanding and polishing.
Embodiment
It is following that the method for use of the new sections aluminium thermal spraying powder core silk that the present invention mentions specifically prepares process:
A) base material pre-treatment, the base material pre-treatment comprises skimming treatment and sandblasting; Wherein, for the irony body material, grease-removing agent can be selected Pottasium Hydroxide for use, and cooperates organic complexing agent as cleaning additive, and temperature is controlled at 25 ℃-30 ℃ during cleaning, cleans finish back flushing with clean water and oven dry; The sand material of sandblasting can be selected white fused alumina sand for use, and blasting pressure is 0.5MPa, is used to eliminate the zone of oxidation of substrate surface, and improves the surfaceness of base material, with the sticking power of enhancement coating;
B) light iron aluminium core silk; Use flame spray gun to light iron aluminium core silk; Make the magnesium powder fully burning under the effect of oxygenant chlorination potassium in the iron aluminium core-wire material material, the heat that magnesium powder burning back is discharged makes red stone and aluminium powder generation thermite reaction, and reduction generates Al2O3 and fe; At this moment, the staple of burning iron aluminium core silk later is Al2O3, fe and excessive aluminium powder; Wherein, the amount of aluminium powder that thermite reaction consumes is about the 55%-60% of aluminium powder total amount;
C) implement thermospray, implement in the thermal spray process, adopt nitrogen as the spraying fluid; Can prevent unnecessary aluminium powder and airborne oxygen generation chemical reaction; Spray distance is controlled at 80mm, and angle is 90 °, and the iron aluminium compound after the nitrogen fluid will burn is ejected into matrix surface with the speed of 120m/s; The spray gun translational speed is 3mm/s, and matrix surface can form the film coating that thickness is about 350um;
D) mill skim-coat oxide compound adopts sand paper gently to grind matrix surface, removes the oxide compound on top layer, and this oxide compound staple is Al2O3, and the thickness that grinds off oxide compound is about 100um, and when this operation helped substrate surface thermal treatment, material chemical combination changed more abundant;
E) substrate surface thermal treatment, the substrate surface heat treatment mode is handled for the flame heating surface heat, in this operation implementation process; The spray gun raw material is selected oxy-acetylene for use; The translational speed of spray gun is 1cm/s, and the distance of its flame envelope and substrate surface is 8mm, and spray gun and substrate surface angle are 45 °; Its main purpose is to make fe and aluminium powder generation combination reaction, to generate the Fe-Al intermetallic compound; The main of this Fe-Al intermetallic compound is Fe3Al fully, and Fe3Al has good toughness, high-temperature oxidation resistance, solidity to corrosion and thermohardening;
F) sanding and polishing; The sanding and polishing treatment process adopts shot-blast process, and it is the ceramic pellet about 300 orders that shot-peening is selected granularity for use, and the shot-peening pressure-controlling is at 0.1MPa; Shot peening can improve the top layer precision; Simultaneously can produce work hardening, improve surface strength and hardness, the coatingsurface roughness is 0.16um after the shot peening.
The present invention has disclosed a kind of method of use of new sections aluminium thermal spraying powder core silk; Be characterized in: this method of use procedure arrangement is reasonable, easy and simple to handle, and the starting material loss is low; The metallurgical reaction of use floating coat is abundant; Be easier to make intermetallic Fe-Al compound, the coating that makes has excellent properties such as high temperature resistance sulfuration, oxidation and resistance to high temperature corrosion, and coatings applications is more extensive.
The above; Be merely embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any those of ordinary skill in the art are in the technical scope that the present invention disclosed, and variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (7)
1. the method for use of a new sections aluminium thermal spraying powder core silk is characterized in that this method of use comprises the steps: a) base material pre-treatment; B) light iron aluminium core silk, c) implement thermospray, d) mill skim-coat oxide compound; E) substrate surface thermal treatment, f) sanding and polishing.
2. the method for use of new sections aluminium thermal spraying powder core silk according to claim 1 is characterized in that in the described step a), the base material pretreatment process comprises skimming treatment and sandblasting; Grease-removing agent can be selected Pottasium Hydroxide for use; The sand material of sandblasting can be selected white fused alumina sand for use, and blasting pressure is 0.5-0.6MPa.
3. the method for use of new sections aluminium thermal spraying powder core silk according to claim 1; It is characterized in that; In the described step b); Use flame spray gun to light iron aluminium core silk, make the magnesium powder sufficient combustion under the effect of oxygenant chlorination potassium in the iron aluminium core-wire material material, the heat of release can make red stone and aluminium powder generation thermite reaction.
4. the method for use of new sections aluminium thermal spraying powder core silk according to claim 1 is characterized in that, in the described step c); Adopt nitrogen as the spraying fluid; Spray distance is controlled at 80-100mm, and angle is 90 °, and the iron aluminium compound after the nitrogen fluid will burn is ejected into matrix surface with the speed of 100-120m/s; The spray gun translational speed is 3-5mm/s, and matrix surface can form the film coating that thickness is about 350-400um.
5. the method for use of new sections aluminium thermal spraying powder core silk according to claim 1 is characterized in that, in the described step d), adopts the sand paper mill to remove the oxide compound of matrix surface, and the oxide compound mill removes thickness and is about 100-120um.
6. the method for use of new sections aluminium thermal spraying powder core silk according to claim 1; It is characterized in that in the described step e), the substrate surface heat treatment mode is handled for the flame heating surface heat; The spray gun raw material is selected oxy-acetylene for use; The translational speed of spray gun is 1-1.5cm/s, and the distance of its flame envelope and substrate surface is controlled at 5-10mm, and spray gun and substrate surface angle are 45 °.
7. the method for use of new sections aluminium thermal spraying powder core silk according to claim 1; It is characterized in that in the described step f), the sanding and polishing treatment process adopts shot-blast process; It is the ceramic pellet about 300 orders that shot-peening is selected granularity for use, and the shot-peening pressure-controlling is at 0.08-0.1MPa.
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| CN2012102839430A CN102776463A (en) | 2012-08-10 | 2012-08-10 | Method for using novel iron-aluminum thermal-spraying powder core wire |
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| CN2012102839430A CN102776463A (en) | 2012-08-10 | 2012-08-10 | Method for using novel iron-aluminum thermal-spraying powder core wire |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105143494A (en) * | 2013-03-13 | 2015-12-09 | 费德罗-莫格尔公司 | Wear resistant piston ring coating |
| RU2772342C1 (en) * | 2021-09-10 | 2022-05-18 | Общество с ограниченной ответственностью "ВВСТ" | Method for depositing a heat-resistant coating based on iron aluminide on the surface of products operating in conditions of high-temperature gas corrosion |
| CN114959694A (en) * | 2022-06-27 | 2022-08-30 | 中南大学湘雅医院 | Stomach wall cutting machinery hand |
-
2012
- 2012-08-10 CN CN2012102839430A patent/CN102776463A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105143494A (en) * | 2013-03-13 | 2015-12-09 | 费德罗-莫格尔公司 | Wear resistant piston ring coating |
| RU2772342C1 (en) * | 2021-09-10 | 2022-05-18 | Общество с ограниченной ответственностью "ВВСТ" | Method for depositing a heat-resistant coating based on iron aluminide on the surface of products operating in conditions of high-temperature gas corrosion |
| RU2781578C1 (en) * | 2022-03-09 | 2022-10-14 | Общество с ограниченной ответственностью "ВВСТ" | Flux cored wire for deposition of a heat-resistant coating based on iron aluminide on the surface of items operating under conditions of high-temperature gas corrosion |
| CN114959694A (en) * | 2022-06-27 | 2022-08-30 | 中南大学湘雅医院 | Stomach wall cutting machinery hand |
| CN114959694B (en) * | 2022-06-27 | 2023-11-17 | 中南大学湘雅医院 | Abdominal wall cutting manipulator |
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Application publication date: 20121114 |