CN109371392A - A kind of Ni-based wear-resistant anti-corrosion coating formula for marine worker liquid presses piston pole, coating and preparation method thereof - Google Patents
A kind of Ni-based wear-resistant anti-corrosion coating formula for marine worker liquid presses piston pole, coating and preparation method thereof Download PDFInfo
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- CN109371392A CN109371392A CN201811240165.0A CN201811240165A CN109371392A CN 109371392 A CN109371392 A CN 109371392A CN 201811240165 A CN201811240165 A CN 201811240165A CN 109371392 A CN109371392 A CN 109371392A
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- coating
- piston rod
- resistant anti
- powder
- based wear
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Classifications
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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
-
- 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
Abstract
The Ni-based wear-resistant anti-corrosion coating formula that the invention discloses a kind of for marine worker liquid presses piston pole, coating and preparation method thereof.By quality ratio, which becomes NiCrBSi alloy: 85~95%, metal Ta powder: 1~15%, CeO2RE oxide powder: 0.2~3%.Using the formula as laser cladding of material, by automatic powder feeding device, successively power formulations are sent to pre- treated piston rod steel substrate surface, 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 impact flexibility, it is remarkably improved the service life of marine worker liquid presses piston pole.
Description
Technical field
The present invention relates to a kind of Ni-based wear-resistant anti-corrosion coating formula, coating and its preparation sides for marine worker liquid presses piston pole
Method, the coating are applied to ocean engineering and the anti-corrosion protection field of coastal hydraulic engineering liquid presses piston pole abrasion-resistant surface.
Background technique
Piston rod is one of ocean engineering and the key core component of coastal hydraulic engineering gate hydraulic headstock gear, substrate
Predominantly carbon steel, steel alloy or quenched and tempered steel are on a small quantity stainless steel.Since piston rod is exposed to corrosivity seawater, humidity for a long time
Atmosphere, sunshine the adverse circumstances such as is exposed to the sun and is substantial, and in addition the swiftly flowing seawater in tidal bore zone and its sweeps along
Grit stone generates strong erosive wear to piston rod surface, causes piston rod surface that chemical attack and physical abrasion easily occurs,
So that hydraulic system seal failure so that oil leak and be not available, and then influence gate normally open and close.Therefore piston rod is usual
Need to carry out surfacecti proteon to improve its corrosion resistance and wearability.
Currently, piston rod surface guard technology majority is electrodeposited chromium or electronickelling, wherein based on chromium plating.However Cr VI
And there are serious environmental pollution and health hazard, chromium process is electroplated in the world and China has also gradually been forbidden to use and will most
It eliminates eventually.Therefore, replacing electroplating chromium technology becomes research hotspot in recent years, mainly there is flame-spraying, plasma spraying, argon at present
Arc or plasma surfacing etc., but flame-spraying and plasma-coated generally existing porosity is high, bond strength is low and coating crack
The defects of, easily generation spot corrosion, bubbling, coating shedding；Overlay cladding then have that dilution rate is high, tissue defects are serious and fatigue strength not
The problems such as sufficient.Laser melting coating is a kind of advanced, green sufacing, is expected to one of the new technology as replacing electroplating chromium.
Summary of the invention
Existing marine worker piston rod corrosion and wear protection coating technology there are aiming at the problem that, the present invention provides a kind of use
In the Ni-based wear-resistant anti-corrosion coating formula of marine worker liquid presses piston pole, coating and preparation method thereof.Coating uniform obtained by the invention causes
It is close, low in metallurgical bonding, dilution rate with substrate, there is excellent corrosion resistance, wear resistence and impact flexibility.
Technical solution of the present invention is as follows:
A kind of Ni-based wear-resistant anti-corrosion coating formula for marine worker liquid presses piston pole, component are as follows:
Ingredient A: the NiCrBSi alloy powder that granularity is 45~125 μm；Ingredient B: purity is rare earth modified not less than 99%
Agent nano-cerium oxide, granularity are 40~90nm；Ingredient C: purity be not less than 99.99% micro-nano ta powder, granularity be 80~
200nm；And by percentage to the quality, ingredient A is 85~95%, ingredient B is 0.2~3%, ingredient C is 1~15%.
In above-mentioned technical proposal, the NiCrBSi alloy powder are as follows: its chemical component is as follows by mass percentage: C
0.45%, B 2.3%, Si 3.9%, Cr 11.0%, Fe 2.9%, Ni surplus.
Further, quality >=5:1 of the ingredient C and ingredient B.
A kind of Ni-based wear-resistant anti-corrosion coating for marine worker liquid presses piston pole, using above-mentioned formula as raw material, using laser
Melting and coating process is prepared in piston rod workpiece surface.Specifically includes the following steps:
Step 1: coating formula is mixed according to the ratio, is mixed 20~72 hours in ball mill and is obtained uniform composite powder
End；It puts in a drying box, 100~150 DEG C, after dry 1~3h；
Step 2: piston rod surface pretreatment
Piston rod is clamped on horizontal revolving table, oil removing, decontamination, derusting are carried out to piston rod surface, and with alcohol or third
Ketone cleans up；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, the high pure nitrogen with purity not less than 99.99% send powder to step
Rapid two piston rod surface, while melting the powder of piston rod surface to form molten bath using coaxial laser equipment, cooled and solidified
The Ni-based wear-resistant anti-corrosion coating of even compact is obtained afterwards.
The Ni-based wear-resistant anti-corrosion coating is with a thickness of 0.5~2.0mm.
The parameter of laser melting and coating process is as follows in the step three: spot diameter 5mm, overlapping rate 50%, laser function
Rate is 1~4kw, and melting head scanning speed is 20mm/s, and powder feeding rate is 20~100g/min.
Conventional mechanical processing can be carried out to the piston rod surface coating after laser melting coating, make its surface size and roughness
Reach specific requirement.
The present invention has the following advantages that and feature:
(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 and impact concurrently tough
Property, 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.
Specific embodiment
Embodiment 1
(1) coating formula ingredient and proportion
By granularity be 45~125 μm NiCrBSi alloy powder (its chemical component by mass percentage: C0.45%,
B2.3%, Si3.9%, Cr11.0%, Fe2.9%, Ni surplus), nano-cerium oxide rare-earth modifier (CeO2, purity >=99%,
Granularity is mixed for 40~90nm) and micro-nano ta powder (Ta, purity >=99.99%, granularity are 80~200nm).Its matter
It is as follows to measure percentage: NiCrBSi alloy: 88%, micro-nano metal Ta powder: 10%, CeO2Nano RE oxide powder: 2%.
And mixed 45 hours in ball mill, obtain uniform composite powder.Composite powder is put in a drying box, 100 DEG C of dry 2h
It is spare afterwards.
(2) piston rod surface pre-processes
The piston rod that material is 45 steel is clamped on horizontal revolving table, oil removing, decontamination, derusting are carried out to piston rod surface,
And it is 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
Laser cladding technological parameter is as follows: spot diameter 5mm, overlapping rate 50%, and laser power 3.5kw, molten head is swept
Retouching speed is 20mm/s, powder feeding rate 150g/min.
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 that thickness is about 1.2mm is obtained after solidification；Coating is metallurgical bonding, is well combined, corrosion potential be-
302mV, coating hardness 577HV0.2
(4) piston rod size and roughness are machined
Conventional mechanical processing is carried out to the piston rod surface coating after laser melting coating, roughness is made to reach Ra0.1 μm.
Embodiment 2
(1) coating formula ingredient and proportion
By granularity be 45~125 μm NiCrBSi alloy powder (its chemical component by mass percentage: C0.45%,
B2.3%, Si3.9%, Cr11.0%, Fe2.9%, Ni surplus), nano-cerium oxide rare-earth modifier (CeO2, purity >=99%)
It is mixed with micro-nano ta powder (Ta, purity >=99.99%).Its mass percent is as follows: NiCrBSi alloy: 94%, micro-
Receive metal Ta powder: 5%, CeO2Nano RE oxide powder: 1%.And mixed 30 hours in ball mill, it obtains uniform
Composite powder.Composite powder is put in a drying box, it is spare after 120 DEG C of dry 1h.
(2) piston rod surface pre-processes
The piston rod that material is Q345 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
Laser cladding technological parameter is as follows: spot diameter 5mm, overlapping rate 50%, laser power 3kw, melts head scanning
Speed is 20mm/s, powder feeding rate 100g/min.
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 that thickness is about 0.8mm is obtained after solidification；Coating is metallurgical bonding, is well combined, corrosion potential be-
323mV, coating hardness 611HV0.2
(4) piston rod size and roughness are machined
Conventional mechanical processing is carried out to the piston rod surface coating after laser melting coating, roughness is made to reach 0.1 μm of Ra.
Embodiment 3
(1) coating formula ingredient and proportion
By granularity be 45~125 μm NiCrBSi alloy powder (its chemical component by mass percentage: C0.45%,
B2.3%, Si3.9%, Cr11.0%, Fe2.9%, Ni surplus), nano-cerium oxide rare-earth modifier (CeO2, purity >=99%)
It is mixed with micro-nano ta powder (Ta, purity >=99.99%).Its mass percent is as follows: NiCrBSi alloy: 85.2%,
Micro-nano metal Ta powder: 6%, CeO2Nano RE oxide powder: 0.8%.And mixed 55 hours in ball mill, it obtains equal
Even composite powder.Composite powder is put in a drying box, it is spare after 150 DEG C of dry 2.5h.
(2) piston rod surface pre-processes
By material be 2205 stainless steels piston rod clamp on horizontal revolving table, to piston rod surface carry out 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
Laser cladding technological parameter is as follows: spot diameter 5mm, overlapping rate 50%, and laser power 2.5kw, molten head is swept
Retouching speed is 20mm/s, powder feeding rate 50g/min.
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 that thickness is about 0.5mm is obtained after solidification；Coating is metallurgical bonding, is well combined, corrosion potential be-
335mV, coating hardness 662HV0.2
(4) piston rod size and roughness are machined
Conventional mechanical processing is carried out to the piston rod surface coating after laser melting coating, roughness is made to reach 0.1 μm of Ra.
Claims (7)
1. a kind of Ni-based wear-resistant anti-corrosion coating formula for marine worker liquid presses piston pole, which is characterized in that its component is as follows:
Ingredient A: the NiCrBSi alloy powder that granularity is 45~125 μm；Ingredient B: rare-earth modifier of the purity not less than 99% is received
Rice cerium oxide, granularity are 40~90nm；Ingredient C: purity be not less than 99.99% micro-nano ta powder, granularity be 80~
200nm；And by percentage to the quality, ingredient A is 85~95%, ingredient B is 0.2~3%, ingredient C is 1~15%.
2. the Ni-based wear-resistant anti-corrosion coating formula according to claim 1 for marine worker liquid presses piston pole, which is characterized in that
The NiCrBSi alloy powder are as follows: its chemical component is as follows by mass percentage: C 0.45%, B 2.3%, Si
3.9%, Cr 11.0%, Fe 2.9%, Ni surplus.
3. the Ni-based wear-resistant anti-corrosion coating formula according to claim 1 for marine worker liquid presses piston pole, which is characterized in that
Mass ratio >=5:1 of the ingredient C and ingredient B.
4. a kind of Ni-based wear-resistant anti-corrosion coating for marine worker liquid presses piston pole, which is characterized in that with any one of claim 1-3
The formula is raw material, is prepared using laser melting and coating process in piston rod workpiece surface.
5. the method that preparation is used for the Ni-based wear-resistant anti-corrosion coating of marine worker liquid presses piston pole as claimed in claim 4, feature
It is, comprising the following steps:
Step 1: coating formula is mixed according to the ratio, is mixed 20~72 hours in ball mill and is obtained uniform composite powder；It sets
In in drying box, 100~150 DEG C, after dry 1~3h；
Step 2: piston rod surface pretreatment
Piston rod is clamped on horizontal revolving table, oil removing, decontamination, derusting are carried out to piston rod surface, and clear with alcohol or acetone
Wash clean；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, the high pure nitrogen with purity not less than 99.99% send powder to step 2
Piston rod surface, while the powder of piston rod surface being melted to form molten bath using coaxial laser equipment, be obtained after cooled and solidified
Obtain the Ni-based wear-resistant anti-corrosion coating of even compact.
6. the preparation method of the Ni-based wear-resistant anti-corrosion coating according to claim 5 for marine worker liquid presses piston pole, special
Sign is that the Ni-based wear-resistant anti-corrosion coating is with a thickness of 0.5~2.0mm.
7. the preparation method of the Ni-based wear-resistant anti-corrosion coating according to claim 5 for marine worker liquid presses piston pole, special
Sign is that the parameter of laser melting and coating process is as follows in the step three: spot diameter 5mm, overlapping rate 50%, laser power
For 1~4kw, melting head scanning speed is 20mm/s, and powder feeding rate is 20~100g/min.
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| CN201811240165.0A CN109371392B (en) | 2018-10-23 | 2018-10-23 | Nickel-based wear-resistant corrosion-resistant coating composition for marine hydraulic piston rod, coating and preparation method of coating |
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| CN201811240165.0A CN109371392B (en) | 2018-10-23 | 2018-10-23 | Nickel-based wear-resistant corrosion-resistant coating composition for marine hydraulic piston rod, coating and preparation method of coating |
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| CN109371392A true CN109371392A (en) | 2019-02-22 |
| CN109371392B CN109371392B (en) | 2020-10-16 |
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