CN105385898B - A kind of preparation method of flexible wire used for hot spraying - Google Patents
A kind of preparation method of flexible wire used for hot spraying Download PDFInfo
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- CN105385898B CN105385898B CN201510818616.4A CN201510818616A CN105385898B CN 105385898 B CN105385898 B CN 105385898B CN 201510818616 A CN201510818616 A CN 201510818616A CN 105385898 B CN105385898 B CN 105385898B
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- flexible wire
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- alloy powder
- hot spraying
- silicone rubber
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Coating By Spraying Or Casting (AREA)
Abstract
The invention belongs to turbogenerator field, specially a kind of preparation method of new flexible wire used for hot spraying, using dusty material for the component surface coating coating with wear-resistant grain, anti-stiff dough, anti-fine motion and particle Erosive Properties that works at high temperature, the preparation of each h type engine h like parts face coat can be widely applied to.The present invention passes through vacuum atomizing process procedure equipment development, matching, the systematic Study of integral device, the content control of alloying element, impurity element, particularly control of oxygen content etc., it is prepared for alloy powder, by the selection of rubber adhesive system, flexible wire is finally prepared in the design of flexible wire machine-shaping device.The flexible wire material used for hot spraying exactly plays a kind of extremely important raising adhesion removed of holding and acted on, also to possess excellent high-temperature heat-resistance performance simultaneously, the use demand of engine is met, spraying this kind of Novel wire can make the ability to work of parts improve 3~4 times.
Description
Technical field
The invention belongs to turbogenerator field, specially a kind of preparation method of new flexible wire used for hot spraying is adopted
It is used for the parts with wear-resistant grain, anti-stiff dough, anti-fine motion and particle Erosive Properties that work at high temperature with dusty material
Face coat is applied, and can be widely applied to the preparation of each h type engine h like parts face coat.
Background technology
When developing modernization gas-turbine unit, the efficiency of engine in itself is either improved, or raising is started
The efficiency of machine part particularly compressor all has a very big significance.And engine thermal end pieces, especially combustion chamber componentses, institute
It is extremely important using the heat resistance of material.For this reason, it may be necessary to apply a variety of refractory coatings on material surface, with reduce by
Gas attack, the material produced in high temperature weares and teares.
The content of the invention
It is an object of the invention to provide a kind of preparation method of new flexible wire used for hot spraying, acquisition it is used for hot spraying
Flexible wire possesses higher coating heat-proof quality and bond strength, meets engine component applying working condition requirement.
The technical scheme is that：
A kind of preparation method of new flexible wire used for hot spraying, is comprised the following steps that：
1) preparation of alloy powder
A) dispensing
Alloy powder uses nickel-base alloy, by weight percentage, and its chemical composition is：Al 20~24；Cr 1.5~
4.0；W 0.5~2.0；Mo 0.5~2.0；Co 0.5~2.0；Ti 1.0~1.5；Ni surpluses；
B) melting
I) intermediate frequency power supply is carried out by working specification；
II) feeding sequence：Nickel, chromium, tungsten, molybdenum, cobalt, ferro-aluminum, ferrotianium；
III) about 1500~1600 DEG C of tapping temperature, and continuous heating in atomization process；
IV) upper nitrogen, atomization of coming out of the stove are led to；
C) atomization process parameter
0.6~1.0mm of circumferential weld；Let slip a remark 5~9mm of diameter；32.0~32.6mm of height of leting slip a remark；20~30kg/ of atomizing pressure
mm2；
2) preparation of flexible wire
A) curing agent adaptable with it, coupling agent are poured into methyl silicone rubber, curing agent accounts for methyl silicone rubber weight
6%~10%, coupling agent accounts for the 1%~5% of methyl silicone rubber weight, and stirs more than 2 minutes, forms binding agent；
B) above-mentioned binding agent is poured into alloy powder, the weight ratio of alloy powder and binding agent is 90~95：5~10 stir
Mix to uniform plastic cement is obtained, the plastic cement being made into answers toughness, and has bright fiber in stretching；
C) plastic cement of preparation is pressed into flexible wire on forcing press, pressing speed is 2~8 ms/min, while disk is put
On reel；
D) flexible wire is placed in dry phase, 110 DEG C ± 10 DEG C are heat-treated 2~3 hours, air cooling.
The preparation method of described new flexible wire used for hot spraying, the particle size range of alloy powder is as follows：0.16mm is sieved
Upper 0；It is not more than 5wt% on 0.056mm sieves；It is not more than 40% on 0.045mm sieves；Remaining is less than 0.045mm.
The preparation method of described new flexible wire used for hot spraying, the diameter range of flexible wire is 4.0~4.3mm.
Advantages of the present invention and beneficial effect are：
1st, the present invention passes through vacuum atomizing process procedure equipment development, matching, the systematic Study of integral device, alloy
The content control of element, impurity element, particularly control of oxygen content etc. is prepared for alloy powder, passes through rubber adhesive body
The selection of system, flexible wire machine-shaping device design, finally prepares flexible wire.The flexible wire material used for hot spraying is just
It is to play a kind of extremely important raising adhesion removed of holding to act on, while also to possess excellent high-temperature heat-resistance performance.
2nd, the implementation that the present invention passes through technical scheme, it is determined that the preparation technology of wire rod, the wire surface coating of development
Coating, the quality of coating is good, meets the use demand of engine, the work of parts can be made by spraying this kind of Novel wire
Ability improves 3~4 times.
3rd, the need for present invention accomplishes long-lived operation under engine component hot conditions, the engineering of material is realized
Change application, meet engine manufacture demand, while other military secrets, civil aircraft and combustion engine can also be promoted the use of, application prospect is wide
It is wealthy.
Brief description of the drawings
Fig. 1 is the preparation technology flow chart of alloy powder of the present invention.
Fig. 2 is the preparation technology flow chart of flexible wire of the present invention.
Fig. 3 (a)-Fig. 3 (b) is the shape appearance figure of flexible wire.
Embodiment
In specific implementation process, the preparation method of the new flexible wire used for hot spraying of the present invention is comprised the following steps that：
1) preparation of alloy powder
As shown in figure 1, technological process prepared by alloy powder is：High pure metal raw material → high pressure nitrogen atomization → screening or
Gas classification → granularity certified products → analysis, detection → vacuum packaging → powder product, the returning charge warp after screening or gas classification
Application of vacuum enters back into high pressure nitrogen atomization.Wherein：
A) dispensing
Alloy powder uses nickel-base alloy, and its chemical composition is shown in Table 1.
Table 1
| Element | Al | Cr | W | Mo | Co | Ti | Ni |
| Wt% | 25 | 3.0 | 1.0 | 1.0 | 1.0 | 1.2 | It is remaining |
B) melting
I) Medium frequency induction melting is used, intermediate frequency power supply is carried out by working specification；
II) feeding sequence：Nickel, chromium, tungsten, molybdenum, cobalt, ferro-aluminum, ferrotianium；
III) about 1550 DEG C of tapping temperature, and continuous heating in atomization process；
IV) upper nitrogen, atomization of coming out of the stove are led to.
C) atomization process parameter
Nitrogen atomization technological parameter is shown in Table 2.
Table 2
| Circumferential weld | Let slip a remark diameter | Let slip a remark highly | Atomizing pressure |
| 0.6~1.0mm | 5~9mm | 32.0~32.6mm | 20~30kg/mm2 |
D) post-process
Post processing includes powder collection, screening, inspection etc., and the particle size range of alloy powder is as follows：0.16mm sieves upper 0；
It is not more than 5wt% on 0.056mm sieves；It is not more than 40% on 0.045mm sieves；Remaining is less than 0.045mm.
2) preparation of flexible wire
As shown in Fig. 2 technological process prepared by flexible wire is：NiAlW powder stocks → kneading raw material is prepared by specification
→ mixing, stirring → stirring kneading → extrusion process → drying → detection → product, stirring add binding agent when mediating.Wherein：
A) 3 are shown in Table by weight dispensing.
Table 3
| Alloy powder | Binding agent |
| 90~95 | 5~10 |
B) curing agent adaptable with it, coupling agent are poured into methyl silicone rubber, curing agent accounts for methyl silicone rubber weight
6%~10%, coupling agent accounts for the 1%~5% of methyl silicone rubber weight, and stirs more than 2 minutes (generally 5~10 minutes),
Form binding agent；
C) above-mentioned binding agent is poured into alloy powder, stirred to uniform plastic cement is obtained, the plastic cement being made into answers toughness,
And have the fiber of light in stretching；
D) plastic cement of preparation is pressed into flexible wire on forcing press, pressing speed is 2~8 ms/min, while disk is put
On special reel；
E) flexible wire is placed in dry phase, 110 DEG C ± 10 DEG C are heat-treated 2~3 hours, air cooling.Such as Fig. 3 (a)-Fig. 3
(b) shown in, from the shape appearance figure of flexible wire, alloy powder is firmly inlayed in a binder, and binding agent accounts for higher volume hundred
Fraction, the diameter range of flexible wire is 4.0~4.3mm.
Embodiment result shows that the flexible wire is to mix and stir alloy powder by methyl silicone rubber, is pressed into flexible wires
Material.The states such as method, the United States, Russia are when solving the spraying feed problems of ceramic fine powder, and the flexible silk material wrapped up with organic shell exists at present
Developed country has been widely used for the operation of advanced flame spraying process.But uniformly mixed and stirred with alloy powder using rubber be made it is soft
Property wire rod is there is not yet spraying operation is easy in precedent, this flexible wire pole, and alloy composition therein is uniform.In spraying process,
Flexible wire is delivered into flame stream high-temperature area by gun slot centre bore by special mechanism, supply compressed air is mixed with flame flow
It is combined, wire rod, which is exceedingly fast, to be melted or react, and injection particle is with supersonic velocity and efficient deposition in workpiece surface.
Claims (1)
1. a kind of preparation method of flexible wire used for hot spraying, it is characterised in that comprise the following steps that：
1) preparation of alloy powder
A) dispensing
Alloy powder uses nickel-base alloy, by weight percentage, and its chemical composition is：Al 20~24；Cr 1.5~4.0；W
0.5~2.0；Mo 0.5~2.0；Co 0.5~2.0；Ti 1.0~1.5；Ni surpluses；
B) melting
I) intermediate frequency power supply is carried out by working specification；
II) feeding sequence：Nickel, chromium, tungsten, molybdenum, cobalt, ferro-aluminum, ferrotianium；
III) 1500~1600 DEG C of tapping temperature, and continuous heating in atomization process；
IV) upper nitrogen, atomization of coming out of the stove are led to；
C) atomization process parameter
0.6~1.0mm of circumferential weld；Let slip a remark 5~9mm of diameter；32.0~32.6mm of height of leting slip a remark；20~30kg/mm of atomizing pressure2；
2) preparation of flexible wire
A) curing agent adaptable with it, coupling agent are poured into methyl silicone rubber, curing agent accounts for the 6% of methyl silicone rubber weight
~10%, coupling agent accounts for the 1%~5% of methyl silicone rubber weight, and stirs more than 2 minutes, forms binding agent；
B) above-mentioned binding agent is poured into alloy powder, the weight ratio of alloy powder and binding agent is 90~95：5~10 stirrings are extremely
Uniform plastic cement is obtained, the plastic cement being made into answers toughness, and has bright fiber in stretching；
C) plastic cement of preparation is pressed into flexible wire on forcing press, pressing speed is 2~8 ms/min, while disk is placed on volume
On cylinder；
D) flexible wire is placed in dry phase, 110 DEG C ± 10 DEG C are heat-treated 2~3 hours, air cooling；
The particle size range of alloy powder is as follows：0.16mm sieves upper 0；It is not more than 5wt% on 0.056mm sieves；It is little on 0.045mm sieves
In 40%；Remaining is that the diameter range of flexible wire is 4.0~4.3mm less than 0.045mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510818616.4A CN105385898B (en) | 2015-11-20 | 2015-11-20 | A kind of preparation method of flexible wire used for hot spraying |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510818616.4A CN105385898B (en) | 2015-11-20 | 2015-11-20 | A kind of preparation method of flexible wire used for hot spraying |
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| Publication Number | Publication Date |
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| CN105385898A CN105385898A (en) | 2016-03-09 |
| CN105385898B true CN105385898B (en) | 2017-09-26 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106591759A (en) * | 2016-11-29 | 2017-04-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method of novel thermal spraying ceramic-based flexible wire |
| CN108735383A (en) * | 2018-05-17 | 2018-11-02 | 合肥浦尔菲电线科技有限公司 | A kind of preparation method of rubber and metal composite flexible wire |
| CN112195371A (en) * | 2020-09-25 | 2021-01-08 | 明德新材料科技(浙江)股份有限公司 | Method for preparing wear-resistant and super-weather-resistant coating by utilizing thermal spraying technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100410415C (en) * | 2005-11-29 | 2008-08-13 | 辽宁省轻工科学研究院 | Flexible wire material for flame spray coating and preparing method therefor |
| CN101177771B (en) * | 2007-12-06 | 2011-06-08 | 北京矿冶研究总院 | Multi-component thermal spraying flexible wire and preparation method thereof |
| CN101768715B (en) * | 2008-12-30 | 2011-09-21 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for preparing antioxidant coating of combustion liner of aeroengine |
| CN101768716B (en) * | 2008-12-30 | 2011-08-31 | 沈阳黎明航空发动机(集团)有限责任公司 | Aeroengine combustor liner with surface coated with oxidation resistant coating |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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