CN104879109B - Decomposable asymmetric choice net pressure break ball holder surface composite film and ball seat and ball seat preparation method - Google Patents
Decomposable asymmetric choice net pressure break ball holder surface composite film and ball seat and ball seat preparation method Download PDFInfo
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Abstract
The present invention provides a kind of decomposable asymmetric choice net pressure break ball holder surface composite film and ball seat and ball seat preparation methods.The composite film includes Micro-Arc Oxidized Ceramic Coating, hard coat, heat-resistant polymer coating；The Micro-Arc Oxidized Ceramic Coating is coated on the surface of the ball seat；The hard coat is coated on the surface of the Micro-Arc Oxidized Ceramic Coating；The heat-resistant polymer coating is coated on the surface of the hard coat.The present invention also provides with the decomposable asymmetric choice net pressure break ball seat of above-mentioned composite film and the preparation method of the ball seat.The preparation method of the decomposable asymmetric choice net pressure break ball seat of the present invention is simple and feasible, and operability is good；The decomposable asymmetric choice net pressure break ball seat of the present invention has good corrosion resistance and anti-erosion property in pit shaft.In addition, the preparation method of decomposable asymmetric choice net pressure break ball seat provided by the invention does not influence the mechanical property and resolution characteristic of ball seat base material, combining closely between coating and coating, between coating and matrix may be implemented while forming good protection to ball seat.
Description
Technical field
The present invention relates to a kind of decomposable asymmetric choice net pressure break ball holder surface composite film and ball seat and ball seat preparation methods, belong to oil gas
Field development technique field.
Background technology
In oil-gas field development field, in order to improve well yield, multistage pitching sliding sleeve fracturing is that application is more extensive
It is segmented storey increase design technology.In this technique, pitching sliding sleeve system provides for the fracturing fluid in tubing string flows to the logical of stratum
Road.Before pressure break, sliding sleeve is closed；By delivering pressure break ball to ball seat in fracturing process, open sliding sleeve, get through tubing string and
Channel between stratum；After the completion of fracturing work, pressure break ball, which returns, drains into ground.The material of traditional ball sockets is steel or cast iron, is needed
Lower brill falls ball seat milling, otherwise will influence individual well production efficiency or subsequent underground work.
Since corrosion decomposition rate of the magnesium alloy in brine is far above steel or cast iron materials, magnesium alloy is used
The decomposable asymmetric choice net pressure break ball seat being processed into can be decomposed gradually under the conditions of pit shaft certain salinity water flooding, not only save milling work
Industry, and also assure the oil gas circulation road of big orifice.Before fracturing work, pressure break ball seat need to be intact in pit shaft, no
Bearing capacity can be lost because of corrosion or erosion, therefore surfacecti proteon processing need to be carried out to magnesium alloy decomposable asymmetric choice net pressure break ball seat.
Invention content
The purpose of the present invention is to provide a kind of decomposable asymmetric choice net pressure break ball holder surface composite films.
The present invention also aims to provide a kind of decomposable asymmetric choice net pressure break ball seat with above-mentioned composite film.
The present invention also aims to provide a kind of preparation method of above-mentioned decomposable asymmetric choice net pressure break ball seat.
In order to achieve the above object, the present invention provides a kind of decomposable asymmetric choice net pressure break ball holder surface composite films comprising differential of the arc oxygen
Change ceramic film, hard coat, heat-resistant polymer coating；
The Micro-Arc Oxidized Ceramic Coating is coated on the surface of the ball seat；The hard coat is coated on the differential of the arc oxygen
Change the surface of ceramic film；The heat-resistant polymer coating is coated on the surface of the hard coat.
Composite film according to the present invention, it is preferable that the thickness of the Micro-Arc Oxidized Ceramic Coating is 10-100 μm.
Composite film according to the present invention, it is preferable that the thickness of the heat-resistant polymer coating is 20-50 μm.
Composite film according to the present invention, it is preferable that the heat-resistant polymer includes polytetrafluoroethylene (PTFE), polytetrafluoro
The copolymer or polysiloxanes that copolymer, polytrifluorochloroethylene, polytrifluorochloroethylene and the ethylene that ethylene is formed with ethylene are formed
Resin, and copolymer that further preferably above-mentioned polytetrafluoroethylene (PTFE), polytetrafluoroethylene (PTFE) and ethylene are formed, polytrifluorochloroethylene,
The molecular weight of copolymer or polyorganosiloxane resin that polytrifluorochloroethylene is formed with ethylene is not less than 1,000,000.
Composite film according to the present invention, it is preferable that the thickness of the hard coat is 3-50 μm.
Composite film according to the present invention, it is preferable that the hard coat is single-layer or multi-layer.
Composite film according to the present invention, it is preferable that the hard coat includes nitride coatings, carbonitride painting
Layer, carbide coating or diamond-like coating；
The more preferable nitride includes titanium nitride, chromium nitride, aluminium nitride, vanadium nitride, zirconium nitride, silicon nitride or cube nitrogen
Change boron；
The more preferable carbonitride include titanium carbonitride, carbon chromium nitride, carbon aluminium nitride, vanadium carbide nitride, zirconium cyanonitride or
Carbonitride of silicium；
The more preferable carbide includes titanium carbide, chromium carbide, aluminium carbide, vanadium carbide, zirconium carbide or silicon carbide.
The present invention also provides a kind of decomposable asymmetric choice net pressure break ball seats comprising ball seat matrix, above-mentioned decomposable asymmetric choice net pressure break ball seat table
Face composite film, the composite film are coated on the surface of the ball seat matrix.
Decomposable asymmetric choice net pressure break ball seat according to the present invention, it is preferable that the ball seat matrix is prepared by magnesium alloy.
The present invention also provides the preparation methods of above-mentioned decomposable asymmetric choice net pressure break ball seat comprising following steps：
A, Micro-Arc Oxidized Ceramic Coating is prepared in decomposable asymmetric choice net pressure break ball holder surface, and using hole sealing agent to the micropore in film layer
It is filled Seal treatment；
B, hard coat is prepared on the Micro-Arc Oxidized Ceramic Coating surface；
C, in the external coating heat-resistant polymer coating of the hard coat.
Method according to the present invention, it is preferable that in above-mentioned steps a, the Micro-Arc Oxidized Ceramic Coating is to use
What micro-arc oxidation was prepared.
Method according to the present invention, it is preferable that in above-mentioned steps a, the hole sealing agent includes epoxy resin, dioxy
SiClx colloidal sol or sodium metasilicate；
Above-mentioned micro-arc oxidation is ordinary skill in the art means, and the present invention is only using micro-arc oxidation in decomposable asymmetric choice net
The surface of pressure break ball seat prepares Micro-Arc Oxidized Ceramic Coating, and there is no be improved micro-arc oxidation to the present invention；By differential of the arc oxygen
The Micro-Arc Oxidized Ceramic Coating that change method is prepared is the ceramic film based on ball seat substrate metal oxide, and composition can be by
To the influence of ball seat matrix alloy ingredient and the bath composition of micro-arc oxidation, if ball seat is with made of magnesium alloy, then
MgO, Al can be contained in Micro-Arc Oxidized Ceramic Coating2O3If the electrolyte of micro-arc oxidation is silicate, differential arc oxidation pottery
Also contain SiO in porcelain film layer2If the electrolyte of micro-arc oxidation is aluminate, contain in Micro-Arc Oxidized Ceramic Coating
Al2O3；In the present invention, ceramic coating formed by micro-arc oxidation is powered in decomposable asymmetric choice net pressure break ball holder surface and aoxidizes self-assembling formation, micro-arc oxidation
The electrolyte used is the mixed liquor of sodium metasilicate and sodium hydroxide, with the total volume meter of the mixed liquor, concentration range 5-
25g/L；Therefore, Micro-Arc Oxidized Ceramic Coating is with MgO, Al2O3、SiO2Based on equal oxides, but the present invention is to its concrete component
And the content of component is not required.
Method according to the present invention, it is preferable that in step a, the differential of the arc oxygen that is prepared using micro-arc oxidation
Change in ceramic film and contain micropore, which is techniques known common sense, as long as being prepared using micro-arc oxidation micro-
Arc oxide ceramic film layer just will appear micropore in the ceramic film, which is as caused by surface-discharge；It needs in the present invention
Seal treatment is filled to above-mentioned micropore, filling Seal treatment technology is ordinary skill in the art means, and the application does not have
Have and filling Seal treatment technology is improved, the hole sealing agent used in a preferred embodiment of the invention is SiO2Colloidal sol.
Method according to the present invention, it is preferable that in stepb, the preparation method of the hard coat includes gas phase
Sedimentation or hot spray process.
Above-mentioned vapour deposition process, hot spray process are ordinary skill in the art means, and the present invention is only using vapor deposition
Method or hot spray process prepare hard coat on the surface of Micro-Arc Oxidized Ceramic Coating, and there is no to vapour deposition process, heat by the present invention
Spray coating method is improved.
Method according to the present invention, decomposable asymmetric choice net pressure break ball holder surface prepare Micro-Arc Oxidized Ceramic Coating the step of it
Before, it needs, first decomposable asymmetric choice net pressure break ball holder surface can be cleaned, cleaning process is techniques known according to field operation
Common sense, usual cleaning process include carrying out oil removal treatment to the surface of decomposable asymmetric choice net ball seat, clean ball holder surface simultaneously with pure water later
Its surface is dried up.
The decomposable asymmetric choice net ball seat composite film of the present invention is applied by Micro-Arc Oxidized Ceramic Coating, hard coat and heat-resistant polymer
Layer is constituted, wherein Micro-Arc Oxidized Ceramic Coating is high with ball seat substrate combinating strength, corrosion-resistant；Hard coating hardness is big, has good
Good erosion resistance effect；Heat-resistant polymer coating plays packaging effect to ball seat, can improve the corrosion-resistant and resistance to punching of ball seat
Corrosion energy.The preparation method of the decomposable asymmetric choice net pressure break ball seat of the present invention is simple and feasible, and operability is good；Decomposable asymmetric choice net through the invention
The decomposable asymmetric choice net pressure break ball seat that the preparation method of pressure break ball seat obtains has good corrosion resistance and erosion wear resistance in pit shaft
Energy.
The preparation method of decomposable asymmetric choice net pressure break ball seat provided by the invention does not influence while forming good protection to ball seat
The mechanical property and resolution characteristic of ball seat base material, may be implemented combining closely between coating and coating, between coating and matrix.
Description of the drawings
Fig. 1 is the cross section structure schematic diagram of the decomposable asymmetric choice net pressure break ball seat of the present invention.
Main Reference label declaration
1 ball seat matrix, 2 Micro-Arc Oxidized Ceramic Coating, 3 hard coat, 4 heat-resistant polymer coating.
Specific implementation mode
The beneficial effect that below implementation process of the present invention will be explained in detail by specific embodiment and attached drawing and generated
Fruit, it is intended to help reader more fully understand the present invention essence and feature, but not as to this case can practical range limit
It is fixed.
Embodiment 1
Present embodiments provide a kind of preparation method of decomposable asymmetric choice net pressure break ball seat, the decomposable asymmetric choice net pressure break ball seat in the present embodiment
It is the pressure break ball seat using magnesium alloy as base material, the preparation method of the pressure break ball seat includes the following steps：
Surface clean：Oil removal treatment is carried out to the surface of above-mentioned decomposable asymmetric choice net ball seat, cleans ball holder surface simultaneously with pure water later
Surface is dried up；
Generate Micro-Arc Oxidized Ceramic Coating：Using micro-arc oxidation, Micro-Arc Oxidized Ceramic Coating is grown in ball holder surface,
The thickness of the film layer is about 27 μm；Wherein, the electrolyte that micro-arc oxidation uses is the mixed liquor of sodium metasilicate and sodium hydroxide, with
The total volume meter of the mixed liquor, concentration range 5-25g/L；Then use SiO2Colloidal sol hole sealing agent is to ceramic coating formed by micro-arc oxidation
Micropore in layer is filled Seal treatment；
Prepare hard coat：Titanium nitride hard is prepared on Micro-Arc Oxidized Ceramic Coating surface using multi-arc ion coating sedimentation
Coating；The thickness of the titanium nitride coating is about 8 μm, and hardness is higher than 2100HV；Wherein, the arc electricity that multi-arc ion coating sedimentation uses
Stream is 50-80A, and vacuum degree is 3.0 × 10-1-2Pa；
Coat heat-resistant polymer layer：In one layer of high temperature resistant polyorganosiloxane resin of surface spraying of titanium nitride hard coat
Layer；Its thickness is 30 μm.
Embodiment 2
The decomposable asymmetric choice net pressure break ball seat being prepared by embodiment 1 is present embodiments provided, which cuts
Face structural schematic diagram is as shown in Figure 1 comprising ball seat matrix 1 and decomposable asymmetric choice net pressure break ball holder surface composite film；The decomposable asymmetric choice net
Pressure break ball holder surface composite film includes Micro-Arc Oxidized Ceramic Coating 2, hard coat 3, heat-resistant polymer coating 4；It is described micro-
Arc oxide ceramic film layer 2 is coated on the surface of the ball seat matrix 1；The hard coat 3 is coated on the arc differential oxide ceramic
The surface of film layer 2；The heat-resistant polymer coating 4 is coated on the surface of the hard coat 3；Wherein, arc differential oxide ceramic
The thickness of film layer 2 is 27 μm, and the hard coat 3 is titanium nitride hard coat, and thickness is 8 μm, the heat-resistant polymer
Coating 4 is high temperature resistant polyorganosiloxane resin layer, and thickness is 30 μm.
Embodiment 3
The decomposable asymmetric choice net pressure break ball seat that embodiment 1 is prepared is soaked in 80 DEG C, 1% potassium chloride solution by the present embodiment
In, after impregnating 15 days, the corrosion-free generation of ball holder surface；The water of the 20wt% containing sand is used to wash away the present embodiment 1 with the speed of 8m/s
The decomposable asymmetric choice net pressure break ball seat being prepared was washed away more than 3 hours, and decomposable asymmetric choice net pressure break ball holder surface composite film protects ball seat matrix
Shield is still good, shows to have the decomposable asymmetric choice net pressure break ball seat of above-mentioned composite film to have good corrosion resistance and erosion wear resistance
Energy.
Embodiment 4
Present embodiments provide a kind of preparation method of decomposable asymmetric choice net pressure break ball seat, the decomposable asymmetric choice net pressure break ball seat in the present embodiment
It is the pressure break ball seat using magnesium alloy as base material, the preparation method of the pressure break ball seat includes the following steps：
Surface clean：Oil removal treatment is carried out to the surface of above-mentioned decomposable asymmetric choice net ball seat, cleans ball holder surface simultaneously with pure water later
Surface is dried up；
Generate Micro-Arc Oxidized Ceramic Coating：Using micro-arc oxidation, Micro-Arc Oxidized Ceramic Coating is grown in ball holder surface,
The thickness of the film layer is about 35 μm；Wherein, the electrolyte that micro-arc oxidation uses is the mixed liquor of sodium metasilicate and sodium hydroxide, with
The total volume meter of the mixed liquor, concentration range 5-25g/L；Then use SiO2Colloidal sol hole sealing agent is to ceramic coating formed by micro-arc oxidation
Micropore in layer is filled Seal treatment；
Prepare hard coat：Titanium carbide hard is prepared on Micro-Arc Oxidized Ceramic Coating surface using multi-arc ion coating sedimentation
Coating；The thickness of the titanium carbide coating is about 6 μm, and hardness is higher than 2400HV；Wherein, the arc electricity that multi-arc ion coating sedimentation uses
Stream is 50-80A, and vacuum degree is 3.0 × 10-1-2Pa；
Coat heat-resistant polymer layer：In one layer of high-temperature resistant polytetrafluoroethylmelt layer of surface spraying of titanium carbide hard coat；
Its thickness is 42 μm.
Embodiment 5
The decomposable asymmetric choice net pressure break ball seat being prepared by embodiment 4 is present embodiments provided, which cuts
Face structural schematic diagram is as shown in Figure 1 comprising ball seat matrix 1 and decomposable asymmetric choice net pressure break ball holder surface composite film；The decomposable asymmetric choice net
Pressure break ball holder surface composite film includes Micro-Arc Oxidized Ceramic Coating 2, hard coat 3, heat-resistant polymer coating 4；It is described micro-
Arc oxide ceramic film layer 2 is coated on the surface of the ball seat matrix 1；The hard coat 3 is coated on the arc differential oxide ceramic
The surface of film layer 2；The heat-resistant polymer coating 4 is coated on the surface of the hard coat 3；Wherein, arc differential oxide ceramic
The thickness of film layer 2 is 35 μm, and the hard coat 3 is titanium carbide hard coat, and thickness is 6 μm, the heat-resistant polymer
Coating 4 is high-temperature resistant polytetrafluoroethylmelt layer, and thickness is 42 μm.
Embodiment 6
The decomposable asymmetric choice net pressure break ball seat that embodiment 4 is prepared is soaked in 80 DEG C, 1% potassium chloride solution by the present embodiment
In, after impregnating 15 days, the corrosion-free generation of ball holder surface；The water of the 20wt% containing sand is used to wash away the present embodiment 1 with the speed of 8m/s
The decomposable asymmetric choice net pressure break ball seat being prepared was washed away more than 3 hours, and decomposable asymmetric choice net pressure break ball holder surface composite film protects ball seat matrix
Shield is still good, shows to have the decomposable asymmetric choice net pressure break ball seat of above-mentioned composite film to have good corrosion resistance and erosion wear resistance
Energy.
Embodiment 7
Present embodiments provide a kind of preparation method of decomposable asymmetric choice net pressure break ball seat, the decomposable asymmetric choice net pressure break ball seat in the present embodiment
It is the pressure break ball seat using magnesium alloy as base material, the preparation method of the pressure break ball seat includes the following steps：
Surface clean：Oil removal treatment is carried out to the surface of above-mentioned decomposable asymmetric choice net ball seat, cleans ball holder surface simultaneously with pure water later
Surface is dried up；
Generate Micro-Arc Oxidized Ceramic Coating：Using micro-arc oxidation, Micro-Arc Oxidized Ceramic Coating is grown in ball holder surface,
The thickness of the film layer is about 31 μm；Wherein, the electrolyte that micro-arc oxidation uses is the mixed liquor of sodium metasilicate and sodium hydroxide, with
The total volume meter of the mixed liquor, concentration range 5-25g/L；Then use SiO2Colloidal sol hole sealing agent is to ceramic coating formed by micro-arc oxidation
Micropore in layer is filled Seal treatment；
Prepare hard coat：It is hard that titanium carbonitride on Micro-Arc Oxidized Ceramic Coating surface is prepared using multi-arc ion coating sedimentation
Matter coating；The thickness of the titanium carbonitride coating is about 7 μm, and hardness is higher than 2300HV；Wherein, multi-arc ion coating sedimentation uses
Arc current is 50-80A, and vacuum degree is 3.0 × 10-1-2Pa；
Coat heat-resistant polymer layer：In one layer of high temperature resistant polytrifluorochloroethylene of surface spraying of titanium carbonitride hard coat
Layer；Its thickness is 45 μm.
Embodiment 8
The decomposable asymmetric choice net pressure break ball seat being prepared by embodiment 7 is present embodiments provided, which cuts
Face structural schematic diagram is as shown in Figure 1 comprising ball seat matrix 1 and decomposable asymmetric choice net pressure break ball holder surface composite film；The decomposable asymmetric choice net
Pressure break ball holder surface composite film includes Micro-Arc Oxidized Ceramic Coating 2, hard coat 3, heat-resistant polymer coating 4；It is described micro-
Arc oxide ceramic film layer 2 is coated on the surface of the ball seat matrix 1；The hard coat 3 is coated on the arc differential oxide ceramic
The surface of film layer 2；The heat-resistant polymer coating 4 is coated on the surface of the hard coat 3；Wherein, arc differential oxide ceramic
The thickness of film layer 2 is 31 μm, and the hard coat 3 is titanium carbonitride hard coat, and thickness is 7 μm, the high temperature resistant polymerization
Object coating 4 is high temperature resistant polytrifluorochloroethylene layer, and thickness is 45 μm.
Embodiment 9
The decomposable asymmetric choice net pressure break ball seat that embodiment 7 is prepared is soaked in 80 DEG C, 1% potassium chloride solution by the present embodiment
In, after impregnating 15 days, the corrosion-free generation of ball holder surface；The water of the 20wt% containing sand is used to wash away the present embodiment 1 with the speed of 8m/s
The decomposable asymmetric choice net pressure break ball seat being prepared was washed away more than 3 hours, and decomposable asymmetric choice net pressure break ball holder surface composite film protects ball seat matrix
Shield is still good, shows to have the decomposable asymmetric choice net pressure break ball seat of above-mentioned composite film to have good corrosion resistance and erosion wear resistance
Energy.
Embodiment 10
Present embodiments provide a kind of preparation method of decomposable asymmetric choice net pressure break ball seat, the decomposable asymmetric choice net pressure break ball seat in the present embodiment
It is the pressure break ball seat using magnesium alloy as base material, the preparation method of the pressure break ball seat includes the following steps：
Surface clean：Oil removal treatment is carried out to the surface of above-mentioned decomposable asymmetric choice net ball seat, cleans ball holder surface simultaneously with pure water later
Surface is dried up；
Generate Micro-Arc Oxidized Ceramic Coating：Using micro-arc oxidation, Micro-Arc Oxidized Ceramic Coating is grown in ball holder surface,
The thickness of the film layer is about 29 μm；Wherein, the electrolyte that micro-arc oxidation uses is the mixed liquor of sodium metasilicate and sodium hydroxide, with
The total volume meter of the mixed liquor, concentration range 5-25g/L；Then use SiO2Colloidal sol hole sealing agent is to ceramic coating formed by micro-arc oxidation
Micropore in layer is filled Seal treatment；
Prepare hard coat：Chrome carbide hard is prepared on Micro-Arc Oxidized Ceramic Coating surface using multi-arc ion coating sedimentation
Coating；The thickness of the chromium carbide coating is about 8 μm, and hardness is higher than 2000HV；Wherein, the arc electricity that multi-arc ion coating sedimentation uses
Stream is 50-80A, and vacuum degree is 3.0 × 10-1-2Pa；
Coat heat-resistant polymer layer：In one layer of high temperature resistant polyorganosiloxane resin of surface spraying of chrome carbide hard coating
Layer；Its thickness is 40 μm.
Embodiment 11
The decomposable asymmetric choice net pressure break ball seat being prepared by embodiment 10 is present embodiments provided, which cuts
Face structural schematic diagram is as shown in Figure 1 comprising ball seat matrix 1 and decomposable asymmetric choice net pressure break ball holder surface composite film；The decomposable asymmetric choice net
Pressure break ball holder surface composite film includes Micro-Arc Oxidized Ceramic Coating 2, hard coat 3, heat-resistant polymer coating 4；It is described micro-
Arc oxide ceramic film layer 2 is coated on the surface of the ball seat matrix 1；The hard coat 3 is coated on the arc differential oxide ceramic
The surface of film layer 2；The heat-resistant polymer coating 4 is coated on the surface of the hard coat 3；Wherein, arc differential oxide ceramic
The thickness of film layer 2 is 29 μm, and the hard coat 3 is chrome carbide hard coating, and thickness is 8 μm, the heat-resistant polymer
Coating 4 is high temperature resistant polyorganosiloxane resin layer, and thickness is 40 μm.
Embodiment 12
The present embodiment by the decomposable asymmetric choice net pressure break ball seat that embodiment 10 is prepared be soaked in 80 DEG C, 1% potassium chloride it is water-soluble
In liquid, after impregnating 15 days, the corrosion-free generation of ball holder surface；The water of the 20wt% containing sand is used to wash away the present embodiment with the speed of 8m/s
The 1 decomposable asymmetric choice net pressure break ball seat being prepared, washes away more than 3 hours, decomposable asymmetric choice net pressure break ball holder surface composite film is to ball seat matrix
Protection is still good, shows to have the decomposable asymmetric choice net pressure break ball seat of above-mentioned composite film to have good corrosion resistance and Anti-erosion
Performance.
Embodiment 13
Present embodiments provide a kind of preparation method of decomposable asymmetric choice net pressure break ball seat, the decomposable asymmetric choice net pressure break ball seat in the present embodiment
It is the pressure break ball seat using magnesium alloy as base material, the preparation method of the pressure break ball seat includes the following steps：
Surface clean：Oil removal treatment is carried out to the surface of above-mentioned decomposable asymmetric choice net ball seat, cleans ball holder surface simultaneously with pure water later
Surface is dried up；
Generate Micro-Arc Oxidized Ceramic Coating：Using micro-arc oxidation, Micro-Arc Oxidized Ceramic Coating is grown in ball holder surface,
The thickness of the film layer is about 31 μm；Wherein, the electrolyte that micro-arc oxidation uses is the mixed liquor of sodium metasilicate and sodium hydroxide, with
The total volume meter of the mixed liquor, concentration range 5-25g/L；Then use SiO2Colloidal sol hole sealing agent is to ceramic coating formed by micro-arc oxidation
Micropore in layer is filled Seal treatment；
Prepare hard coat：It is hard that zirconium cyanonitride on Micro-Arc Oxidized Ceramic Coating surface is prepared using multi-arc ion coating sedimentation
Matter coating；The thickness of the zirconium cyanonitride coating is about 5 μm, and hardness is higher than 2500HV；Wherein, multi-arc ion coating sedimentation uses
Arc current is 50-80A, and vacuum degree is 3.0 × 10-1-2Pa；
Coat heat-resistant polymer layer：In one layer of high temperature resistant polyorganosiloxane resin of surface spraying of titanium nitride hard coat
Layer；Its thickness is 33 μm.
Embodiment 14
The decomposable asymmetric choice net pressure break ball seat being prepared by embodiment 13 is present embodiments provided, which cuts
Face structural schematic diagram is as shown in Figure 1 comprising ball seat matrix 1 and decomposable asymmetric choice net pressure break ball holder surface composite film；The decomposable asymmetric choice net
Pressure break ball holder surface composite film includes Micro-Arc Oxidized Ceramic Coating 2, hard coat 3, heat-resistant polymer coating 4；It is described micro-
Arc oxide ceramic film layer 2 is coated on the surface of the ball seat matrix 1；The hard coat 3 is coated on the arc differential oxide ceramic
The surface of film layer 2；The heat-resistant polymer coating 4 is coated on the surface of the hard coat 3；Wherein, arc differential oxide ceramic
The thickness of film layer 2 is 31 μm, and the hard coat 3 is zirconium cyanonitride hard coat, and thickness is 5 μm, the high temperature resistant polymerization
Object coating 4 is high temperature resistant polyorganosiloxane resin layer, and thickness is 33 μm.
Embodiment 15
The present embodiment by the decomposable asymmetric choice net pressure break ball seat that embodiment 13 is prepared be soaked in 80 DEG C, 1% potassium chloride it is water-soluble
In liquid, after impregnating 15 days, the corrosion-free generation of ball holder surface；The water of the 20wt% containing sand is used to wash away the present embodiment with the speed of 8m/s
The 1 decomposable asymmetric choice net pressure break ball seat being prepared, washes away more than 3 hours, decomposable asymmetric choice net pressure break ball holder surface composite film is to ball seat matrix
Protection is still good, shows to have the decomposable asymmetric choice net pressure break ball seat of above-mentioned composite film to have good corrosion resistance and Anti-erosion
Performance.
Claims (2)
1. a kind of decomposable asymmetric choice net pressure break ball seat comprising ball seat matrix and decomposable asymmetric choice net pressure break ball holder surface composite film；It is described to divide
It includes Micro-Arc Oxidized Ceramic Coating, hard coat, heat-resistant polymer coating to decompress blastomere seating face composite film；The differential of the arc
Oxide ceramic film layer is coated on the surface of the ball seat matrix；The hard coat is coated on the Micro-Arc Oxidized Ceramic Coating
Surface；The heat-resistant polymer coating is coated on the surface of the hard coat；And the thickness of the Micro-Arc Oxidized Ceramic Coating
Degree is 27 μm, and the hard coat is titanium nitride hard coat, and thickness is 8 μm, and the heat-resistant polymer coating is resistance to height
Warm polyorganosiloxane resin layer, thickness are 30 μm；
The decomposable asymmetric choice net pressure break ball seat is the pressure break ball seat using magnesium alloy as base material, the preparation method of the pressure break ball seat include with
Lower step：
Surface clean：Oil removal treatment is carried out to the surface of decomposable asymmetric choice net ball seat, ball holder surface is cleaned with pure water later and blows surface
It is dry；
Generate Micro-Arc Oxidized Ceramic Coating：Using micro-arc oxidation, Micro-Arc Oxidized Ceramic Coating is grown in ball holder surface, the film
The thickness of layer is 27 μm；Wherein, the electrolyte that micro-arc oxidation uses is the mixed liquor of sodium metasilicate and sodium hydroxide, with the mixing
The total volume meter of liquid, concentration range 5-25g/L；Then use SiO2Colloidal sol hole sealing agent is in Micro-Arc Oxidized Ceramic Coating
Micropore is filled Seal treatment；
Prepare hard coat：Titanium nitride hard is prepared using multi-arc ion coating sedimentation on Micro-Arc Oxidized Ceramic Coating surface to apply
Layer；The thickness of the titanium nitride coating is 8 μm, and hardness is higher than 2100HV；Wherein, the arc current that multi-arc ion coating sedimentation uses for
50-80A, vacuum degree are 3.0 × 10-1-2Pa；
Coat heat-resistant polymer layer：In one layer of high temperature resistant polyorganosiloxane resin layer of surface spraying of titanium nitride hard coat；Its
Thickness is 30 μm.
2. the preparation method of decomposable asymmetric choice net pressure break ball seat described in claim 1, which is to be with magnesium alloy
The pressure break ball seat of base material, the preparation method of the pressure break ball seat include the following steps：
Surface clean：Oil removal treatment is carried out to the surface of decomposable asymmetric choice net ball seat, ball holder surface is cleaned with pure water later and blows surface
It is dry；
Generate Micro-Arc Oxidized Ceramic Coating：Using micro-arc oxidation, Micro-Arc Oxidized Ceramic Coating is grown in ball holder surface, the film
The thickness of layer is 27 μm；Wherein, the electrolyte that micro-arc oxidation uses is the mixed liquor of sodium metasilicate and sodium hydroxide, with the mixing
The total volume meter of liquid, concentration range 5-25g/L；Then use SiO2Colloidal sol hole sealing agent is in Micro-Arc Oxidized Ceramic Coating
Micropore is filled Seal treatment；
Prepare hard coat：Titanium nitride hard is prepared using multi-arc ion coating sedimentation on Micro-Arc Oxidized Ceramic Coating surface to apply
Layer；The thickness of the titanium nitride coating is 8 μm, and hardness is higher than 2100HV；Wherein, the arc current that multi-arc ion coating sedimentation uses for
50-80A, vacuum degree are 3.0 × 10-1-2Pa；
Coat heat-resistant polymer layer：In one layer of high temperature resistant polyorganosiloxane resin layer of surface spraying of titanium nitride hard coat；Its
Thickness is 30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192445.9A CN104879109B (en) | 2015-04-22 | 2015-04-22 | Decomposable asymmetric choice net pressure break ball holder surface composite film and ball seat and ball seat preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192445.9A CN104879109B (en) | 2015-04-22 | 2015-04-22 | Decomposable asymmetric choice net pressure break ball holder surface composite film and ball seat and ball seat preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104879109A CN104879109A (en) | 2015-09-02 |
| CN104879109B true CN104879109B (en) | 2018-08-14 |
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| CN106893975B (en) * | 2017-04-27 | 2019-04-19 | 济宁学院 | AlC/AlCN laminated coating cutter and its preparation process |
| CN107630676B (en) * | 2017-08-18 | 2020-07-10 | 中国石油天然气股份有限公司 | Surface treatment method of soluble fracturing bridge plug and soluble bridge plug |
| CN109812245A (en) * | 2017-11-21 | 2019-05-28 | 中国石油化工股份有限公司 | A kind of fracturing sliding bush |
| CN114437579A (en) * | 2020-10-16 | 2022-05-06 | 中国石油化工股份有限公司 | Composite coating and composition for soluble sliding sleeve ball seat |
| CN113308693B (en) * | 2021-04-30 | 2023-02-28 | 江苏龙山管件有限公司 | High-strength corrosion-resistant stainless steel pipe fitting and machining process thereof |
| CN116397189B (en) * | 2023-06-06 | 2023-08-15 | 四川苏克流体控制设备股份有限公司 | DLC-based high-wear-resistance low-friction coating material for hard seal ball valve and preparation method thereof |
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