CN109136815A - A kind of plasma surface melting and coating process - Google Patents
A kind of plasma surface melting and coating process Download PDFInfo
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- CN109136815A CN109136815A CN201810810687.3A CN201810810687A CN109136815A CN 109136815 A CN109136815 A CN 109136815A CN 201810810687 A CN201810810687 A CN 201810810687A CN 109136815 A CN109136815 A CN 109136815A
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- 238000000576 coating method Methods 0.000 title claims abstract description 17
- 230000008018 melting Effects 0.000 title claims abstract description 17
- 238000010309 melting process Methods 0.000 title claims abstract description 17
- 238000005253 cladding Methods 0.000 claims abstract description 73
- 229910052751 metal Inorganic materials 0.000 claims abstract description 48
- 239000002184 metal Substances 0.000 claims abstract description 48
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000000843 powder Substances 0.000 claims abstract description 41
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005498 polishing Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 18
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010941 cobalt Substances 0.000 claims abstract description 16
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 16
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 16
- 239000010936 titanium Substances 0.000 claims abstract description 16
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 16
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- 239000000356 contaminant Substances 0.000 claims abstract description 6
- 239000013527 degreasing agent Substances 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims abstract description 6
- 239000004744 fabric Substances 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims description 20
- 238000010891 electric arc Methods 0.000 claims description 19
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical group [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- 241000234314 Zingiber Species 0.000 claims description 5
- 235000006886 Zingiber officinale Nutrition 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 235000008397 ginger Nutrition 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- 239000002105 nanoparticle Substances 0.000 claims description 5
- 238000006116 polymerization reaction Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000012797 qualification Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 10
- 238000000227 grinding Methods 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 230000003746 surface roughness Effects 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 238000005275 alloying Methods 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000376 reactant Substances 0.000 description 4
- 208000025599 Heat Stress disease Diseases 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
Classifications
-
- 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
- C23C4/131—Wire arc spraying
-
- 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
- C23C4/134—Plasma spraying
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a kind of plasma surface melting and coating process, the specific steps are as follows: step 1: the cladding part surface for needing cladding tentatively being cleaned, sanding and polishing is carried out to its surface using polishing machine, is carrying out drying dedusting to it；Step 2: the cladding part handled well in step 1 is cleaned using degreaser, so that its surface contaminants is removed, to spare after drying；Step 3: etch processing is carried out to step 2 treated cladding part surface by chemical microetch method, finely tunes its surface roughness；Step 4: cobalt, nickel, titanium, silicon carbide, tungsten carbide and aluminium oxide are ground using high energy ball mill respectively, and reducing agent is added during the grinding process, is collected after ground using cloth dust collector, nano level metal powder is obtained.The oxidation of sprayed on material is reduced, while can be with after-flame alloying element；Improve sprayed on material ion velocity；Its corrosion resistance promotes 65%, and compression strength promotes 180%, and impact flexibility promotes 1.5J/cm-2.
Description
Technical field
The invention belongs to plasma cladding technical fields, and in particular to a kind of plasma surface melting and coating process.
Background technique
Traditional melting and coating process is all more single to the use of material and cladding part pretreatment mode, and the binding force of cladding compared with
Difference, so that cladding layer is low with matrix adhesion, and compression strength and toughness are also insufficient, are not able to satisfy the use of high-temperature device, and
There is no good corrosion resistance, so that cannot be used for the precise parts such as aircraft engine is using limiting to its use scope
Property is larger.
Summary of the invention
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of plasma surface melting and coating process
Traditional melting and coating process is all more single to the use of material and cladding part pretreatment mode, and the binding force of cladding is poor, so that
Cladding layer is low with matrix adhesion, and compression strength and toughness are also insufficient, is not able to satisfy the use of high-temperature device, and without good
Corrosion resistance so that cannot be used for the precise parts such as aircraft engine is using keeping its use scope limitation biggish
Problem.
To achieve the above object, the invention provides the following technical scheme: a kind of plasma surface melting and coating process, specific steps
It is as follows:
Step 1: the cladding part surface for needing cladding is tentatively cleaned, and is polished using polishing machine its surface
Polishing, is carrying out it to dry dedusting.
Step 2: the cladding part handled well in step 1 is cleaned using degreaser, so that its surface contaminants is removed,
To spare after drying.
Step 3: etch processing is carried out to step 2 treated cladding part surface by chemical microetch method, finely tunes its table
Surface roughness.
Step 4: respectively being ground cobalt, nickel, titanium, silicon carbide, tungsten carbide and aluminium oxide using high energy ball mill, and
Reducing agent is added during the grinding process, is collected after ground using cloth dust collector, obtains nano level metal powder.
Step 5: the nano level metal powder that step 4 obtains is detected by nano particle analyzer, and is detected
The collection of qualified then ginger nano level metal powder is spare, and step 4 process regrinding is repeated if granularity is not met.
Step 6: step 5 is detected into qualified nano level metal powder and is sent into powder feeder, and powder feeder can be quantified to super
Acoustic-electric arc metal spraying equipment carries out powder feeding work, and the cladding part that step 3 is handled well is placed on cladding road, protects in argon gas
Meanwhile cladding work is carried out to cladding part using ultrasonic electric arc metal spraying equipment.
Step 7: the cladding part after step 6 cladding is cooled down, is polished after cooling using polishing machine it
Polishing has its surface smooth glossy.
Further, citric acid is added when grinding in the step 4, prevents metal powder polymerization from uniting, improves its dispersion
Property.
Further, in the step 6 combustion reactant ultrasonic electric arc metal spraying equipment spout row at existing
2200K condition downlink is more than the ultrasonic wave of 1500 meter per seconds at speed per hour.
Further, the reducing agent in the step 4 is magnesium, and cobalt, nickel, titanium, silicon carbide, tungsten carbide and aluminium oxide make
Parts by weight are as follows: cobalt 8-12 parts by weight, nickel 7-11 parts by weight, titanium 18-25 parts by weight, silicon carbide 13-17 parts by weight, tungsten carbide
18-23 parts by weight, aluminium oxide 7-12 parts by weight.
Further, the arc current of ultrasonic electric arc metal spraying equipment is 380A-390A in the step 6, and standard
58-63 cubes of specific air consumption/h under air pressure.
Further, in the step 6 cladding with a thickness of 0.5mm-7mm.
Compared with prior art, the beneficial effects of the present invention are: reducing the oxidation of sprayed on material, while can be with after-flame
Alloying element；Improve sprayed on material ion velocity；Welding groove temperature is no more than 10 degrees Celsius, and material use efficiency increases to
85%；The density of alloy coat and improves the hardness of cladding part close to the density of casting metal, increases its high temperature resistance, tough
Property and cold-heat fatigue property, and corrosion resistance with higher, corrosion resistance promote 65%, compression strength promotes 180%,
Impact flexibility promotes 1.5J/cm-2.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Embodiment 1
A kind of plasma surface melting and coating process, the specific steps are as follows:
Step 1: the cladding part surface for needing cladding is tentatively cleaned, and is polished using polishing machine its surface
Polishing, is carrying out it to dry dedusting.
Step 2: the cladding part handled well in step 1 is cleaned using degreaser, so that its surface contaminants is removed,
To spare after drying.
Step 3: etch processing is carried out to step 2 treated cladding part surface by chemical microetch method, finely tunes its table
Surface roughness.
Step 4: respectively being ground cobalt, nickel, titanium, silicon carbide, tungsten carbide and aluminium oxide using high energy ball mill, and
Reducing agent is added during the grinding process, is collected after ground using cloth dust collector, obtains nano level metal powder.
Step 5: the nano level metal powder that step 4 obtains is detected by nano particle analyzer, and is detected
The collection of qualified then ginger nano level metal powder is spare, and step 4 process regrinding is repeated if granularity is not met.
Step 6: step 5 is detected into qualified nano level metal powder and is sent into powder feeder, and powder feeder can be quantified to super
Acoustic-electric arc metal spraying equipment carries out powder feeding work, and the cladding part that step 3 is handled well is placed on cladding road, protects in argon gas
Meanwhile cladding work is carried out to cladding part using ultrasonic electric arc metal spraying equipment.
Step 7: the cladding part after step 6 cladding is cooled down, is polished after cooling using polishing machine it
Polishing has its surface smooth glossy.
Wherein, citric acid is added when grinding in the step 4, prevents metal powder polymerization from uniting, improves its dispersibility.
Wherein, in the step 6 combustion reactant ultrasonic electric arc metal spraying equipment spout row at that is, in 2200K
Condition downlink is more than the ultrasonic wave of 1500 meter per seconds at speed per hour.
Wherein, reducing agent in the step 4 is magnesium, and cobalt, nickel, titanium, silicon carbide, tungsten carbide and aluminium oxide use
Parts by weight are as follows: 8 parts by weight of cobalt, 7 parts by weight of nickel, 18 parts by weight of titanium, 13 parts by weight of silicon carbide, 18 parts by weight of tungsten carbide, aluminium oxide 7
Parts by weight.
Wherein, the arc current of ultrasonic electric arc metal spraying equipment is 380A in the step 6, and empty under standard pressure
58 cubes/h of gas consumption.
Wherein, in the step 6 cladding with a thickness of 0.5mm.
Embodiment 2
A kind of plasma surface melting and coating process, the specific steps are as follows:
Step 1: the cladding part surface for needing cladding is tentatively cleaned, and is polished using polishing machine its surface
Polishing, is carrying out it to dry dedusting.
Step 2: the cladding part handled well in step 1 is cleaned using degreaser, so that its surface contaminants is removed,
To spare after drying.
Step 3: etch processing is carried out to step 2 treated cladding part surface by chemical microetch method, finely tunes its table
Surface roughness.
Step 4: respectively being ground cobalt, nickel, titanium, silicon carbide, tungsten carbide and aluminium oxide using high energy ball mill, and
Reducing agent is added during the grinding process, is collected after ground using cloth dust collector, obtains nano level metal powder.
Step 5: the nano level metal powder that step 4 obtains is detected by nano particle analyzer, and is detected
The collection of qualified then ginger nano level metal powder is spare, and step 4 process regrinding is repeated if granularity is not met.
Step 6: step 5 is detected into qualified nano level metal powder and is sent into powder feeder, and powder feeder can be quantified to super
Acoustic-electric arc metal spraying equipment carries out powder feeding work, and the cladding part that step 3 is handled well is placed on cladding road, protects in argon gas
Meanwhile cladding work is carried out to cladding part using ultrasonic electric arc metal spraying equipment.
Step 7: the cladding part after step 6 cladding is cooled down, is polished after cooling using polishing machine it
Polishing has its surface smooth glossy.
Wherein, citric acid is added when grinding in the step 4, prevents metal powder polymerization from uniting, improves its dispersibility.
Wherein, in the step 6 combustion reactant ultrasonic electric arc metal spraying equipment spout row at that is, in 2200K
Condition downlink is more than the ultrasonic wave of 1500 meter per seconds at speed per hour.
Wherein, reducing agent in the step 4 is magnesium, and cobalt, nickel, titanium, silicon carbide, tungsten carbide and aluminium oxide use
Parts by weight are as follows: 10 parts by weight of cobalt, 9 parts by weight of nickel, 21.5 parts by weight of titanium, 15 parts by weight of silicon carbide, 20.5 parts by weight of tungsten carbide, oxygen
Change 9.5 parts by weight of aluminium.
Wherein, the arc current of ultrasonic electric arc metal spraying equipment is 385A in the step 6, and empty under standard pressure
60.5 cubes/h of gas consumption.
Wherein, in the step 6 cladding with a thickness of 3.75mm.
Embodiment 3
A kind of plasma surface melting and coating process, the specific steps are as follows:
Step 1: the cladding part surface for needing cladding is tentatively cleaned, and is polished using polishing machine its surface
Polishing, is carrying out it to dry dedusting.
Step 2: the cladding part handled well in step 1 is cleaned using degreaser, so that its surface contaminants is removed,
To spare after drying.
Step 3: etch processing is carried out to step 2 treated cladding part surface by chemical microetch method, finely tunes its table
Surface roughness.
Step 4: respectively being ground cobalt, nickel, titanium, silicon carbide, tungsten carbide and aluminium oxide using high energy ball mill, and
Reducing agent is added during the grinding process, is collected after ground using cloth dust collector, obtains nano level metal powder.
Step 5: the nano level metal powder that step 4 obtains is detected by nano particle analyzer, and is detected
The collection of qualified then ginger nano level metal powder is spare, and step 4 process regrinding is repeated if granularity is not met.
Step 6: step 5 is detected into qualified nano level metal powder and is sent into powder feeder, and powder feeder can be quantified to super
Acoustic-electric arc metal spraying equipment carries out powder feeding work, and the cladding part that step 3 is handled well is placed on cladding road, protects in argon gas
Meanwhile cladding work is carried out to cladding part using ultrasonic electric arc metal spraying equipment.
Step 7: the cladding part after step 6 cladding is cooled down, is polished after cooling using polishing machine it
Polishing has its surface smooth glossy.
Wherein, citric acid is added when grinding in the step 4, prevents metal powder polymerization from uniting, improves its dispersibility.
Wherein, in the step 6 combustion reactant ultrasonic electric arc metal spraying equipment spout row at that is, in 2200K
Condition downlink is more than the ultrasonic wave of 1500 meter per seconds at speed per hour.
Wherein, reducing agent in the step 4 is magnesium, and cobalt, nickel, titanium, silicon carbide, tungsten carbide and aluminium oxide use
Parts by weight are as follows: 12 parts by weight of cobalt, 11 parts by weight of nickel, 25 parts by weight of titanium, 17 parts by weight of silicon carbide, 23 parts by weight of tungsten carbide, oxidation
12 parts by weight of aluminium.
Wherein, the arc current of ultrasonic electric arc metal spraying equipment is 390A in the step 6, and empty under standard pressure
63 cubes/h of gas consumption.
Wherein, in the step 6 cladding with a thickness of 7mm.
The working principle of the invention and process for using: by pre-processing to cladding part surface, cladding layer is effectively increased
With the binding force between cladding part, the oxidation of sprayed on material is reduced, while can be with after-flame alloying element；Improve sprayed on material
Ion velocity；Welding groove temperature is no more than 10 degrees Celsius, and material use efficiency increases to 85%；The density of alloy coat is close
The density of casting metal, and the hardness of cladding part is improved, increase its high temperature resistance, toughness and cold-heat fatigue property, and have
Higher corrosion resistance, corrosion resistance promote 65%, and compression strength promotes 80%, and impact flexibility promotes 4.75J/cm-2.
Following table compares for the numerical value of no nanometer cladding and addition nano-oxide cladding.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of plasma surface melting and coating process, the specific steps are as follows:
Step 1: the cladding part surface for needing cladding is tentatively cleaned, and carries out sanding and polishing to its surface using polishing machine,
It is being carried out to dry dedusting.
Step 2: the cladding part handled well in step 1 is cleaned using degreaser, to remove its surface contaminants, is dried
Afterwards to spare.
Step 3: etch processing is carried out to step 2 treated cladding part surface by chemical microetch method, it is thick to finely tune its surface
Rugosity.
Step 4: cobalt, nickel, titanium, silicon carbide, tungsten carbide and aluminium oxide are ground using high energy ball mill respectively, and ground
Reducing agent is added during mill, is collected after ground using cloth dust collector, obtains nano level metal powder.
Step 5: the nano level metal powder that step 4 obtains is detected by nano particle analyzer, and detects qualification
Then ginger nano level metal powder is collected spare, and step 4 process regrinding is repeated if granularity is not met.
Step 6: step 5 is detected into qualified nano level metal powder and is sent into powder feeder, and powder feeder can be quantified to ultrasonic electric
Arc metal spraying equipment carries out powder feeding work, and the cladding part that step 3 is handled well is placed on cladding road, protects simultaneously in argon gas,
Cladding work is carried out to cladding part using ultrasonic electric arc metal spraying equipment.
Step 7: the cladding part after step 6 cladding is cooled down, and carries out sanding and polishing to it using polishing machine after cooling
Work has its surface smooth glossy.
2. a kind of plasma surface melting and coating process according to claim 1, it is characterised in that: when being ground in the step 4
Citric acid is added, prevents metal powder polymerization from uniting, improves its dispersibility.
3. a kind of plasma surface melting and coating process according to claim 1, it is characterised in that: burn in the step 6 anti-
Answer object in the spout row of ultrasonic electric arc metal spraying equipment at being more than the super of 1500 meter per seconds at speed per hour in 2200K condition downlink
Sound wave.
4. a kind of plasma surface melting and coating process according to claim 1, it is characterised in that: the reduction in the step 4
Agent is magnesium, and the parts by weight that cobalt, nickel, titanium, silicon carbide, tungsten carbide and aluminium oxide use are as follows: cobalt 8-12 parts by weight, nickel 7-11 weight
Part, titanium 18-25 parts by weight, silicon carbide 13-17 parts by weight, tungsten carbide 18-23 parts by weight, aluminium oxide 7-12 parts by weight.
5. a kind of plasma surface melting and coating process according to claim 1, it is characterised in that: ultrasonic electric in the step 6
The arc current of arc metal spraying equipment is 380A-390A, and 58-63 cubes of specific air consumption/h under standard pressure.
6. a kind of plasma surface melting and coating process according to claim 1, it is characterised in that: cladding is thick in the step 6
Degree is 0.5mm-7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810687.3A CN109136815A (en) | 2018-07-23 | 2018-07-23 | A kind of plasma surface melting and coating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810687.3A CN109136815A (en) | 2018-07-23 | 2018-07-23 | A kind of plasma surface melting and coating process |
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| CN109136815A true CN109136815A (en) | 2019-01-04 |
Family
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| CN201810810687.3A Pending CN109136815A (en) | 2018-07-23 | 2018-07-23 | A kind of plasma surface melting and coating process |
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2018
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