CN101250683A - Method for preparing heterogeneity metallic coating by arc spraying - Google Patents
Method for preparing heterogeneity metallic coating by arc spraying Download PDFInfo
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- CN101250683A CN101250683A CNA2008100468764A CN200810046876A CN101250683A CN 101250683 A CN101250683 A CN 101250683A CN A2008100468764 A CNA2008100468764 A CN A2008100468764A CN 200810046876 A CN200810046876 A CN 200810046876A CN 101250683 A CN101250683 A CN 101250683A
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Abstract
The invention relates to a method for using electric arc spraying to prepare dissimilar metallic coating, which belongs to the metal hot spraying field. The method comprises following steps: controlling the radius ratio of two wire feeding wheels to be 1:1-1:5 according to the difference of the melting point temperature value of metal wires which are transmitted by the two wire feeding wheels, adopting a wire feeding wheel with comparatively big diameter to transmit the metal wires with a comparatively low melting point, adopting the wire feeding wheel with comparatively small diameter to transmit the metal wires with a comparatively high melting point, guaranteeing that two species of metal wires with different melting points strike arcs to discharge electricity stably and an electric arc spraying works continuously and normally, and thereby obtaining functional electric arc spraying coating which is set to satisfy actual demands in industrial production, and the method of the invention has prominent advantages that single metal wire electric arcs can be directly adopted to prepare alloy coating or pseudo-alloy coating, the key problems which restrict the development of preparing special functional alloy or pseudo-alloy coating with an electric arc spraying method are broken through, and the method provides a practical and feasible method for more widely applying the electric arc spraying in the fields such as surface engineering, mechanical engineering and the like.
Description
Technical field
A kind of method with the electrical arc spraying method for preparing heterogeneity metallic coating of the present invention belongs to field of thermal spray, is specifically related to the metal wire material arc spray process.
Background technology
Electric arc spraying is a kind of hot-spraying techniques method that grows up at the end of the eighties, the beginning of the nineties.The outstanding feature of electric arc spraying is to use the electric energy of cleaning, and the efficiency height, environmentally safe, and the spray efficiency height, spray material utilization ratio height, the technology controllability is good, and is simple to operate.
Arc spray process is to adopt the wire-feeding wheel of two same radius, under the same rotational speed condition, carry two identical conductive wire materials continuously, when two one metal wire materials contact, under resistance heat and short-circuit current acting in conjunction, wire is melted, under the effect of the atomization air flow that nozzle sprays, be sprayed onto on the matrix simultaneously, thereby form the electric arc spraying layer of forming by metal wire material of the same race.
But, if under the wire-feeding wheel and same rotational speed condition of above-mentioned two same radius, conveying has two dissimilar metal silk materials of different melting points and functional performance, because the fusing point of two kinds of metal wire materials is inequality, then burn-off rate is inevitable inequality, refractory metal silk burn-off rate is slow, low-melting wire burn-off rate is fast, causes starting the arc instability, and arc spraying apparatus has and blows out, the current interruption phenomenon, so can not normally carry out spraying work, can not satisfy the needs of actual industrial production.
As mentioned above, because electric arc spraying at present can only adopt the silk material of two metals of the same race to spray, so can only obtain the sprayed coating of single metal of the same race.For example adopt two aluminium wire materials, electrical arc spraying method for preparing metallic aluminium coating adopts two zinc silk materials, electrical arc spraying method for preparing metallic zinc coating.Therefore, arc spray process is greatly limited in industrial application, particularly along with the industry and the development of technology, in mechanical engineering and Surface Engineering field, the kind of product and the requirement of quality are improved day by day, for example, when single spelter coating of electric arc spraying or single aluminum coating, can not satisfy industrial application, in the time of need preparing the functional aluminium zinc coating of zinc and these two kinds of different metals of aluminium with arc spray process, by present arc spray process, must zinc/aluminium alloy proportioning components at first on request make aluminium zinc, again aluminium zinc is drawn into the Zn-Al alloy wire material of certain diameter, adopts two identical Zn-Al alloy wire materials to carry out electric arc spraying then, could obtain the aluminium zinc arc spraying coating.But the aluminium zinc that is not zinc/al proportion arbitrarily can both be drawn into the functional Zn-Al alloy wire material that is suitable for electric arc spraying, even by adjusting zinc/al proportion, obtained the functional Zn-Al alloy wire material that is suitable for electric arc spraying, but, this functional alloying constituent that is suitable for the Zn-Al alloy wire material of electric arc spraying that is obtained but may not one satisfies the needs of functional coat composition surely.Therefore, electric arc spraying is faced with the challenge that the better dissimilar metal functional coat of over-all properties is provided.For example, require to provide not only to have excellent abrasive resistance but also have the coating of good antifriction quality, the coating etc. that not only has wear resistance but also have corrosion-resistant and high temperature oxidation resistance perhaps is provided with electric arc spraying.Face challenge like this, existing arc spray process then can not address the above problem.Undoubtedly, this problem becomes the biggest obstacle that current employing arc spray process prepares the dissimilar metal functional coat.Thereby also just make the wide application of arc spray process in fields such as mechanical engineering, Surface Engineering of a kind of like this less energy-consumption, high efficiency be subjected to great limitation.For this reason, must change arc spray process and can only adopt metal wire material of the same race, the present situation of the single metallic coating of spraying preparation must must be carried out innovative design to arc spray process, to satisfy the demand in diversification market.
Summary of the invention
The purpose of this invention is to provide a kind of method with the electrical arc spraying method for preparing heterogeneity metallic coating, solve present arc spray process and can only carry out metal wire material spraying of the same race, the problem of preparation single coating, thus satisfy the demand of Surface Engineering field to pluralistic function electric arc spraying layer.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method of the present invention with the electrical arc spraying method for preparing heterogeneity metallic coating, be under the wire-feeding wheel wire feed rotating speed prerequisite of setting, the difference of the melting temperature value of two kinds of metal wire materials carrying according to two wire-feeding wheels, the different radii ratio of control two wire-feeding wheels that arc spraying apparatus disposed, adopt the wire-feeding wheel of relatively large radius to carry relatively low melting point metals silk material, adopt the wire-feeding wheel of relative small radii to carry relative higher melt metal wire material, promptly control these two different radii wire-feeding wheels respectively and send into two kinds of feeding of metal wire speed of starting the arc region of discharge, thereby the metal wire material of guaranteeing two kinds of different melting points has been stablized the normal continuously operation of arc discharge and arc spraying apparatus in the arc district, obtain to satisfying the functional electric arc spray-on coating that the industrial production actual demand is set.
Realize that the present invention prepares the arc spraying apparatus of heterogeneity metallic coating method, comprise feed cable, just, negative potential, the atomization air flow jet pipe, nozzle, the wire wire drive feeder, two wire-feeding wheels, be characterized in controlling the wire-feeding wheel 1 of two wire-feeding wheels and the radius ratio of wire-feeding wheel 2 is 1: 1-1: 5, the speed that the relative refractory metal silk of being carried respectively by wire-feeding wheel 1 and wire-feeding wheel 2 with control 3 and relative low melting point metal silk 4 enter the arc district, guarantee the stability of these two kinds of wires in the starting the arc of starting the arc district, thereby obtain to press the functional electric arc spray-on coating of dissimilar metal that setting needs, when the melting temperature value of two kinds of metals being carried differed 200 ℃-800 ℃, controlling this two-wheeled radius ratio was 1: 1.1-2; When the melting temperature value of two kinds of metals being carried differed more than 800 ℃ below-1500 ℃, the radius ratio of controlling this two-wheeled was 1: 2-3; When the melting temperature value of two kinds of metals being carried differed more than 1500 ℃, the radius ratio of controlling this two-wheeled was 1: 3-5.
The present invention is to have solved present electric arc spraying with the outstanding technical progress of the method for electrical arc spraying method for preparing heterogeneity metallic coating can only adopt the single metallic coating of monometallic silk material spraying preparation of the same race, and the problem that can only prepare alloy coat with alloy wire spraying of the same race, can directly adopt xenogenesis monometallic silk material electrical arc spraying method for preparing alloy or pseudoalloy coating, break through the restriction arc spray process and prepared the crux difficult problem of specific functionality alloy or the development of pseudoalloy coating, for electric arc spraying in Surface Engineering, fields such as mechanical engineering practice widely, and practicable method is provided.
Description of drawings
Fig. 1 spray equipment structural representation of the present invention
Embodiment
How now further specify the present invention in conjunction with the accompanying drawings implements:
Realize the arc spraying apparatus that the inventive method adopted, be by setting needs, the wire-feeding wheel 1 of two wire-feeding wheels of control and the radius ratio of wire-feeding wheel 2 are 1: 1-1: 5, the speed that the relative refractory metal silk of being carried respectively by wire-feeding wheel 1 and wire-feeding wheel 2 with control 3 and relative low melting point metal silk 4 enter the arc district, guarantee of stability and this arc spraying apparatus continuously normal operation of these two kinds of wires, thereby obtain to satisfying the functional electric arc spray-on coating that the industrial production actual demand is set in the starting the arc of starting the arc district.
The iron/copper coating is the coating of a kind of not only wear-resisting but also anti-attrition, in order to obtain this coating, can adopt methods preparations such as plating, ion sputtering at present.But these method coating sedimentation effecies are low, cost is high, and we adopt the inventive method electrical arc spraying method for preparing iron/copper coating, and its technology is simple, and cost is low, and energy-conserving and environment-protective.The fusing point of iron is 1500 ℃, 1090 ℃ of the fusing points of copper, two kinds of metals all belong to materials with high melting point, the two fusing point differs 500 ℃, the radius ratio of the wire-feeding wheel of iron, copper is adjusted into 1.0: 1.1, and promptly the wire feed rate of copper wire material is 1.1 times of wire feed rate of iron wire material, so implements, spraying process is stable. obtain cupric 55.7%, iron content 44.3% iron/copper coating.
With present method electric arc spraying zinc-aluminum coating, 429 ℃ of the fusing points of zinc, 660 ℃ of the fusing points of aluminium, zinc, aluminium all belong to low melting point metal, the fusing point of the two differs less than 300 ℃, for this reason, adopting the radius ratio of wire-feeding wheel is 1: 1.1, and the wire-feeding wheel radius of metallic zinc silk material is slightly larger than the wire-feeding wheel radius of metal aluminum filament material, the normal continuously operation of arcing device, resulting zinc-aluminum coating, its aluminium content is 27.4%, the content of zinc is 72.6%.This coating has been passed through 2000 hours salt mist experiment, and is better than the antiseptic property of single spelter coating, single aluminum coating, now successful Application in antiseptic project.
Arc spraying aluminium-iron coating mainly is to be used to prepare wear-resisting magnetic hot merit energy coating.The fusing point of aluminium is 429 ℃, the fusing point of iron is 1500 ℃, the fusing point of aluminium and iron differs and has surpassed 1000 ℃, for this reason, when implementing electric arc spraying, it is 3: 1 that the radius ratio of aluminium, iron wire-feeding wheel is adjusted into, the wire feed rate of just controlling aluminium wire is 3 times of wire feed rate of iron wire, arcing device is normal continuously to be moved, and has obtained to contain the aluminium-iron coating of aluminium 50.9%, iron content 49.1%, for industrial production provides a kind of needed wear-resisting sprayed coating.
Electric arc spraying tin-tungsten coating mainly is to be used to prepare the hot high-temperature self-closing coating of magnetic.The fusing point of tin is 232 ℃, the fusing point of tungsten is 3500 ℃, the fusing point of tin and tungsten differs and has surpassed 3000 ℃, for this reason, when implementing electric arc spraying, it is 5: 1 that the radius ratio of tin, tungsten wire-feeding wheel is adjusted into, and the wire feed rate of just controlling the tin silk is 5 times of wire feed rate of tungsten filament, the normal continuously operation of arcing device is for industrial production provides a kind of high-temperature self-closing sprayed coating.Obtained the aluminium-iron coating of stanniferous 59.9%, tungstenic 40.1%
Claims (5)
1, a kind of method with the electrical arc spraying method for preparing heterogeneity metallic coating, be under the wire-feeding wheel wire feed rotating speed prerequisite of setting, the difference of the melting temperature value of two kinds of metal wire materials carrying according to two wire-feeding wheels, the different radii ratio of control two wire-feeding wheels that arc spraying apparatus disposed, adopt the wire-feeding wheel of relatively large radius to carry relatively low melting point metals silk material, adopt the wire-feeding wheel of relative small radii to carry relative higher melt metal wire material, promptly control these two different radii wire-feeding wheels respectively and send into two kinds of feeding of metal wire speed of starting the arc region of discharge, thereby the metal wire material of guaranteeing two kinds of different melting points has been stablized the normal continuously operation of arc discharge and arc spraying apparatus in the arc district, obtain to satisfying the functional electric arc spray-on coating that the industrial production actual demand is set.
2, arc spraying apparatus according to the preparation heterogeneity metallic coating method of claim 1, comprise feed cable, just, negative potential, the atomization air flow jet pipe, nozzle, wire wire drive feeder and two wire-feeding wheels, it is characterized in that controlling the wire-feeding wheel (1) of two wire-feeding wheels and the radius ratio of wire-feeding wheel (2) is 1: 1-1: 5, the speed that the relative refractory metal silk of being carried respectively by wire-feeding wheel (1) and wire-feeding wheel (2) with control (3) and relative low melting point metal silk (4) enter the arc district, guarantee of stability and the arc spraying apparatus continuously normal operation of these two kinds of wires in the starting the arc of starting the arc district, thereby obtain to press the functional electric arc spray-on coating of dissimilar metal that setting needs
3, according to the arc spraying apparatus of the preparation heterogeneity metallic coating method of claim 2, the radius ratio that it is characterized in that described control wire-feeding wheel (1) and wire-feeding wheel (2) is 1: 1-1: 5, when the melting temperature value of two kinds of metals being carried differed 200 ℃-800 ℃, controlling this two-wheeled radius ratio was 1: 1.1-2.
4, according to the arc spraying apparatus of the preparation heterogeneity metallic coating method of claim 2, it is characterized in that described control wire-feeding wheel (1) and wire-feeding wheel (2) radius ratio are 1: 1-1: 5, when the melting temperature value of two kinds of metals being carried differed more than 800 ℃ below-1500 ℃, the radius ratio of controlling this two-wheeled was 1: 2-3.
5, according to the arc spraying apparatus of the preparation heterogeneity metallic coating method of claim 2, the radius ratio that it is characterized in that described control wire-feeding wheel (1) and wire-feeding wheel (2) is 1: 1-1: 5, when the melting temperature value of two kinds of metals being carried differed more than 1500 ℃, controlling this two-wheeled radius ratio was 1: 3-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2008100468764A CN101250683B (en) | 2008-02-03 | 2008-02-03 | Method for preparing heterogeneity metallic coating by arc spraying |
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| CN2008100468764A CN101250683B (en) | 2008-02-03 | 2008-02-03 | Method for preparing heterogeneity metallic coating by arc spraying |
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| CN101250683B CN101250683B (en) | 2011-02-09 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184405A (en) * | 2011-12-31 | 2013-07-03 | 上海沪能防腐隔热工程技术有限公司 | Movable type automatic lifting metal spraying device for side surface spraying |
| CN103247362A (en) * | 2013-04-17 | 2013-08-14 | 隆科电子(惠阳)有限公司 | Base metal combined electrode of electronic ceramic part and preparation method of base metal combined electrode |
| CN104805392A (en) * | 2015-04-02 | 2015-07-29 | 河南平高电气股份有限公司 | Cooper-aluminum composite and preparation method |
| CN110230016A (en) * | 2019-06-03 | 2019-09-13 | 中国南方电网有限责任公司超高压输电公司柳州局 | A kind of preparation method of pore self-sealing anti-corrosion coating |
| CN110453215A (en) * | 2019-09-01 | 2019-11-15 | 陕西天元智能再制造股份有限公司 | A kind of bimetallic silk material laser melting coating system and method |
| EA039515B1 (en) * | 2019-12-23 | 2022-02-04 | Государственное Научное Учреждение "Объединенный Институт Машиностроения Национальной Академии Наук Беларуси" | Method for hardening a part of a sliding friction unit |
| CN115161586A (en) * | 2022-06-29 | 2022-10-11 | 九阳股份有限公司 | Method and cooker for arc spraying metal coating |
| CN115369351A (en) * | 2022-08-31 | 2022-11-22 | 国网福建省电力有限公司电力科学研究院 | Portable heterogeneous wire electric arc spray gun and spraying method |
-
2008
- 2008-02-03 CN CN2008100468764A patent/CN101250683B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184405A (en) * | 2011-12-31 | 2013-07-03 | 上海沪能防腐隔热工程技术有限公司 | Movable type automatic lifting metal spraying device for side surface spraying |
| CN103247362A (en) * | 2013-04-17 | 2013-08-14 | 隆科电子(惠阳)有限公司 | Base metal combined electrode of electronic ceramic part and preparation method of base metal combined electrode |
| CN103247362B (en) * | 2013-04-17 | 2016-02-03 | 隆科电子(惠阳)有限公司 | Base metal combination electrode of a kind of electronic ceramic component and preparation method thereof |
| CN104805392A (en) * | 2015-04-02 | 2015-07-29 | 河南平高电气股份有限公司 | Cooper-aluminum composite and preparation method |
| CN104805392B (en) * | 2015-04-02 | 2018-09-04 | 河南平高电气股份有限公司 | A kind of copper aluminum composite material and preparation method thereof |
| CN110230016A (en) * | 2019-06-03 | 2019-09-13 | 中国南方电网有限责任公司超高压输电公司柳州局 | A kind of preparation method of pore self-sealing anti-corrosion coating |
| CN110453215A (en) * | 2019-09-01 | 2019-11-15 | 陕西天元智能再制造股份有限公司 | A kind of bimetallic silk material laser melting coating system and method |
| EA039515B1 (en) * | 2019-12-23 | 2022-02-04 | Государственное Научное Учреждение "Объединенный Институт Машиностроения Национальной Академии Наук Беларуси" | Method for hardening a part of a sliding friction unit |
| CN115161586A (en) * | 2022-06-29 | 2022-10-11 | 九阳股份有限公司 | Method and cooker for arc spraying metal coating |
| CN115369351A (en) * | 2022-08-31 | 2022-11-22 | 国网福建省电力有限公司电力科学研究院 | Portable heterogeneous wire electric arc spray gun and spraying method |
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| CN101250683B (en) | 2011-02-09 |
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