CN104087890B - Method for preparing ceramic coating lining of mud pump cylinder sleeve - Google Patents
Method for preparing ceramic coating lining of mud pump cylinder sleeve Download PDFInfo
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- CN104087890B CN104087890B CN201410344130.7A CN201410344130A CN104087890B CN 104087890 B CN104087890 B CN 104087890B CN 201410344130 A CN201410344130 A CN 201410344130A CN 104087890 B CN104087890 B CN 104087890B
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Abstract
The invention relates to a method for preparing a ceramic coating lining of a mud pump cylinder sleeve and belongs to the fields of wear-resistant and corrosion-resistant ceramic materials and ceramic coatings. According to the method, Al2O3, ZrO2 and TiO2 are taken as raw materials, a ceramic spraying powder material is prepared through centrifugal spraying granulation and plasma arc spheroidization, and the powder material is sprayed to the internal surface of the cylinder sleeve by adopting a plasma spraying technology, so as to form a ceramic lining; meanwhile, in order to relieve the thermal mismatch between a coating layer and a base body and improve the bond strength of the coating layer, a Ni-Al or Ni-Cr-Al metal transition layer is sprayed to the surface of the workpiece; and after spraying is ended, the coating layer is subjected to pore sealing treatment by adopting a pore sealing agent, so that the compactness of the coating layer is improved, and a lubricating action for the polishing treatment of the coating layer is provided. The mud pump cylinder sleeve prepared by the method is excellent in corrosion resistance and wear resistance and long in service life; the method is simple in preparation process and low in cost and is particularly applicable to the preparation of high-performance ceramic coatings of key components, which work under the conditions of strong corrosion and strong wear, of petroleum and geological drilling machinery.
Description
Technical field
The present invention relates to a kind of method for preparing mud slurry pump cylinder jacket ceramic coating liner, belong to wear-and corrosion-resistant pottery material
Material and field of ceramic coatings, the method is especially suitable for oil, geological drilling mechanical key part deep-etching, height under strong abrasive conditions
The preparation of performance ceramic coating.
Background technology
Slush pump is oil, the corollary equipment in geological drilling rig, and cylinder sleeve is the core part of slush pump, for storing mud
Slurry, bears mud pressure, makes reciprocating piston move reciprocatingly to complete suction, the function of spoil disposal slurry in cylinder sleeve.Because of its military service
Working condition severe (pump pressure 17～35mpa, 100～120 times/min of piston jig frequency, 70～170 DEG C of friction Temperature Rise, ph value
10～12, mud sand content 3%～5%), cylinder sleeve needs to bear in acid-base value corrosion and medium in medium abrasive material under high-voltage high-speed
Mechanical wear, when corrosion, wear amount reaches 0.3-0.5mm, cause mud leak, pump pressure decline so that cylinder sleeve is scrapped.Cylinder sleeve
As the consumable accessory of slush pump, change very frequent, this not only causes serious manpower and materials to waste, and affects drilling well and enter
Degree.Therefore, solve high pressure resistant, wear-resistant, the anticorrosive problem of this cylinder sleeve of mud, improve its service life, existing huge warp
Ji benefit, can improve drilling efficiency again.
In prior art, in order to solve mud slurry pump cylinder jacket inner wall corrosion, wear problem, the approach of main employing has five
Kind: first, ordinary carbon steel carburizing-Quenching Treatment, although this cylinder sleeve preparation process is simple, cost is relatively low, and case hardness is relatively
Low (hrc55 about), wear-resistant, corrosion resistance is poor all poor, and its service life only has 200-300 hour；Second,
The internal integrated poured rich chromium cast iron inner sleeve of carbon steel, or inner-outer sleeve is with taper fit formation bi-metal liner, liner high-chromium alloy
Cast iron tool is preferably wear-resisting, corrosion-resistant, and in more than hrc60, compared with monometallic cylinder sleeve, it is little that its life-span reaches 300-500 to hardness
When, but still can not meet the needs of modern drilling, meanwhile, numerous and diverse more than the preparation technology program of this cylinder sleeve；3rd, 45#
Steel inner surface of cylinder liner electrodeposited chromium or iron-nickel-tungsten, coating is corrosion-resistant preferably, and surface accuracy is higher, does not substantially need secondary
Rubbing down is processed, but the method thickness of coating is limited, and anti-wear performance is general, and bond strength is not high, easily takes off in use
Fall, its service life is limited；4th, inlay tungsten-cobalt, stellite inside cylinder sleeve, the performance indications of this cylinder sleeve substantially meet
Require, service life is longer；5th, inside carbon steel, direct insert wear-resistant ceramic inner sleeve, because ceramic hardness is high, wear-resisting resistance to
Corrosive nature is excellent, and the cylinder sleeve life-span was more than more than 1000 hours；But the 4th and the 5th this two classes cylinder sleeve overall price is higher, and deposits
In endoporus processing difficulties, it is extremely difficult to given size, in assembling process, cooperation tension, liner Crushing Problem easily occur；Separately
Outward, using the cylinder sleeve of insert technique, easily occur in use taking out bucket.
Content of the invention
The purpose of the present invention exactly provides one kind to be used for preparing for the weak point in the presence of above-mentioned prior art
The method of mud slurry pump cylinder jacket ceramic coating liner.
The general thought of the present invention is: with al2o3、zro2、tio2Raw material, by centrifugal spray granulation, plasma arc nodularization
Prepare ceramic spraying powder, then, using plasma spraying technology by powder spray to inner surface of cylinder liner formed ceramic-lined,
Meanwhile, coating and the direct thermal mismatching of matrix are alleviated in order to improve, before ceramic coated powder, in workpiece surface spraying ni-
Al or ni-cr-al transition zone, after spraying terminates, carries out sealing pores using hole sealing agent, improves the compactness of coating to coating,
And process offer lubrication for the rubbing down of coating.
The particular technique measure of the present invention is as follows:
The method for preparing mud slurry pump cylinder jacket ceramic coating liner of the present invention comprises the steps:
A, weigh raw material by weight percentage, wherein: al2o370-85%、zro210-20%、tio25-10%, puts into
Carry out ball milling mixing in ball grinder；
B, the powder after ball milling mixing is poured into agitator, add by ratio of weight and the number of copies afterwards water, binding agent, dispersant,
Slurry made by defoamer；Wherein: material: water=1:1.2-1.5, material: binding agent=100:0.5-1, material: dispersant=100:0.3-
0.6, material: defoamer=100:0.2-0.5；
C, by slurry importing centrifugal spray drying comminutor be prepared into reunion powder；
D, using plasma spraying equipment flame stream, spheroidising is carried out to reunion powder；
E, the powder after spheroidising is carried out disperseing, rinses, settles, sieves and obtain dusty spray；
F, Workpiece painting surface is carried out and sandblasting roughening treatment；
G, using plasma spraying equipment in workpiece surface spraying prime coat；
H, using plasma spraying equipment in workpiece surface spraying ceramic topcoats；
I, ceramic coating is carried out sealing pores, surface polishing, that is, obtain mud slurry pump cylinder jacket ceramic coating liner.
More specifically:
Put in step a of the present invention carry out in ball grinder ball milling mixing time be 3-5 hour.
Described al2o3For α-al2o3The al that content is more than 90%2o3Powder, described zro2It is containing 5-8%y2o3Zro2Powder
Material, described tio2For rutile-type tio2The tio that content is more than 90%2Powder.
Any one in polyvinyl alcohol, methylcellulose, carboxycellulose or ethyl cellulose taken from by described binding agent；
Described dispersant takes from any one of sodium salt or ammonium salt；Described defoamer is taken from higher alcohols, tributyl phosphate or alkoxy type
Any one.
Centrifugal spray granulation technological parameter in described step c: leaving air temp is 120-150 DEG C, EAT is 220-
280 DEG C, centrifugal spray disc spin speed is 4500-6000 rev/min.
Powder plasma spheroidization handling process parameter in described step d: electric current is 600-750a, voltage is 70-90a,
Main gas ar flow is 80-100l/min, auxiliary gas h2Flow is 20-30l/min, and powder sending quantity is 80-120g/min.
The ceramic spraying powder that particle diameter is -150/+325 mesh is taken to make spraying powder in step e.
Described step f, before spraying, goes to degrease using organic solvent cleaning workpiece surface, then uses Brown Alundum or stone
Sand carries out blasting treatment to surface of the work, increases surface roughness, and sandblasting air pressure is 0.3-0.5mpa.
The zro of described step h2Toughness reinforcing al2o3-tio2Ceramic topcoats spraying parameter: electric current is 500-650a, electricity
Press as 70-85a, main gas (ar) flow is 60-80l/min, auxiliary throughput is 15-25l/min, powder sending quantity is 30-45g/min,
Spray distance is 80-120cm.
The prime coat thickness of described step g is 50-100 μm, and ceramic topcoats thickness is 250-400 μm.
The ceramic hole sealing agent in described step i, ceramic coating being carried out with sealing pores takes from vinyl, phenolic resin, ring
Any one in oxygen tree fat or paraffin.
Beneficial effects of the present invention are as follows:
Because the ceramic coating liner that the present invention is prepared using plasma spraying technology not only has the high hard of ceramic cylinder jacket
Degree, high abrasion, decay resistance, its service life is suitable with ceramic cylinder jacket, and this cylinder sleeve one-shot forming is it is not necessary to secondary dress
Join, it is to avoid a series of bad problem occurring in inner-outer sleeve assembling process, meanwhile, Coating Surface Roughness little it is only necessary to simple
Single rubbing down can be to use, meanwhile, and sprayed on material is cheap, preparation process is simple, and overall price/performance ratio is high.
Brief description
The structural representation of the ceramic coating liner mud slurry pump cylinder jacket that Fig. 1 provides for the present invention.
In figure sequence number: 1- cylinder sleeve matrix, 2- is ceramic-lined.
Specific embodiment
The present invention is further described below with reference to embodiment:
The method for preparing mud slurry pump cylinder jacket ceramic coating liner of the present invention comprises the steps:
A, weigh raw material by weight percentage, wherein: al2o370-85%、zro210-20%、tio25-10%, puts into
Carry out ball milling mixing 3-5 hour in ball grinder；Described al2o3For α-al2o3The al that content is more than 90%2o3Powder, described zro2For
Containing 5-8%y2o3Zro2Powder, described tio2For rutile-type tio2The tio that content is more than 90%2Powder；
B, the powder after ball milling mixing is poured into agitator, add by ratio of weight and the number of copies afterwards water, binding agent, dispersant,
Defoamer stirring 1-3 hour makes slurry；Wherein: material: water=1:1.2-1.5, material: binding agent=100:0.5-1, material: dispersant=
100:0.3-0.6, material: defoamer=100:0.2-0.5；Described binding agent takes from polyvinyl alcohol, methylcellulose, carboxylated fiber
Any one in element or ethyl cellulose；Described dispersant takes from any one of sodium salt or ammonium salt；Described defoamer is taken from
Any one in higher alcohols, tributyl phosphate or alkoxy type；
C, by slurry importing centrifugal spray drying comminutor be prepared into reunion powder；Wherein technological parameter is as follows: goes out wind-warm syndrome
Spend for 120-150 DEG C, EAT is 220-280 DEG C, centrifugal spray disc spin speed is 4500-6000 rev/min；
D, using plasma spraying equipment flame stream, spheroidising is carried out to reunion powder；Wherein powder plasma spheroidization
Handling process parameter is as follows: electric current is 600-750a, and voltage is 70-90a, and main gas ar flow is 80-100l/min, auxiliary gas h2Stream
Measure as 20-30l/min, powder sending quantity is 80-120g/min；
E, the powder after spheroidising is carried out disperseing, rinses, settles, sieving, take the pottery that particle diameter is -150/+325 mesh
Spraying powder made by spraying powder；
F, Workpiece painting surface is carried out and sandblasting roughening treatment；Before spraying, using acetone or other are organic molten
Go to degrease in agent cleaning workpiece surface, then with Brown Alundum or quartz sand, surface of the work is carried out with blasting treatment, increases surface thick
Rugosity, sandblasting air pressure is 0.3-0.5mpa；
G, ni-al the or ni-cr-al bottoming for 50-100 μm in workpiece surface spraying thickness using plasma spraying equipment
Layer, to alleviate the thermal mismatching of ceramic coating and matrix, sprays work parameter: electric current is 450-550a, voltage is 60-75a, main gas
(ar) flow is 65-80l/min, and auxiliary throughput is 10-15l/min, and powder sending quantity is 25-35g/min, and spray distance is 80-
120cm；
H, using plasma spraying equipment in workpiece surface spraying ceramic topcoats；The prime coat thickness of described step g is 50-
100 μm, ceramic topcoats thickness is 250-400 μm；
I, ceramic coating is carried out sealing pores, surface polishing, that is, obtain mud slurry pump cylinder jacket ceramic coating liner；Described
The ceramic hole sealing agent that ceramic coating is carried out with sealing pores takes from appointing in vinyl, phenolic resin, epoxy resin or paraffin
Meaning is a kind of；The preferential hole sealing agent selected of the present invention is microcrystalline wax, and treatment temperature is 60-90 DEG C, using microcrystalline wax sealing of hole, no
The only packing hole of coating, meanwhile, is that rubbing down processes and provides lubrication.
The specific embodiment of the present invention is as follows:
Embodiment 1
A) weigh 70% al by weight percentage2o3Powder, 20% contain 8%y2o3Zro2Powder, 10% tio2Powder
Material, puts into and carries out ball milling mixing in ball grinder 3 hours；
B) powder after ball milling mixing is poured into agitator, add water, binding agent, dispersant, froth breaking by ratio of weight and the number of copies
Agent stirring makes slurry in 1 hour；Wherein: material: water=1:1.2, material: binding agent=100:0. 5, material: dispersant=100:0. 3；
Material: defoamer=100:0.2；Described water is distilled water or deionized water；Described binding agent is polyvinyl alcohol；Described dispersant
For the basic sodium sulfonate of dodecane；Described defoamer is tributyl phosphate；
C) peristaltic pump is utilized to import in centrifugal spray drying granulation by slurry, by technological parameter: leaving air temp is 120 DEG C,
EAT is 220 DEG C, and centrifugal spray disc spin speed is 4500 revs/min, is prepared into reunion powder；
D) utilize the flame stream of plasma spraying equipment, by technological parameter: electric current is 600a, voltage is 70a, main gas (ar) stream
Measure as 80l/min, auxiliary gas (h2) flow is 20l/min, powder sending quantity is 80g/min, carries out spheroidising to reunion powder；
E) powder after spheroidising is carried out disperseing, rinses, settles, sieving, take the pottery that particle diameter is -150/+325 mesh
Spraying powder made by spraying powder；
F), before spraying, go to degrease using acetone cleaning workpiece surface, then with Brown Alundum, surface of the work is sprayed
Sand is processed, and increases surface roughness, and sandblasting air pressure is 0.3mpa；
G) the ni-al layer being 50 μm in workpiece surface spraying thickness using plasma spraying equipment, to alleviate ceramic coating
With the thermal mismatching of matrix, spray work parameter: electric current is 450a, voltage is 60a, main gas (ar) flow is 65l/min, auxiliary throughput
For 10l/min, powder sending quantity is 25g/min, and spray distance is 80cm；
H) ceramic coating being 250 μm in prime coat surface spraying thickness using plasma spraying equipment, to improve cylinder sleeve
Wear-resisting, decay resistance, spraying parameter: electric current be 500a, voltage be 70a, main gas (ar) flow be 60l/min, auxiliary
Throughput is 15l/min, and powder sending quantity is 30g/min, and spray distance is 80cm；
I) to the workpiece after coating, carry out sealing pores with microcrystalline wax, treatment temperature is 60 DEG C, then carry out at rubbing down
Reason.
The ceramic coating liner cylinder sleeve of preparation under this process conditions, tests on drilling mud pump, and its service life reaches
1500 hours.
Embodiment 2
A) by weight percentage, weigh 75% al2o3Powder, 20% contain 5%y2o3Zro2Powder, 5% tio2Powder
Material, puts into and carries out ball milling mixing in ball grinder 4 hours；
B) powder after ball milling mixing is poured into agitator, add water, binding agent, dispersant, froth breaking by ratio of weight and the number of copies
Agent stirring makes slurry in 1 hour；Wherein: material: water=1:1.3, material: binding agent=100:0.6, material: dispersant=100:0.4；Material:
Defoamer=100:0.3；Described water is distilled water or deionized water；Described binding agent is methylcellulose；Described dispersant is
Ammonium polymethacrylate salt；Described froth breaking is agent tributyl phosphate；
C) peristaltic pump is utilized to import in centrifugal spray drying granulation by slurry, by technological parameter: leaving air temp is 130 DEG C,
EAT is 240 DEG C, and centrifugal spray disc spin speed is 5000 revs/min, is prepared into reunion powder；
D) utilize the flame stream of plasma spraying equipment, by technological parameter: electric current is 700a, voltage is 80a, main gas (ar) stream
Measure as 90l/min, auxiliary gas (h2) flow be 25l/min, powder sending quantity be 90g/min, spheroidising is carried out to reunion powder；
E) powder after spheroidising is carried out disperseing, rinses, settles, sieving, take the pottery that particle diameter is -150/+325 mesh
Spraying powder made by spraying powder；
F), before spraying, go to degrease using acetone cleaning workpiece surface, then with Brown Alundum, surface of the work is sprayed
Sand is processed, and increases surface roughness, and sandblasting air pressure is 0.4mpa；
G) the ni-al prime coat being 70 μm in workpiece surface spraying thickness using plasma spraying equipment, to alleviate pottery
Coating and the thermal mismatching of matrix, spray work parameter: electric current is 500a, voltage is 65a, main gas (ar) flow is 70l/min, auxiliary gas
Flow is 14l/min, and powder sending quantity is 30g/min, and spray distance is 90cm；
H) ceramic coating being 300 μm in prime coat surface spraying thickness using plasma spraying equipment, to improve cylinder sleeve
Wear-resisting, decay resistance, spraying parameter: electric current be 550a, voltage be 75a, main gas (ar) flow be 70l/min, auxiliary
Throughput is 20l/min, and powder sending quantity is 35g/min, and spray distance is 90cm；
I) to the workpiece after coating, carry out sealing pores with microcrystalline wax, treatment temperature is 70 DEG C, then carry out at rubbing down
Reason.
The ceramic coating liner cylinder sleeve of preparation under this process conditions, tests on drilling mud pump, and its service life reaches
1600 hours.
Embodiment 3
A) by weight percentage, weigh 80% al2o3Powder, 10% contain 7%y2o3Zro2Powder, 10% tio2
Powder, puts into and carries out ball milling mixing in ball grinder 5 hours；
B) powder after ball milling mixing is poured into agitator, add water, binding agent, dispersant, froth breaking by ratio of weight and the number of copies
Agent stirring makes slurry in 2 hours；Wherein: material: water=1:1.4, material: binding agent=100:0.7, material: dispersant=100:0.5；Material:
Defoamer=100:0.4；Described water is distilled water or deionized water；Described binding agent is polyvinyl alcohol；Described dispersant is poly-
Methacrylic acid ammonium salt；Described defoamer is tributyl phosphate；
C) peristaltic pump is utilized to import in centrifugal spray drying granulation by slurry, by technological parameter: leaving air temp is 140 DEG C,
EAT is 260 DEG C, and centrifugal spray disc spin speed is 5500 revs/min, is prepared into reunion powder；
D) utilize the flame stream of plasma spraying equipment, by technological parameter: electric current is 750a, voltage is 90a, main gas (ar) stream
Measure as 100l/min, auxiliary gas (h2) flow be 30l/min, powder sending quantity be 120g/min, spheroidising is carried out to reunion powder；
E) powder after spheroidising is carried out disperseing, rinses, settles, sieving, take the pottery that particle diameter is -150/+325 mesh
Spraying powder made by spraying powder；
F) spray before, go to degrease using acetone or other organic solvent cleaning workpiece surfaces, then use Brown Alundum or
Quartz sand carries out blasting treatment to surface of the work, increases surface roughness, and sandblasting air pressure is 0.5mpa；
G) the ni-al prime coat being 100 μm in workpiece surface spraying thickness using plasma spraying equipment, to alleviate pottery
Coating and the thermal mismatching of matrix, spray work parameter: electric current is 550a, voltage is 75a, main gas (ar) flow is 80l/min, auxiliary gas
Flow is 15l/min, and powder sending quantity is 35g/min, and spray distance is 100cm；
H) ceramic coating being 400 μm in prime coat surface spraying thickness using plasma spraying equipment, to improve cylinder sleeve
Wear-resisting, decay resistance, spraying parameter: electric current be 650a, voltage be 85a, main gas (ar) flow be 80l/min, auxiliary
Throughput is 25l/min, and powder sending quantity is 45g/min, and spray distance is 100cm；
I) to the workpiece after coating, carry out sealing pores with microcrystalline wax, treatment temperature is 80 DEG C, then carry out at rubbing down
Reason.
The ceramic coating liner cylinder sleeve of preparation under this process conditions, tests on drilling mud pump, and its service life reaches
1800 hours.
Embodiment 4
A) by weight percentage, weigh 80% al2o3Powder, 15% contain 8%y2o3Zro2Powder, 5% tio2Powder
Material, puts into and carries out ball milling mixing 3-5 hour in ball grinder；
B) powder after ball milling mixing is poured into agitator, add water, binding agent, dispersant, froth breaking by ratio of weight and the number of copies
Agent stirring makes slurry in 2 hours；Wherein: material: water=1:1.5, material: binding agent=100:1, material: dispersant=100:0.6；Material: disappear
Infusion=100:0.5；Described water is distilled water or deionized water；Described binding agent is polyvinyl alcohol；Described dispersant is poly- first
Base acrylic acid ammonium salt；Described defoamer is tributyl phosphate；
C) peristaltic pump is utilized to import in centrifugal spray drying granulation by slurry, by technological parameter: leaving air temp is 150 DEG C,
EAT is 280 DEG C, and centrifugal spray disc spin speed is 6000 revs/min, is prepared into reunion powder；
D) utilize the flame stream of plasma spraying equipment, by technological parameter: electric current is 700a, voltage is 85a, main gas (ar) stream
Measure as 95l/min, auxiliary gas (h2) flow be 28l/min, powder sending quantity be 120g/min, spheroidising is carried out to reunion powder；
E) powder after spheroidising is carried out disperseing, rinses, settles, sieving, take the pottery that particle diameter is -150/+325 mesh
Spraying powder made by spraying powder；
F), before spraying, go to degrease using acetone cleaning workpiece surface, then with Brown Alundum, surface of the work is sprayed
Sand is processed, and increases surface roughness, and sandblasting air pressure is 0.4mpa；
G) ni-al being 90 μm in workpiece surface spraying thickness using plasma spraying equipment, with alleviate ceramic coating with
The thermal mismatching of matrix, sprays work parameter: electric current is 480a, voltage is 70a, main gas (ar) flow is 75l/min, auxiliary throughput is
14l/min, powder sending quantity is 30g/min, and spray distance is 120cm；
H) ceramic coating being 350 μm in prime coat surface spraying thickness using plasma spraying equipment, to improve cylinder sleeve
Wear-resisting, decay resistance, spraying parameter: electric current be 600a, voltage be 80a, main gas (ar) flow be 75l/min, auxiliary
Throughput is 20l/min, and powder sending quantity is 40g/min, and spray distance is 120cm；
I) to the workpiece after coating, carry out sealing pores with microcrystalline wax, treatment temperature is 90 DEG C, then carry out at rubbing down
Reason.
The ceramic coating liner cylinder sleeve of preparation under this process conditions, tests on drilling mud pump, and its service life reaches
2000 hours.
Claims (1)
1. a kind of method for preparing mud slurry pump cylinder jacket ceramic coating liner it is characterised in that: methods described includes following steps
Rapid:
A, weigh raw material by weight percentage, wherein: al2o370-85%、zro210-20%、tio25-10%, puts into ball grinder
Inside carry out ball milling mixing；Described al2o3For α-al2o3The al that content is more than 90%2o3Powder, described zro2It is containing 5-8%
y2o3Zro2Powder, described tio2For rutile-type tio2The tio that content is more than 90%2Powder；
B, the powder after ball milling mixing is poured into agitator, add water, binding agent, dispersant, froth breaking afterwards by ratio of weight and the number of copies
Slurry is made in agent；Wherein: material: water=1:1.2-1.5, material: binding agent=100:0.5-1, material: dispersant=100:0.3-0.6, material:
Defoamer=100:0.2-0.5；Described binding agent is taken from polyvinyl alcohol, methylcellulose, carboxycellulose or ethyl cellulose
Any one；Described dispersant takes from any one of sodium salt or ammonium salt；Described defoamer takes from higher alcohols, tributyl phosphate
In any one；
C, by slurry importing centrifugal spray drying comminutor be prepared into reunion powder；Its technological parameter: leaving air temp is 120-150
DEG C, EAT is 220-280 DEG C, and centrifugal spray disc spin speed is 4500-6000 rev/min；
D, using plasma spraying equipment flame stream, spheroidising is carried out to reunion powder；Its technological parameter: electric current is 600-
750a, voltage is 70-90v, and main gas ar flow is 80-100l/min, auxiliary gas h2Flow is 20-30l/min, and powder sending quantity is 80-
120g/min；
E, the powder after spheroidising is carried out disperseing, rinses, settles, sieves and obtain dusty spray；The grain of described dusty spray
Footpath is -150/+325 mesh；
F, Workpiece painting surface is carried out and sandblasting roughening treatment；Go oil removing first with organic solvent cleaning workpiece surface
Dirt, then carries out blasting treatment with Brown Alundum or quartz sand to surface of the work, increases surface roughness, and sandblasting air pressure is
0.3-0.5mpa；
G, using plasma spraying equipment in workpiece surface spraying prime coat；The thickness of described prime coat is 50-100 μm；
H, using plasma spraying equipment in workpiece surface spraying ceramic topcoats；Its technological parameter: electric current is 500-650a, voltage
For 70-85v, main gas ar flow is 60-80l/min, and auxiliary throughput is 15-25l/min, and powder sending quantity is 30-45g/min, spraying
Distance is 80-120cm；The thickness of described ceramic topcoats is 250-400 μm；
I, ceramic topcoats are carried out sealing pores, surface polishing, that is, obtain mud slurry pump cylinder jacket ceramic coating liner；Wherein at sealing of hole
During reason, ceramic hole sealing agent used takes from any one in vinyl, phenolic resin, epoxy resin or paraffin.
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| CN113549859A (en) * | 2021-06-22 | 2021-10-26 | 河南科技大学 | Composite ceramic coating for insulating bearing of wind driven generator and preparation method thereof |
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| CN114669390A (en) * | 2022-03-29 | 2022-06-28 | 北京理工大学 | Method for screening plasma spheroidized powder |
| CN114522794A (en) * | 2022-03-29 | 2022-05-24 | 北京理工大学 | Screening method for reducing content of crushed powder in plasma spheroidized powder |
| CN114700165A (en) * | 2022-03-29 | 2022-07-05 | 北京理工大学 | Screening method for obtaining complete spherical plasma spheroidized powder |
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| US20080057275A1 (en) * | 2006-08-31 | 2008-03-06 | Paul Richard Grzesik | Method and apparatus for minimizing oxidation pitting of refractory metal vessels |
| US20090176110A1 (en) * | 2008-01-08 | 2009-07-09 | General Electric Company | Erosion and corrosion-resistant coating system and process therefor |
| CN102776466A (en) * | 2012-08-10 | 2012-11-14 | 昆山乔锐金属制品有限公司 | Preparation method for composite coating by using stainless steel as base material |
| CN103484857B (en) * | 2013-10-09 | 2015-12-09 | 河北工业大学 | Metallic matrix ceramic coating is prepared the method for nano modification amorphous ceramic coating |
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| CN109868440A (en) * | 2017-11-25 | 2019-06-11 | 中国地质大学（北京） | A kind of preparation method of the wear-resisting modified layer of the anti-mud drum in drilling bit steel body surface |
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