CN104879109A - Decomposable fracturing ball seat surface composite coating, ball seat and ball seat manufacturing method - Google Patents
Decomposable fracturing ball seat surface composite coating, ball seat and ball seat manufacturing method Download PDFInfo
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- CN104879109A CN104879109A CN201510192445.9A CN201510192445A CN104879109A CN 104879109 A CN104879109 A CN 104879109A CN 201510192445 A CN201510192445 A CN 201510192445A CN 104879109 A CN104879109 A CN 104879109A
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Abstract
The invention provides a decomposable fracturing ball seat surface composite coating, a ball seat and a ball seat manufacturing method. The composite coating comprises a micro-arc oxidation ceramic coating, a hard coating and a high-temperature-resistant polymer coating, the micro-arc oxidation ceramic coating is coated on the surface of the ball seat, the hard coating is coated on the surface of the micro-arc oxidation ceramic coating, and the high-temperature-resistance polymer coating is coated on the surface of the hard coating. The manufacturing method is simple, convenient, feasible and high in operability. The decomposable fracturing ball seat has high corrosion resistance and erosion resistance in a wellhole. In addition, by the manufacturing method, the ball seat is protected well without having impact on mechanical performance and decomposing characteristics of a base material of the ball seat, and close combining among the coatings and between the coatings and a substrate can be realized.
Description
Technical field
The present invention relates to a kind of decomposable asymmetric choice net pressure break ball seat surface recombination rete and ball seat and ball seat preparation method, belong to oil-gas field development technical field.
Background technology
In oil-gas field development field, in order to improve well yield, multistage pitching sliding sleeve fracturing is Application comparison segmentation storey increase design technology widely.In this technology, pitching sliding sleeve system is that the fracturing fluid in tubing string provides the passage flowing to stratum.Before pressure break, sliding sleeve is in closed condition; By delivering pressure break ball to ball seat in fracturing process, open sliding sleeve, gets through the passage between tubing string and stratum; After fracturing work completes, pressure break ball returns and drains into ground.The material of traditional ball sockets is steel or cast iron, needs lower brill ball seat milling to be fallen, otherwise will affect individual well production efficiency or follow-up underground work.
Because the corrosion decomposition rate of magnadure in salt solution is far above steel or cast iron materials, therefore the decomposable asymmetric choice net pressure break ball seat that magnadure is processed into is adopted, can progressively decompose under pit shaft certain salinity formation water condition, not only save milling operation, but also ensure that the gas stream passage of big orifice.Before fracturing work, pressure break ball seat need be intact in pit shaft, can not lose bearing capacity, therefore need to carry out surface protection process to magnadure decomposable asymmetric choice net pressure break ball seat because of corrosion or erosion.
Summary of the invention
The object of the present invention is to provide a kind of decomposable asymmetric choice net pressure break ball seat surface recombination rete.
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 the preparation method that a kind of above-mentioned decomposable asymmetric choice net pressure break ball seat is provided.
For reaching above-mentioned purpose, the invention provides a kind of decomposable asymmetric choice net pressure break ball seat surface recombination rete, it comprises Micro-Arc Oxidized Ceramic Coating, hard coat, heat-resistant polymer coating;
Described Micro-Arc Oxidized Ceramic Coating is coated on the surface of described ball seat; Described hard coat is coated on the surface of described Micro-Arc Oxidized Ceramic Coating; Described heat-resistant polymer coating is coated on the surface of described hard coat.
According to composite film of the present invention, preferably, the thickness of described Micro-Arc Oxidized Ceramic Coating is 10-100 μm.
According to composite film of the present invention, preferably, the thickness of described heat-resistant polymer coating is 20-50 μm.
According to composite film of the present invention, preferably, described heat-resistant polymer comprises the copolymer or polyorganosiloxane resin that copolymer, polytrifluorochloroethylene, polytrifluorochloroethylene and ethene that polytetrafluoroethylene (PTFE), polytetrafluoroethylene (PTFE) and ethene formed formed, and the molecular weight of the copolymer that formed of copolymer, polytrifluorochloroethylene, polytrifluorochloroethylene and ethene that further preferred above-mentioned polytetrafluoroethylene (PTFE), polytetrafluoroethylene (PTFE) and ethene are formed or polyorganosiloxane resin is all not less than 1,000,000.
According to composite film of the present invention, preferably, the thickness of described hard coat is 3-50 μm.
According to composite film of the present invention, preferably, described hard coat is single or multiple lift.
According to composite film of the present invention, preferably, described hard coat comprises nitride coatings, carbonitride coating, carbide coating or diamond-like coating;
More preferably described nitride comprises titanium nitride, chromium nitride, aluminium nitride, vanadium nitride, zirconium nitride, silicon nitride or cubic boron nitride;
More preferably described carbonitride comprises titanium carbonitride, carbon chromium nitride, carbon aluminium nitride, vanadium carbide nitride, zirconium cyanonitride or carbonitride of silicium;
More preferably described carbide comprises titanium carbide, chromium carbide, aluminium carbide, vanadium carbide, zirconium carbide or carborundum.
Present invention also offers a kind of decomposable asymmetric choice net pressure break ball seat, it comprises ball seat matrix, above-mentioned decomposable asymmetric choice net pressure break ball seat surface recombination rete, and described composite film is coated on the surface of described ball seat matrix.
According to decomposable asymmetric choice net pressure break ball seat of the present invention, preferably, this ball seat matrix is prepared by magnadure.
Present invention also offers the preparation method of above-mentioned decomposable asymmetric choice net pressure break ball seat, it comprises the following steps:
A, in decomposable asymmetric choice net pressure break ball seat surface preparation Micro-Arc Oxidized Ceramic Coating, and hole sealing agent is adopted to carry out filling Seal treatment to the micropore in rete;
B, prepare hard coat on described Micro-Arc Oxidized Ceramic Coating surface;
C, external coating heat-resistant polymer coating at described hard coat.
According to method of the present invention, preferably, in above-mentioned steps a, described Micro-Arc Oxidized Ceramic Coating adopts micro-arc oxidation to prepare.
According to method of the present invention, preferably, in above-mentioned steps a, described hole sealing agent comprises epoxy resin, silicon dioxide gel or silicate of soda;
Above-mentioned micro-arc oxidation is ordinary skill in the art means, and the present invention just adopts micro-arc oxidation to prepare Micro-Arc Oxidized Ceramic Coating on the surface of decomposable asymmetric choice net pressure break ball seat, and the present invention does not improve micro-arc oxidation; The Micro-Arc Oxidized Ceramic Coating prepared by micro-arc oxidation is based on the ceramic film of ball seat substrate metal oxide, its composition can be subject to the impact of the bath composition of ball seat matrix alloy composition and micro-arc oxidation, if ball seat makes with magnadure, then MgO, Al can be contained in Micro-Arc Oxidized Ceramic Coating
2o
3if the electrolyte of micro-arc oxidation is silicate, then also contain SiO in Micro-Arc Oxidized Ceramic Coating
2if the electrolyte of micro-arc oxidation is aluminate, then contain Al in Micro-Arc Oxidized Ceramic Coating
2o
3; In the present invention, ceramic coating formed by micro-arc oxidation is at decomposable asymmetric choice net pressure break ball seat surface energising oxidation self-assembling formation, and the electrolyte that micro-arc oxidation adopts is the mixed liquor of silicate of soda and NaOH, and with the entire volume of this mixed liquor, its concentration range is 5-25g/L; Therefore, Micro-Arc Oxidized Ceramic Coating is with MgO, Al
2o
3, SiO
2be main Deng oxide, but the content of the present invention to its concrete component and component does not do requirement.
According to method of the present invention, preferably, in step a, containing micropore in the Micro-Arc Oxidized Ceramic Coating adopting micro-arc oxidation to prepare, this micropore is the known technology general knowledge of this area, as long as adopt micro-arc oxidation to prepare Micro-Arc Oxidized Ceramic Coating, just there will be micropore in this ceramic film, this micropore is caused by surface-discharge; Need in the present invention to carry out filling Seal treatment to above-mentioned micropore, filling Seal treatment technology is ordinary skill in the art means, and the application does not improve filling Seal treatment technology, and the hole sealing agent used in a preferred embodiment of the invention is SiO
2colloidal sol.
According to method of the present invention, preferably, in stepb, the preparation method of described hard coat comprises vapour deposition process or hot spray process.
Above-mentioned vapour deposition process, hot spray process are ordinary skill in the art means, the present invention just adopts vapour deposition process or hot spray process to prepare hard coat on the surface of Micro-Arc Oxidized Ceramic Coating, and the present invention does not improve vapour deposition process, hot spray process.
According to method of the present invention, before the step of decomposable asymmetric choice net pressure break ball seat surface preparation Micro-Arc Oxidized Ceramic Coating, need according to field operation, can first clean decomposable asymmetric choice net pressure break ball seat surface, cleaning process is the known technology general knowledge of this area, usual cleaning process comprises carries out oil removal treatment to the surface of decomposable asymmetric choice net ball seat, is dried up on its surface afterwards with pure water rotating wash bowl seating face.
Decomposable asymmetric choice net ball seat composite film of the present invention is made up of Micro-Arc Oxidized Ceramic Coating, hard coat and heat-resistant polymer coating, wherein, Micro-Arc Oxidized Ceramic Coating and ball seat substrate combinating strength high, corrosion-resistant; Hard coating hardness is large, has good erosion resistance effect; Heat-resistant polymer coating plays packaging effect to ball seat, can improve the corrosion-resistant of ball seat and erosive wear resistance.The preparation method of decomposable asymmetric choice net pressure break ball seat of the present invention is simple and feasible, and operability is good; By the decomposable asymmetric choice net pressure break ball seat that the preparation method of decomposable asymmetric choice net pressure break ball seat of the present invention obtains, it has good corrosion resistance and anti-erosion property in pit shaft.
The preparation method of decomposable asymmetric choice net pressure break ball seat provided by the invention, while forming good protection to ball seat, does not affect the mechanical property Sum decomposition characteristic of ball seat base material, can realize combining closely between coating and coating, between coating and matrix.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of 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.
Detailed description of the invention
The beneficial effect of implementation process of the present invention and generation will be explained by specific embodiment and accompanying drawing below, be intended to help reader to understand essence of the present invention and feature better, but not as can the restriction of practical range to this case.
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 take magnadure as the pressure break ball seat of base material, and the preparation method of this pressure break ball seat comprises the following steps:
Surface clean: carry out oil removal treatment to the surface of above-mentioned decomposable asymmetric choice net ball seat, dries up surface with pure water rotating wash bowl seating face afterwards;
Generate Micro-Arc Oxidized Ceramic Coating: adopt micro-arc oxidation, go out Micro-Arc Oxidized Ceramic Coating in ball seat superficial growth, the thickness of this rete is about 27 μm; Wherein, the mixed liquor that the electrolyte that micro-arc oxidation uses is silicate of soda and NaOH, with the entire volume of this mixed liquor, its concentration range is 5-25g/L; Adopt SiO subsequently
2colloidal sol hole sealing agent carries out filling Seal treatment to the micropore in Micro-Arc Oxidized Ceramic Coating;
Prepare hard coat: adopt multi-arc ion coating sedimentation to prepare titanium nitride hard coat on Micro-Arc Oxidized Ceramic Coating surface; The thickness of this titanium nitride coating is about 8 μm, and hardness is higher than 2100HV; Wherein, the arc current that multi-arc ion coating sedimentation adopts is 50-80A, and vacuum is 3.0 × 10
-1-2Pa;
Coating heat-resistant polymer layer: at the high temperature resistant polyorganosiloxane resin layer of surface spraying one deck of titanium nitride hard coat; Its thickness is 30 μm.
Embodiment 2
Present embodiments provide the decomposable asymmetric choice net pressure break ball seat prepared by embodiment 1, as shown in Figure 1, it comprises ball seat matrix 1 and decomposable asymmetric choice net pressure break ball seat surface recombination rete to the cross section structure schematic diagram of this decomposable asymmetric choice net pressure break ball seat; Described decomposable asymmetric choice net pressure break ball seat surface recombination rete comprises Micro-Arc Oxidized Ceramic Coating 2, hard coat 3, heat-resistant polymer coating 4; Described Micro-Arc Oxidized Ceramic Coating 2 is coated on the surface of described ball seat matrix 1; Described hard coat 3 is coated on the surface of described Micro-Arc Oxidized Ceramic Coating 2; Described heat-resistant polymer coating 4 is coated on the surface of described hard coat 3; Wherein, the thickness of Micro-Arc Oxidized Ceramic Coating 2 is 27 μm, and described hard coat 3 is titanium nitride hard coat, and its thickness is 8 μm, and described heat-resistant polymer coating 4 is high temperature resistant polyorganosiloxane resin layer, and its thickness is 30 μm.
Embodiment 3
The decomposable asymmetric choice net pressure break ball seat that embodiment 1 prepares by the present embodiment is soaked in 80 DEG C, in the potassium chloride solution of 1%, soaks after 15 days, the ball seat corrosion-free generation in surface; The water containing sand 20wt% is adopted to wash away with the speed of 8m/s the decomposable asymmetric choice net pressure break ball seat that the present embodiment 1 prepares; wash away more than 3 hours; decomposable asymmetric choice net pressure break ball seat surface recombination rete is still good to the protection of ball seat matrix, shows that the decomposable asymmetric choice net pressure break ball seat with above-mentioned composite film has good decay resistance and anti-erosion property.
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 take magnadure as the pressure break ball seat of base material, and the preparation method of this pressure break ball seat comprises the following steps:
Surface clean: carry out oil removal treatment to the surface of above-mentioned decomposable asymmetric choice net ball seat, dries up surface with pure water rotating wash bowl seating face afterwards;
Generate Micro-Arc Oxidized Ceramic Coating: adopt micro-arc oxidation, go out Micro-Arc Oxidized Ceramic Coating in ball seat superficial growth, the thickness of this rete is about 35 μm; Wherein, the mixed liquor that the electrolyte that micro-arc oxidation uses is silicate of soda and NaOH, with the entire volume of this mixed liquor, its concentration range is 5-25g/L; Adopt SiO subsequently
2colloidal sol hole sealing agent carries out filling Seal treatment to the micropore in Micro-Arc Oxidized Ceramic Coating;
Prepare hard coat: adopt multi-arc ion coating sedimentation to prepare titanium carbide hard coat on Micro-Arc Oxidized Ceramic Coating surface; The thickness of this titanium carbide coating is about 6 μm, and hardness is higher than 2400HV; Wherein, the arc current that multi-arc ion coating sedimentation adopts is 50-80A, and vacuum is 3.0 × 10
-1-2Pa;
Coating heat-resistant polymer layer: at surface spraying one deck high-temperature resistant polytetrafluoroethylmelt layer of titanium carbide hard coat; Its thickness is 42 μm.
Embodiment 5
Present embodiments provide the decomposable asymmetric choice net pressure break ball seat prepared by embodiment 4, as shown in Figure 1, it comprises ball seat matrix 1 and decomposable asymmetric choice net pressure break ball seat surface recombination rete to the cross section structure schematic diagram of this decomposable asymmetric choice net pressure break ball seat; Described decomposable asymmetric choice net pressure break ball seat surface recombination rete comprises Micro-Arc Oxidized Ceramic Coating 2, hard coat 3, heat-resistant polymer coating 4; Described Micro-Arc Oxidized Ceramic Coating 2 is coated on the surface of described ball seat matrix 1; Described hard coat 3 is coated on the surface of described Micro-Arc Oxidized Ceramic Coating 2; Described heat-resistant polymer coating 4 is coated on the surface of described hard coat 3; Wherein, the thickness of Micro-Arc Oxidized Ceramic Coating 2 is 35 μm, and described hard coat 3 is titanium carbide hard coat, and its thickness is 6 μm, and described heat-resistant polymer coating 4 is high-temperature resistant polytetrafluoroethylmelt layer, and its thickness is 42 μm.
Embodiment 6
The decomposable asymmetric choice net pressure break ball seat that embodiment 4 prepares by the present embodiment is soaked in 80 DEG C, in the potassium chloride solution of 1%, soaks after 15 days, the ball seat corrosion-free generation in surface; The water containing sand 20wt% is adopted to wash away with the speed of 8m/s the decomposable asymmetric choice net pressure break ball seat that the present embodiment 1 prepares; wash away more than 3 hours; decomposable asymmetric choice net pressure break ball seat surface recombination rete is still good to the protection of ball seat matrix, shows that the decomposable asymmetric choice net pressure break ball seat with above-mentioned composite film has good decay resistance and anti-erosion property.
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 take magnadure as the pressure break ball seat of base material, and the preparation method of this pressure break ball seat comprises the following steps:
Surface clean: carry out oil removal treatment to the surface of above-mentioned decomposable asymmetric choice net ball seat, dries up surface with pure water rotating wash bowl seating face afterwards;
Generate Micro-Arc Oxidized Ceramic Coating: adopt micro-arc oxidation, go out Micro-Arc Oxidized Ceramic Coating in ball seat superficial growth, the thickness of this rete is about 31 μm; Wherein, the mixed liquor that the electrolyte that micro-arc oxidation uses is silicate of soda and NaOH, with the entire volume of this mixed liquor, its concentration range is 5-25g/L; Adopt SiO subsequently
2colloidal sol hole sealing agent carries out filling Seal treatment to the micropore in Micro-Arc Oxidized Ceramic Coating;
Prepare hard coat: adopt multi-arc ion coating sedimentation to prepare titanium carbonitride hard coat on Micro-Arc Oxidized Ceramic Coating surface; The thickness of this titanium carbonitride coating is about 7 μm, and hardness is higher than 2300HV; Wherein, the arc current that multi-arc ion coating sedimentation adopts is 50-80A, and vacuum is 3.0 × 10
-1-2Pa;
Coating heat-resistant polymer layer: at the high temperature resistant polytrifluorochloroethylene layer of surface spraying one deck of titanium carbonitride hard coat; Its thickness is 45 μm.
Embodiment 8
Present embodiments provide the decomposable asymmetric choice net pressure break ball seat prepared by embodiment 7, as shown in Figure 1, it comprises ball seat matrix 1 and decomposable asymmetric choice net pressure break ball seat surface recombination rete to the cross section structure schematic diagram of this decomposable asymmetric choice net pressure break ball seat; Described decomposable asymmetric choice net pressure break ball seat surface recombination rete comprises Micro-Arc Oxidized Ceramic Coating 2, hard coat 3, heat-resistant polymer coating 4; Described Micro-Arc Oxidized Ceramic Coating 2 is coated on the surface of described ball seat matrix 1; Described hard coat 3 is coated on the surface of described Micro-Arc Oxidized Ceramic Coating 2; Described heat-resistant polymer coating 4 is coated on the surface of described hard coat 3; Wherein, the thickness of Micro-Arc Oxidized Ceramic Coating 2 is 31 μm, and described hard coat 3 is titanium carbonitride hard coat, and its thickness is 7 μm, and described heat-resistant polymer coating 4 is high temperature resistant polytrifluorochloroethylene layer, and its thickness is 45 μm.
Embodiment 9
The decomposable asymmetric choice net pressure break ball seat that embodiment 7 prepares by the present embodiment is soaked in 80 DEG C, in the potassium chloride solution of 1%, soaks after 15 days, the ball seat corrosion-free generation in surface; The water containing sand 20wt% is adopted to wash away with the speed of 8m/s the decomposable asymmetric choice net pressure break ball seat that the present embodiment 1 prepares; wash away more than 3 hours; decomposable asymmetric choice net pressure break ball seat surface recombination rete is still good to the protection of ball seat matrix, shows that the decomposable asymmetric choice net pressure break ball seat with above-mentioned composite film has good decay resistance and anti-erosion property.
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 take magnadure as the pressure break ball seat of base material, and the preparation method of this pressure break ball seat comprises the following steps:
Surface clean: carry out oil removal treatment to the surface of above-mentioned decomposable asymmetric choice net ball seat, dries up surface with pure water rotating wash bowl seating face afterwards;
Generate Micro-Arc Oxidized Ceramic Coating: adopt micro-arc oxidation, go out Micro-Arc Oxidized Ceramic Coating in ball seat superficial growth, the thickness of this rete is about 29 μm; Wherein, the mixed liquor that the electrolyte that micro-arc oxidation uses is silicate of soda and NaOH, with the entire volume of this mixed liquor, its concentration range is 5-25g/L; Adopt SiO subsequently
2colloidal sol hole sealing agent carries out filling Seal treatment to the micropore in Micro-Arc Oxidized Ceramic Coating;
Prepare hard coat: adopt multi-arc ion coating sedimentation in Micro-Arc Oxidized Ceramic Coating surface preparation chrome carbide hard coating; The thickness of this chromium carbide coating is about 8 μm, and hardness is higher than 2000HV; Wherein, the arc current that multi-arc ion coating sedimentation adopts is 50-80A, and vacuum is 3.0 × 10
-1-2Pa;
Coating heat-resistant polymer layer: at the high temperature resistant polyorganosiloxane resin layer of surface spraying one deck of chrome carbide hard coating; Its thickness is 40 μm.
Embodiment 11
Present embodiments provide the decomposable asymmetric choice net pressure break ball seat prepared by embodiment 10, as shown in Figure 1, it comprises ball seat matrix 1 and decomposable asymmetric choice net pressure break ball seat surface recombination rete to the cross section structure schematic diagram of this decomposable asymmetric choice net pressure break ball seat; Described decomposable asymmetric choice net pressure break ball seat surface recombination rete comprises Micro-Arc Oxidized Ceramic Coating 2, hard coat 3, heat-resistant polymer coating 4; Described Micro-Arc Oxidized Ceramic Coating 2 is coated on the surface of described ball seat matrix 1; Described hard coat 3 is coated on the surface of described Micro-Arc Oxidized Ceramic Coating 2; Described heat-resistant polymer coating 4 is coated on the surface of described hard coat 3; Wherein, the thickness of Micro-Arc Oxidized Ceramic Coating 2 is 29 μm, and described hard coat 3 is chrome carbide hard coating, and its thickness is 8 μm, and described heat-resistant polymer coating 4 is high temperature resistant polyorganosiloxane resin layer, and its thickness is 40 μm.
Embodiment 12
The decomposable asymmetric choice net pressure break ball seat that embodiment 10 prepares by the present embodiment is soaked in 80 DEG C, in the potassium chloride solution of 1%, soaks after 15 days, the ball seat corrosion-free generation in surface; The water containing sand 20wt% is adopted to wash away with the speed of 8m/s the decomposable asymmetric choice net pressure break ball seat that the present embodiment 1 prepares; wash away more than 3 hours; decomposable asymmetric choice net pressure break ball seat surface recombination rete is still good to the protection of ball seat matrix, shows that the decomposable asymmetric choice net pressure break ball seat with above-mentioned composite film has good decay resistance and anti-erosion property.
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 take magnadure as the pressure break ball seat of base material, and the preparation method of this pressure break ball seat comprises the following steps:
Surface clean: carry out oil removal treatment to the surface of above-mentioned decomposable asymmetric choice net ball seat, dries up surface with pure water rotating wash bowl seating face afterwards;
Generate Micro-Arc Oxidized Ceramic Coating: adopt micro-arc oxidation, go out Micro-Arc Oxidized Ceramic Coating in ball seat superficial growth, the thickness of this rete is about 31 μm; Wherein, the mixed liquor that the electrolyte that micro-arc oxidation uses is silicate of soda and NaOH, with the entire volume of this mixed liquor, its concentration range is 5-25g/L; Adopt SiO subsequently
2colloidal sol hole sealing agent carries out filling Seal treatment to the micropore in Micro-Arc Oxidized Ceramic Coating;
Prepare hard coat: adopt multi-arc ion coating sedimentation to prepare zirconium cyanonitride hard coat on Micro-Arc Oxidized Ceramic Coating surface; The thickness of this zirconium cyanonitride coating is about 5 μm, and hardness is higher than 2500HV; Wherein, the arc current that multi-arc ion coating sedimentation adopts is 50-80A, and vacuum is 3.0 × 10
-1-2Pa;
Coating heat-resistant polymer layer: at the high temperature resistant polyorganosiloxane resin layer of surface spraying one deck of titanium nitride hard coat; Its thickness is 33 μm.
Embodiment 14
Present embodiments provide the decomposable asymmetric choice net pressure break ball seat prepared by embodiment 13, as shown in Figure 1, it comprises ball seat matrix 1 and decomposable asymmetric choice net pressure break ball seat surface recombination rete to the cross section structure schematic diagram of this decomposable asymmetric choice net pressure break ball seat; Described decomposable asymmetric choice net pressure break ball seat surface recombination rete comprises Micro-Arc Oxidized Ceramic Coating 2, hard coat 3, heat-resistant polymer coating 4; Described Micro-Arc Oxidized Ceramic Coating 2 is coated on the surface of described ball seat matrix 1; Described hard coat 3 is coated on the surface of described Micro-Arc Oxidized Ceramic Coating 2; Described heat-resistant polymer coating 4 is coated on the surface of described hard coat 3; Wherein, the thickness of Micro-Arc Oxidized Ceramic Coating 2 is 31 μm, and described hard coat 3 is zirconium cyanonitride hard coat, and its thickness is 5 μm, and described heat-resistant polymer coating 4 is high temperature resistant polyorganosiloxane resin layer, and its thickness is 33 μm.
Embodiment 15
The decomposable asymmetric choice net pressure break ball seat that embodiment 13 prepares by the present embodiment is soaked in 80 DEG C, in the potassium chloride solution of 1%, soaks after 15 days, the ball seat corrosion-free generation in surface; The water containing sand 20wt% is adopted to wash away with the speed of 8m/s the decomposable asymmetric choice net pressure break ball seat that the present embodiment 1 prepares; wash away more than 3 hours; decomposable asymmetric choice net pressure break ball seat surface recombination rete is still good to the protection of ball seat matrix, shows that the decomposable asymmetric choice net pressure break ball seat with above-mentioned composite film has good decay resistance and anti-erosion property.
Claims (10)
1. a decomposable asymmetric choice net pressure break ball seat surface recombination rete, it comprises Micro-Arc Oxidized Ceramic Coating, hard coat, heat-resistant polymer coating;
Described Micro-Arc Oxidized Ceramic Coating is coated on the surface of described ball seat; Described hard coat is coated on the surface of described Micro-Arc Oxidized Ceramic Coating; Described heat-resistant polymer coating is coated on the surface of described hard coat.
2. composite film according to claim 1, wherein, the thickness of described Micro-Arc Oxidized Ceramic Coating is 10-100 μm.
3. composite film according to claim 1, wherein, the thickness of described heat-resistant polymer coating is 20-50 μm.
4. composite film according to claim 3, wherein, described heat-resistant polymer comprises the copolymer or polyorganosiloxane resin that copolymer, polytrifluorochloroethylene, polytrifluorochloroethylene and ethene that polytetrafluoroethylene (PTFE), polytetrafluoroethylene (PTFE) and ethene formed formed.
5. composite film according to claim 1, wherein, the thickness of described hard coat is 3-50 μm, and the hardness of hard coat is higher than 1000HV.
6. composite film according to claim 5, wherein, described hard coat is single or multiple lift.
7. the composite film according to claim 5 or 6, wherein, described hard coat comprises nitride coatings, carbonitride coating, carbide coating or diamond-like coating;
Preferred described nitride comprises titanium nitride, chromium nitride, aluminium nitride, vanadium nitride, zirconium nitride, silicon nitride or cubic boron nitride;
Preferred described carbonitride comprises titanium carbonitride, carbon chromium nitride, carbon aluminium nitride, vanadium carbide nitride, zirconium cyanonitride or carbonitride of silicium;
Preferred described carbide comprises titanium carbide, chromium carbide, aluminium carbide, vanadium carbide, zirconium carbide or carborundum.
8. a decomposable asymmetric choice net pressure break ball seat, it comprises ball seat matrix, decomposable asymmetric choice net pressure break ball seat surface recombination rete described in any one of claim 1-7, and described composite film is coated on the surface of described ball seat matrix;
Preferred described ball seat matrix is prepared by magnadure.
9. a preparation method for decomposable asymmetric choice net pressure break ball seat according to claim 8, it comprises the following steps:
A, in decomposable asymmetric choice net pressure break ball seat surface preparation Micro-Arc Oxidized Ceramic Coating, and hole sealing agent is adopted to carry out filling Seal treatment to the micropore in rete;
Preferred described Micro-Arc Oxidized Ceramic Coating adopts micro-arc oxidation to prepare;
Also preferred described hole sealing agent comprises epoxy resin, silicon dioxide gel or silicate of soda;
B, prepare hard coat on described Micro-Arc Oxidized Ceramic Coating surface;
C, external coating heat-resistant polymer coating at described hard coat.
10. method according to claim 9, wherein, in stepb, the preparation method of described hard coat comprises vapour deposition process or hot spray process.
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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 |
| CN107630676A (en) * | 2017-08-18 | 2018-01-26 | 中国石油天然气股份有限公司 | The surface treatment method and solvable bridging plug of a kind of solvable press-fracturing bridge plug |
| 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 |
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| CN113308693A (en) * | 2021-04-30 | 2021-08-27 | 江苏龙山管件有限公司 | High-strength corrosion-resistant stainless steel pipe fitting and machining process thereof |
| 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 |
| CN116397189A (en) * | 2023-06-06 | 2023-07-07 | 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 |
| 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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