CN107299309A - A kind of centrifugal compressed arbor method of worn - Google Patents
A kind of centrifugal compressed arbor method of worn Download PDFInfo
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- CN107299309A CN107299309A CN201710522239.9A CN201710522239A CN107299309A CN 107299309 A CN107299309 A CN 107299309A CN 201710522239 A CN201710522239 A CN 201710522239A CN 107299309 A CN107299309 A CN 107299309A
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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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
-
- 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%
-
- 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
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/10—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on titanium carbide
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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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
- C22C32/0047—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 carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—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 carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The present invention relates to a kind of centrifugal compressed arbor method of worn, comprise the following steps：Determine the eroded area of centrifugal compressed arbor；The eroded area grinding is handled, when the hardness number of the eroded area reach or close to the centrifugal compressed arbor hardness number when, dye-penetrant inspection is carried out to the centrifugal compressed arbor after grinding, the grinding to the eroded area is stopped after flaw detection zero defect is confirmed；Spray coating metal ceramic coating treatment is carried out to the eroded area by supersonic flame spraying spray gun；Grinding processing is carried out to the metal-cermic coating, makes the size of the region diameter of axle after the application metal-cermic coating identical with original start size；The metal-cermic coating after handling grinding carries out dye-penetrant inspection, is finished product after dye-penetrant inspection is qualified.The present invention not only have the advantages that efficiency high, coating and axle adhesion is good and energy-conserving and environment-protective, but also, dangerous advantage that reduction centrifugal compressor shaft distortion bend small with heat input.
Description
Technical field
The present invention is to belong to centrifugal compressor field, more particularly to a kind of centrifugal compressed arbor method of worn.
Background technology
Axle is one of strength member of centrifugal compressor, not only bears and delivered whole rotational parts in varying environment
Rotated at a high speed in (temperature, pressure, medium) lower casing, subject the effect of moment of flexure, while axle subjects the stress of complexity in itself,
Therefore strict demand is proposed to shaft material.Such as assembly type gear centrifugal compressor main shaft material is nitridation Steel material, small tooth
Wheel and gear wheel teeth portion employ nitridation process and carry out Surface hardened layer and polishing processing, and case hardness reaches more than HRC58.
Under severe Service Environment, often there is wear problem in the axle journal and sealing area of centrifugal compressor, easily production
Raw silk suede is scratched.When hard dirty particles insertion bearing and encapsulant that gas medium is carried, and continuous frictional axle table
Face, will occur this failure.If there is nytron lubricating oil, during high-speed cruising, the high temperature that friction is produced will carbon
Change chromium in steel, form hard chromium carbide and be embedded into and held compared with flexible axle with encapsulant, axle journal or sealing area are played
Shear action.This not only heavy damage balance of rotor, makes unit not run, can also cause over-difference of vibration, influence rotor
Life-span.
It is common at present mainly to have the modes such as built-up welding, plasma spraying, chromium plating on axle renovation technique.Main shaft is primarily served
The effect of moment of torsion is transmitted, has high requirement to the bond strength and defect of coating.If these restorative procedures are used to rotate at a high speed
Centrifugal compressed arbor, in the presence of it is certain the drawbacks of：(1) conventional technology for repairing surfacing, the weld preheating and weldering of higher temperature
After be heat-treated, will influence spindle processing precision, and cause bending shaft deform or underbead crack defect.Especially gear compressor,
The gear teeth and the damage position close to the gear teeth can not be repaired using welding method.(2) plasma spraying repair coating compactness and
Hardness is inadequate, while not enough with the bond strength of matrix.(3) chromium plating reparation bond strength is relatively low, it is impossible to which fully transmission is turned round
Square, while being limited by environmental requirement.The coating of other technology reparations may cause failure mainly due to porosity is higher.
The content of the invention
For disadvantages mentioned above present in prior art, repaiied it is an object of the invention to provide a kind of abrasion of centrifugal compressed arbor
Compound method, by the present invention in that repaired with supersonic flame spraying spray gun to the eroded area of centrifugal compressed arbor, make from
The spray process temperature of heart compressor shaft controlled below 200 DEG C, it is to avoid axle occurs bending and deformation or interior at relatively high temperatures
Portion's crack defect.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of centrifugal compressed arbor method of worn, comprises the following steps：
Determine the eroded area of centrifugal compressed arbor；
The eroded area grinding is handled, when the hardness number of the eroded area reaches or close to the centrifugal compressor
During the hardness number of axle, dye-penetrant inspection is carried out to the centrifugal compressed arbor after grinding, stopped after flaw detection zero defect is confirmed
Only to the grinding of the eroded area；
Spray coating metal ceramic coating treatment is carried out to the eroded area by supersonic flame spraying spray gun；
Grinding processing is carried out to the metal-cermic coating, makes the chi of the region diameter of axle after the application metal-cermic coating
It is very little identical with original start size；
The metal-cermic coating after handling grinding carries out dye-penetrant inspection, is after dye-penetrant inspection is qualified
Finished product.
Further, the determination of the eroded area of the centrifugal compressed arbor, is by entering to the centrifugal compressed arbor
Row hardness test, determines to whether there is cementation zone on centrifugal compressed arbor, the region of the cementation zone covering is institute
State eroded area.
Further, in addition to：After eroded area determination, the eroded area is checked and described by amesdial
The axiality of centrifugal compressed arbor, confirms whether centrifugal compressed arbor bends.
Further, when still suffering from deeper groove after the subregion of the eroded area is handled by grinding, car is used
Wheeled litter goes to the region with deeper groove.
Further, the metal-cermic coating is sprayed to the eroded area in the supersonic flame spraying spray gun
Before, sandblasting is carried out to the eroded area surface with emergy, the surface roughness of the eroded area is reached 50~70 μm.
Further, the spray gun distance between the supersonic flame spraying spray gun and the eroded area for 360~
400mm。
Further, the kerosene oil flow of the supersonic flame spraying spray gun is 0.41~0.47L/min, the supersonic speed
The oxygen flow of flame-spraying spray gun is 930~950L/min.
Further, the supersonic flame spraying spray gun sprays the metal-cermic coating to the eroded area and sprayed
During spray process temperature be 80 DEG C~200 DEG C.
Further, the metal-cermic coating carries out grinding processing, the metal-cermic coating by skive
It is Ra0.5 μm~Ra0.8 μm to carry out the surface roughness after grinding processing.
Further, the material of the metal-cermic coating in parts by weight, including following components：
Nickel：30~80 parts, chromium：10~30 parts, molybdenum：20~40 parts, titanium carbide：50~80 parts；Wherein, the grain of the material
Spend for 10~80 μm.
The HVAF technique that the present invention is used come to the eroded area of centrifugal compressor carry out spraying reparation, by
The adhesion not only with efficiency high, coating and axle is repaired to centrifugal compressed arbor in HVAF ceramic coating
The advantage of good and energy-conserving and environment-protective, but also it is small with heat input, and then reduce the dangerous of centrifugal compressor shaft distortion bending
Advantage.The present invention is repaired using HVAF metal-cermic coating and strengthens centrifugal compressed arbor eroded area, no
Only exceed nitration case in terms of hardness and wearability, and anchoring strength of coating is higher, meets centrifugal compressed arbor use requirement.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is a kind of flow chart of centrifugal compressed arbor method of worn of exemplary embodiment of the present.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be arranged and designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
Fig. 1 is according to a kind of flow chart of one embodiment of centrifugal compressed arbor method of worn of the invention, such as Fig. 1
It is shown：Comprise the following steps：
Step S101, determines the eroded area of centrifugal compressed arbor；
The determination of the eroded area of centrifugal compressed arbor, be by centrifugal compressed arbor carry out hardness test, it is determined that from
It whether there is cementation zone on heart compressor shaft, the region of cementation zone covering is eroded area；
After eroded area determination, the axiality of eroded area and centrifugal compressed arbor is checked by amesdial, confirm from
Whether heart compressor shaft bends；
Wherein, the material of metal-cermic coating in parts by weight, including following components：
Nickel：30~80 parts, chromium：10~30 parts, molybdenum：20~40 parts, titanium carbide：50~80 parts；Wherein, the granularity of material is
10~80 μm.Coating after being sprayed by above-mentioned material has higher intensity and toughness, and with preferable wearability, and
And its case hardness reaches more than HRC60.
Step S102, is handled eroded area grinding, and the hardness number of eroded area reaches or close to centrifugal compressed arbor
After hardness number, dye-penetrant inspection is carried out to the centrifugal compressed arbor after grinding, stopped after flaw detection zero defect is confirmed to abrasion
The grinding in region；
When still suffering from deeper groove after the subregion of eroded area is handled by grinding, gone with lathe car with deeper
The region of groove.
Step S103, spray coating metal ceramic coating treatment is carried out by supersonic flame spraying spray gun to eroded area；
Spray gun distance between supersonic flame spraying spray gun and eroded area is 360~400mm, 360~400mm spray guns
The setting of distance can not only improve the efficiency that supersonic flame spraying spray gun is sprayed to eroded area, but also will not make
Centrifugal compressed arbor produces larger temperature rise, enters without deforming centrifugal compressor bending shaft；
The kerosene oil flow of supersonic flame spraying spray gun is 0.41~0.47L/min, the oxygen of supersonic flame spraying spray gun
Throughput is 930~950L/min, and the setting of kerosene oil flow and oxygen flow parameter can have ensuring coating with eroded area
Under the premise of combinative, the temperature increase rate of centrifugal compressed arbor can also be controlled；
Supersonic flame spraying spray gun is to the spray process temperature during eroded area spray coating metal ceramic coating spraying
For 80 DEG C~200 DEG C, the restriction of 80 DEG C~200 DEG C of spraying coating process will not cause shaft material to undergo phase transition and bend, it is to avoid
The weld preheating and post weld heat treatment in higher temperature are needed in the prior art, improve spindle processing precision, and reduce axle
Flexural deformation or underbead crack defect；
Wherein, before supersonic flame spraying spray gun is to eroded area spray coating metal ceramic coating, with emergy to abrasion
Region surface carries out sandblasting, the surface roughness of eroded area is reached 50~70 μm, to increase the knot of coating and eroded area
With joint efforts.
Step S104, carries out grinding processing to metal-cermic coating, makes the region diameter of axle after application metal-cermic coating
Size is identical with original start size；
Metal-cermic coating carries out grinding processing by skive, and metal-cermic coating carries out the table after grinding processing
Surface roughness is Ra0.5 μm~Ra0.8 μm.
Step S105, the metal-cermic coating after handling grinding carries out dye-penetrant inspection, dye-penetrant inspection
It is finished product after qualified.
Compared with conventional recovery technique, the HVAF technique that the present invention is used is come the abrasion to centrifugal compressor
Region carries out spraying reparation, and centrifugal compressed arbor, which is repaired, due to HVAF ceramic coating not only has efficiency
High, good and energy-conserving and environment-protective the advantage of the adhesion of coating and axle, but also it is small with heat input, and then reduce centrifugal compressor
The dangerous advantage of shaft distortion bending.The present invention is repaired using HVAF metal-cermic coating and strengthens centrifugation pressure
Contracting arbor eroded area, not only exceedes nitration case in terms of hardness and wearability, and anchoring strength of coating is higher, meets centrifugation
Compressor shaft use requirement.
For a further understanding of the present invention, a kind of centrifugal compressed arbor that the present invention is provided is worn and torn with reference to embodiment
Restorative procedure is illustrated, and protection scope of the present invention is not limited by the following examples.
Embodiment 1
A kind of centrifugal compressed arbor method of worn：Comprise the following steps：
Step S101, by carrying out hardness test to the centrifugal compressed arbor using 40CrNiMo7 as material, it is determined that centrifugation pressure
It whether there is cementation zone on contracting arbor, if there is cementation zone, the region of cementation zone covering is eroded area,
Wherein, hardness test is carried out to centrifugal compressed arbor by hardometer；
After eroded area determination, the axiality of eroded area and centrifugal compressed arbor is checked by amesdial, confirm from
Whether heart compressor shaft bends；
Wherein, the material of metal-cermic coating in parts by weight, including following components：
Nickel：50 parts, chromium：30 parts, molybdenum：30 parts, titanium carbide：50 parts；Wherein, the granularity of material is 50 μm.Pass through above-mentioned material
Coating after material spraying has higher intensity and toughness, and has preferable wearability, and its case hardness reaches
HRC65。
Step S102, is handled eroded area grinding, and the hardness number of eroded area reaches or close to centrifugal compressed arbor
After hardness number, dye-penetrant inspection is carried out to the centrifugal compressed arbor after grinding, stopped after flaw detection zero defect is confirmed to abrasion
The grinding in region；When still suffering from deeper groove after the subregion of eroded area is handled by grinding, gone to carry with lathe car
The region of deeper groove.
Step S103, before supersonic flame spraying spray gun is to eroded area spray coating metal ceramic coating, with emergy pair
Eroded area surface carries out sandblasting, the surface roughness of eroded area is reached 50~70 μm, to increase coating and eroded area
Adhesion；
Spray coating metal ceramic coating treatment is carried out to eroded area by supersonic flame spraying spray gun, wherein, in spraying
During processing, the spray gun distance between supersonic flame spraying spray gun and eroded area is 360mm, the setting of 360mm spray gun distances
The efficiency that supersonic flame spraying spray gun is sprayed to eroded area can be not only improved, but also centrifugal compressor will not be made
Axle produces larger temperature rise, enters without deforming centrifugal compressor bending shaft；The kerosene oil flow of supersonic flame spraying spray gun
For 0.41L/min, the oxygen flow of supersonic flame spraying spray gun is 930L/min, and kerosene oil flow and oxygen flow parameter are set
Surely on the premise of there can be adhesion ensuring coating and eroded area, the temperature of centrifugal compressed arbor can also be controlled to raise
Speed；Supersonic flame spraying spray gun is to the spray process temperature during eroded area spray coating metal ceramic coating spraying
150 DEG C, the restriction of 150 DEG C of spraying coating process will not cause shaft material to undergo phase transition and bend, it is to avoid need in the prior art
In the weld preheating and post weld heat treatment of higher temperature, spindle processing precision is improved, and reduce bending shaft deformation or internal
Crack defect.
Step S104, carries out grinding processing by skive to metal-cermic coating, makes application metal-cermic coating
The size of the region diameter of axle afterwards is identical with original start size, and the surface roughness that metal-cermic coating carries out after grinding processing is
Ra0.5 μm~Ra0.8 μm；
Step S105, the metal-cermic coating after handling grinding carries out dye-penetrant inspection, and dye-penetrant inspection is qualified
It is finished product afterwards.
Embodiment 2
A kind of centrifugal compressed arbor method of worn：Comprise the following steps：
Step S101, by carrying out hardness test to the centrifugal compressed arbor using 40CrNiMo7 as material, it is determined that centrifugation pressure
It whether there is cementation zone on contracting arbor, if there is cementation zone, the region of cementation zone covering is eroded area,
Wherein, hardness test is carried out to centrifugal compressed arbor by hardometer；
After eroded area determination, the axiality of eroded area and centrifugal compressed arbor is checked by amesdial, confirm from
Whether heart compressor shaft bends；
Wherein, the material of metal-cermic coating in parts by weight, including following components：
Nickel：30 parts, chromium：20 parts, molybdenum：40 parts, titanium carbide：80 parts；Wherein, the granularity of material is 10 μm.Pass through above-mentioned material
Coating after material spraying has higher intensity and toughness, and has preferable wearability, and its case hardness reaches
HRC70。
Step S102, is handled eroded area grinding, and the hardness number of eroded area reaches or close to centrifugal compressed arbor
After hardness number, dye-penetrant inspection is carried out to the centrifugal compressed arbor after grinding, stopped after flaw detection zero defect is confirmed to abrasion
The grinding in region；When still suffering from deeper groove after the subregion of eroded area is handled by grinding, gone to carry with lathe car
The region of deeper groove.
Step S103, before supersonic flame spraying spray gun is to eroded area spray coating metal ceramic coating, with emergy pair
Eroded area surface carries out sandblasting, the surface roughness of eroded area is reached 50~70 μm, to increase coating and eroded area
Adhesion；
Spray coating metal ceramic coating treatment is carried out to eroded area by supersonic flame spraying spray gun, wherein, in spraying
During processing, the spray gun distance between supersonic flame spraying spray gun and eroded area is 380mm, the setting of 380mm spray gun distances
The efficiency that supersonic flame spraying spray gun is sprayed to eroded area can be not only improved, but also centrifugal compressor will not be made
Axle produces larger temperature rise, enters without deforming centrifugal compressor bending shaft；The kerosene oil flow of supersonic flame spraying spray gun
For 0.44L/min, the oxygen flow of supersonic flame spraying spray gun is 940L/min, and kerosene oil flow and oxygen flow parameter are set
Surely on the premise of there can be adhesion ensuring coating and eroded area, the temperature of centrifugal compressed arbor can also be controlled to raise
Speed；Supersonic flame spraying spray gun is to the spray process temperature during eroded area spray coating metal ceramic coating spraying 80
DEG C, the restriction of 80 DEG C of spraying coating process will not cause shaft material to undergo phase transition and bend, it is to avoid need in the prior art compared with
The weld preheating and post weld heat treatment of high-temperature, improve spindle processing precision, and reduce bending shaft deformation or underbead crack
Defect.
Step S104, carries out grinding processing by skive to metal-cermic coating, makes application metal-cermic coating
The size of the region diameter of axle afterwards is identical with original start size, and the surface roughness that metal-cermic coating carries out after grinding processing is
Ra0.5 μm~Ra0.8 μm；
Step S105, the metal-cermic coating after handling grinding carries out dye-penetrant inspection, and dye-penetrant inspection is qualified
It is finished product afterwards.
Embodiment 3
A kind of centrifugal compressed arbor method of worn：Comprise the following steps：
Step S101, by carrying out hardness test to the centrifugal compressed arbor using 40CrNiMo7 as material, it is determined that centrifugation pressure
It whether there is cementation zone on contracting arbor, if there is cementation zone, the region of cementation zone covering is eroded area,
Wherein, hardness test is carried out to centrifugal compressed arbor by hardometer；
After eroded area determination, the axiality of eroded area and centrifugal compressed arbor is checked by amesdial, confirm from
Whether heart compressor shaft bends；
Wherein, the material of metal-cermic coating in parts by weight, including following components：
Nickel：80 parts, chromium：10 parts, molybdenum：20 parts, titanium carbide：60 parts；Wherein, the granularity of material is 80 μm.Pass through above-mentioned material
Coating after material spraying has higher intensity and toughness, and has preferable wearability, and its case hardness reaches
HRC72。
Step S102, is handled eroded area grinding, and the hardness number of eroded area reaches or close to centrifugal compressed arbor
After hardness number, dye-penetrant inspection is carried out to the centrifugal compressed arbor after grinding, stopped after flaw detection zero defect is confirmed to abrasion
The grinding in region；When still suffering from deeper groove after the subregion of eroded area is handled by grinding, gone to carry with lathe car
The region of deeper groove.
Step S103, before supersonic flame spraying spray gun is to eroded area spray coating metal ceramic coating, with emergy pair
Eroded area surface carries out sandblasting, the surface roughness of eroded area is reached 50~70 μm, to increase coating and eroded area
Adhesion；
Spray coating metal ceramic coating treatment is carried out to eroded area by supersonic flame spraying spray gun, wherein, in spraying
During processing, the spray gun distance between supersonic flame spraying spray gun and eroded area is 400mm, the setting of 400mm spray gun distances
The efficiency that supersonic flame spraying spray gun is sprayed to eroded area can be not only improved, but also centrifugal compressor will not be made
Axle produces larger temperature rise, enters without deforming centrifugal compressor bending shaft；The kerosene oil flow of supersonic flame spraying spray gun
For 0.47L/min, the oxygen flow of supersonic flame spraying spray gun is 950L/min, and kerosene oil flow and oxygen flow parameter are set
Surely on the premise of there can be adhesion ensuring coating and eroded area, the temperature of centrifugal compressed arbor can also be controlled to raise
Speed；Supersonic flame spraying spray gun is to the spray process temperature during eroded area spray coating metal ceramic coating spraying
200 DEG C, the restriction of 200 DEG C of spraying coating process will not cause shaft material to undergo phase transition and bend, it is to avoid need in the prior art
In the weld preheating and post weld heat treatment of higher temperature, spindle processing precision is improved, and reduce bending shaft deformation or internal
Crack defect.
Step S104, carries out grinding processing by skive to metal-cermic coating, makes application metal-cermic coating
The size of the region diameter of axle afterwards is identical with original start size, and the surface roughness that metal-cermic coating carries out after grinding processing is
Ra0.5 μm~Ra0.8 μm；
Step S105, the metal-cermic coating after handling grinding carries out dye-penetrant inspection, and dye-penetrant inspection is qualified
It is finished product afterwards.
Compared with conventional recovery technique, the HVAF technological operation of the invention used is convenient, flexible effective, section
Can environmental protection.The present invention is repaired using HVAF metal-cermic coating and strengthens centrifugal compressed arbor eroded area,
Not only exceed nitration case in terms of hardness and wearability, and anchoring strength of coating is higher, meets centrifugal compressor main shaft and uses
It is required that.The technique is applied to the reparation and surface peening of turbomachinery main shaft.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of centrifugal compressed arbor method of worn, it is characterised in that comprise the following steps：
Determine the eroded area of centrifugal compressed arbor；
The eroded area grinding is handled, when the hardness number of the eroded area reaches or close to the centrifugal compressed arbor
During hardness number, dye-penetrant inspection is carried out to the centrifugal compressed arbor after grinding, the stopping pair after flaw detection zero defect is confirmed
The grinding of the eroded area；
Spray coating metal ceramic coating treatment is carried out to the eroded area by supersonic flame spraying spray gun；
Grinding processing is carried out to the metal-cermic coating, make the size of the region diameter of axle after the application metal-cermic coating with
Original start size is identical；
The metal-cermic coating after handling grinding carries out dye-penetrant inspection, is into after dye-penetrant inspection is qualified
Product.
2. a kind of centrifugal compressed arbor method of worn according to claim 1, it is characterised in that the centrifugal compressed
The determination of the eroded area of arbor, is by carrying out hardness test to the centrifugal compressed arbor, determining on centrifugal compressed arbor
With the presence or absence of cementation zone, the region of the cementation zone covering is the eroded area.
3. a kind of centrifugal compressed arbor method of worn according to claim 1, it is characterised in that also include：Institute
State eroded area determine after, the axiality of the eroded area and the centrifugal compressed arbor is checked by amesdial, confirm from
Whether heart compressor shaft bends.
4. a kind of centrifugal compressed arbor method of worn according to claim 1, it is characterised in that when the worn area
The subregion in domain still suffers from deeper groove after being handled by grinding when, the region with deeper groove is gone to lathe car.
5. a kind of centrifugal compressed arbor method of worn according to claim 1, it is characterised in that in the supersonic speed
Flame-spraying spray gun is sprayed before the metal-cermic coating to the eroded area, and the eroded area surface is entered with emergy
Row sandblasting, makes the surface roughness of the eroded area reach 50~70 μm.
6. a kind of centrifugal compressed arbor method of worn according to claim 1, it is characterised in that the supersonic speed fire
Spray gun distance between flame spray-painting gun and the eroded area is 360~400mm.
7. a kind of centrifugal compressed arbor method of worn according to claim 6, it is characterised in that the supersonic speed fire
The kerosene oil flow of flame spray-painting gun is 0.41~0.47L/min, the oxygen flow of the supersonic flame spraying spray gun for 930~
950L/min。
8. a kind of centrifugal compressed arbor method of worn according to claim 6, it is characterised in that the supersonic speed fire
Flame spray-painting gun the eroded area is sprayed the spray process temperature in the metal-cermic coating spraying process for 80 DEG C~
200℃。
9. a kind of centrifugal compressed arbor method of worn according to any one of claim 1 to 8, it is characterised in that institute
State metal-cermic coating and grinding processing is carried out by skive, the metal-cermic coating carries out the surface after grinding processing
Roughness is Ra0.5 μm~Ra0.8 μm.
10. a kind of centrifugal compressed arbor method of worn according to claim 9, it is characterised in that the metal pottery
The material of porcelain coating in parts by weight, including following components：
Nickel：30~80 parts, chromium：10~30 parts, molybdenum：20~40 parts, titanium carbide：50~80 parts；Wherein, the granularity of the material is
10~80 μm.
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| CN110331358A (en) * | 2019-04-30 | 2019-10-15 | 山东能源重装集团恒图科技有限公司 | A kind of thermal spraying manufacture of oil cylinder of hydraulic support telescopic rod and reproducing method |
| CN110408879A (en) * | 2019-07-23 | 2019-11-05 | 国营芜湖机械厂 | A kind of undecomposable sealing ring piston rod of aircraft band remanufactures renovation technique |
| CN114986261A (en) * | 2022-06-02 | 2022-09-02 | 上海市轴承技术研究所有限公司 | Superfinishing method for hard alloy coating on revolution curved surface |
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| CN114986261A (en) * | 2022-06-02 | 2022-09-02 | 上海市轴承技术研究所有限公司 | Superfinishing method for hard alloy coating on revolution curved surface |
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Application publication date: 20171027 |