CN107881368A - A kind of blower fan - Google Patents
A kind of blower fan Download PDFInfo
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- CN107881368A CN107881368A CN201711182076.0A CN201711182076A CN107881368A CN 107881368 A CN107881368 A CN 107881368A CN 201711182076 A CN201711182076 A CN 201711182076A CN 107881368 A CN107881368 A CN 107881368A
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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
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0005—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with at least one oxide and at least one of carbides, nitrides, borides or silicides as the main non-metallic constituents
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- 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
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- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The present invention relates to a kind of blower fan, belongs to mechanical material field.Blower fan of the present invention, which includes main body and the cobalt-based alloy layer coated in body surfaces, the cobalt-based alloy layer made of steel alloy, includes the composition of following parts by weight：60 80 parts of Co based alloys, SiO210 15 parts, ZrO210 15 20 parts of part, nanometer WC10.Blower fan of the present invention uses the steel of compatibility, and Ti elements and Y are added in steel2O3, and by both ratios of control, steel strength can be increased, so as to lift the intensity of blower fan of the present invention；Meanwhile blower fan by adding cleanser, and uses continuous annealing process in preparation process, and coating cobalt-based alloy layer, obtained blower fan intensity can be made high and wear-resistant.
Description
Invention field
The present invention relates to a kind of blower fan, belongs to mechanical material field.
Background technology
Blower fan is widely used in the ventilation, dust discharge and cooling of factory, mine, tunnel, cooling tower, vehicle, ship and building；
The ventilation of boiler and industrial furnace and air inducing；Cooling and ventilation in the apparatus of air conditioning and domestic electric appliance；The baking of cereal
Do and select and recommend；Inflation and propulsion of wind-tunnel wind regime and aircushion vehicle etc..The operation principle of blower fan and turbocompressor are essentially identical, only
It is due to that gas flow rate is relatively low, pressure change is little, typically the change without the concern for gas specific volume, i.e., using gas as can not
Compression fluid processing.
But in actual use, because production, the change of technique etc., it is necessary to often adjust the flow of gas, pressure,
Temperature, blower fan is easy to wear in use to cause shortening for life-span, and because operating temperature is higher, in use intolerant to
Reduction that is hot then easily causing service efficiency.
The content of the invention
There is above mentioned problem in the present invention, it is proposed that a kind of to have excellent heat resistance, rub resistance for existing technology
The blower fan of performance and high intensity.
The purpose of the present invention can be realized by following technical solution：The blower fan include made of steel alloy main body with
And the cobalt-based alloy layer coated in body surfaces, the cobalt-based alloy layer include the composition of following parts by weight：Co based alloys 60-
80 parts, SiO210-15 parts, ZrO210-15 parts, nanometer WC10-20 parts.The Co based alloys include the group of following mass percent
Point：C：0.79-0.85%, P：0.008-0.01%, Cr：24.7-25.2%, S：0.001-0.0015%, Fe：0.3-
0.32%, Si：0.4-0.42%, Mn：0.01-0.02%, W：7.5-8.0%, Ni：10.5-10.8%, surplus Co.Laser
Cladding refers to that place selected coating material on by cladding matrix surface with different adding material modes is allowed to through laser irradiation
Melted simultaneously with matrix surface a thin layer, and quickly formation dilution factor is extremely low after solidification, is applied with matrix into the surface of metallurgical binding
Layer, laser melting coating can significantly improve wear-resisting, anti-corrosion, heat-resisting, the anti-oxidant and electrical characteristic of substrate surface, change so as to reach surface
Property or the purpose of reparation.In laser cladding Co-based alloy layer of the present invention, nanometer WC and the Co based alloy of addition melt to be formed it is white
The point-like hardening constituent of the netted and Dispersed precipitate of light tone band, while material surface hardness is lifted, also enhance the resistance to of material
Grind performance.Meanwhile, it is capable to obtained blower fan abrasion resistance properties is had greatly improved, and due to metal oxide SiO2、ZrO2
Wetting action, can cause eroded area it is steady, more in the form of abrasive wear occur, reduce adhesive wear.
In a kind of above-mentioned blower fan, the steel alloy includes the component of following mass fraction：C：0.08-0.12%, Cr：
8.5-9.0%, W：2.5-2.8%, V：0.23-0.26%, Ta：0.16-0.20%, Mn：0.4-0.5%, Y2O3：0.12-
0.20%, surplus Fe.
Blower fan of the present invention is made of steel, and the Cr contents in steel are 8.5-9.0%, is high chrome, and high chrome has
There are higher obdurability, creep-resistant property, and good resistance to high temperature oxidation and corrosion resistance, therefore the present invention is using above-mentioned
The steel of species.
The present invention adds W, W energy high temperature resistants in steel, and is dissolved in meeting and carbon in steel and forms tungsten carbide, it is possible to increase steel
Rigidity, meanwhile, tungsten can improve the hardening heat of steel, and the grain growth trend of steel, W can also strengthen steel during so as to reduce quenching
Fractography granular, resistance spend softening freely.
Secondly, in blower fan of the present invention, V being also added into steel, V addition can prevent growing up for austenite crystal,
Meanwhile V has the ability of depickling deoxygenation, therefore, V is added in steel in steel, the section crystallization of steel can be made solid, also,
V is added in steel, can improve hardening capacity, during high temperature Quench heating, its grain growth can be prevented, therefore contribute to the crystallization of steel
Organize granular.Ta addition can improve the stability of the fusing point of alloy, elevated temperature strength, carbide and Y phases, so as to improve steel
Quality and mechanical performance.
Furthermore in blower fan of the present invention, Gd is also added into steel, because rare earth Gd is mainly enriched in steel Ovshinsky
The grain boundaries of body crystal grain, make the structure and composition of crystal boundary change, and serve invigoration effect to crystal boundary, improve crystal boundary
Energy；Meanwhile although solid solubility of the rare earth Gd in steel is smaller, due to differing greatly for atomic radius, be dissolved into
Rare earth element in steel can cause strong distortion of lattice, so that matrix is strengthened, hardness is also just improved.
In blower fan of the present invention, the mass ratio of Y element and Ti elements is 0.21-0.25.In blower fan of the present invention, by adding
Enter rare earth element y, the influence of element sulphur in steel can be reduced, while the shape of residual field trash, mainly manganese sulfide can be changed, from
And improve the intensity of steel.The present invention is also added into Ti elements, and element Y, Ti, the O dissolved after heat treatment in matrix is combined shape
Into more stable Y-Ti-0 precipitated phases, strong dispersion-strengthened action is played, its particle is tiny, can increase steel strength,
So as to lift the intensity of blower fan of the present invention.The present invention uses the Ti elements and Y element of aforementioned proportion, can make the Y-Ti-0 of generation
Precipitated phase granularity is smaller, and stability is higher.
It is another object of the present invention to provide a kind of preparation method of blower fan, the preparation method includes following step
Suddenly：
Melting：The component for preparing steel is added in vacuum drying oven, vacuumizes and is warming up to 800-890 DEG C of progress melting；
Refining：It is passed through argon gas to be refined, and adds cleanser, skims and steel are poured into a mould to obtain after coming out of the stove；
Heat treatment：Steel are passed through into continuous annealing treatment, blower fan blank is obtained after Quenching Treatment and temper；
Coating coats：Blower fan is obtained in blower fan blank surface coating cobalt-based alloy layer using laser melting coating.
In a kind of above-mentioned preparation method of blower fan, the quality of the cleanser is the 0.5-1.7% of steel product quality, described
Cleanser is 12CaO.7Al2O3.By adding cleanser in the preparation method of blower fan of the present invention, the addition of one side cleanser carries
The high deoxidizing capacity of deoxidant element, another aspect cleanser can directly adsorb dissolving field trash and carry it into top slag.And this
Cleanser is 12CaO.7Al in invention2O3, and the interfacial tension very little between liquid phase steel impurity inclusion, contact angle very little, only
Agent absorbs the process that field trash is a spontaneous progress.Therefore, will be by as long as field trash and cleanser slag drop collide
Cleanser absorption takes away molten steel.
Preferably, cleanser 12CaO.7Al2O3 of the present invention granularity is 70-80 μm.It is small under identical cleanser dosage
Particulate burning purifying agent can obtain preferably clean-up effect.But it is not that the smaller clean-up effect of cleanser particle is better, because
Cleanser is substantially the small slag drop being present in molten steel, and its effect is the Adsorption field trash in floating-upward process, but
Once the smaller cleanser of granularity can not discharge from molten steel in itself, it as a result can not only play a part of cleaning molten steel, cleanser
The large inclusionses residued in steel itself are will also become, therefore the present invention is using the cleanser of above-mentioned quality and granularity.
In a kind of above-mentioned preparation method of blower fan, the continuous annealing process specifically comprises the following steps：Annealing soak
Temperature is 875-885 DEG C, and the annealing soak time is 120-130s, and slow cooling speed is 5-6 DEG C/s, and slow cooling temperature is 705-710 DEG C,
Temperature retention time is 300-305s.Continuous annealing process is that the soaking temperature that steel is heated to above to more than Acl carries out isothermal treatment for short time,
Austenitizing is uneven, undissolved carbide, or the non-spontaneous forming core in austenite middle and high concentration carbon segregation area is formed, so as to promote ball
Globular cementite forming core.It is incubated in the slow cooling temperature of a little higher than perlitic transformation, the lamellar pearlite in tissue is gradually broken
Corynebacterium, spheroidite are formed, so that material obtains preferable spheroidal structure.In the preparation method of blower fan of the present invention,
Using the continuous annealing process of said temperature scope, can make to obtain inside steel has preferable spheroidal structure, so as to ensure wind
The intensity of machine.Too low or too high soaking temperature is unfavorable for nodularization, longer soaking time, slower slow cooling speed, longer
Temperature retention time contributes to the formation of spheroidite, and slow cooling temperature is too low, and cementite can not be broken completely, and slow cooling temperature is too high,
Cementite can be assembled, and can not obtain spheroidite.
In a kind of above-mentioned preparation method of blower fan, the quenching and temper comprise the following steps：Hardening heat is
850-855 DEG C of cool time is 30-40min, and temperature is 475 DEG C~525 DEG C, and tempering time is 45~60min.Through 850-
The tissue of steel is mainly lath martensite in the present invention after 855 DEG C of oil quenchings, when 45~60min is tempered at 475~525 DEG C, steel
Even tissue is tiny, and quenching structure is fully changed into tempered sorbite, and carbide dispersion is distributed in matrix, can make the present invention
Blower fan has preferable intensity and plasticity.
Compared with prior art, the invention has the advantages that：
1st, blower fan of the present invention uses the steel of compatibility, and Ti elements and Y are added in steel2O3, and pass through both control
Ratio, steel strength can be increased, so as to lift the intensity of blower fan of the present invention；
2nd, blower fan of the present invention by adding cleanser, and uses continuous annealing process in preparation process, and coating
Cobalt-based alloy layer, obtained blower fan intensity can be made high and wear-resistant；
3rd, blower fan of the present invention uses special steel, and configures rational preparation method, so as to get blower fan intensity it is high, it is resistance to
Abrasion, service life are long.
Embodiment
It is the embodiment of the present invention below, technical scheme is further described, but the present invention
It is not limited to these embodiments.
Embodiment 1
Melting：Steel alloy is added in vacuum drying oven, vacuumizes and is warming up to the molten steel of 800 DEG C of progress meltings, wherein closing
Golden ladle includes the component of following mass fraction：C：0.08%, Cr：8.5%, W：2.5%, V：0.23%, Ta：0.16%, Mn：
0.4%, Y2O3：0.12%, surplus Fe；
Refining：It is passed through argon gas to be refined, and adds cleanser, skims and blower fan blank is poured into a mould to obtain after coming out of the stove, cleanser
Quality is the 0.5% of molten steel gross mass, cleanser 12CaO.7Al2O3, granularity is 70 μm；
Heat treatment：Blower fan blank is passed through into continuous annealing treatment successively, after Quenching Treatment and temper blower fan half into
Product, wherein, continuous annealing process specifically comprises the following steps：Annealing soak temperature is 875 DEG C, and the annealing soak time is 120s,
Slow cooling speed is 5 DEG C/s, and slow cooling temperature is 705 DEG C, temperature retention time 300s；Hardening heat is
30min, temperature are 475 DEG C, tempering time 45min；
Coating coats：Blower fan, cobalt-based alloy layer are obtained in blower fan surface of semi-finished coating cobalt-based alloy layer using laser melting coating
Include the composition of following parts by weight：60 parts of Co based alloys, SiO210 parts, ZrO210 part, nanometer WC10 parts；Wherein, Co based alloys
Include the component of following mass percent：C：0.79%, P：0.008%, Cr：24.7%, S：0.001%, Fe：0.3%, Si：
0.4%, Mn：0.01%, W：7.5%, Ni：10.5%, surplus Co.
Embodiment 2
Melting：Steel alloy is added in vacuum drying oven, vacuumizes and is warming up to the molten steel of 825 DEG C of progress meltings, wherein closing
Golden ladle includes the component of following mass fraction：C：0.09%, Cr：8.6%, W：2.55%, V：0.24%, Ta：0.17%, Mn：
0.42%, Y2O3：0.14%, surplus Fe；
Refining：It is passed through argon gas to be refined, and adds cleanser, skims and blower fan blank is poured into a mould to obtain after coming out of the stove, cleanser
Quality is the 0.8% of molten steel gross mass, cleanser 12CaO.7Al2O3, granularity is 72 μm；
Heat treatment：Blower fan blank is passed through into continuous annealing treatment successively, after Quenching Treatment and temper blower fan half into
Product, wherein, continuous annealing process specifically comprises the following steps：Annealing soak temperature is 878 DEG C, and the annealing soak time is 122s,
Slow cooling speed is 5.2 DEG C/s, and slow cooling temperature is 706 DEG C, temperature retention time 302s；Hardening heat is
32min, temperature are 485 DEG C, tempering time 49min；
Coating coats：Blower fan, cobalt-based alloy layer are obtained in blower fan surface of semi-finished coating cobalt-based alloy layer using laser melting coating
Include the composition of following parts by weight：65 parts of Co based alloys, SiO211 parts, ZrO211 part, nanometer WC11 parts；Wherein, Co based alloys
Include the component of following mass percent：C：0.80%, P：0.0085%, Cr：24.9%, S：0.0011%, Fe：0.305%,
Si：0.405%, Mn：0.012%, W：7.6%, Ni：10.6%, surplus Co.
Embodiment 3
Melting：Steel alloy is added in vacuum drying oven, vacuumizes and is warming up to the molten steel of 845 DEG C of progress meltings, wherein closing
Golden ladle includes the component of following mass fraction：C：0.1%, Cr：8.75%, W：2.65%, V：0.25%, Ta：0.18%, Mn：
0.45%, Y2O3：0.16%, surplus Fe；
Refining：It is passed through argon gas to be refined, and adds cleanser, skims and blower fan blank is poured into a mould to obtain after coming out of the stove, cleanser
Quality is the 1.1% of molten steel gross mass, cleanser 12CaO.7Al2O3, granularity is 75 μm；
Heat treatment：Blower fan blank is passed through into continuous annealing treatment successively, after Quenching Treatment and temper blower fan half into
Product, wherein, continuous annealing process specifically comprises the following steps：Annealing soak temperature is 880 DEG C, and the annealing soak time is 125s,
Slow cooling speed is 5.5 DEG C/s, and slow cooling temperature is 707 DEG C, temperature retention time 303s；Hardening heat is
35min, temperature are 500 DEG C, tempering time 52min；
Coating coats：Blower fan, cobalt-based alloy layer are obtained in blower fan surface of semi-finished coating cobalt-based alloy layer using laser melting coating
Include the composition of following parts by weight：70 parts of Co based alloys, SiO212 parts, ZrO213 part, nanometer WC15 parts；Wherein, Co based alloys
Include the component of following mass percent：C：0.82%, P：0.009%, Cr：24.9%, S：0.0013%, Fe：0.31%,
Si：0.41%, Mn：0.015%, W：7.75%, Ni：10.7%, surplus Co.
Embodiment 4
Melting：Steel alloy is added in vacuum drying oven, vacuumizes and is warming up to the molten steel of 860 DEG C of progress meltings, wherein closing
Golden ladle includes the component of following mass fraction：C：0.11%, Cr：8.85%, W：2.7%, V：0.25%, Ta：0.19%, Mn：
0.48%, Y2O3：0.18%, surplus Fe；
Refining：It is passed through argon gas to be refined, and adds cleanser, skims and blower fan blank is poured into a mould to obtain after coming out of the stove, cleanser
Quality is the 1.4% of molten steel gross mass, cleanser 12CaO.7Al2O3, granularity is 78 μm；
Heat treatment：Blower fan blank is passed through into continuous annealing treatment successively, after Quenching Treatment and temper blower fan half into
Product, wherein, continuous annealing process specifically comprises the following steps：Annealing soak temperature is 882 DEG C, and the annealing soak time is 128s,
Slow cooling speed is 5.8 DEG C/s, and slow cooling temperature is 708 DEG C, temperature retention time 304s；Hardening heat is
38min, temperature are 510 DEG C, tempering time 55min；
Coating coats：Blower fan, cobalt-based alloy layer are obtained in blower fan surface of semi-finished coating cobalt-based alloy layer using laser melting coating
Include the composition of following parts by weight：72 parts of Co based alloys, SiO213 parts, ZrO214 part, nanometer WC17 parts；Wherein, Co based alloys
Include the component of following mass percent：C：0.0.84%, P：0.0095%, Cr：25.0%, S：0.0014%, Fe：
0.315%, Si：0.415%, Mn：0.018%, W：7.85%, Ni：10.75%, surplus Co.
Embodiment 5
Melting：Steel alloy is added in vacuum drying oven, vacuumizes and is warming up to the molten steel of 890 DEG C of progress meltings, wherein closing
Golden ladle includes the component of following mass fraction：C：0.12%, Cr：9.0%, W：2.8%, V：0.26%, Ta：0.20%, Mn：
0.5%, Y2O3：0.20%, surplus Fe；
Refining：It is passed through argon gas to be refined, and adds cleanser, skims and blower fan blank is poured into a mould to obtain after coming out of the stove, cleanser
Quality is the 1.7% of molten steel gross mass, cleanser 12CaO.7Al2O3, granularity is 80 μm；
Heat treatment：Blower fan blank is passed through into continuous annealing treatment successively, after Quenching Treatment and temper blower fan half into
Product, wherein, continuous annealing process specifically comprises the following steps：Annealing soak temperature is 885 DEG C, and the annealing soak time is 130s,
Slow cooling speed is 6 DEG C/s, and slow cooling temperature is 710 DEG C, temperature retention time 305s；Hardening heat is
40min, temperature are 525 DEG C, tempering time 60min；
Coating coats：Blower fan, cobalt-based alloy layer are obtained in blower fan surface of semi-finished coating cobalt-based alloy layer using laser melting coating
Include the composition of following parts by weight：80 parts of Co based alloys, SiO215 parts, ZrO215 part, nanometer WC15 parts；Wherein, Co based alloys
Include the component of following mass percent：C：0.85%, P：0.01%, Cr：25.2%, S：0.0015%, Fe：0.32%, Si：
0.42%, Mn：0.02%, W：8.0%, Ni：10.8%, surplus Co.
Comparative example 1
With differing only in for embodiment 1, the comparative example blower fan is made of commercial alloys steel, other and the phase of embodiment 1
Together, here is omitted.
Comparative example 2
With differing only in for embodiment 1, the alloy steel surface of the comparative example blower fan does not coat cobalt-based alloy layer, other
Same as Example 1, here is omitted.
Comparative example 3
With differing only in for embodiment 1, Y is not contained in the alloy steel material of the comparative example blower fan2O3, other and reality
Apply that example 1 is identical, and here is omitted.
Comparative example 4
With differing only in for embodiment 1, the comparative example blower fan is in preparation process without adding cleanser, other and reality
Apply that example 1 is identical, and here is omitted.
Comparative example 5
With differing only in for embodiment 1, the comparative example blower fan uses ordinary heat treatment in preparation process, other
Same as Example 1, here is omitted.
Blower fan progressive in above-described embodiment 1-5 and comparative example 1-5 can be tested, test result is as shown in table 1.
Table 1：Blower fan the performance test results in embodiment 1-5 and comparative example 1-5
Blower fan of the present invention uses the steel of compatibility it can be seen from the above results, and add in steel Ti elements and
Y2O3, and by both ratios of control, steel strength can be increased, so as to lift the intensity of blower fan of the present invention；Meanwhile wind
Machine by adding cleanser, and uses continuous annealing process in preparation process, and coating cobalt-based alloy layer, can make
Obtained blower fan intensity is high, and wear-resistant.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be substituted using similar mode, but simultaneously
Do not deviate by the spirit of the present invention or surmount scope defined in appended claims.
It is skilled to this area although having been made a detailed description to the present invention and being cited some specific embodiments
For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.
Claims (9)
1. a kind of blower fan, it is characterised in that the blower fan is including the main body made of steel alloy and coated in body surfaces
Cobalt-based alloy layer, the cobalt-based alloy layer include the composition of following parts by weight：Co based alloy 60-80 parts, SiO210-15 parts,
ZrO210-15 parts, nanometer WC10-20 parts.
2. a kind of blower fan according to claim 1, it is characterised in that the Co based alloys include following mass percent
Component：C：0.79-0.85%, P：0.008-0.01%, Cr：24.7-25.2%, S：0.001-0.0015%, Fe：0.3-
0.32%, Si：0.4-0.42%, Mn：0.01-0.02%, W：7.5-8.0%, Ni：10.5-10.8%, surplus Co.
3. a kind of blower fan according to claim 1, it is characterised in that the steel alloy includes the group of following mass fraction
Point：C：0.08-0.12%, Cr：8.5-9.0%, W：2.5-2.8%, V：0.23-0.26%, Ta：0.16-0.20%, Mn：
0.4-0.5%, Y2O3：0.12-0.20%, surplus Fe.
A kind of 4. blower fan according to claim 3, it is characterised in that the mass ratio of Y element and Ti elements in the blower fan
For 0.21-0.25.
5. a kind of preparation method of blower fan as claimed in claim 1, it is characterised in that the preparation method comprises the following steps：
Melting：Steel alloy is added in vacuum drying oven, vacuumizes and is warming up to the molten steel of 800-890 DEG C of progress melting；
Refining：It is passed through argon gas to be refined, and adds cleanser, skims and blower fan blank is poured into a mould to obtain after coming out of the stove；
Heat treatment：Blower fan blank is passed through into continuous annealing treatment successively, blower fan semi-finished product are obtained after Quenching Treatment and temper；
Coating coats：Blower fan is obtained in blower fan surface of semi-finished coating cobalt-based alloy layer using laser melting coating.
6. the preparation method of a kind of blower fan according to claim 5, it is characterised in that the continuous annealing process specifically wraps
Include following steps：Annealing soak temperature is 875-885 DEG C, and the annealing soak time is 120-130s, and slow cooling speed is 5-6 DEG C/s,
Slow cooling temperature is 705-710 DEG C, temperature retention time 300-305s.
7. the preparation method of a kind of blower fan according to claim 5, it is characterised in that the quenching and temper include
Following steps：It is 30-40min 850-855 DEG C of cool times that hardening heat, which is, and temperature is 475 DEG C~525 DEG C, during tempering
Between be 45~60min.
8. the preparation method of a kind of blower fan according to claim 5, it is characterised in that the quality of the cleanser is molten steel
The 0.5-1.7% of gross mass, the cleanser are 12CaO.7Al2O3。
A kind of 9. preparation method of blower fan according to claim 8, it is characterised in that the cleanser 12CaO.7Al2O3
Granularity be 70-80 μm.
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Cited By (1)
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