CN104694840B - Power core wire material for preparing crankshaft remanufacturing coating by virtue of electric arc spraying method and application of power core wire material - Google Patents
Power core wire material for preparing crankshaft remanufacturing coating by virtue of electric arc spraying method and application of power core wire material Download PDFInfo
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- CN104694840B CN104694840B CN201310670935.6A CN201310670935A CN104694840B CN 104694840 B CN104694840 B CN 104694840B CN 201310670935 A CN201310670935 A CN 201310670935A CN 104694840 B CN104694840 B CN 104694840B
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Abstract
The invention discloses a power core wire material for preparing a crankshaft remanufacturing coating by virtue of an electric arc spraying method and application of the power core wire material, belonging to the field of remanufacturing of engines. The power core wire material comprises the following components in percentage by mass: 15%-30% of Cr, 0.5%-4% of B, 1.5%-4.5% of C, 6%-10% of Ni, 0.5%-3.5% of Al, 0.05%-0.2% of V and the balance of Fe; the filling rate of the power core wire material is 32%-34%; a strip applied to the skin of the power core wire material is a stainless steel strip. The power core wire material is utilized for preparing the crankshaft remanufacturing coating by virtue of the electric arc spraying method, a crankshaft with very high addition value in an engineering machine engine can be remanufactured, and a waste seriously worn crankshaft of the engine can be recovered to the size of a new shaft; the coating has the hardness similar to the new shaft and can be well matched with a bearing bush for use; the bonding strength of the coating and a matrix is relatively high, so that the falling of the coating in use is avoided, and the service life of the crankshaft is prolonged.
Description
Technical field
The invention belongs to engineering machinery engine re-manufacturing technology field, prepare particularly to one kind arc spray process
Bent axle remanufactures coating powder cored filament material and its application.
Background technology
Remanufacturing is a kind of industry that waste product is implemented with high-tech reparation and transformation, and it is directed to damage or will report
Useless parts, on the basis of the analysis such as performance failure analysis, life appraisal, carry out Rebuilding engineering design, using one are
The related advanced manufacturing technology of row, makes to remanufacture product quality and meets or exceeds new product.
According to statistics, China's engineering machinery assets have reached several trillion, the engineering mechanical device incredible amount scrapping every year, if its
In 10% equipment scrapped can form product using re-manufacturing technology, huge economic benefit and social benefit will be created.Remanufacture
Engineering is the industrialization of waste product high-tech maintenance, is mainly characterized by remanufacturing the quality of product and performance is not less than new product,
Cost is about the 50% of former new product, energy-conservation 60%, saves material 70%, and the negative effect to environment significantly reduces, and meets with " two low one is high "
Developmental pattern for the recycling economy of basic feature.
Typical Components-bent axle in engineering machinery engine, the added value containing is higher, is added value in engineering machinery
High typical parts.But, after waste and old bent axle grinding machine processing fatigue taking away layer is mainly attenuated by traditional repair of crank shaft, then coordinate
The bearing shell of upper thickening, such method as subtracts size method although the service life of bent axle can be extended, but the song after processing
Shaft diameter attenuates, and intensity and resistance to stress strain property all can decline, and reduce its service life.
Content of the invention
Remanufacture coating powder cored filament material and coating preparation side it is contemplated that obtaining one kind electric arc spraying and preparing bent axle
Method.Realize the bent axle very high to added value in engineering machinery engine to remanufacture, the electromotor of waste and old serious wear is bent
Axle returns to new shaft size.This coating has the hardness close with new axle simultaneously, can be good at using cooperatively with bearing shell；In addition
This coating and matrix have higher bond strength, it is to avoid coating shedding in use, extend the service life of bent axle.
A kind of arc spray process prepares the powder cored filament material that bent axle remanufactures coating, powder cored filament material each composition quality percentage
Than for cr:15-30%；B:0.5-4%；C:1.5-4.5%；Ni:6-10%；Al:0.5-3.5%；V:0.05-0.2%；Balance of fe；
Powder cored filament material filling rate is 32-34%.
Band used by above-mentioned powder cored filament material crust is stainless steel band.
Preferably powder cored filament material medicated powder Ingredient percent is: cr:20-30%；B:0.5-2.5%；C:1.5-3.5%；
Ni:7-10%；Al:1.5-3.5%；V:0.1-0.2%；Balance of fe.
Further preferred powder cored filament material medicated powder Ingredient percent is: cr:20-25%；B:1.5-2.5%；C:2.5-
3.5%；Ni:7-9%；Al:1.5-3%；V:0.1-0.15%；Balance of fe.
A kind of the method that bent axle remanufactures coating is prepared using above-mentioned powder cored filament material electric arc spraying process, walk including following
Rapid:
(1) bent axle matrix surface is carried out with pretreatment, bent axle matrix surface is roughened after pre-grinding.
(2) prepare medicated core, by mixing powder, molding, drawing, obtain powder cored filament material；
(3) using electric arc spraying process, powder cored filament material is sprayed on and prepares bent axle on pretreated bent axle matrix and remanufacture
Coating, spraying parameter is: voltage 26-34v；Electric current 160-240a；Spray distance is 150-200mm；Compressed air pressure
For 0.4-0.6mpa.
Wherein, the surface pre-grinding of bent axle matrix described in step (1) uses the sand paper of granularity 180 mesh, then utilizes granularity
Carry out matrix surface sandblasting roughening for 60 mesh Brown Alundum, the air pressure of sandblasting roughening is 0.4-0.6mpa, and sand-blasting gun slew rate degree is
5mm/s.
A diameter of 2.0mm of the powder cored filament material in step (2).
A kind of preferably the method that bent axle remanufactures coating is prepared using above-mentioned powder cored filament material electric arc spraying process, will walk
Suddenly the spraying parameter in (3) is set as: voltage 28-32v；Electric current 180-220a；Spray distance is 180mm；Compressed air
Pressure is 0.4-0.6mpa.
The thickness that in step (3), bent axle remanufactures coating is 0.25-0.5mm.
A kind of coating is remanufactured using the bent axle prepared by said method, this coating is that one kind meets porosity, hardness
The bent axle requiring with bond strength remanufactures reparation, and can be used for waste and old engineering machinery engine bent axle remanufactures reparation
In.
Above-mentioned powder cored filament material is in the application remanufacturing in reparation of bent axle.
A kind of bent axle of the method for the invention preparation remanufactures the high bond strength that reparation has, high rigidity is
The common synergism of its own component is determined.The effect of its each component is respectively as follows:
Fe element: occupy higher mass fraction in the earth's crust, fe base amorphous or nanometer crystal alloy are keeping higher property
While valency ratio, there is excellent anti-wear performance again, used in being very suitable for preparing severe Service Environment, material surface is strong
Change coating；
Cr element: the cr in coating forms the continuous fine and close cr with good corrosion resistance2o3Oxide-film, can significantly improve
The antioxygenic property of ferrous materials, increases corrosion stability, is the addition element being widely used in special steel；
B element: add appropriate b can reduce Grain Boundary Chemistry energy in ferrous alloy, strengthen intercrystalline adhesion, refinement
Crystal grain, improving coating hardness increases wearability；
C element: c is the less metalloid element of atomic radius, and the addition of c makes Elements Atom radius in alloy system divide
Cloth is more irregular, increases the randomness of whole system.C element and cr, fe element have stronger affinity so that system
The diffusive migration of middle metalloid element is suppressed, thus effectively hindering or delaying fe in crystallization process23(c,b)6In crystal
The precipitation of phase, improves the Forming ability of amorphous phase in amorphous/nanocrystalline system.Improve the wear-resisting skeleton of coating, improve coating
Hardness, strengthens coating abrasion performance；
V element: vanadium is the excellent deoxidizer of steel.Vanadium can thinning microstructure crystal grain, raising intensity and toughness.Vanadium is formed with carbon
Carbide, can improve hydrogen attack resistance at high temperature under high pressure.
Ni, al element: in spraying process, ni mixes the alloy phase occurring exothermic reaction to be formed between alni with al, right
Substrate material surface or established coating surface are fully heated, or even realize the metallurgical binding on microcosmic, are conducive to carrying
The bond strength of high coating.
Although each element in coating is all conventional element, the excellent hardness of coating and bond strength are to pass through
Synergism between each element determines, is not that single-element is determined, is not only by limited number of time test
Can be obtained by.Content optimization according to ni and al in prime coat silk material and then determine the content of ni and al, then passes through
Adjustment powder cored filament material in b constituent content, optimize coating case hardness, then by select from numerous elements fe, cr, c,
V simultaneously carries out the collaborative of content and optimizes, and has prepared the hot spraying powder core-wire material that bent axle remanufactures, has obtained and meet hole simultaneously
The coating that rate, hardness and bond strength require, thus reach the purpose that bent axle remanufactures.
Present invention arc spray process carries out engineering machinery engine bent axle and remanufactures to have any different repairing in general maintenance
Multiple, after waste and old bent axle grinding machine processing fatigue taking away layer is mainly attenuated by traditional repair of crank shaft, then coordinate the bearing shell of thickening,
Such method as subtracts size method although the service life of bent axle can be extended, but the bent axle diameter after processing attenuates, by force
Degree and resistance to stress strain property all can decline, and reduce its service life；Adopt arc spray process to grinding machine in the present invention plus
Bent axle after work carries out increasing size method and remanufactures, and has both recovered the size of bent axle, and has not reduced the performance of bent axle, but also permissible
Use cooperatively with standard bearing, obtain low porosity, high rigidity, the coating of high bond strength, extend the clothes remanufacturing bent axle
In the labour life-span, reduce the cost of product life cycels.
And, using the method carry out engineering machinery engine bent axle remanufacture at utmost reduce bent axle remanufacture plus
The use of new material during work, therefore decreases and manufactures the energy resource consumption producing in chain and disposal of pollutants；Remanufacture process
Avoid energy resource consumption and the pollutant emission produced by take-back model that tradition melts down smelting；Remanufacture product reliability and
Environmental protection index gets a promotion, and same reduction is discharged and energy consumption.Adapt to the environmental protection concept of environment sustainable development.
Brief description
The bent axle of Fig. 1: embodiment 1-14 preparation remanufactures the firmness change rule of coating；
The bent axle of Fig. 2: embodiment 1-14 preparation remanufactures the bond strength Changing Pattern of coating；
The bent axle of Fig. 3: embodiment 1-14 preparation remanufactures the porosity hardening rule of coating；
The bent axle of Fig. 4: embodiment 14 preparation remanufactures the section microphotograph of coating；
The bent axle of Fig. 5: embodiment 14 preparation remanufactures the front microphotograph of coating；
Specific embodiment
It is further elucidated with substantive distinguishing features and the remarkable advantage of the present invention below by embodiment, the present invention only limits to by no means
In the embodiment stated.
In each embodiment, same section is as described below:
1. in embodiment, powder cored filament material crust selects specification is 12mm for 0.4 × 12mm(width, and thickness is 0.4mm)
Spcc stainless steel band, powder cored filament material medicated powder composition illustrates in an embodiment, and selected powder crosses 60 mesh sieve respectively, will be selected
Various powder put into mixing 2 hours in mixed powder machine, then add the mixed powder obtaining in the steel band groove of u shape, u shape groove is closed
Mouthful, so that medicated powder is wrapped up wherein, filling rate is 32-34%.Then respectively through wire drawing die, by road drawing, tube reducing, finally make it straight
Footpath reaches 2.0mm, obtains bent axle and remanufacture using arc spraying powder core wire material.
2. matrix selects a kind of bent axle steel matrix, and that is, 42crmo steel matrix (20 × 20 × 5mm, φ 25 × 60mm) is through granularity
After 180 mesh sand paper pre-grinding, it is 60 mesh Brown Alundum using granularity, in gas pressure 0.4-0.6mpa, sand-blasting gun slew rate degree 5mm/s
Under conditions of carry out sandblasting roughening；
3. spraying parameter illustrates in an embodiment, and experiment of hardness is less than 50 μ with each coating thickness of coating
M, sprays to 500 μm several times respectively；Bonding strength test used coating preparation technology parameter in the same embodiment and Lip river
Family name's experiment of hardness preparation technology of coating parameter is identical, and each coating thickness is less than 50 μm, sprays to 250 μm several times.
Embodiment 1
According to powder cored filament material drug core component mass percent it is: cr:15wt.%；B:4wt.%；C:4.5wt.%；Ni:
6wt.%；Al:0.5wt.%；V:0.05wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used
Parameter: voltage 26-28v；Electric current 160-180a；Spray distance 150mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 2
According to powder cored filament material drug core component mass percent it is: cr:15wt.%；B:4wt.%；C:4.5wt.%；Ni:
6wt.%；Al:0.5wt.%；V:0.05wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used
Parameter: voltage 28-32v；Electric current 180-220a；Spray distance 180mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 3
According to powder cored filament material drug core component mass percent it is: cr:15wt.%；B:4wt.%；C:4.5wt.%；Ni:
6wt.%；Al:0.5wt.%；V:0.05wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used
Parameter: voltage 32-34v；Electric current 220-240a；Spray distance 200mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 4
According to powder cored filament material drug core component mass percent it is: cr:20wt.%；B:2.5wt.%；C:3.5wt.%；Ni:
7wt.%；Al:1.5wt.%；V:0.1wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used ginseng
Number: voltage 26-28v；Electric current 160-180a；Spray distance 150mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 5
According to powder cored filament material drug core component mass percent it is: cr:20wt.%；B:2.5wt.%；C:3.5wt.%；Ni:
7wt.%；Al:1.5wt.%；V:0.1wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used ginseng
Number: voltage 28-32v；Electric current 180-220a；Spray distance 180mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 6
According to powder cored filament material drug core component mass percent it is: cr:20wt.%；B:2.5wt.%；C:3.5wt.%；Ni:
7wt.%；Al:1.5wt.%；V:0.1wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used ginseng
Number: voltage 32-34v；Electric current 220-240a；Spray distance 200mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 7
According to powder cored filament material drug core component mass percent it is: cr:25wt.%；B:1.5wt.%；C:2.5wt.%；Ni:
9wt.%；Al:3wt.%；V:0.15wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used ginseng
Number: voltage 26-28v；Electric current 160-180a；Spray distance 150mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 8
According to powder cored filament material drug core component mass percent it is: cr:25wt.%；B:1.5wt.%；C:2.5wt.%；Ni:
9wt.%；Al:3wt.%；V:0.15wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used ginseng
Number: voltage 28-32v；Electric current 180-220a；Spray distance 180mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 9
According to powder cored filament material drug core component mass percent it is: cr:25wt.%；B:1.5wt.%；C:2.5wt.%；Ni:
9wt.%；Al:3wt.%；V:0.15wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used ginseng
Number: voltage 32-34v；Electric current 220-240a；Spray distance 200mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 10
According to powder cored filament material drug core component mass percent it is: cr:30wt.%；B:0.5wt.%；C:1.5wt.%；Ni:
10wt.%；Al:3.5wt.%；V:0.2wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used
Parameter: voltage 26-28v；Electric current 160-180a；Spray distance 150mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 11
According to powder cored filament material drug core component mass percent it is: cr:30wt.%；B:0.5wt.%c:1.5wt.%；Ni:
10wt.%；Al:3.5wt.%；V:0.2wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used
Parameter: voltage 28-32v；Electric current 180-220a；Spray distance 180mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 12
According to powder cored filament material drug core component mass percent it is: cr:30wt.%；B:0.5wt.%；C:1.5wt.%；Ni:
10wt.%；Al:3.5wt.%；V:0.2wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used
Parameter: voltage 32-34v；Electric current 220-240a；Spray distance 200mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 13
According to powder cored filament material drug core component mass percent it is: cr:23wt.%；B:2wt.%；C:3.2wt.%；Ni:
8wt.%；Al:2wt.%；V:0.1wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used ginseng
Number: voltage 28-32v；Electric current 180-220a；Spray distance 180mm；Compressed air pressure 0.4-0.6mpa.
Embodiment 14
According to powder cored filament material drug core component mass percent it is: cr:21wt.%；B:1.6wt.%；C:3wt.%；Ni:
8wt.%；Al:2wt.%；V:0.1wt.%；Fe: surplus.Filling rate: 33%, roll powder cored filament material.Prepares coating spraying used ginseng
Number: voltage 28-32v；Electric current 180-220a；Spray distance 180mm；Compressed air pressure 0.4-0.6mpa.
Prepared by each embodiment, coating performance detection is as described below:
1. coating prepared by embodiment carries out in rockwell hardness testing test, according to gb/t230.1-2009 national standard,
Using the manual Rockwell apparatus of hr-150a, load 150kgf, it is chosen for 120 ° of diamond penetrators, take 5 points of Rockwell hardness average
Value, is shown in Table 1.
2. coating prepared by pair embodiment is combined strength test, according to astm c633-79 (again checking and approving within 1993)
Carry out described in standard, bonding agent selects import fm-1000 high temperature bond glue, colloid proportioning provides according to description, and through 190
DEG C/2.5h solidification after carry out bond strength test, take the meansigma methodss of 5 samples, be shown in Table 1.
3. prepared by pair embodiment, coating carries out analysis of porosity, using image pro plus6.0 image analysis software,
Analyze coating porosity using image method, to evaluate coating consistency.Five sections to each embodiment manufactured coating respectively
Metallograph is calculated, and takes its meansigma methods, is shown in Table 1.
Embodiment 1-14 coating microhardness Changing Pattern is shown in Fig. 1, and embodiment 1-14 anchoring strength of coating Changing Pattern is shown in
Fig. 2, embodiment 1-14 coating porosity Changing Pattern is shown in Fig. 3, and the section microphotograph of embodiment 14 coating is shown in Fig. 4, Fig. 5；Logical
Cross and consider the porosity of embodiment 1-14 coating, bond strength, Rockwell hardness, powder cored filament material medicated powder composition is carried out progressively
Optimize, finally obtain low porosity, high rigidity, the coating of high bond strength, be applied to making again of engineering machinery engine bent axle
Make, to extend the service life of bent axle.
The hardness of table 1 embodiment 1-14 coating, porosity and bond strength
Claims (11)
1. a kind of arc spray process prepares the powder cored filament material that bent axle remanufactures coating, and described powder cored filament material is by medicated core with outward
Skin forms it is characterised in that the mass percent of each composition of described medicated core is: cr:15-30%；B:0.5-4%；C:1.5-4.5%；
Ni:6-10%；Al:0.5-3.5%；V:0.05-0.2%；Balance of fe；Flux cored filler rate is 32-34%.
2. a kind of arc spray process according to claim 1 prepares the powder cored filament material that bent axle remanufactures coating, and it is special
Levy and be, band used by described powder cored filament material crust is stainless steel band.
3. a kind of arc spray process according to claim 1 prepares the powder cored filament material that bent axle remanufactures coating, and it is special
Levy and be, the mass percent of each composition of powder cored filament material medicated core is: cr:20-30%；B:0.5-2.5%；C:1.5-3.5%；Ni:7-
10%；Al:1.5-3.5%；V:0.1-0.2%；Balance of fe.
4. a kind of arc spray process according to claim 1 prepares the powder cored filament material that bent axle remanufactures coating, and it is special
Levy and be, the mass percent of each composition of powder cored filament material medicated core is: cr:20-25%；B:1.5-2.5%；C:2.5-3.5%；Ni:7-
9%；Al:1.5-3%；V:0.1-0.15%；Balance of fe.
5. the powder cored filament material electric arc spraying process described in a kind of any one using claim 1-4 is prepared bent axle and is remanufactured coating
Method it is characterised in that concrete grammar comprises the steps:
(1) bent axle matrix surface is carried out with pretreatment, bent axle matrix surface is roughened after pre-grinding；
(2) prepare medicated core, by mixing powder, molding, drawing, obtain powder cored filament material；
(3) using electric arc spraying process, powder cored filament material is sprayed on and prepares bent axle on pretreated bent axle matrix and remanufacture painting
Layer, spraying parameter is: voltage 26-34v；Electric current 160-240a；Spray distance is 150-200mm；Compressed air pressure is
0.4-0.6mpa.
6. according to claim 5 method it is characterised in that the surface pre-grinding of bent axle matrix described in step (1) uses grain
Spend the sand paper of 180 mesh, then carry out matrix surface sandblasting roughening using granularity for 60 mesh Brown Alundum, the air pressure of sandblasting roughening is
0.4-0.6mpa, sand-blasting gun slew rate degree is 5mm/s.
7. according to claim 5 method it is characterised in that the spraying parameter described in step (3) is set as: voltage
28-32v；Electric current 180-220a；Spray distance is 180mm；Compressed air pressure is 0.4-0.6mpa.
8. method according to claim 5 is it is characterised in that a diameter of 2.0mm of powder cored filament material described in step (2).
9. method according to claim 5 is it is characterised in that the thickness that in step (3), bent axle remanufactures coating is 0.25-
0.5mm.
10. a kind of coating is remanufactured using the bent axle prepared by the method for claim 5.
Powder cored filament material described in 11. any one of claim 1-4 remanufactures the application in reparation in bent axle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310670935.6A CN104694840B (en) | 2013-12-10 | 2013-12-10 | Power core wire material for preparing crankshaft remanufacturing coating by virtue of electric arc spraying method and application of power core wire material |
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| CN201310670935.6A CN104694840B (en) | 2013-12-10 | 2013-12-10 | Power core wire material for preparing crankshaft remanufacturing coating by virtue of electric arc spraying method and application of power core wire material |
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| CN104694840A CN104694840A (en) | 2015-06-10 |
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| CA3003048C (en) * | 2015-11-10 | 2023-01-03 | Scoperta, Inc. | Oxidation controlled twin wire arc spray materials |
| ES2898832T3 (en) * | 2016-03-22 | 2022-03-09 | Oerlikon Metco Us Inc | Fully readable thermal spray coating |
| CN107699843B (en) * | 2017-09-21 | 2019-10-15 | 河海大学 | A kind of powder cored filament material and its preparation method and application preparing high content of amorphous coating |
| CN108486523A (en) * | 2018-04-28 | 2018-09-04 | 蒋春霞 | A kind of refractory brick mould remanufactures restorative procedure |
| US11939646B2 (en) | 2018-10-26 | 2024-03-26 | Oerlikon Metco (Us) Inc. | Corrosion and wear resistant nickel based alloys |
| CN110699627A (en) * | 2019-11-01 | 2020-01-17 | 广西大学 | Corrosion-resistant electric arc spraying powder core wire material and coating preparation method |
| CN110936055A (en) * | 2019-12-13 | 2020-03-31 | 中机智能装备创新研究院(宁波)有限公司 | Seamless flux-cored Babbitt alloy wire and preparation method and application thereof |
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