CN109628927A - A kind of wear-resistant corrosion-resistant nickel-base silicon carbide compound coating and preparation method thereof for marine worker liquid presses piston pole - Google Patents
A kind of wear-resistant corrosion-resistant nickel-base silicon carbide compound coating and preparation method thereof for marine worker liquid presses piston pole Download PDFInfo
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- CN109628927A CN109628927A CN201910106080.1A CN201910106080A CN109628927A CN 109628927 A CN109628927 A CN 109628927A CN 201910106080 A CN201910106080 A CN 201910106080A CN 109628927 A CN109628927 A CN 109628927A
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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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
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- Chemical Kinetics & Catalysis (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Laser Beam Processing (AREA)
- Powder Metallurgy (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The wear-resistant corrosion-resistant nickel-base silicon carbide compound coating and preparation method thereof that the invention discloses a kind of for marine worker liquid presses piston pole, the composition and mass fraction of the coating are as follows: Co-based alloy powder 60~90%, Neon SiC powder 5~25%, metal tantalum powder 1~10%, graphene powder 1~5%；Preparation method is as follows: using the formula as laser cladding of material, power formulations are sent to by pretreated piston rod steel substrate surface by automatic powder feeding device, and make powder melting in piston rod surface by laser emission simultaneously, ultimately form the coating with a thickness of 0.5~2.0mm, the coating is uniform and compact for this, low in metallurgical bonding, dilution rate with substrate, with excellent corrosion resistance, wear resistence and the anti-performance of flushing of water containing the sea of sand, it is remarkably improved the service life of marine worker liquid presses piston pole.
Description
Technical field
The invention belongs to ocean engineering and the anti-corrosion protection fields of coastal hydraulic engineering liquid presses piston pole abrasion-resistant surface, specifically relate to
And a kind of wear-resistant corrosion-resistant nickel-base silicon carbide compound coating and preparation method thereof for marine worker liquid presses piston pole.
Background technique
Piston rod is one of ocean engineering and the key core component of coastal hydraulic engineering gate hydraulic headstock gear, due to work
Stopper rod is exposed to corrosivity seawater, humid atmosphere, sunshine for a long time and the adverse circumstances such as is exposed to the sun and is substantial, in addition rough swell
The swiftly flowing seawater in tidal zone and its grit stone swept along generate strong erosive wear to piston rod surface, lead to piston rod table
Chemical attack and physical abrasion easily occur for face, thus hydraulic system seal failure so that oil leak and be not available, and then influence
Gate normally opens and closes.Therefore piston rod usually requires to carry out surfacecti proteon to improve its corrosion resistance and wearability.Currently, piston rod
Surface protection technique majority is electrodeposited chromium or electronickelling, wherein based on chromium plating.However Cr VI and that there are serious environment is dirty
Dye and health hazard, plating chromium process is in the world and China has also gradually been forbidden to use and will finally eliminate.Therefore, substitution electricity
Chromium plating technology becomes research hotspot in recent years, mainly there is flame-spraying, plasma spraying, argon arc or plasma surfacing etc. at present,
But flame-spraying and the defects of plasma-coated generally existing porosity is high, bond strength is low and coating crack, Yi Fasheng spot corrosion,
It is bubbled, coating shedding；Then there is the problems such as dilution rate is high, tissue defects are serious and fatigue strength is insufficient in overlay cladding.
Laser melting coating is a kind of advanced, green sufacing, is expected to one of the new technology as replacing electroplating chromium.Mesh
Before, common coating material mainly has Fe base, Ni base and Co base cladding layer, and wherein Ni base carbide composite coating has both good
Intensity and toughness earn widespread respect because of its good corrosion resistance and wear resistance.However, laser cladding Ni base is carbonized
Object composite coating is less to be applied to marine engineering equipment component, and it is larger to be primarily due to traditional carbide particle such as WC, Cr3C2
And it is poor with the wetability of Binder Phase, high brittleness is easy to produce during deposition causes coating to crack, and affects workpiece
Corrosion resistance in marine environment.In addition, the carbide price such as tungsten carbide (WC), chromium carbide (Cr3C2) is higher, further limit
Its promotion and application.
Summary of the invention
For deficiency existing for existing laser fusion covered nickel base carbide coating technology, the present invention, which provides one kind, can be used for sea
Wear-resistant corrosion-resistant nickel-base silicon carbide compound coating of the marine worker liquid presses piston pole of foreign environment and preparation method thereof.
The technical solution adopted by the invention is as follows:
The Ni-based silicon carbide compound coating of marine worker liquid presses piston pole for marine environment, its component and its mass fraction
It is as follows:
Ni base alloy powder 60~90%, Neon SiC powder 5~25%, metal tantalum powder 1~10%, graphene 1
~5%, the sum of all components are 100%.
The chemical component of the Ni base alloy powder is by mass percentage, C0.5-0.8%, Si4.0-4.5%,
Cr11.5-13.5%, Fe3.0-3.5%, it is other be Ni.
And the granularity of Ni base alloy powder is preferably 150~300 μm.
Wherein the purity of SiC usually answers >=99.9% in Neon SiC powder.
The purity of Ta usually answers >=99.9% in metal tantalum powder.
The purity of graphene usually answers >=99% in graphene powder.
The present invention also provides the preparation method of the wear-resistant corrosion-resistant nickel-base silicon carbide compound coating for marine worker liquid presses piston pole,
The following steps are included:
Step 1: alloy powder formula preparation
1) each component is taken by said ratio, and is mixed 12~15 hours in ball mill and obtains uniform composite powder；
2) composite powder for obtaining step 1) is put in a drying box, 100~150 DEG C, spare after dry 3~5h；
Step 2: piston rod surface pretreatment
1) piston rod is clamped on horizontal revolving table, oil removing, decontamination, derusting is carried out to piston rod surface, and with alcohol or
Acetone cleans up；
2) piston rod is heated to 100~120 DEG C with induction heater；
Step 3: laser melting coating prepares Ni-based wear-resistant anti-corrosion coating
1) turn line sending speed is set as 10mm/s；
2) composite powder is packed into automatic powder feeding device, is sent powder to the piston of step 2 with 99.99% high pure nitrogen
Bar surface.Simultaneously the powder of piston rod surface is melted to form molten bath using coaxial laser equipment, obtains thickness after cooled and solidified
For the cladding alloy-layer of the even compact of 0.5~2.0mm；
Step 4: machining piston rod size and roughness
Conventional mechanical processing is carried out to the piston rod surface coating after laser melting coating, reaches its surface size and roughness
Specific requirement.
The parameter of laser melting and coating process is as follows in the step 3: spot diameter 3-6mm, overlapping rate 40-60%, laser
Power is 1.8~3.5kW, and melting head scanning speed is 8-25mm/s, and powder feeding rate is 10~80g/min.
Nickel-base alloy itself has excellent corrosion resistance in inventive formulation, and effectively marine environment can be inhibited to piston rod
Corrosiveness.Nanometer silicon carbide reduces coating because its small-size effect mutually has good wetability with nickel based binder
Crack sensitivity.For silicon carbide in addition to the second phase humidification of itself, partially carbonized silicon decomposes a variety of carbide generated can be right
Nickel-base alloy plays the role of solution strengthening.Metal tantalum is able to suppress growing up for primary carbides such as coarse Cr7C3 in coating, drops
The brittle property of low coating and crack sensitivity.Tantalum can generate the tiny of high rigidity with the high activity graphene reaction in-situ in formula
Play the role of solution strengthening in TaC, disperse and Ni-based phase and improves the wear-resistant grain cutting ability of coating.Coating obtained by the invention is equal
It is even densification flawless, low in metallurgical bonding, dilution rate with substrate, there is excellent corrosion resistance, wear resistence and anti-water containing the sea of sand to rush
Brush performance.
The invention has the following advantages that
(1) alloy powder formula proposed by the present invention contains excellent hard of excellent corrosion resistance nickel-base alloy ingredient, wear resistence
Matter ceramic composition, the ingredient for improving coating texture and toughness make coating have excellent corrosion resistance, wear resistence concurrently and resist containing sand
Seawater scouring performance, deep-etching and strong erosive wear environment suitable for marine environment.
(2) present invention uses laser melting and coating process, and cladding layer and piston rod substrate are in complete metallurgical bonding, and coating is fine and close
It is even, overcome electroplated layer, the defects of crackle of hot-spraying coating or hole are more, with substrate poor bonding strength.
(3) laser melting coating heating speed is fast, and matrix heat affected area is small, and cladding layer dilution rate is low (general < 5%).Compared to etc.
The conventional metallurgicals combination coating such as ion built-up welding, laser cladding layer dilution rate is low, and crystallite size is thin, and corrosion resistance and wear-resisting property are more
It is good.
Detailed description of the invention
Fig. 1 is the process flow chart of the wear-resistant anti-corrosion coating method of piston rod laser fusion covered nickel base.
Specific embodiment
Embodiment 1:
(1) coating formula ingredient and proportion
Each component is taken by mass fraction: Ni base alloy powder: 89%, Neon SiC powder: 8%, metal tantalum powder:
2%, graphene powder: 1%.And mixed 12~15 hours in ball mill, obtain uniform composite powder.Composite powder is set
It is spare after 100 DEG C of dry 5h in drying box.
(2) piston rod surface pre-processes
The piston rod that material is 2205 steel is clamped on horizontal revolving table, oil removing is carried out to piston rod surface, decontaminates, remove
Rust, and cleaned up with alcohol or acetone；Piston rod is heated to 100 DEG C with induction heater.
(3) laser melting coating prepares Ni-based wear-resistant anti-corrosion coating
Setting turn line sending speed is 10mm/s.Composite powder is packed into automatic powder feeding device, with 99.99% high pure nitrogen
Powder is sent to piston rod surface.Simultaneously the powder of piston rod surface is melted to form molten bath using coaxial laser equipment, it is cooling
The fine and close cladding alloy-layer with a thickness of 1.5mm is obtained after solidification；
Laser cladding technological parameter is as follows: spot diameter 5mm, overlapping rate 50%, and laser power 2.4kw, molten head is swept
Retouching speed is 10mm/s, powder feeding rate 25g/min.
(4) piston rod size and roughness are machined
Conventional mechanical processing is carried out to the coating after laser melting coating, roughness is made to be less than 0.25 μm of Ra.
The wear-resistant corrosion-resistant nickel-base silicon carbide compound coating uniform flawless, with a thickness of 1.5mm.The microhardness of coating
For 795HV0.2, roughness is 0.21 μm of Ra.It is only that matrix stainless steel is weightless in the weight loss that washes away of suspension current seawater floating coat
The 35% of amount.With cladding layer piston rod test specimen by 1500h salt spray test, phenomena such as coating bubble-free, corrosion.
Embodiment 2:
(1) coating formula ingredient and proportion
Each component is taken by mass fraction: Ni base alloy powder: 76%, nanometer silicon carbide: 15%, metal Ta powder: 6%,
Graphene powder: 3%.And mixed 12~15 hours in ball mill, obtain uniform composite powder.Composite powder is placed in dry
It is spare after 120 DEG C of dry 4h in dry case.
(2) piston rod surface pre-processes
The piston rod that material is Q355 steel (i.e. original Q345) is clamped on horizontal revolving table, piston rod surface is removed
Oil, decontamination, derusting, and cleaned up with alcohol or acetone；Piston rod is heated to 100 DEG C with induction heater.
(3) laser melting coating prepares Ni-based wear-resistant anti-corrosion coating
Setting turn line sending speed is 10mm/s.Composite powder is packed into automatic powder feeding device, with 99.99% high pure nitrogen
Powder is sent to piston rod surface.Simultaneously the powder of piston rod surface is melted to form molten bath using coaxial laser equipment, it is cooling
The fine and close cladding alloy-layer with a thickness of 1.1mm is obtained after solidification；
Laser cladding technological parameter is as follows: spot diameter 5mm, overlapping rate 45%, laser power 2kW, melts head scanning
Speed is 15mm/s, powder feeding rate 20g/min.
(4) piston rod size and roughness are machined
Conventional mechanical processing is carried out to the coating after laser melting coating, roughness is made to be less than 0.25 μm of Ra.
The wear-resistant corrosion-resistant nickel-base silicon carbide compound coating uniform flawless, with a thickness of 1.1mm.The microhardness of coating
For 842HV0.2, roughness is 0.24 μm of Ra.It is only that matrix stainless steel is weightless in the weight loss that washes away of suspension current seawater floating coat
The 28% of amount.The test specimen of piston rod containing cladding layer is by 1500h salt spray test, phenomena such as coating bubble-free, corrosion.
Embodiment 3:
(1) coating formula ingredient and proportion
Each component is taken by mass fraction: Ni base alloy powder: 65%, nanometer silicon carbide: 20%, metal Ta powder: 10%,
Graphene powder: 5%.And mixed 12~15 hours in ball mill, obtain uniform composite powder.Composite powder is placed in dry
It is spare after 150 DEG C of dry 3h in dry case.
(2) piston rod surface pre-processes
By material be Q355 steel (i.e. original Q345) piston rod clamp on horizontal revolving table, to piston rod surface progress oil removing,
Decontamination, derusting, and cleaned up with alcohol or acetone；Piston rod is heated to 100 DEG C with induction heater.
(3) laser melting coating prepares Ni-based wear-resistant anti-corrosion coating
Setting turn line sending speed is 10mm/s.Composite powder is packed into automatic powder feeding device, with 99.99% high pure nitrogen
Powder is sent to piston rod surface.Simultaneously the powder of piston rod surface is melted to form molten bath using coaxial laser equipment, it is cooling
The cladding alloy-layer of the even compact with a thickness of 0.5mm is obtained after solidification；
Laser cladding technological parameter is as follows: spot diameter 5mm, overlapping rate 50%, and laser power 1.8kW, molten head is swept
Retouching speed is 20mm/s, powder feeding rate 20g/min.
(4) piston rod size and roughness are machined
Conventional mechanical processing is carried out to the coating after laser melting coating, roughness is made to be less than 0.25 μm of Ra.
The wear-resistant corrosion-resistant nickel-base silicon carbide compound coating uniform flawless, with a thickness of 0.8mm.The microhardness of coating
For 967HV0.2, roughness is 0.23 μm of Ra.It is only that matrix stainless steel is weightless in the weight loss that washes away of suspension current seawater floating coat
The 24% of amount.Piston rod test specimen is by 1500h salt spray test layer by layer for cladding, phenomena such as coating bubble-free, corrosion.
Embodiment 4:
(1) coating formula ingredient and proportion
Each component is taken by mass fraction: Ni base alloy powder: 80%, nanometer silicon carbide: 20%.And it is mixed in ball mill
12~15 hours, obtain uniform composite powder.Composite powder is put in a drying box, it is spare after 150 DEG C of dry 3h.
(2) piston rod surface pre-processes
By material be Q355 steel (i.e. original Q345) piston rod clamp on horizontal revolving table, to piston rod surface progress oil removing,
Decontamination, derusting, and cleaned up with alcohol or acetone；Piston rod is heated to 100 DEG C with induction heater.
(3) laser melting coating prepares Ni-based wear-resistant anti-corrosion coating
Setting turn line sending speed is 10mm/s.Composite powder is packed into automatic powder feeding device, with 99.99% high pure nitrogen
Powder is sent to piston rod surface.Simultaneously the powder of piston rod surface is melted to form molten bath using coaxial laser equipment, it is cooling
The cladding alloy-layer with a thickness of 0.45mm is obtained after solidification；It was found that coating has crackle.
Laser cladding technological parameter is as follows: spot diameter 5mm, overlapping rate 50%, and laser power 1.8kW, molten head is swept
Retouching speed is 20mm/s, powder feeding rate 20g/min.
(4) piston rod size and roughness are machined
Conventional mechanical processing is carried out to the coating after laser melting coating, roughness is made to be less than 0.25 μm of Ra.Work in-process discovery
A small amount of disbonding；
Microhardness 915HV0.2, microhardness impression also has crackle.Salt spray test poor effect is passed through since coating exists
Matrix corrosion occurs for through cracks line, occurs than more serious rusty stain.
Claims (8)
1. a kind of wear-resistant corrosion-resistant nickel-base silicon carbide compound coating for marine worker liquid presses piston pole, which is characterized in that the coating is matched
It is square to be according to mass percent, Ni base alloy powder 60~90%, Neon SiC powder 5~25%, metal tantalum powder 1~
10%, graphene 1~5%.
2. a kind of wear-resistant corrosion-resistant nickel-base silicon carbide compound coating for marine worker liquid presses piston pole, which is characterized in that the Ni
The chemical component of base alloy powder is by mass percentage, C0.5-0.8%, Si4.0-4.5%, Cr11.5-13.5%,
Fe3.0-3.5%, it is other be Ni.
3. a kind of wear-resistant corrosion-resistant nickel-base silicon carbide compound coating for marine worker liquid presses piston pole according to claim 1,
It is characterized in that, the granularity of Ni base alloy powder is 150~300 μm.
4. a kind of wear-resistant corrosion-resistant nickel-base silicon carbide compound coating for marine worker liquid presses piston pole according to claim 1,
It is characterized in that, in Neon SiC powder SiC purity >=99.9%.
5. a kind of wear-resistant corrosion-resistant nickel-base silicon carbide compound coating for marine worker liquid presses piston pole according to claim 1,
It is characterized in that, in metal tantalum powder Ta purity >=99.9%.
6. a kind of wear-resistant corrosion-resistant nickel-base silicon carbide compound coating for marine worker liquid presses piston pole according to claim 1,
It is characterized in that, in graphene powder graphene purity >=99%.
7. the preparation wear-resistant corrosion-resistant nickel-base silicon carbide for marine worker liquid presses piston pole as claimed in any one of claims 1 to 6 is multiple
Close coating, which comprises the following steps:
Step 1: alloy powder formula preparation
1) each component is taken according to the ratio, and is mixed 12~15 hours in ball mill and obtained uniform composite powder；
2) composite powder for obtaining step 1) is put in a drying box, 100~150 DEG C, spare after dry 3~5h；
Step 2: piston rod surface pretreatment
1) piston rod is clamped on horizontal revolving table, oil removing, decontamination, derusting is carried out to piston rod surface, and with alcohol or acetone
It cleans up；
2) piston rod is heated to 100~120 DEG C with induction heater；
Step 3: laser melting coating prepares Ni-based wear-resistant anti-corrosion coating
1) turn line sending speed is set as 10mm/s；
2) composite powder is packed into automatic powder feeding device, powder send to that treated is living to step 2 with 99.99% high pure nitrogen
Stopper rod surface, while melting the powder of piston rod surface to form molten bath using coaxial laser equipment, it is obtained after cooled and solidified thick
Degree is the cladding alloy-layer of the even compact of 0.5~2.0mm；
Step 4: machining piston rod size and roughness
Conventional mechanical processing is carried out to the piston rod surface coating after laser melting coating, its surface size and roughness is made to reach design
It is required that.
8. the preparation of the wear-resistant corrosion-resistant nickel-base silicon carbide compound coating according to claim 7 for marine worker liquid presses piston pole
Method, which is characterized in that the parameter of laser melting and coating process is as follows in the step 3: spot diameter 3-6mm, overlapping rate 40-
60%, laser power is 1.8~3.5kW, and melting head scanning speed is 8-25mm/s, and powder feeding rate is 10~80g/min.
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