CN107841702B - A kind of powder cored filament material and the method for preparing anticorrosive erosion thermal spray metal coating - Google Patents
A kind of powder cored filament material and the method for preparing anticorrosive erosion thermal spray metal coating Download PDFInfo
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- CN107841702B CN107841702B CN201710929512.XA CN201710929512A CN107841702B CN 107841702 B CN107841702 B CN 107841702B CN 201710929512 A CN201710929512 A CN 201710929512A CN 107841702 B CN107841702 B CN 107841702B
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
Abstract
The invention discloses a kind of powder cored filament material and the methods for preparing anticorrosive erosion thermal spray metal coating, belong to anticorrosion material technical field.The powder cored filament material is made of crust and powder core, and the crust is aluminium alloy crust, and the powder core is Ni powder, WC powder, ZrO2The alloyed powder of powder and Al powder composition；According to mass percent, each group is grouped as in the powder cored filament material are as follows: Ni powder 15%~25%, Al powder 5%~15%, WC powder and ZrO2Powder totally 3%~10%, surplus be Al alloy strip.When preparing anticorrosive, erosion thermal spray metal coating using the powder cored filament material, sandblasting pretreatment first is carried out to matrix surface, matrix surface after the pre-treatment prepares Al-Ni-WC-ZrO using high-speed arc spraying technology later2Coating.The Al-Ni-WC-ZrO prepared2Coating has the characteristics that bond strength is high, antiseptic property is excellent, surface hardness is high, is suitable for service demand of the down-hole equipment in " hydrogen sulfide corrosion+silt erosion " environment.
Description
Technical field
The present invention relates to anticorrosion material technical field, in particular to a kind of powder cored filament material and prepare that anticorrosive, erosion is hot
The method of spray metal coating.
Background technique
The drilling tools such as drilling rod underground be on active service, working environment is extremely severe, both faced drilling fluid, water flooding and hydrogen sulfide,
The electrochemistry and chemical attack of the strong corrosive medias such as carbon dioxide, and scleroid palisades abrasion is faced, therefore damage pole
It is serious.
Drilling rod is in drilling process, and due to the severe friction of drilling rod and stratum palisades, outer surface antirust paint is prone to wear out de-
It falls, loses protective effect, cause service life of the drilling rod in the harsh subsurface environment work such as hydrogen sulfide well below setting
Meter is horizontal, and many drilling rods have degraded use when not reaching projected life half.Metal coating is only used as the built-up welding of drilling rod at present
Wear-resistant strip can not solve drill pipe body etching problem.
Hot jet anti-corrosion method is usually used in the surfacecti proteon of carbon steel or steel alloy.In carbon steel (steel alloy)/aluminized coating system
In, aluminium is anode, can provide the electrochemical protection of sacrificial anode to steel matrix.Meanwhile the corrosion that aluminium is formed in corrosion process
Product can effectively block the micropore of metal coating surface, form " self-enclosed " effect, further function as the work of protection steel matrix
With.Thermal jet aluminized coating anti-H 2 S is functional, but hardness is lower, therefore under conditions of having silt erosion, thermal jet aluminized coating
Consumption is very fast, and service life is short.
Summary of the invention
The present invention provides a kind of powder cored filament material, is used to prepare anticorrosive, erosion thermal spray metal coating, solves aluminized coating
The fast technical problem of corrosion failure rate under " hydrogen sulfide corrosion+silt erosion " environment.
On the one hand, in order to solve the above technical problems, being made of the present invention provides a kind of powder cored filament material crust and powder core,
The crust is aluminium alloy crust, and the powder core is Ni powder, WC powder, ZrO2The alloyed powder of powder and Al powder composition；According to quality hundred
Divide ratio, each group is grouped as in the powder cored filament material are as follows: Ni powder 15%~25%, Al powder 5%~15%, WC powder and ZrO2Powder is total
3%~10%, surplus is Al alloy strip.
Further, the WC powder accounts for the WC powder and ZrO2The 10%~30% of powder gross mass.
Further, the filling rate of the powder core is 33%~35%.
Further, the Ni powder, WC powder, ZrO2The screen size of powder and Al powder is 50~80 mesh.
On the other hand, anticorrosive, erosion thermal spray metal painting is prepared using above-mentioned powder cored filament material the present invention provides a kind of
The method of layer, comprising:
Sandblasting pretreatment is carried out to matrix surface；
The powder cored filament material is sprayed to pretreated matrix surface using high-speed arc spraying technology, forms Al-Ni-
WC-ZrO2Coating, i.e., described anticorrosive, the erosion thermal spray metal coating.
Further, described matrix material is carbon steel or steel alloy.
Further, when carrying out the sandblasting pretreatment, control pressure be 0.7~0.8MPa, sandblasting angle be 70~
90 °, sandblasting distance is 150~200mm.
Further, the technological parameter of the High Speed Electric Arc Spraying are as follows: 0.7~0.8MPa of compressed air pressure, spraying electricity
Press 29~32V, 120~150A of spraying current, 180~200mm of spray distance.
Further, the Al-Ni-WC-ZrO2Coating with a thickness of 300~500 μm.
On the other hand, the present invention provides a kind of drilling tools, described including matrix and the coating for being sprayed on described matrix surface
Powder cored filament material High Speed Electric Arc Spraying described in coating use is made.
One or more technical solutions in the embodiment of the present application, have at least the following technical effects or advantages:
(1) powder cored filament material provided by the embodiments of the present application, be added in powder cored filament material alloy element and ceramic particle with
Enhance corrosion resistance coating and wearability, coating is made to have both the double grading of hydrogen sulfide corrosion resistant and silt erosion, effectively solves to bore
The aluminized coating on the down-hole equipments such as bar surface fast technology of corrosion failure rate under " hydrogen sulfide corrosion+silt erosion " environment is asked
Topic, to reduce the wear rate of coating, extend service life.
(2) anticorrosive, the erosion thermal spray metal coating of the embodiment of the present application preparation has bond strength height, anti-corrosive properties
Can be excellent, surface hardness is high the features such as；Prepared composite coating can be applied to the down-hole equipments anti-corrosion such as drilling rod, improve drilling tool
Service life.
Detailed description of the invention
Fig. 1 is the method flow diagram that anticorrosive erosion thermal spray metal coating is prepared in the embodiment of the present application；
Fig. 2 is Al-Ni-WC-ZrO prepared by the embodiment of the present application 12Electric arc spraying layer surface photomacrograph；
Fig. 3 is Al-Ni-WC-ZrO prepared by the embodiment of the present application 12Electric arc spraying layer cross section microstructure photo；
Fig. 4 is Al-Ni-WC-ZrO prepared by the embodiment of the present application 12Arc spray coatings soak in 5000ppm hydrogen sulfide water
Surface topography map after steeping 168h.
Specific embodiment
A kind of method that the embodiment of the present application provides powder cored filament material and prepares anticorrosive erosion thermal spray metal coating, solution
It has determined aluminized coating fast technical problem of corrosion failure rate under " hydrogen sulfide corrosion+silt erosion " environment, can be applied to underground
Drill tool corrosion protection, improves the service life of drilling tool.
In order to solve the above technical problems, the embodiment of the present application general thought is as follows:
This application provides a kind of powder cored filament materials, are made of crust and powder core, and the crust is aluminium alloy crust, the powder
Core is Ni powder, WC powder, ZrO2The alloyed powder of powder and Al powder composition；According to mass percent, each group is grouped in the powder cored filament material
Become: Ni powder 15%~25%, Al powder 5%~15%, WC powder and ZrO2Powder totally 3%~10%, surplus be Al alloy strip.
Since the application uses aluminium alloy for silk material crust, using Al as anti-corrosion phase matrix, Ni, WC are added in Al matrix
And ZrO2Alloying element and ceramic particle are conducive to the hydrogen sulfide corrosion-resistant performance and wear-resisting property that improve coating, thus effectively
Aluminized coating fast technical problem of corrosion failure rate under " hydrogen sulfide corrosion+silt erosion " environment is solved, can be used for underground brill
The corrosion protection of tool improves service life.
In order to better understand the above technical scheme, below by attached drawing and specific embodiment to technical scheme
It is described in detail, it should be understood that the specific features in the embodiment of the present application and embodiment are to the detailed of technical scheme
Thin explanation, rather than the restriction to technical scheme, in the absence of conflict, the embodiment of the present application and embodiment
In technical characteristic can be combined with each other.
On the one hand, the embodiment of the present application provides a kind of powder cored filament material, is made of crust and powder core, and the crust is aluminium conjunction
Golden crust, the powder core are Ni powder, WC powder, ZrO2The alloyed powder of powder and Al powder composition；According to mass percent, the powder core wire
Each group is grouped as in material are as follows: Ni powder 15%~25%, Al powder 5%~15%, WC powder and ZrO2Powder totally 3%~10%, surplus be
Al alloy strip.
In the embodiment of the present application, the WC powder accounts for the WC powder and ZrO2The 10%~30% of powder gross mass.
In the embodiment of the present application, the filling rate of the powder core is 33%~35%.Powder core filling rate is excessive to will cause powder core
Wire drawing is difficult in silk material preparation process, too small, be easy to cause silk material hollow.Appropriate Al powder is added in powder core can guarantee alloyed powder
It is sufficiently reacted with aluminium alloy crust.
In the embodiment of the present application, the Ni powder, WC powder, ZrO2The screen size of powder and Al powder is 50~80 mesh, described
Screen size refers to that particle can be by the screen size of sieve.Ni powder, WC powder, ZrO2The granularity of powder and Al powder is excessive or too small
It is unstable to will cause flame stream in spraying process, 50~80 meshes are crossed in specific implementation process to guarantee suitable granularity.Ni powder, WC
Powder, ZrO2Powder and Al powder are as powder core filler, and three must be sufficiently mixed, and three's granularity cannot have big difference, in order to avoid mixed
Occurs segregation during powder.
In the embodiment of the present application, it is Al alloy strip that band used in the crust, which is 1,.1 is that Al content is high in Al alloy, can be protected
Card has enough toughness after stretching.
Aluminium alloy crust and the effect of each component of powder core are as follows in powder cored filament material provided by the embodiments of the present application:
Al alloy strip: aluminium alloy can be in corrosion process as the metal lower than Fe electrode potential as silk material crust
Play the role of the cathodic protection of sacrificial anode to matrix steel, therefore is used Al as main phase.
Ni powder: Ni and Al are easily combined under the conditions of spraying high temperature and are formed intermetallic compound, and with heat release.It is formed
Intermetallic compound not only has good hydrogen sulfide corrosion-resistant performance, while heat release may additionally facilitate between spraying particle and matrix
More metallurgical bonding positions are formed, anchoring strength of coating is improved.The additive amount of Ni be not easy it is very few, be otherwise difficult to large area formed it is resistance to
Lose phase；The additive amount of Ni is also unsuitable excessive simultaneously, otherwise coating current potential can be caused to shuffle strongly, and the sacrificial anode for reducing Al is made
With.Therefore comprehensive to determine that its mass percentage in powder cored filament material is 15%~25%.
WC+ZrO2Powder: WC and ZrO2Hardness all with higher can serve as wear-resisting particle in Al base coating, improve coating
Shock resistance and erosion resistance, and (WC+ZrO2) mixed powder is more stable at high temperature, even if still can after pyrolytic coating
Original form is kept, the dusty material of spraying is well suited to.WC and ZrO2Combination is primarily due to the two atomic weight phase
It is poor little, segregation is less prone to during mixed powder.Replace ZrO with the relatively inexpensive WC in part simultaneously2, first is that advantageously reducing into
This is not easy to form local transition fusing in spraying process second is that two kinds of melting points are close.WC is in (WC+ZrO2) containing in powder
Amount should be controlled 10%~30%, (WC+ZrO2) powder mass percentage in powder cored filament material is advisable with 3%~10%, excessively
Ceramic particle is then not easy to melt, excessively few purpose that cannot then function well as enhancing coating hardness.
Al powder: Al powder is added and mainly considers in Ni powder and (WC+ZrO2) play the role of transition connection between powder.Due to
Ni, WC and ZrO2Fusing point is higher, if without Al powder combustion heat release wherein, Ni powder and (WC+ZrO2) powder be then not easy react and be in
Free state is present among coating.If Al powder is appropriate, dystectic Ni powder and (WC+ZrO can be made2) powder sufficiently reacts and molten
Change, and then guarantees that each mutually holding is uniform in coating.If Al powder is excessive, the addition of other alloy powders is directly affected, wave is caused
Take.According to the atomic quantity ratio that Ni powder and Al powder react, it is proper that the amount of Al powder, which is set as 5%~15%,.
The embodiment of the present application utilizes Ni powder and (WC+ZrO2) powder come improve coating hydrogen sulfide corrosion-resistant performance and resistance to silt punching
Corrosion energy considers the factors such as fusing point and the granularity of each powder, is designed using the powder cored filament material, can improve material to greatest extent
Utilization rate, and reduce the different influence of each material melting point to a certain extent.
Powder cored filament material in the embodiment of the present application is prepared using existing conventional method:
First by Ni powder, WC powder, ZrO2Powder and Al powder are uniformly mixed by design proportion, and the aluminium for getting out certain specification closes
Gold ribbon, band require certain thickness to keep its pull strength, by powder cored filament material molding machine by cutting out band, rolling
Band fills out the processes such as powder, sealing, wire drawing, finished product silk material, the technological parameter in silk material production process, with can continuous production and
There is not phenomena such as turning over band, disconnected band, fracture of wire to require.
On the other hand, based on the same inventive concept, the embodiment of the present application provides a kind of above-mentioned powder cored filament material of use and prepares
Anticorrosive, erosion thermal spray metal coating method, referring to FIG. 1, including:
Step S110: sandblasting pretreatment is carried out to matrix surface；
Described matrix material is carbon steel or steel alloy.Matrix surface before spraying must carry out blasting treatment, to reach clear
Clean and roughening requires.
When sandblasting, compressed air must clean drying, and pressure control is had using emergy or meet in 0.6~0.8MPa
Other abrasive materials as defined in closing, sandblasting angle are 70~90 °, and sandblasting distance is 150~200mm, and sandblasting requires matrix all to expose
Fresh surface, but blast time is unsuitable too long.The surface roughness of matrix will reach Sa2.5 grades of levels after sandblasting.
Step S120: the powder cored filament material, shape are sprayed to pretreated matrix surface using high-speed arc spraying technology
At Al-Ni-WC-ZrO2Coating, i.e., described anticorrosive, the erosion thermal spray metal coating.
High Speed Electric Arc Spraying, the technological parameter of High Speed Electric Arc Spraying are carried out using existing High Speed Electric Arc Spraying equipment are as follows:
0.7~0.8MPa of compressed air pressure, 29~32V of spray voltage, 120~150A of spraying current, 180~200mm of spray distance.
Compressed air pressure crosses conference and flame stream is caused not concentrated, and splash phenomena occurs；It is too small, flame stream cannot be made to reach required spray
Apply speed.Spray voltage crosses conference and causes silk material excessive evaporation, and silk material does not reach matrix also and already largely loses；Too small silk material is then
It is unable to the starting the arc.Spraying current crosses conference and causes silk material burning, influences to spray stability；Too small silk material cannot sufficiently melt, and influence
Coating performance.Spray distance cross conference cause silk material molten drop cannot sufficiently in conjunction with matrix steel, the anchoring strength of coating of formation compared with
It is low；It is too small, molten drop can be caused to splash, influence coating deposition.Comprehensively consider the interaction between each technological factor and mutual shadow
It rings, above-mentioned technological parameter has finally been determined, which can make flame stream the most stable, and coating compactness is preferable, can protect
Demonstrate,proving spray coating has high bond strength and low porosity.
The Al-Ni-WC-ZrO of formation2Coating with a thickness of 300~500 μm.The coating of spraying should have suitable thickness,
Coating is too thin cannot to function well as anticorrosion antiwear effect, too thick, easily cause stress concentration, cause under anchoring strength of coating
Drop.
The technical indicator of the powder cored filament material thermal spray metal coating of the embodiment of the present application:
Color appearance: brilliant white；
Stretch bond strength > 25MPa；
Porosity < 6%；
Coating layer thickness: 300~500 μm.
On the other hand, based on the same inventive concept, the embodiment of the present application provides a kind of drilling tool, including matrix and is sprayed on
The coating on described matrix surface, the coating are made using above-mentioned powder cored filament material by High Speed Electric Arc Spraying method.The drilling tool
The including but not limited to tool that is used under " hydrogen sulfide corrosion+silt erosion " environment such as drilling rod.
In order to enable those skilled in the art further to understand the scheme of the embodiment of the present invention, will be based below
The scheme that the embodiment of the present application is introduced describes to it in detail.
Embodiment 1
Take Ni powder, Al powder, WC powder and ZrO2Powder mixes in proportion after crossing 60 meshes, use specification for 10mm ×
The 1 of 0.4mm (width × thickness) is that Al alloy strip is band, and finished product silk material, the powder core filling rate of silk material is 33%, silk material
Diameter is 2mm.The 1 line aluminium alloy crust that crust uses with a thickness of 0.4mm, it is ensured that crust can still keep enough after the stretch
Intensity and toughness, wire feed is more smooth when in order to spray.
Powder cored filament material each group is grouped as follows:
The composition of alloy of the Al alloy strip is as follows:
Spraying ground is Q235 steel, and when sandblasting pretreatment, compressed air must clean drying, pressure control in 0.8MPa,
Using emergy, sandblasting angle is 80 °, and sandblasting distance is 160mm, and sandblasting requires matrix all to expose fresh surface, after sandblasting
The surface roughness of matrix reaches Sa2.5 grades, while requiring to complete to complete line-material coating in four hours in surface treatment；
Al-Ni-WC-ZrO is sprayed on Q235 steel matrix surface using conventional electric arc spraying equipment2Coating, technological parameter are as follows:
Compressed air pressure 0.8MPa, spray voltage 29V, spraying current 120A, spray distance 180mm, 350 μm of coating layer thickness.
Embodiment 2
Take Ni powder, Al powder, WC powder and ZrO2Powder mixes in proportion after crossing 80 meshes, use specification for 10mm ×
The 1 of 0.4mm (width × thickness) is that Al alloy strip is band, and finished product silk material, the powder core filling rate of silk material is 35%, silk material
Diameter is 2mm.
Powder cored filament material each group is grouped as follows:
The composition of alloy of Al alloy strip is the same as embodiment 1.
Spraying ground is 45 steel, and when sandblasting pretreatment, compressed air must clean drying, and pressure is controlled in 0.75MPa, adopted
With emergy, sandblasting angle is 70 °, and sandblasting distance is 150mm, and sandblasting requires matrix all to expose fresh surface, base after sandblasting
The surface roughness of body reaches Sa2.5 grades, while requiring to complete to complete line-material coating in four hours in surface treatment；
Al-Ni-WC-ZrO is sprayed on 45 steel matrix surfaces using conventional electric arc spraying equipment2Coating, technological parameter are as follows: pressure
Contracting air pressure 0.75MPa, spray voltage 30V, spraying current 150A, spray distance 190mm, 300 μm of coating layer thickness.
Embodiment 3
Take Ni powder, Al powder, WC powder and ZrO2Powder mixes in proportion after crossing 70 meshes, use specification for 10mm ×
The 1 of 0.4mm (width × thickness) is that Al alloy strip is band, and finished product silk material, the powder core filling rate of silk material is 33%, silk material
Diameter is 2mm.
Powder cored filament material each group is grouped as follows:
The composition of alloy of Al alloy strip is the same as embodiment 1.
Spraying ground is A3 steel, and when sandblasting pretreatment, compressed air must clean drying, and pressure is controlled in 0.7MPa, adopted
With emergy, sandblasting angle is 90 °, and sandblasting distance is 200mm, and sandblasting requires matrix all to expose fresh surface, base after sandblasting
The surface roughness of body reaches Sa2.5 grades, while requiring to complete to complete line-material coating in four hours in surface treatment；
Al-Ni-WC-ZrO is sprayed on A3 steel matrix surface using conventional electric arc spraying equipment2Coating, technological parameter are as follows: pressure
Contracting air pressure 0.7MPa, spray voltage 32V, spraying current 140A, spray distance 190mm, 400 μm of coating layer thickness.
Embodiment 4
Take Ni powder, Al powder, WC powder and ZrO2Powder mixes in proportion after crossing 50 meshes, use specification for 10mm ×
The 1 of 0.4mm (width × thickness) is that Al alloy strip is band, and finished product silk material, the powder core filling rate of silk material is 34%, silk material
Diameter is 2mm.
Powder cored filament material each group is grouped as follows:
The composition of alloy of Al alloy strip is the same as embodiment 1.
Spraying ground is Q235 steel, and when sandblasting pretreatment, compressed air must clean drying, pressure control in 0.8MPa,
Using emergy, sandblasting angle is 80 °, and sandblasting distance is 180mm, and sandblasting requires matrix all to expose fresh surface, after sandblasting
The surface roughness of matrix reaches Sa2.5 grades, while requiring to complete to complete line-material coating in four hours in surface treatment；
Al-Ni-WC-ZrO is sprayed on Q235 steel matrix surface using conventional electric arc spraying equipment2Coating, technological parameter are as follows:
Compressed air pressure 0.8MPa, spray voltage 31V, spraying current 120A, spray distance 180mm, 450 μm of coating layer thickness.
Embodiment 5
Take Ni powder, Al powder, WC powder and ZrO2Powder mixes in proportion after crossing 80 meshes, use specification for 10mm ×
The 1 of 0.4mm (width × thickness) is that Al alloy strip is band, and finished product silk material, the powder core filling rate of silk material is 34%, silk material
Diameter is 2mm.
Powder cored filament material each group is grouped as follows:
The composition of alloy of Al alloy strip is the same as embodiment 1.
Spraying ground is Q235 steel, and when sandblasting pretreatment, compressed air must clean drying, pressure control in 0.7MPa,
Using emergy, sandblasting angle is 70 °, and sandblasting distance is 160mm, and sandblasting requires matrix all to expose fresh surface, after sandblasting
The surface roughness of matrix reaches Sa2.5 grades, while requiring to complete to complete line-material coating in four hours in surface treatment；
Al-Ni-WC-ZrO is sprayed on Q235 steel matrix surface using conventional electric arc spraying equipment2Coating, technological parameter are as follows:
Compressed air pressure 0.7MPa, spray voltage 32V, spraying current 130A, spray distance 200mm, 500 μm of coating layer thickness.
Fig. 2 shows Al-Ni-WC-ZrO2The macro morphology that coating sprays on drilling rod.From the point of view of macro morphology, Al-
Ni-WC-ZrO2Coating surface is in brilliant white, and rough surface.
Fig. 3 shows Al-Ni-WC-ZrO2The microscopic appearance of coating, from the point of view of microscopic appearance, molten drop lapping is good, does not have
Apparent hole occurs, and shows under set ingredient and process conditions, Al-Ni-WC-ZrO2Coating appearance is preferable.
Fig. 4 shows Al-Ni-WC-ZrO2Coating impregnates the surface shape after 168h under 5000ppm hydrogen sulfide water environment
Looks.Al-Ni-WC-ZrO2For coating after hydrogen sulfide corrosion, there are not the failure phenomenons such as crack, fall off in surface, and illustrates that coating can
To form effective protection to bottom steel matrix.
The Al-Ni-WC-ZrO that the embodiment of the present application is sprayed2Coating and pure Al coating carry out silt erosion to score
Analysis.Testing coating surface area is 100mm × 50mm.Two kinds of coatings are evaluated using weight-loss method, to investigate the resistance to mud of coating
Husky erosion property.Experimental condition: medium is 3.5%NaCl solution, and silt content is 2%~3%, and impact angle is 90 °, erosion speed
Degree is 10m/s, and the erosion time is for 24 hours.The corrosion rate situation of coating is shown in Table 1:
The 1 coating erosion property of resistance to silt test result of table
| Coating | Average weight loss/mg | Corrosion rate/(g/m2·h) |
| Embodiment 1 | 123.5 | 1.03 |
| Embodiment 2 | 128.3 | 1.07 |
| Embodiment 3 | 152.7 | 1.27 |
| Embodiment 4 | 161.4 | 1.35 |
| Embodiment 5 | 128.9. | 1.07 |
| Pure Al coating | 625.1 | 5.21 |
As can be seen from Table 1, the Al-Ni-WC-ZrO prepared using the powder cored filament material of the embodiment of the present application2Coating and pure Al coating
It compares, corrosion rate declines to a great extent under silt erosion-corrosion environment.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (7)
1. a kind of powder cored filament material, is made of crust and powder core, which is characterized in that the crust is aluminium alloy crust, the powder core
For Ni powder, WC powder, ZrO2The alloyed powder of powder and Al powder composition；According to mass percent, each group is grouped as in the powder cored filament material
Are as follows: Ni powder 15%~25%, Al powder 5%~15%, WC powder and ZrO2Powder totally 3%~10%, surplus be Al alloy strip；
The WC powder accounts for the WC powder and ZrO2The 10%~30% of powder gross mass；
The filling rate of the powder core is 33%~35%；
The Ni powder, WC powder, ZrO2The screen size of powder and Al powder is 50~80 mesh.
2. the method for preparing anticorrosive erosion thermal spray metal coating using powder cored filament material as described in claim 1, feature
It is, comprising:
Sandblasting pretreatment is carried out to matrix surface；
The powder cored filament material is sprayed to pretreated matrix surface using high-speed arc spraying technology, forms Al-Ni-WC-ZrO2
Coating, i.e., described anticorrosive, the erosion thermal spray metal coating.
3. preparing the method for anticorrosive erosion thermal spray metal coating as claimed in claim 2, which is characterized in that the base
Body material is carbon steel or steel alloy.
4. preparing the method for anticorrosive erosion thermal spray metal coating as claimed in claim 2, which is characterized in that carrying out
When the sandblasting pretreatment, control pressure is 0.7~0.8 MPa, and sandblasting angle is 70~90 °, sandblasting distance for 150~
200mm。
5. preparing the method for anticorrosive erosion thermal spray metal coating as claimed in claim 2, which is characterized in that the height
The technological parameter of fast electric arc spraying are as follows: 0.7~0.8 MPa of compressed air pressure, 29~32 V of spray voltage, spraying current 120
~150 A, 180~200mm of spray distance.
6. preparing the method for anticorrosive erosion thermal spray metal coating as claimed in claim 2, which is characterized in that the Al-
Ni-WC-ZrO2Coating with a thickness of 300~500 μm.
7. a kind of drilling tool, including matrix and the coating for being sprayed on described matrix surface, which is characterized in that the coating is used as weighed
Benefit require 1 described in powder cored filament material High Speed Electric Arc Spraying be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710929512.XA CN107841702B (en) | 2017-10-09 | 2017-10-09 | A kind of powder cored filament material and the method for preparing anticorrosive erosion thermal spray metal coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710929512.XA CN107841702B (en) | 2017-10-09 | 2017-10-09 | A kind of powder cored filament material and the method for preparing anticorrosive erosion thermal spray metal coating |
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| CN108642432B (en) * | 2018-07-06 | 2020-07-31 | 北京工业大学 | Aluminum base containing B4C ceramic electric arc spraying powder core wire material |
| CN108893700A (en) * | 2018-07-06 | 2018-11-27 | 北京工业大学 | A kind of aluminium base ceramic arc containing TiC spraying powder cored filament material |
| CN109554654B (en) * | 2018-11-23 | 2021-01-29 | 江苏健力钢管有限公司 | Treatment method of high-strength corrosion-resistant steel pipe |
| CN110791725B (en) * | 2019-10-11 | 2022-07-26 | 中国人民解放军陆军装甲兵学院 | Powder core wire material suitable for plasma spraying and coating preparation method |
| CN115478195A (en) * | 2021-06-15 | 2022-12-16 | 贵州电网有限责任公司 | Al-Mg anticorrosive paint for steel, cored wire and spraying method thereof |
| CN116083836A (en) * | 2023-02-17 | 2023-05-09 | 昆明理工大学 | Novel wire for electric arc spraying and preparation method thereof |
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| CN1702189A (en) * | 2005-07-08 | 2005-11-30 | 北京工业大学 | Aluminium based powder core wire |
| CN102816987A (en) * | 2012-07-05 | 2012-12-12 | 中国科学院宁波材料技术与工程研究所 | Wear resistant and corrosion resistant composite coating for substrate surface and preparation method thereof |
| CN104923775A (en) * | 2014-03-21 | 2015-09-23 | 北京碧海舟腐蚀防护工业股份有限公司 | Powder core wire for generating anticorrosion metal coating, manufacturing method for powder core wire, and coating method |
| CN107164716A (en) * | 2017-06-13 | 2017-09-15 | 中国石油天然气集团公司 | A kind of powder cored filament material and the method for preparing high velocity stratum |
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| US3332752A (en) * | 1963-08-22 | 1967-07-25 | Raybestos Manhattan Inc | Composite flame spraying wire |
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| CN1702189A (en) * | 2005-07-08 | 2005-11-30 | 北京工业大学 | Aluminium based powder core wire |
| CN102816987A (en) * | 2012-07-05 | 2012-12-12 | 中国科学院宁波材料技术与工程研究所 | Wear resistant and corrosion resistant composite coating for substrate surface and preparation method thereof |
| CN104923775A (en) * | 2014-03-21 | 2015-09-23 | 北京碧海舟腐蚀防护工业股份有限公司 | Powder core wire for generating anticorrosion metal coating, manufacturing method for powder core wire, and coating method |
| CN107164716A (en) * | 2017-06-13 | 2017-09-15 | 中国石油天然气集团公司 | A kind of powder cored filament material and the method for preparing high velocity stratum |
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