CN106438676B - Flexible kinetic pressure gas thrust bearing and its assemble method - Google Patents
Flexible kinetic pressure gas thrust bearing and its assemble method Download PDFInfo
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- CN106438676B CN106438676B CN201611103746.0A CN201611103746A CN106438676B CN 106438676 B CN106438676 B CN 106438676B CN 201611103746 A CN201611103746 A CN 201611103746A CN 106438676 B CN106438676 B CN 106438676B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
Abstract
The invention discloses a kind of flexible kinetic pressure gas thrust bearing and its assemble methods, including bearing block, the elastic support being connected on bearing block and the flat paillon of the top layer being connected on elastic support, the flat paillon of top layer is fixedly connected on elastic support by multiple flat paillons to form bearing working face.The inlet slope structure that thrust bearing of the present invention is not pre-machined, its inlet slope is that self-applying is formed in bearing working, therefore bearing of the present invention does not limit the steering of rotor thrust button, i.e. rotor thrust button is rotated along different directions, bearing of the present invention can work normally, and traditional flexible hydrodynamic gas-lubricated bearing only allows rotor thrust button to rotate in one direction.The flexible characteristic of kinetic pressure gas thrust bearing of the invention adjusts very simple, can easily adjust the stiffness characteristics of bearing, by changing resilient support body elasticity to adapt to demand of the different application condition to bearing rigidity.
Description
Technical field
The present invention relates to a kind of hydrodynamic thrust bearings, in particular to use plane surface flexible as bearing working face
Hydrodynamic thrust bearing and its assemble method.
Background technique
Hydrodynamic gas-lubricated bearing is different according to the direction of limitation rotor displacement, is divided into kinetic pressure gas transverse bearing and kinetic pressure gas
Thrust bearing, wherein kinetic pressure gas transverse bearing limitation rotor radial is displaced and undertakes from radial load, and kinetic pressure gas
Thrust bearing limitation rotor axial displacement simultaneously undertakes from axial load.Hydrodynamic gas-lubricated bearing can be again rigid according to bearing surface
Property or flexibility, are divided into rigid surface hydrodynamic gas-lubricated bearing and flexible surface hydrodynamic gas-lubricated bearing, wherein flexible surface kinetic pressure gas
Bearing due to it is good with high stability, be not easy locking, the accuracy of manufacture and the low advantage of assembly precision requirement, high speed and superelevation
Have wide application prospects in fast rotary machine.
Flexible surface hydrodynamic gas-lubricated bearing at work, is formed dynamic between the rotor surface and bearing surface to run at high speed
It calms the anger film, is therefore eliminated by action pneumatic UF membrane rotor with bearing surface and contact friction, but in the lower starting rank of rotor speed
Section, revolving speed are not enough to be formed effective dynamic pressure air film, contact friction to make to exist between rotor and bearing surface, cause startup power
Square is big, shaft and working rotor surface wear.Available flexible surface hydrodynamic gas-lubricated bearing needs to have lower starting in engineering
The moment of resistance and enough start-stop time service life.
The present invention relates to a kind of flexible kinetic pressure gas thrust bearings.Flexible kinetic pressure gas thrust bearing is using multiple pads
Structure design, the quantity of gasket is not piece equal from 4 to 8 and is uniformly covered with entire bearing working surface by circumferencial direction.Current
The gasket of flexible kinetic pressure gas thrust bearing all uses the structure design of inlet slope, and this design makes thrust button and bearing
Initial wedge-shaped air film is formed between working surface, is theoretically conducive to shape of the gas dynamic pressure effect near air film gap entrance
At, and improve the bearing capacity of kinetic pressure gas thrust bearing.However, finding the slope due to inlet slope in practical manufacturing process
Angle is very small and bearing surface is flexible and is difficult to, so that it is extremely difficult to process ideal inlet slope structure.No
Ideal inlet slope structure not will increase the bearing capacity of bearing not only, will cause bearing staring torque instead and greatly, locally grinds
The problems such as damage is serious, is difficult to take off, and then influence the normal use of bearing.
The present invention proposes on the basis of inheriting tradition flexible thrust hydrodynamic gas-lubricated bearing feature flexible without inlet slope
Plane surface flexibility kinetic pressure gas thrust bearing, overcome that conventional flex hydrodynamic thrust bearing is difficult to and performance is undesirable
Problem.
Summary of the invention
It is excellent it is an object of the invention to solve at least the above problems and/or defect, and provide at least to will be described later
Point.
In order to realize these purposes and other advantages according to the present invention, a kind of flexible dynamic pressure air thrust axis is provided
It holds, it is described including bearing block, the elastic support being connected on bearing block and the flat paillon of the top layer being connected on elastic support
The flat paillon of top layer is fixedly connected on elastic support by multiple flat paillons to form bearing working face.
Preferably, the resilient support body by integral forming is any one in rubber, metal-rubber and wave paillon
Kind；0.5~3mm of thickness of the elastic support.
Preferably, when thrust bearing works by dynamic pressure effect self-applying make the flat foil deformation of the top layer and generate into
Mouth slope.
Preferably, the connection type of the elastic support and bearing block is to be connected using refractory metal glue sticking.
Preferably, the multiple flat paillon is 4~10 pieces of flat paillons of sector；The flat paillon with a thickness of 0.05~
0.10mm；The flat paillon is the flat paillon of elastic metallic；The flat paillon of elastic metallic is the flat paillon of beryllium-bronze, the flat foil of 65 manganese steel
One of piece and the flat paillon of GH145/GH4145 high temperature elastomeric alloy.
Preferably, the flat paillon upper surface coats polytetrafluorethylecoatings coatings；The flat paillon and elastic support
Being fixedly connected with mode is to be connected using refractory metal glue sticking；It is used in the connection surface of the flat paillon and elastic support
Shot-peening roughening treatment.
Preferably, the bearing working face can realize rotor thrust button bidirectional rotation.
The present invention also provides a kind of assemble methods of above-mentioned flexible kinetic pressure gas thrust bearing, comprising the following steps:
Step 1: uniformly coat one layer of refractory metal glue in bearing block upper surface, and by the following table of elastic support
Face is bonded on bearing block, using pressing 1~5MPa of pressure, pressing 10~15s pressed, pressing after the completion of place 12~
24h；
Step 2: shot-peening is 0.2-0.4mm partial size by the upper surface of elastic support is carried out shot-peening roughening treatment
White fused alumina sand, spray distance 50-80mm, injection pressure are 0.3-0.6Mpa；It is uniformly coated in the upper surface of elastic support
One layer of refractory metal glue, and multiple flat paillons are bonded in the upper surface of elastic support, using pressing 1~5MPa of pressure,
Pressing 10~15s pressed, pressing after the completion of place 12~for 24 hours；
Step 3: in the upper surface of multiple flat paillons coating polytetrafluorethylecoatings coatings, placement 12~for 24 hours, it obtains group and installs
At flexible kinetic pressure gas thrust bearing.
Preferably, the elastic support is rubber；The rubber the preparation method comprises the following steps: by weight, by 30~50
Part epoxy rubber and 80~100 parts of natural rubbers, which are added in rubber mixing machines, to be kneaded 10~30 minutes, and 5~10 parts of oxidations are then added
Zinc, 5~8 parts of carbon blacks, 5~8 parts of calcium carbonate, 3~5 parts of attapulgites and 6~10 parts of polyacrylonitrile carbon fibers are uniformly mixed, and are mixed
Refining 1.5~3 hours, adds 1~3 part of ethylene glycol adipate, 2~5 parts of isothiazolinone, 3~5 parts of hydroxyethyl celluloses, 1
~3 parts of methyl anthranilates, 5~8 parts of dimethicones, 1~3 part of tetraphenyltin, 3~5 parts of melamines and 3~5 parts
Polylactic acid is kneaded 30~60 minutes, obtains sizing material, sizing material is pressed and molded, obtain integrally formed rubber.
Preferably, the refractory metal glue the preparation method comprises the following steps: by weight, successively by urethane acrylate 10
~30 parts, 50~80 parts of F-51 novolac epoxy resin, 10~20 parts of glycerin ether and 5~10 parts of liquid carboxy nitrile rubber are added true
In empty double planetary mixer, high-speed stirred rate 1500r/min ± 50r/min stirs at low speed rate 50r/min ± 5r/min,
0.05~0.08MPa of vacuum degree, 60 ± 2min of time, temperature are controlled at 60 ± 5 DEG C, are dispersed with stirring uniformly；Again successively by dioxy
5~8 parts of SiClx, 3~5 parts of zirconium oxide, 3~5 parts of alanine, 3~5 parts of 1- butyl -3- methylimidazolium chloride, levelling agent 6~8
Part, 3~5 parts of chrome greens, 1~3 part of zinc borate and 1~3 part of bismuth naphthenate addition, high-speed stirred rate 2000r/min ±
50r/min stirs at low speed rate 80r/min ± 5r/min, 0.05~0.09MPa of vacuum degree, 120 ± 5min of time, temperature control
System is dispersed with stirring uniformly at 30 ± 5 DEG C；It is even to add 5~8 parts of isophorone diamine, 5~8 parts of polyvinyl acetate resin, silane
Join 6~8 parts and 3~5 parts of ethyl propylene propyl propionate of agent, high-speed stirred rate 1500r/min ± 50r/min stirs at low speed rate
50r/min ± 5r/min, 0.02~0.05MPa of vacuum degree, 60 ± 2min of time, temperature are controlled at 25 ± 5 DEG C, are dispersed with stirring
Even refractory metal glue to obtain the final product.
The present invention provides a kind of flexible kinetic pressure gas thrust bearing that processing and manufacturing is easy and has excellent performance, the dynamic pressures
Gas lubricated thrust bearing shows that adaptive deformability constructs entrance ramp structure using flexibility, so that bearing is sufficiently inherited tradition soft
Property kinetic pressure gas thrust bearing flexible surface feature while, make processing and manufacturing it is more easy.
The present invention is include at least the following beneficial effects:
(1) bearing working face of plane can directly be formed by the flat paillon of plane, and the flat paillon ratio band of plane is initial tiltedly
The top paillon on slope is easy many in terms of processing, and surface shape precision is easily guaranteed that；
(2) elastic support is overall structure, saves cutting technique step needed for being divided into multiple sector structures, makes to add
Work process simplification, while whole elastic support is bonded on bearing block and only needs a bonding step, it is more multiple than being divided into
The multiple bonding of the elastic support of sector structure is more easy, and installation accuracy is easily guaranteed that；
(3) initial working surface of bearing of the present invention is plane, it means that bearing surface and rotor table when contact friction
Face contact area is bigger, to keep the contact stress of bearing surface unit area smaller, avoids bearing from part occur and is seriously worn,
Bearing is set to obtain longer service life；
(4) the inlet slope structure that bearing of the present invention is not pre-machined, inlet slope are in bearing working from work
With formation, therefore bearing of the present invention does not limit the steering of rotor thrust button, i.e. rotor thrust button is rotated along different directions, this hair
Bright bearing can work normally, and traditional flexible hydrodynamic gas-lubricated bearing only allows rotor thrust button to rotate in one direction.
(5) flexible characteristic of kinetic pressure gas thrust bearing of the invention adjusts very simple, can be flexibly supported by changing
Body elasticity easily adjusts the stiffness characteristics of bearing, to adapt to demand of the different application condition to bearing rigidity.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention:
Fig. 1 is flexible kinetic pressure gas bearing structure figure of the present invention；
Fig. 2 is the positional relationship structure chart of the present invention flexible kinetic pressure gas thrust bearing and rotor；
Fig. 3 is the working principle diagram of the flexible hydrodynamic gas-lubricated bearing of the present invention.
In FIG. 1 to FIG. 3, the flat paillon of 1. top layers, 2. elastic supports, 3. bearing blocks, 4. rotor thrust buttons.
Specific embodiment:
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
Fig. 1 shows a kind of flexible kinetic pressure gas thrust bearing of the invention, including bearing block 3, is connected on bearing block 3
Elastic support 2 and the flat paillon 1 of top layer that is connected on elastic support 2, which is characterized in that the flat paillon 1 of top layer by
Multiple flat paillons 11 are fixedly connected on elastic support 2 to form bearing working；
Fig. 2 shows the rigging position relationships of flexible kinetic pressure gas thrust bearing of the invention and rotor, in above scheme
In, as shown in figure 3, when the bearing working face that rotor thrust button 4 is formed relative to the flat paillon 1 of top layer is counterclockwise transported as in figure
When dynamic, the bearing clearance boundary in left side is air film entrance, and the dynamic pressure effect of inlet makes the gas near the right side boundary of bearing clearance
Film pressure increases, and the flat paillon of top layer near right side boundary is bent downwardly under the action of gas film pressure, forms inlet slope.Together
Reason, when rotor thrust button 4 is moved relative to the bearing working face 1 that the flat paillon 1 of top layer is formed by clockwise direction direction in figure,
The bearing clearance boundary on right side becomes air film entrance, the flat paillon 1 of top layer near right side boundary under the action of gas film pressure to
Lower bending is formed in the inlet slope on right side.
In the above-mentioned technical solutions, the annular shape that the elastic support is integrally formed, be rubber, metal-rubber and
Any one in wave paillon, 0.5~3mm of thickness of the elastic support；Using this technical solution, difference can be selected
The elastic support of structure and thickness adjusts the rigidity of structure of bearing.
In the above-mentioned technical solutions, the flat foil deformation of the top layer is made by dynamic pressure effect self-applying when thrust bearing works
And inlet slope is generated, using the plane surface flexibility kinetic pressure gas thrust bearing of no inlet slope, it is dynamic to overcome conventional flex
The problem that pressure thrust bearing is difficult to and performance is undesirable.
In the above-mentioned technical solutions, the connection type of the elastic support and bearing block is using refractory metal gluing
It connects, using this technical solution, elastic support can firmly be connect with bearing block in succession, and after bonding capable of being prevented
Colloid problem easy to aging under high temperature environment.
In the above-mentioned technical solutions, the multiple flat paillon is 4~10 pieces of flat paillons of sector；The flat paillon with a thickness of
0.05~0.10mm, the size of flat paillon have to be cut out by elastic metallic paillon and shape, adopt depending on bearing size size
Be conducive to make the flat foil deformation of the top layer when thrust bearing works and generate inlet slope with the mode of multiple flat paillons.
In the above-mentioned technical solutions, the flat paillon is the flat paillon of elastic metallic；The flat paillon of elastic metallic is that beryllium is green
One of the flat paillon of copper, the flat paillon of 65 manganese steel and the flat paillon of GH145/GH4145 high temperature elastomeric alloy, using these elasticity gold
Belong to flat paillon to be conducive to make the flat foil deformation of elastic metallic when thrust bearing works and generate inlet slope.
In the above-mentioned technical solutions, the flat paillon upper surface coats polytetrafluorethylecoatings coatings, and coating polytetrafluoroethylene (PTFE) applies
Layer reduces frictional force when bearing starts as solid lubricant and reduces flat paillon abrasion.
In the above-mentioned technical solutions, the flat paillon is using refractory metal with the mode that is fixedly connected of elastic support
Glue sticking connection, flat paillon can firmly connect with elastic support, and can prevent bond after colloid in high temperature ring
Problem easy to aging under border；Shot-peening roughening treatment is used in the connection surface of the flat paillon and elastic support, is mentioned with this
Bonding force between high flat paillon and elastic support.
In the above-mentioned technical solutions, the bearing working face can realize rotor thrust button bidirectional rotation, due to axis of the present invention
Hold the inlet slope structure not being pre-machined, inlet slope is that self-applying is formed in bearing working, therefore the present invention
Bearing does not limit the steering of rotor thrust button, i.e. rotor thrust button is rotated along different directions, and bearing of the present invention being capable of normal work
Make, and traditional flexible hydrodynamic gas-lubricated bearing only allows rotor thrust button to rotate in one direction.
The present invention also provides a kind of assemble methods of above-mentioned flexible kinetic pressure gas thrust bearing, comprising the following steps:
Step 1: uniformly coat one layer of refractory metal glue in bearing block upper surface, and by caoutchouc elasticity supporter
Lower surface is bonded on bearing block, and using pressing pressure 1MPa, pressing 10s is pressed, and 12h is placed after the completion of pressing；
Step 2: the upper surface of caoutchouc elasticity supporter is carried out shot-peening roughening treatment, shot-peening is the white of 0.2mm partial size
Emergy, spray distance 50mm, injection pressure are 0.3Mpa；One layer of high temperature resistant is uniformly coated in the upper surface of elastic support
Metal-to-metal adhesive, and 6 flat paillons of sector are bonded in the upper surface of caoutchouc elasticity supporter, using pressing pressure 1MPa, press 10s
It is pressed, 12h is placed after the completion of pressing；The flat paillon of sector with a thickness of 0.05mm；The flat paillon is elastic metallic
Flat paillon；The flat paillon of elastic metallic is the flat paillon of beryllium-bronze；
Step 3: coating polytetrafluorethylecoatings coatings in the upper surface of 6 flat paillons of sector, 12h is placed, is completed
Flexible kinetic pressure gas thrust bearing.
In the above-mentioned technical solutions, the elastic support is rubber；The rubber the preparation method comprises the following steps: by 50g epoxy
Rubber and 100g natural rubber, which are added in rubber mixing machine, to be kneaded 10 minutes, and 5g zinc oxide, 6g carbon black, 8g calcium carbonate, 4g is then added
Attapulgite and 8g polyacrylonitrile carbon fiber are uniformly mixed, and are kneaded 1.5 hours, are added the different thiophene of 1g ethylene glycol adipate, 2g
Oxazoline ketone, 5g hydroxyethyl cellulose, 3g methyl anthranilate, 8g dimethicone, 3g tetraphenyltin, 4g melamine and
5g polylactic acid is kneaded 60 minutes, obtains sizing material, sizing material is pressed and molded, obtain integrally formed rubber.Using this technical side
The rubber that case obtains, elasticity are adapted to demand of the different application condition to bearing rigidity.
In the above-mentioned technical solutions, the refractory metal glue the preparation method comprises the following steps: successively by urethane acrylate
20g, F-51 novolac epoxy resin 60g, glycerin ether 10g and liquid carboxy nitrile rubber 10g are added in vacuum double planetary mixer,
High-speed stirred rate 1500r/min, stirs at low speed rate 50r/min, vacuum degree 0.08MPa, time 60min, and temperature control exists
It 60 DEG C, is dispersed with stirring uniformly；Again successively by silica 7g, zirconium oxide 3g, alanine 3g, 1- butyl -3- methylimidazolium chloride
4g, levelling agent 7g, 3g chrome green, zinc borate 2g and bismuth naphthenate 2g are added, high-speed stirred rate 2000r/min, low speed
Stirring rate 80r/min, vacuum degree 0.06MPa, time 120min, temperature control are dispersed with stirring uniformly at 30 DEG C；It adds different
Isophoronediamine 6g, polyvinyl acetate resin 5g, silane coupling agent 7g and ethyl propylene propyl propionate 4g, high-speed stirred rate
1500r/min, stirs at low speed rate 50r/min, vacuum degree 0.02MPa, time 60min, and temperature is controlled at 25 DEG C, is dispersed with stirring
Uniformly up to refractory metal glue.The refractory metal glue obtained using this technical solution, can be by elastic support jail
Solid connect with bearing block peace paillon, and its high temperature resistance is excellent, and colloid is under high temperature environment after capable of preventing bonding
Problem easy to aging.
The present invention also provides a kind of assemble methods of above-mentioned flexible kinetic pressure gas thrust bearing, comprising the following steps:
Step 1: uniformly coat one layer of refractory metal glue in bearing block upper surface, and by caoutchouc elasticity supporter
Lower surface is bonded on bearing block, and using pressing pressure 3MPa, pressing 12s is pressed, and is placed for 24 hours after the completion of pressing；
Step 2: the upper surface of caoutchouc elasticity supporter is carried out shot-peening roughening treatment, shot-peening is the white of 0.3mm partial size
Emergy, spray distance 60mm, injection pressure are 0.5Mpa；One layer of high temperature resistant gold is uniformly coated in the upper surface of elastic support
Belong to glue, and 6 flat paillons of sector be bonded in the upper surface of caoutchouc elasticity supporter, using pressing pressure 2MPa, pressing 12s into
Row pressing is placed for 24 hours after the completion of pressing；The flat paillon of sector with a thickness of 0.05mm；The flat paillon is flat for elastic metallic
Paillon；The flat paillon of elastic metallic is the flat paillon of 65 manganese steel；
Step 3: coating polytetrafluorethylecoatings coatings in the upper surface of 6 flat paillons of sector, 12h is placed, is completed
Flexible kinetic pressure gas thrust bearing.
In above-mentioned technical proposal, the rubber the preparation method comprises the following steps: by weight, 40 parts of epoxy rubbers and 90 parts are natural
Rubber, which is added in rubber mixing machine, to be kneaded 20 minutes, and 8 parts of zinc oxide, 6 parts of carbon blacks, 6 parts of calcium carbonate, 4 parts of attapulgites and 8 are then added
Part polyacrylonitrile carbon fiber, is uniformly mixed, and is kneaded 2 hours, adds 2 parts of ethylene glycol adipates, 3 parts of isothiazolinone, 4 parts
Hydroxyethyl cellulose, 2 parts of methyl anthranilates, 6 parts of dimethicones, 2 parts of tetraphenyltins, 4 parts of melamines and 4 parts are poly-
Lactic acid is kneaded 50 minutes, obtains sizing material, sizing material is pressed and molded, obtain integrally formed rubber.
In the above-mentioned technical solutions, the refractory metal glue the preparation method comprises the following steps: by weight, successively by polyurethane third
8 parts of 20 parts of olefin(e) acid ester, 60 parts of F-51 novolac epoxy resin, 15 parts of glycerin ether and liquid carboxy nitrile rubber addition vacuum double-planets
In blender, high-speed stirred rate 1500r/min stirs at low speed rate 50r/min, vacuum degree 0.06MPa, time 60min, temperature
Degree control is dispersed with stirring uniformly at 60 DEG C；Again successively by 6 parts of silica, 4 parts of zirconium oxide, 4 parts of alanine, 1- butyl -3- first
4 parts of base imidazolitm chloride, 7 parts, 4 parts chrome greens of levelling agent, 2 parts of zinc borate and 2 parts of bismuth naphthenate additions, high-speed stirred rate
2000r/min, stirs at low speed rate 80r/min, vacuum degree 0.06MPa, time 120min, and temperature control is dispersed with stirring at 30 DEG C
Uniformly；Add 6 parts of isophorone diamine, 6 parts of polyvinyl acetate resin, 7 parts of silane coupling agent and ethyl propylene propyl propionate 4
Part, high-speed stirred rate 1500r/min stirs at low speed rate 50r/min, vacuum degree 0.03MPa, time 60min, temperature control
At 25 DEG C, it is dispersed with stirring uniformly up to refractory metal glue.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (5)
1. a kind of assemble method of flexibility kinetic pressure gas thrust bearing, which is characterized in that flexible kinetic pressure gas thrust bearing includes
Bearing block, the elastic support being connected on bearing block and the flat paillon of the top layer being connected on elastic support, the top layer are flat
Paillon is fixedly connected on elastic support by multiple flat paillons to form bearing working face；The thickness of the elastic support
0.5~3mm；The resilient support body by integral forming；The multiple flat paillon is 4~10 pieces of flat paillons of sector；The flat paillon
With a thickness of 0.05~0.10mm；The flat paillon is the flat paillon of elastic metallic；
The assemble method of flexible kinetic pressure gas thrust bearing the following steps are included:
Step 1: uniformly coating one layer of refractory metal glue in bearing block upper surface, and the lower surface of elastic support is glued
Knot on bearing block, using pressing 1~5MPa of pressure, pressing 10~15s pressed, pressing after the completion of place 12~for 24 hours；
Step 2: the upper surface of elastic support is carried out shot-peening roughening treatment, shot-peening is the white fused alumina of 0.2-0.4mm partial size
Sand, spray distance 50-80mm, injection pressure are 0.3-0.6Mpa；The upper surface of elastic support uniformly coat one layer it is resistance to
High-temperature metal glue, and multiple flat paillons are bonded in the upper surface of elastic support, using pressing 1~5MPa of pressure, pressing 10
~15s is pressed, pressing after the completion of place 12~for 24 hours；
Step 3: in the upper surface of multiple flat paillons coating polytetrafluorethylecoatings coatings, placement 12~for 24 hours, it is completed
Flexible kinetic pressure gas thrust bearing；
The elastic support is rubber；The rubber the preparation method comprises the following steps: by weight, by 30~50 parts of epoxy rubbers and 80
~100 parts of natural rubbers, which are added in rubber mixing machine, to be kneaded 10~30 minutes, and 5~10 parts of zinc oxide, 5~8 parts of carbon blacks, 5 are then added
~8 parts of calcium carbonate, 3~5 parts of attapulgites and 6~10 parts of polyacrylonitrile carbon fibers are uniformly mixed, and are kneaded 1.5~3 hours, then
1~3 part of ethylene glycol adipate, 2~5 parts of isothiazolinone, 3~5 parts of hydroxyethyl celluloses, 1~3 part of o-amino benzoyl is added
Sour methyl esters, 5~8 parts of dimethicones, 1~3 part of tetraphenyltin, 3~5 parts of melamines and 3~5 parts of polylactic acid, mixing 30~
60 minutes, sizing material is obtained, sizing material is pressed and molded, obtains integrally formed rubber.
2. the assemble method of flexibility kinetic pressure gas thrust bearing as described in claim 1, which is characterized in that in thrust bearing work
The flat foil deformation of the top layer is made by dynamic pressure effect self-applying when making and generates inlet slope.
3. the assemble method of flexibility kinetic pressure gas thrust bearing as described in claim 1, which is characterized in that the bearing working
Face can realize rotor thrust button bidirectional rotation.
4. the assemble method of flexibility kinetic pressure gas thrust bearing as described in claim 1, which is characterized in that the elastic metallic
Flat paillon is one of the flat paillon of beryllium-bronze, the flat paillon of 65 manganese steel and the flat paillon of GH145/GH4145 high temperature elastomeric alloy.
5. the assemble method of flexibility kinetic pressure gas thrust bearing as described in claim 1, which is characterized in that the high temperature resistant gold
Belong to glue the preparation method comprises the following steps: by weight, successively by 10~30 parts of urethane acrylate, F-51 novolac epoxy resin 50~80
In 5~10 parts of part, 10~20 parts of glycerin ether and liquid carboxy nitrile rubber addition vacuum double planetary mixers, high-speed stirred rate
1500r/min ± 50r/min, stirs at low speed rate 50r/min ± 5r/min, 0.05~0.08MPa of vacuum degree, and the time 60 ±
2min, temperature are controlled at 60 ± 5 DEG C, are dispersed with stirring uniformly；Again successively by 5~8 parts of silica, 3~5 parts of zirconium oxide, the third ammonia
Sour 3~5 parts, 3~5 parts of 1- butyl -3- methylimidazolium chloride, levelling agent 6~8 parts, 3~5 parts chrome greens, zinc borates 1~3
Part and 1~3 part of bismuth naphthenate addition, high-speed stirred rate 2000r/min ± 50r/min, stir at low speed rate 80r/min ±
5r/min, 0.05~0.09MPa of vacuum degree, 120 ± 5min of time, temperature control are dispersed with stirring uniformly at 30 ± 5 DEG C；It adds
5~8 parts of isophorone diamine, 5~8 parts of polyvinyl acetate resin, 6~8 parts of silane coupling agent and ethyl propylene propyl propionate 3~5
Part, high-speed stirred rate 1500r/min ± 50r/min stirs at low speed rate 50r/min ± 5r/min, and vacuum degree 0.02~
0.05MPa, 60 ± 2min of time, temperature are controlled at 25 ± 5 DEG C, are dispersed with stirring uniformly up to refractory metal glue.
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|---|---|---|---|---|
| CN108071665A (en) * | 2017-12-07 | 2018-05-25 | 大连理工大学 | spiral groove type radial gas dynamic pressure foil bearing |
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