CN107012461A - A kind of preparation method of high corrosion-resistant nickel-base alloy coating - Google Patents
A kind of preparation method of high corrosion-resistant nickel-base alloy coating Download PDFInfo
- Publication number
- CN107012461A CN107012461A CN201710330302.9A CN201710330302A CN107012461A CN 107012461 A CN107012461 A CN 107012461A CN 201710330302 A CN201710330302 A CN 201710330302A CN 107012461 A CN107012461 A CN 107012461A
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- China
- Prior art keywords
- workpiece
- coating
- alloy powder
- based alloy
- cladding
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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
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
Abstract
A kind of preparation method of high corrosion-resistant nickel-base alloy coating, coating main component is Ni, Cr, Fe element, specific implementation method：Outer surface of workpiece is pre-processed first, by outer surface of workpiece precoating Co-based alloy powder；Then workpiece is fixed on rotary table, makes workpiece, turntable and load coil coaxial；Then setting induction heating current size, heat time, start motor belt motor and start building part rotation, and then heat the Co-based alloy powder of precoating；When forming the coating of metallurgical binding and excellent performance, power supply is closed, workpiece is naturally cooled to room temperature；Workpiece is finally removed, the quality and size of outer surface of workpiece coating is checked.The present invention quickly obtains the coating of metallurgical binding and excellent performance by the control to induced-current, time.The coating of preparation is 120 DEG C, H in test temperature2S partial pressures are 3.6MPa, CO2Partial pressure is 1.8MPa, after NaCl contents is immersion 96h in 14wt% solution, measures the year corrosion rate only 0.01233mm/a of the coating, and anti-corrosion grade is level Four.
Description
Technical field
The invention belongs to Surface Engineering field, and in particular to a kind of workpiece outer wall coating superaudio induction heating side
Method.
Background technology
The characteristics of environment in many peracidity oil gas fields has high temperature, high hydrogen sulfide, high carbon dioxide and high chloride ion.
Under such harsh operating mode, the Corrosion Types such as hydrogen induced cracking (HIC) and sulfide-stress cracking easily occur for metal material, make
Into the significant wastage of material, trigger huge catastrophic failure, so as to influence the sustainable development of economy.Therefore, for peracid
The research of property oil gas field anti-corrosion coating seems very urgent.The A of patent CN 104988495 (Zhang Wei, Yu Helong, Wang Yong, Zhao Rui,
Ji little Chao, Zhang Pan, Zhang Mengqing, a kind of sleeve type workpiece inner wall sensing cladding reproducing method) provide a kind of iron-based sleeve type
Alloy workpiece inwall senses cladding reproducing method, but primarily directed to the research of material wear-resistant performance.Patent CN
102560476 A (Xi Shengqi, Wang Chunchang, a kind of metal inner wall coating sensing heating clinkering method) provide a kind of metal tube
Inside coating sensing heating clinkering method and the research for being related to wear and corrosion behavior, but the Service Environment of the patent floating coat
The environmental quality of peracidity oil gas field is not had.And the main method that cladding is sensed using superaudio of the present invention, it is prepared for fitting
High corrosion-resistant nickel-base alloy coating for peracidity oil gas field environment.The coating not only has excellent corrosion resisting property, and
Cost can greatly be reduced.
The content of the invention
In order to solve the problem of above-mentioned prior art is present, the purpose of the present invention be to prepare it is a kind of inexpensive and anti-corrosion
The coating of excellent performance.This method is by sensing cladding electric current and the accurate control of time, making coating quickly be formed with matrix
Metallurgical binding, so as to obtain high performance ni base alloy coating.
The workpiece outer wall sensing cladding reproducing method that the present invention is provided, comprises the following steps：
A) outer surface of workpiece is pre-processed；
B) in outer surface of workpiece precoating Co-based alloy powder；
C cladding equipment) is sensed by superaudio and prepares nickel-base alloy external coating；
D) coating prepared by sensing cladding is machined and performance detection.
It is preferred that, the step A) outer surface polishing and cleaning treatment are carried out to pipe class matrix, remove outer surface of matrix
Exfoliation layer, pollutant, oxide layer, fatigue layer and cut, make that workpiece combined with alloy powder is more preferable.
The step B) be specially：Co-based alloy powder is mixed with binding agent, paste is made, the work is uniformly applied to
Part outer surface, carries out drying and processing to workpiece afterwards, binding agent is volatilized, and Co-based alloy powder is formed with outer surface of workpiece
Physical bond.The composition (wt%) of the Co-based alloy powder is：
19.0-25.5Cr, 16.0-22.0Fe, 6.0-8.0Mo, Co≤6.0,0.5-2.5Cu, W≤2.5, Si≤1.0, Mn
≤ 1.0, surplus is Ni.
It is preferred that, will pass through step B) processing workpiece be fixed on rotary table, filled using superaudio sensing heating
Put, by adjust induced-current size and sensing the cladding time, to the precoating outer surface of workpiece Co-based alloy powder
Carry out induction heating.Obtain with after metallurgical binding and the outer wall coating of excellent performance, close power supply, treat sensing heating line
Circle is cooled to room temperature and closes recirculated water.
It is preferred that, the sensing melting and coating process parameter is：Sense cladding electric current 1000-1300A, sensing cladding time 50-
90s, frequency 20-70KHz, the rotary speed of the rotary table are 20-60r/min.
It is preferred that, the step D) be specially：Machining acquisition certain size is carried out to the ni base alloy coating of preparation
Sample, the metallurgical binding degree of coating is detected by SEM, passes through electro-chemical test and HTHP immersion test and detects coating
Corrosion resistance.
Ni base alloy coating can be produced by sufacing using the present invention, its advantage is：
The sensing cladding of self-fluxing alloy superaudio is easy to control, and speed is fast, homogeneous heating, and coating quality is high；Coating with
There is a white band (DTB- diffusion transfers band) between matrix, it is metallurgical binding to indicate both, coating binding force is stronger；Supersonic
Frequency sensing melting and coating process heat penetration is shallow, and this is to keeping workpiece substrate performance, and it is all favourable to reduce workpiece deformation；Superaudio sense
Answer that melting and coating process noise is small, labor intensity is low, greatly improves working environment.
The corrosion resisting property of coating is embodied：Coating prepared by this kind of method is 120 DEG C, H in test temperature2S partial pressures are
3.6MPa, CO2Partial pressure is 1.8MPa, after NaCl contents is immersion 96h in 14wt% solution, measures the year corrosion speed of the coating
Rate is only 0.01233mm/a, compares metal material corrosion resistance standard, and grade that its is anti-corrosion is level Four.
Brief description of the drawings
The BSE images for the transition zone that Fig. 1 is formed for a kind of workpiece sensing cladding that the present invention is provided.
A kind of BSE images for outer surface of workpiece ni base alloy coating that Fig. 2 provides for the present invention.
Embodiment
With embodiment, the present invention will be described in more detail below.
Embodiment 1：
A kind of outer surface of workpiece sensing cladding method of the present embodiment, workpiece external diameter is 65mm, is highly 33mm, precoating nickel
Base self-fluxing alloy powder coating layer thickness is 1.0-3.0mm, is comprised the following steps：
Step 1：Outer surface of workpiece is polished and cleaning treatment, remove outer surface of matrix exfoliation layer, pollutant, oxidation
Layer, fatigue layer and cut, make workpiece and alloy powder form good combination.
Step 2：By waterglass and deionized water according to mass ratio 3：80 DEG C are heated to after 2 mixing, binding agent is made.By nickel
Base alloy powder is with binding agent according to mass ratio 10：1 is mixed and stirred for uniformly, paste being made.Obtained paste is uniform
The outer surface of workpiece after step 1 processing is coated on, thickness is uniform.Put the workpiece in air dry oven and carry out at drying
Reason, drying temperature is set to 120 DEG C, and time 2h makes the bonding agent inside preset coating volatilize；
Step 3：Preparation before sensing heating, comprises the following steps：
(1) the dried workpiece of step 2 is placed on refractory brick, and be placed on together on lifting platform；
(2) it is 75mm to choose external diameter, and thickness is 5mm load coil, and the workpiece described in step 2 is placed in into sensing
Heating coil center；
(3) recirculated water is opened；
Step 3：Cladding equipment is sensed by superaudio and prepares nickel-base alloy external coating, is comprised the following steps：
(1) induction heating temperature is determined according to the fusing point of self-fusible alloy powder of nickel-base coating, set induction heating current as
1000-1200A；
(2) heating frequency of load coil is set as 20-70kHz；
(3) start turntable, rotated with 20-60r/min speed；
(4) heating power supply of load coil is opened, the heat time is 55-75s；
(5) power supply is closed；
(6) treat that load coil is cooled to room temperature, close recirculated water.
Step 4：When the coating for sensing cladding preparation is cooled to room temperature, workpiece is taken out, outer surface of workpiece coating chi is checked
Very little and quality.
Embodiment 2：
A kind of outer surface of workpiece sensing cladding method of the present embodiment, workpiece external diameter is 65mm, is highly 50mm, precoating nickel
Base self-fluxing alloy powder coating layer thickness is 1.0-3.0mm, is comprised the following steps：
Step 1：Outer surface of workpiece is polished and cleaning treatment, remove outer surface of matrix exfoliation layer, pollutant, oxidation
Layer, fatigue layer and cut, make workpiece and alloy powder form good combination.
Step 2：By waterglass and deionized water according to mass ratio 3：80 DEG C are heated to after 2 mixing, binding agent is made.By nickel
Base alloy powder is with binding agent according to mass ratio 10：1 is mixed and stirred for uniformly, paste being made.Obtained paste is uniform
The outer surface of workpiece after step 1 processing is coated on, thickness is uniform.Put the workpiece in air dry oven and carry out at drying
Reason, drying temperature is set to 150 DEG C, and time 2h makes the bonding agent inside preset coating volatilize；
Step 3：Preparation before sensing heating, comprises the following steps：
(1) the dried workpiece of step 2 is placed on refractory brick, and be placed on together on lifting platform；
(2) it is 75mm to choose external diameter, and thickness is 5mm load coil, and the workpiece described in step 2 is placed in into sensing
Heating coil center；
(3) recirculated water is opened；
Step 3：Cladding equipment is sensed by superaudio and prepares nickel-base alloy external coating, is comprised the following steps：
(1) induction heating temperature is determined according to the fusing point of self-fusible alloy powder of nickel-base coating, set induction heating current as
1100-1300A；
(2) heating frequency of load coil is set as 20-70kHz；
(3) start turntable, rotated with 20-60r/min speed；
(4) heating power supply of load coil is opened, the heat time is 60-90s；
(5) power supply is closed；
(6) treat that load coil is cooled to room temperature, close recirculated water.
Step 4：When the coating for sensing cladding preparation is cooled to room temperature, pipe is taken out, outer surface of workpiece coating chi is checked
Very little and quality.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (7)
1. a kind of preparation method of the Ni-based coating of high corrosion-resistant, it is characterised in that comprise the following steps：
A) outer surface of workpiece is pre-processed；
B) in outer surface of workpiece precoating Co-based alloy powder；
C cladding equipment) is sensed by superaudio and prepares nickel-base alloy external coating；
D) coating prepared by sensing cladding is machined and performance detection.
2. it is specially according to the method described in claim 1, it is characterised in that the step A)：Outer surface of workpiece is beaten
Mill and cleaning treatment, remove outer surface of matrix exfoliation layer, pollutant, oxide layer, fatigue layer and cut, make workpiece and alloy powder
Form good combination.
3. it is specially according to the method described in claim 1, it is characterised in that the step B)：By Co-based alloy powder with gluing
Agent mixing is tied, paste is made, the outer surface of workpiece is evenly applied to, drying and processing is carried out to workpiece afterwards, makes binding agent
Volatilization, and make Co-based alloy powder and outer surface of workpiece formation physical bond.
4. method according to claim 3, it is characterised in that the composition (wt%) of the Co-based alloy powder is：
19.0-25.5Cr, 16.0-22.0Fe, 6.0-8.0Mo, Co≤6.0,0.5-2.5Cu, W≤2.5, Si≤1.0, Mn≤
1.0, surplus is Ni.
5. it is specially according to the method described in claim 1, it is characterised in that the step C)：Step B will be passed through) processing
Workpiece is fixed on the rotary table placed vertically, makes workpiece and load coil and turntable coaxial, outer surface of workpiece
With induction coil gap be 4-8mm, open recirculated water, using superaudio induction heating apparatus by adjust induced-current size and
Sense the cladding time, induction heating is carried out to the Co-based alloy powder of the outer surface of workpiece, there is metallurgical junction when obtaining
Close and after the outer wall coating of excellent performance, terminate heating, close power supply, treat that load coil is cooled to room temperature, close circulation
Water.
6. method according to claim 5, it is characterised in that the sensing melting and coating process parameter is：Sense cladding electric current
For 1000-1300A, sensing cladding time be 50-90s, frequency be 20-70KHz, the rotary table rotary speed be
20-60r/min。
7. it is specially according to the method described in claim 1, it is characterised in that the step D)：The nickel-base alloy of preparation is applied
Layer carries out the sample that machining obtains certain size, and the metallurgical binding degree of coating is detected by SEM, passes through electro-chemical test
The corrosion resistance of coating is detected with HTHP immersion test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710330302.9A CN107012461A (en) | 2017-05-11 | 2017-05-11 | A kind of preparation method of high corrosion-resistant nickel-base alloy coating |
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| CN201710330302.9A CN107012461A (en) | 2017-05-11 | 2017-05-11 | A kind of preparation method of high corrosion-resistant nickel-base alloy coating |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588710A (en) * | 2018-07-24 | 2018-09-28 | 武汉材料保护研究所有限公司 | A kind of ni base alloy coating and composite assistant preparation method for cold coating Medium frequency induction cladding |
| CN108914119A (en) * | 2018-08-02 | 2018-11-30 | 李庆杰 | A kind of preparation method incuding cladding slider bed platen |
| CN109988958A (en) * | 2019-03-08 | 2019-07-09 | 北京矿冶科技集团有限公司 | Co-based alloy powder, corresponding corrosion-resistant finishes and preparation method thereof |
| CN110079799A (en) * | 2019-06-18 | 2019-08-02 | 徐州徐工基础工程机械有限公司 | A kind of preparation method of the surface graded wear-resistant coating of shaft-like workpiece |
| CN112410656A (en) * | 2019-08-22 | 2021-02-26 | 日本冶金工业株式会社 | Highly corrosion-resistant Ni-Cr-Mo steel excellent in weldability and surface properties, and method for producing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588710A (en) * | 2018-07-24 | 2018-09-28 | 武汉材料保护研究所有限公司 | A kind of ni base alloy coating and composite assistant preparation method for cold coating Medium frequency induction cladding |
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Application publication date: 20170804 |