CN108130533A - One kind has high wear-resistant anti-corrosion hard seal ball valve and preparation method - Google Patents

One kind has high wear-resistant anti-corrosion hard seal ball valve and preparation method Download PDF

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Publication number
CN108130533A
CN108130533A CN201711394433.XA CN201711394433A CN108130533A CN 108130533 A CN108130533 A CN 108130533A CN 201711394433 A CN201711394433 A CN 201711394433A CN 108130533 A CN108130533 A CN 108130533A
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China
Prior art keywords
coating
valve seat
ball valve
sphere
plating
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CN201711394433.XA
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张世宏
胡凯
张�林
蔡飞
吴朝军
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Anhui University of Technology AHUT
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Anhui University of Technology AHUT
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Priority to CN201711394433.XA priority Critical patent/CN108130533A/en
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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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/324—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal matrix material layer comprising a mixture of at least two metals or metal phases or a metal-matrix material with hard embedded particles, e.g. WC-Me
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/0021—Reactive sputtering or evaporation
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0641—Nitrides
    • 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
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
    • C23C14/325—Electric arc evaporation
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • 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
    • 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
    • C23C4/129—Flame spraying

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

The present invention, which discloses one kind, has high wear-resistant anti-corrosion hard seal ball valve and preparation method, belongs to metal surface field of engineering technology.The hard seal ball valve includes steel globe valve matrix, synthesizes the metal carbide ceramic coating for having hundreds of microns magnitude and the nitride ceramics coating of micro-nano magnitude on steel globe valve matrix successively, and metal carbide ceramic coating is WC Co bases or heat safe Cr3C2NiCr base coatings, nitride ceramics coating is fine and close Cr, Ti, AlCr or other binary or polynary nitride laminated coating, and preparation method includes synthesizing cermet hardened layer and nitride multilayer sealing of hole layer successively on ball valve surface using supersonic flame spraying and vacuum ionic electroplating method.Surface provided by the invention, which is modified hard seal ball valve, has the composite performances such as high rigidity, low-friction coefficient, wear-resisting, anti-corrosion, surface microhardness reaches 1800~3000HV, anti- standard salt fog test 240 hours or more significantly improves the service life of hard seal ball valve.

Description

One kind has high wear-resistant anti-corrosion hard seal ball valve and preparation method
Technical field：
The invention belongs to metal surface field of engineering technology, and in particular to one kind have high wear-resistant anti-corrosion hard seal ball valve and Preparation method.
Background technology：
Hard seal ball valve service life is generally shorter at present, main failure forms have abrasion, erosion, cavitation erosion, oxidation with Corrosion etc..For petrochemical industry field, the small hard particles intrusion sealing surface in fluid easily generates plough-effect and makes Into sealing surface scratch, pressure wound and abrasive wear, while corrosive medium can accelerate to fail.Harsh working environment to ball for ball valve and The wearability and corrosion resistance of valve seat propose higher requirement, particularly gas solid, liquid admittedly or three-phase blending agent is to ball valve Sealing surface wear is extremely serious, and sealing surface excessive wear or scuffing is easily caused to pull and generate leakage.In the sealing surface of ball valve It is upper to carry out necessary surface Hardening Treatment, the characteristics such as high rigidity, wear-resisting, anti-corrosion, high temperature resistant are made it have, ball can be significantly improved The working performance of valve, prolongs the service life, and substantially increases the competitiveness of valve enterprise in the market.
The common surface treatment method in ball valve surface has：Nitriding and thermal spraying (weldering) etc..Plasma-nitriding method can be with shape The glow discharge nitriding compound layer relatively thin into 0.2~0.4mm since nitride brittleness is small and nitriding layer is fine and close, has higher Hardness and good wearability, but chemical industry strong corrosive media is then unsuitable for using, ball valve sealing face is vulnerable to corrosion Generate failure.Supersonic flame spraying (HVOF) is commonly used to prepare WC-Co, Cr3C2The metal-cermic coatings such as-NiCr have operation Simply, efficient, the features such as coating quality is good, suitable for the processing and large-scale production of large-scale ball for ball valve.But dusty spray Granularity directly influence coating compactness, sprayed coating surface limits to a certain extent there are 1%~2% porosity The wear and corrosion behavior of sprayed coating, common sprayed coating hole sealing agent such as SiO2、Al2O3、CrO3Compound hole sealing agent, although with compared with The shortcomings that good sealing of hole effect, organic or inorganic hole sealing agent deposits non-refractory when in use and relatively thin sealing of hole layer, and in abrasion environment In easily be destroyed, conventional hole sealing agent for ball valve sprayed coating sealing of hole effect there are still use limitation.
The one kind of vacuum ion plating as physical vapour deposition (PVD) (PVD) has the characteristics of ionization level is high, film forming speed is fast, The hard coat that film-substrate cohesion is outstanding, homogeneous can be obtained, effective sealing pores can be carried out to sprayed coating surface, had Conducive to large-scale industrial production.Single HVOF coating technologies have been unable to meet the performance requirement under hard seal ball valve harshness operating mode, Vacuum ionic electroplating method deposition tool is utilized by reaching the sprayed coating of 800~1200HV in ball valve preparation hardness, then on its surface Have hardness high-wearing feature is good, fusing point high thermal stability is good, good corrosion resistance hardness up to 1800~3000HV hard nitride Metal coating, sprayed coating play hardness supporting role to hard nitrided metal coating, and hard coat is to sprayed coating corrosion-proof wear Property plays the role of also functioning to preferable sealing of hole while castering action.
Invention content：
The object of the present invention is to provide one kind to have high wear-resistant anti-corrosion hard seal ball valve and preparation method, and the present invention is using super Velocity of sound flame-spraying (HVOF) and vacuum ionic electroplating method difference precipitated carbide metal-cermic coating and nitride ceramics coating Stiff dough seal ball-valve is prepared, which constitutes rigidity, toughness, hardness, wear-resisting and resistance to together with steel globe valve matrix Corrosion can be respectively provided with the ball valve system of higher level, significantly improve the service life of ball valve.
The technical concept of the present invention is, in the carbide gold of one number of plies of surface spraying, the hundred micron dimension thickness of steel globe valve Belong to pottery hardened layer, be then further added by the PVD ceramic coatings of one layer of micro-nano magnitude thickness, by composite modified layer play it is wear-resistant, It is anti-corrosion, strengthen the effects that.Wherein particularly critical, the PVD coatings prepared using vacuum ionic coating technology realize sprayed coating Sealing of hole effect.
There is one kind provided by the present invention high wear-resistant anti-corrosion hard seal ball valve to include sphere, valve seat and surface recombination painting Layer, the surface composite coating are made of inner coating and multi-layer vacuum ion coating plating；The inner coating is by the ball The thickness that body and valve seat carry out supersonic flame spraying cure process formation is 100~350 μm, hardness is 800~1200HV's Coating, the multi-layer vacuum ion coating plating be to the sphere after inner coating spray treatment and valve seat using vacuum from Multi-layer vacuum ion coating plating of the thickness that sub- coating technology deposits on its surface at 3~10 μm.Effective sealing of hole is played to sprayed coating Its corrosion resisting property is improved while effect, case hardness is made to further improve to 1800~3000HV.
The vacuum ionic coating technology uses the method for electric arc electric discharge, the direct evaporated gold on four solid state cathode targets Belong to, by cathode substance ion deposition to substrate surface, depositing temperature is 300~550 DEG C.
The present invention provides a kind of preparation method with high wear-resistant anti-corrosion hard seal ball valve, and this method is as follows：
A, the surface preparation of ball valve body and valve seat：The sphere and valve seat are placed in supersonic wave cleaning machine, first existed Ultrasonic removing oil-removing wax, then removes residual acetone, finally using water temperature as 20~30 DEG C in 25 DEG C of alcohol in 25 DEG C of acetone Deionized water cleaning, dried after dehydration.
B, the spraying pre-treatment of the sphere and valve seat：The sphere and valve seat after being dried to step a are carried out at sandblasting Reason, sand-blast material are corundum sand (Al2O3)。
C, supersonic flame spraying prepares inner coating：The sphere after step b sandblastings and valve seat are carried out using spray gun Spray treatment, sprayed on material are that the base and doped Cr or Ni powder of WC-Co or sprayed on material are Cr suitable for high temperature3C2- NiCr bases are mixed Miscellaneous WC or Ni powder, spray distance be 330~400mm, using oxygen as combustion adjuvant, oxygen gas flow rate be 50~90L/h, kerosene As fuel, kerosene flow velocity is 27~32L/h, and for nitrogen as powder feeding carrier gas, carrier gas flux is 5~8L/h, and spraying temperature controls At 80~200 DEG C, obtain containing internally coated sphere and valve seat.
D, the pre-treatment of multi-layer vacuum ion coating plating is deposited：It is polished described in step c using 120~No. 1200 sand paper successively Sprayed coating surface containing internally coated ball valve body and valve seat, and be processed by shot blasting to the roughness of the sprayed coating surface Ra is less than 0.8 μm, then will be placed in supersonic wave cleaning machine containing internally coated sphere and valve seat described in after polishing treatment, It is dried after being cleaned in 25 DEG C of alcohol.
E, the preheating before multi-layer vacuum ion coating plating is deposited：Contain internally coated ball described in after step d is dried Body and valve seat are fixed on the pivoted frame in vacuum ion plating coating machine, suction to 3.0 × 10-4After Pa, start the pivoted frame Rotating speed is made to be heated for 3r/min to described containing internally coated sphere and valve seat, 60~120min of heating time, temperature is 300~500 DEG C of gradient-heateds.
F, glow discharge：When vacuum chamber base vacuum reaches 1.0 × 10-4During Pa, it is passed through into vacuum ion plating coating machine Make vacuum chamber pressure for 2.0~4.0Pa, pivoted frame rotating speed is 3r/min, and temperature is 300-550 DEG C, and it is inclined to start grid bias power supply loading It is depressed into 400V, 10~30min of surface containing internally coated sphere and valve seat described in argon ion bombardment.
G, ion etching：Continue to be passed through 100~200sccm argon gas into PVD coating machines, start ion source loading current extremely 30~80A, ion source duty ratio are 40~60%, start grid bias power supply loading and are biased into 50~300V, bias duty ratio is 80%, it is 60~90A to open column arc current, and pivoted frame rotating speed is 3r/min, and etch period is 10~30min.
H, coating process：Reaction gas N is filled with into PVD coating machines2, adjust nitrogen flow (400~800sccm), work Make air pressure (1.0~5.0Pa), operating temperature (300~550 DEG C), pulsed bias (50-200V), duty ratio (20-100%), target Material electric current (70-220A) starts coating multi-layer vacuum ion coating plating afterwards, is prepared after 1~5h of sedimentation time described with height Wear-resistant anti-corrosion hard seal ball valve realizes the multilayered structure of coating by controlling closing and the startup of different targets, passes through control The coating time controls coating layer thickness.
Finally to coating quality inspection：The hardness of coating surface, adhesive force, pin hole, film thickness, film adhesion are examined It looks into, to being packed after the coating outer surface cleaning of quality inspection qualification.
The multi-layer vacuum ion coating plating is TiN, CrN, TiAlN, AlCrN nitride laminated coating, and the multilayer is true The structure of empty ion coating plating is TiN/TiAlN, CrN/AlCrN, TiN/AlCrN and CrN/TiAlN alternating deposit 5~10 times, The thickness of the multi-layer vacuum ion coating plating is 3~10 μm.
The present invention after sprayed coating surface depositing coating, makes spraying layer porosity be reduced by 1%~2% using PVD technique To PVD coating porosities<0.1%.The hard seal ball valve of the present invention has high rigidity, high-wearing feature, excellent corrosion resistance etc. Composite performance, surface microhardness reach 1800~3000HV, and the bond strength of sprayed coating and ball valve matrix is more than 75MPa, PVD Coating binding force reaches HF1 grades, and anti-standard salt fog test was more than 240 hours.
There is the hard seal ball valve of the present invention composite performances, the surfaces such as high rigidity, high-wearing feature, excellent corrosion resistance to show Microhardness reaches 1800~3000HV, and the bond strength of sprayed coating and ball valve matrix is more than 75MPa, and PVD coating binding forces reach HF1 grades, anti-standard salt fog test was more than 240 hours.
The invention has the advantages that using the composite modified processing of supersonic flame spraying and physical vapour deposition (PVD), make Ball valve surface is initially formed one layer of hardness as 800~1300HV, and porosity is less than 2% carbide cermet hardened layer, then Carry out sealing pores with physical vapour deposition (PVD) multi-layered ceramic coating, ultimately formed on ball valve surface one layer of hardness reach 1800~ 3000HV and the composite modified layer with good corrosion resistance.The present invention passes through rational process optimization and institutional framework tune Control makes composite modified layer/ball valve matrix reach Optimized Matching so as to possess high rigidity, low-friction coefficient, high-wearing feature and excellent Corrosion proof composite performance solves the sealing of hole problem of single supersonic spray coating cure process, and improves PVD coating binding forces, Hard seal ball valve can be made to obtain higher reliability and longer service life.
Description of the drawings：
Fig. 1 is the hardness of three kinds of stainless steel comparison base material, HVOF coatings, HVOF+PVD composite coatings materials in embodiment 1 Curve.
Specific embodiment：
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation Example.
Embodiment 1：Stainless steel sphere after sanding and polishing and valve seat are placed in supersonic wave cleaning machine, first at 25 DEG C In acetone after ultrasonic removing oil-removing wax, then residual acetone is removed in 25 DEG C of alcohol, finally using water temperature as 20~30 DEG C go from Sub- water cleaning, is dried after dehydration.Then blasting treatment is carried out to sphere and valve seat, sand-blast material is corundum sand.Use spray gun Spray treatment, dusty spray WC-12Co, spray distance 330mm are carried out to the sphere after sandblasting and valve seat, oxygen gas flow rate is 50L/h, kerosene flow velocity are 30L/h.Sprayed coating is ground using 120~No. 1200 sand paper and be polished to 0.5 μm of roughness Ra successively, Then it places it in supersonic wave cleaning machine, is dried after being cleaned in 25 DEG C of alcohol.Sphere after drying and valve seat are fixed In vaccum ion coater on pivoted frame, suction to 3.0 × 10-4After Pa, starting pivoted frame makes rotating speed for 3r/min until plating Film terminates, and after heating 110min under 300~450 DEG C of temperature gradients to sphere and valve seat, is passed through into vaccum ion coater Argon gas makes vacuum chamber pressure for 4.0Pa, temperature is made to be kept for 420 DEG C until plated film terminates, startup grid bias power supply loading is biased into 400V, argon ion bombardment ball valve surface 10min.Continue to be passed through 100sccm argon gas into vaccum ion coater, start ion source For loading current to 30~80A, it is 60% to adjust ion source duty ratio, starts grid bias power supply loading and is biased into 50~300V, biases Duty ratio is 80%, opens column arc, and column arc current is 80A, etch period 40min.N is filled with into vaccum ion coater2 Vacuum pressure is made to reach 2.5Pa, temperature is kept for 420 DEG C, and adjusting is biased into 60V, and duty ratio reaches 100%, closes column arc, opens 1, No. 3 Ti target, target current 160A, in sprayed coating surface depositing TiN signal layer coating, sedimentation time 10min；Keep vacuum Degree, temperature, gas pressure intensity, bias are constant, close 1, No. 3 targets, open 2, No. 4 TiAl targets, target current 140A, depositing Ti AlN Coating 20min；TiN coatings and TiAlN coating process parameter totally 10 times are repeated, obtains TiN/TiAlN laminated coatings.Process cycles After ball valve cool to room temperature with the furnace, open vacuum chamber chamber door, take out ball valve.
Embodiment 2：Carbon steel sphere after sanding and polishing and valve seat are placed in supersonic wave cleaning machine, first 25 DEG C third In ketone after ultrasonic removing oil-removing wax, then residual acetone is removed in 25 DEG C of alcohol, finally using water temperature as 20~30 DEG C of deionization Water cleans, and is dried after dehydration.Then blasting treatment is carried out to sphere and valve seat, sand-blast material is corundum sand.Use spray gun pair Sphere and valve seat after sandblasting carry out spray treatment, dusty spray Cr3C2- NiCr, spray distance 380mm, oxygen gas flow rate are 60L/h, kerosene flow velocity are 30L/h.Sprayed coating surface light is polishing to using 120~No. 1200 sand paper successively, is then put In supersonic wave cleaning machine, dried after being cleaned in 25 DEG C of alcohol.Sphere after drying and valve seat are fixed on vacuum ionic In coating machine on pivoted frame, suction to 3.0 × 10-4After Pa, starting pivoted frame makes rotating speed for 3r/min until plated film terminates, to ball After body and valve seat heat 110min under 300~500 DEG C of temperature gradients, argon gas is passed through into vaccum ion coater, makes vacuum Chamber pressure is 4.0Pa, temperature is made to be kept for 480 DEG C until plated film terminates, startup grid bias power supply loading is biased into 400V, and argon ion bangs Bat valve surface 10min.Continue to be passed through 100sccm argon gas into vaccum ion coater, start ion source loading current to 30 ~80A, it is 60% to adjust ion source duty ratio, starts grid bias power supply loading and is biased into 50~300V, and bias duty ratio is 80%, Column arc is opened, column arc current is 80A, etch period 40min.N is filled with into vaccum ion coater2Reach vacuum pressure 3.5Pa, temperature are kept for 480 DEG C, and adjusting is biased into 80V, and duty ratio reaches 80%, closes column arc, open 1, No. 3 Cr targets, target electricity It flows for 160A, CrN signal layer coatings, sedimentation time 20min is deposited in sprayed coating surface；Keep vacuum degree, temperature, gas pressure By force, constant, 1, No. 3 targets of closing, 2, No. 4 AlCr targets of unlatching, target current 140A, depositing Al CrN coatings 40min are biased；It repeats CrN coatings and AlCrN coating process parameter totally 6 times, obtain CrN/AlCrN laminated coatings.Ball valve is with stove after coating process It is cooled to room temperature, opens vacuum chamber chamber door, take out ball valve.

Claims (4)

1. one kind has high wear-resistant anti-corrosion hard seal ball valve, it is characterised in that the hard seal ball valve includes sphere, valve seat and table Surface composite coating, the surface composite coating are made of inner coating and multi-layer vacuum ion coating plating；The inner coating is to pass through The thickness that supersonic flame spraying cure process formation is carried out to the sphere and valve seat is 100~350 μm, hardness be 800~ The coating of 1200HV, the multi-layer vacuum ion coating plating are to the sphere after inner coating spray treatment and valve seat profit With multi-layer vacuum ion coating plating of the thickness that vacuum ionic coating technology deposits on its surface at 3~10 μm.
2. according to claim 1 have high wear-resistant anti-corrosion hard seal ball valve, it is characterised in that the vacuum ion plating skill Art uses the method for electric arc electric discharge, the direct evaporated metal on four solid state cathode targets, by cathode substance ion deposition to base Material surface, depositing temperature are 300~550 DEG C.
3. there is the preparation method of high wear-resistant anti-corrosion hard seal ball valve described in claim 1, it is characterised in that this method specifically walks It is rapid as follows：
A, the surface preparation of sphere and valve seat：The sphere and valve seat are placed in supersonic wave cleaning machine, first 25 DEG C third Ultrasonic removing oil-removing wax, then removes residual acetone in 25 DEG C of alcohol in ketone, finally using water temperature as 20~30 DEG C of deionization Water cleans, and is dried after dehydration；
B, the spraying pre-treatment of the ball valve body and valve seat：The sphere and valve seat after being dried to step a are carried out at sandblasting Reason, sand-blast material is corundum sand；
C, supersonic flame spraying prepares inner coating：The sphere after step b sandblastings and valve seat are sprayed using spray gun Processing, sprayed on material be the base and doped Cr or Ni powder of WC-Co or sprayed on material for the Cr suitable for high temperature3C2- NiCr is base and doped WC or Ni powder, spray distance is 330~400mm, and using oxygen as combustion adjuvant, oxygen gas flow rate is 50~90L/h, and kerosene is made For fuel, kerosene flow velocity is 27~32L/h, and for nitrogen as powder feeding carrier gas, carrier gas flux is 5~8L/h, and spraying temperature control exists It 80~200 DEG C, obtains containing internally coated sphere and valve seat；
D, the pre-treatment of multi-layer vacuum ion coating plating is deposited：It is polished using 120~No. 1200 sand paper and contained described in step c successively The sprayed coating surface of internally coated sphere and valve seat, and it is processed by shot blasting that the roughness Ra to the sprayed coating surface is less than It 0.8 μm, then will be placed in supersonic wave cleaning machine containing internally coated sphere and valve seat described in after polishing treatment, at 25 DEG C It is dried after being cleaned in alcohol；
E, the preheating before multi-layer vacuum ion coating plating is deposited：Described in after step d is dried containing internally coated sphere and Valve seat is fixed on the pivoted frame in vacuum ion plating coating machine, suction to 3.0 × 10-4After Pa, starting the pivoted frame makes to turn Speed is 3r/min, is heated to described containing internally coated sphere and valve seat, 60~120min of heating time, temperature 300 ~500 DEG C of gradient-heateds；
F, glow discharge：When vacuum chamber base vacuum reaches 1.0 × 10-4During Pa, being passed through into vacuum ion plating coating machine makes very Empty room pressure is 2.0~4.0Pa, and pivoted frame rotating speed is 3r/min, and temperature is 300-550 DEG C, starts grid bias power supply loading and is biased into 400V, 10~30min of surface containing internally coated sphere and valve seat described in argon ion bombardment；
G, ion etching：Continue to be passed through 100~200sccm argon gas into PVD coating machines, startup ion source loading current to 30~ 80A, ion source duty ratio are 40~60%, start grid bias power supply loading and are biased into 50~300V, bias duty ratio is 80%, is beaten Column arc current is opened as 60~90A, pivoted frame rotating speed is 3r/min, and etch period is 10~30min；
H, coating process：Reaction gas N is filled with into PVD coating machines2, adjust 400~800sccm of nitrogen flow, operating air pressure 1.0~5.0Pa, 300~550 DEG C of operating temperature, pulsed bias 50-200V, duty ratio 20-100%, target current 70-220A After start coating multi-layer vacuum ion coating plating, being prepared after 1~5h of sedimentation time described has high wear-resistant anti-corrosion hard sealing Ball valve.
4. preparation method according to claim 3, it is characterised in that the multi-layer vacuum ion coating plating for TiN, CrN, TiAlN, AlCrN nitride laminated coating, the structure of the multi-layer vacuum ion coating plating is TiN/TiAlN, CrN/AlCrN, TiN/AlCrN and CrN/TiAlN alternating deposits 5~10 times, the thickness of the multi-layer vacuum ion coating plating is 3~10 μm.
CN201711394433.XA 2017-12-21 2017-12-21 One kind has high wear-resistant anti-corrosion hard seal ball valve and preparation method Pending CN108130533A (en)

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CN109161856A (en) * 2018-08-20 2019-01-08 江苏神通阀门股份有限公司 It is a kind of with nano ceramics-metal composite coating stiff dough ball valve and manufacturing method
CN110343993A (en) * 2019-08-07 2019-10-18 广东工业大学 A kind of carbide surface processing method and application
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CN111791032A (en) * 2020-07-24 2020-10-20 河南华中科翔石油机械有限公司 Melt-blown processing technology for wear-resistant layer of mud pump valve body and valve seat
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CN113186505A (en) * 2021-04-17 2021-07-30 太原理工大学 Method for preparing WC coating on surface of gamma-TiAl alloy
CN115074661A (en) * 2022-08-22 2022-09-20 天津恒博锐技术开发有限公司 Preparation method of high-temperature wear-resistant composite steel rolling roll collar
CN116254496A (en) * 2022-09-09 2023-06-13 北京金轮坤天特种机械有限公司 Preparation method of thermal barrier coating
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
CN117699350A (en) * 2024-02-06 2024-03-15 常州市锋杰机械有限公司 Composite ceramic spraying rotary valve

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CN109161856A (en) * 2018-08-20 2019-01-08 江苏神通阀门股份有限公司 It is a kind of with nano ceramics-metal composite coating stiff dough ball valve and manufacturing method
CN110923605B (en) * 2018-08-31 2022-01-28 中国科学院宁波材料技术与工程研究所 Wear-resistant protective composite coating, and preparation method and application thereof
CN110923605A (en) * 2018-08-31 2020-03-27 中国科学院宁波材料技术与工程研究所 Wear-resistant protective composite coating, and preparation method and application thereof
CN109023202A (en) * 2018-09-13 2018-12-18 兰州理工大学 The structure and preparation method thereof of the compound painting-film plating layer of flame-spraying+PVD plated film
CN110343993A (en) * 2019-08-07 2019-10-18 广东工业大学 A kind of carbide surface processing method and application
CN111791032A (en) * 2020-07-24 2020-10-20 河南华中科翔石油机械有限公司 Melt-blown processing technology for wear-resistant layer of mud pump valve body and valve seat
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CN112877637A (en) * 2021-01-12 2021-06-01 兰州理工大学 Heat-corrosion-resistant composite protective coating and preparation method thereof
CN112877637B (en) * 2021-01-12 2022-02-08 兰州理工大学 Heat-corrosion-resistant composite protective coating and preparation method thereof
CN113186505A (en) * 2021-04-17 2021-07-30 太原理工大学 Method for preparing WC coating on surface of gamma-TiAl alloy
CN115074661A (en) * 2022-08-22 2022-09-20 天津恒博锐技术开发有限公司 Preparation method of high-temperature wear-resistant composite steel rolling roll collar
CN116254496A (en) * 2022-09-09 2023-06-13 北京金轮坤天特种机械有限公司 Preparation method of thermal barrier coating
CN116254496B (en) * 2022-09-09 2023-12-15 北京金轮坤天特种机械有限公司 Preparation method of thermal barrier coating
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
CN117699350A (en) * 2024-02-06 2024-03-15 常州市锋杰机械有限公司 Composite ceramic spraying rotary valve
CN117699350B (en) * 2024-02-06 2024-04-09 常州市锋杰机械有限公司 Composite ceramic spraying rotary valve

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Application publication date: 20180608