CN106224385A - A kind of subdivision self-aligning roller bearing and the processing method of retainer - Google Patents
A kind of subdivision self-aligning roller bearing and the processing method of retainer Download PDFInfo
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- CN106224385A CN106224385A CN201610793460.3A CN201610793460A CN106224385A CN 106224385 A CN106224385 A CN 106224385A CN 201610793460 A CN201610793460 A CN 201610793460A CN 106224385 A CN106224385 A CN 106224385A
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/34—Rollers; Needles
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
- C23C8/58—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions more than one element being applied in more than one step
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a kind of subdivision self-aligning roller bearing and the processing method of retainer, including spherical roller, outer ring, retainer, tight loop, inner ring, retainer lid and shading ring；Being respectively equipped with raceway on outer ring and inner ring, each retainer is installed string spherical roller, the retainer being provided with spherical roller is arranged between inner ring and outer ring, is provided with shading ring between two retainers；Being provided with retainer lid outside retainer, retainer is connected by hexagon socket head cap screw is fixing with retainer lid；Inner ring both sides are provided with tight loop, and tight loop is provided with hexagon socket head cap screw；Retainer uses structural steel to make；Retainer uses special process to process, and technological principle is simple, and operating process is flexible, and processed low cost, quality is good, and the surface soundness of its product and wearability are good, environmental friendliness.
Description
Technical field
The present invention relates to field of bearings, particularly relate to a kind of subdivision self-aligning roller bearing and the processing method of retainer.
Background technology
The processing method of subdivision self-aligning roller bearing and retainer is big due to its radial direction bearing capacity, under same width,
This bearing, compared with traditional band retainer bearing, has high bearing capacity, and radial section is little, can save space,
Be applicable to bear heavy load and impact load, cylinder roller bearing to bear radial load, part Internal and external cycle all band ribs
Bearing can bear certain axial force.In order to be able to bear bigger radial load, full cylindrical roller axle can be designed and manufactured into
Hold.
At present, completely cylinder roller bearing is in use, when roller is through non-bearing district, and meeting between two adjacent rollers
Colliding and produce collision sound, the occasion tighter at noise requirements can not meet use requirement.
Summary of the invention
It is an object of the invention to provide one and be avoided that cylindrical roller collides, subdivision self-aligning roller bearing that noise is low and guarantor
Hold the processing method of frame.
For achieving the above object, the invention provides following scheme: a kind of subdivision self-aligning roller bearing and the place of retainer
Reason method, including spherical roller 8, outer ring 4, retainer 3, tight loop 2, inner ring 1, retainer lid 9 and shading ring 7；Described outer ring 4
Be respectively equipped with raceway on described inner ring 1, each described retainer 3 is installed spherical roller 8 described in string, sphere rolling is installed
The described retainer 3 of son 8 is arranged between described inner ring 1 and described outer ring 4, is provided with described between two described retainers 3
Shading ring 7；Being provided with described retainer lid 9 outside described retainer 3, described retainer 3 and described retainer lid 9 are by interior hexagonal
Bolt is fixing to be connected；Described inner ring 1 both sides are provided with described tight loop 2, and described tight loop 2 is provided with hexagon socket head cap screw.
Optionally, described retainer uses structural steel to make.
Optionally, the processing method of described retainer, comprise the following steps:
(1), nitrogen treatment: steel bearings retainer 3 is preheated in air furnace, its metal at a temperature of 250～330 DEG C
Surface and the oxygen generation oxidation reaction in air, generate the oxide of ferrum, and oxidation can promote the infiltration of nitrogen in subsequent treatment, favorably
Formation in nitride；Through retainer 3 surface ratio of oxidation processes without the degree of depth of surfaces nitrided infiltration layer processed
Deeper；Preheating time is 20～25min, can form thicker oxide layer long preheating time, unfavorable to subsequent treatment, preheating
Retainer 3 appearance uniform also can be made consistent, do not produce surface defect；Then steel bearings retainer 3 is put into 680～
Stopping 80～12min in the nitridation base salt bath of 750 DEG C, nitridation base salt includes the multiple carbonate of K2CO3 and the mixture of carbamide,
Under high temperature, both synthesis make to be formed in its salt bath the cyanate radical of more than 35%, and cyanate radical is decomposed at the working temperature, produces
Activated nitrogen atom penetrates into metal surface, forms compound layer and diffusion layer, and wherein compound layer is Fe3N or Fe4N, simultaneously cyanic acid
Root decomposes the CO produced and decomposites carbon atom infiltration retainer 3 surface, forms carbide or solid solution；Nitridation base salt high temperature
The cyanogen root that fusing exists, by supplementary adjustment salt mode, adjusts nitridation base salt, and its composition is organic condensation thing, is changed by CO32-
For CNO-, it is allowed to return to original cyanate radical state, activity recovery, prevents public hazards；Retainer 3 oozes in salt bath
The forming process of layer is penetrated into as rule with common element, including decomposing, adsorbing and diffusion process；First it is to decompose, cyanic acid
Root, under the operating temperature of nitridation base salt, decomposites atom N and the carbon atom of activity, and the height of activated nitrogen atom concentration depends on
Nitrogenize height and the height of nitriding temperature of cyanate radical content in base salt salt bath；Next to that absorption, be activated nitrogen atom and carbon former
Son adsorbs to metal surface, and the concentration of metal surface nitrogen gradually rises, and forms concentration difference with metal surface, and this concentration difference can promote
Nitrogen-atoms and carbon atom is made to spread to metal inside；It is finally diffusion, the radius of the radius ratio iron atom of nitrogen-atoms and carbon atom
Little, nitrogen-atoms and carbon atom are diffused in the dot matrix gap of iron atom；
(2), oxidation processes: after nitrogen treatment terminates, retainer 3 is put into the saline oxide salt bath of 425～500 DEG C
Middle stop 5～10min, then carries out cold water flush；Saline oxide is sent out with the cyanogen root in the nitridation base salt of trace on retainer 3
Raw oxidation reaction, generates cyanate radical, then uses cold water to be rinsed, and after flushing, in water, cyanogen radical content is wanted less than discharge standard
Ask, will not be to environment, retainer 3 is natural drying or dry up after flowing water cleans；Retainer 3 is at warp
Crossing and can form oxide-film on surface during insulation in saline oxide salt bath after nitridation operation processes, oxide-film is the oxide of ferrum
Fe3O4, is the black oxide of a kind of densification, can be effectively improved the corrosion resistance of ferrous materials；
(3), light decorations or polishing: after nitridation and oxidation processes, retainer 3 is put into light decorations or polissoir
In, after mixing with abrasive material or light exterior material, under vibration or rotation status, retainer 3 surface is processed by shot blasting, disappears
Except the weaker zone impact on retainer 3 surface quality；Retainer 3 level is put into equipped with in the container of machining medium, logical
Cross the gyration of main shaft and the reciprocating motion of container, make to produce between abrading block and retainer 3 surface certain relative motion and
Interaction force, free abrading block produces collision, rolling, swiping and the micro cutting effect of delineation to surface of the work, it is achieved right
The deburring of retainer 3 and surface finishing, improve surface quality, improve physical and mechanical property；In abrading block and holding
The ART powder body material of the nano level ore powder compositions being made up of hydroxy silicate component, this powder body material is added between frame 3
Material is the mixture that multiple natural crystal superfine powder adds catalyst, has no side effect, and chemical analysis is stable at normal temperatures；Logical
Cross oil, oils and fats, water, gas and chemical composition coating variety carrier by the ART powder conveying of trace to metal friction surface, in friction
Under the effect of power, carry out hyperfine abrasive while cleaning friction surface, utilize fricative TRANSIENT HIGH TEMPERATURE high pressure and ultra-fine
Metal worn particle occur micro-metallurgical process；Form metalloid pottery at metal friction surface and breed layer, with the continuous expansion of mill speckle,
Ultimately form metalloid micro-crystalline ceramic protective layer；Whole process be at metal friction surface dynamically, self-regulated save land, constantly,
Repair selectively and the fretting wear of compensation payment metal surface；Along with the continuous formation of metalloid micro-crystalline ceramic layer, abrasion is not
Breaking and be compensated, friction surface roughness value reduces, and the energy making friction discharge reduces, finally under the conditions of losing thermokinetics
Selfreparing stops, and metallic rubbing pairs now, by the friction of metallized metal, changes over metalloid micro-crystalline ceramic layer eka-gold
Belong to the friction of micro-crystalline ceramic layer；
(4), reoxidation process: again the retainer 3 after polishing is put into 425～500 DEG C and step
(2) in identical saline oxide salt bath, stopping 30～50min, then carry out cold water flush, retainer 3 cleans through flowing water
Rear natural drying or dry up；Retainer 3 surface after reoxidation processes forms fine and close oxide layer, and oxide layer is ferrum
Oxide Fe3O4, is the black oxide of a kind of densification, can be effectively improved the corrosion resistance of ferrous materials；Reoxidation processes
Not only form oxide layer on the surface of workpiece, but also some oxygen atom dissolves in compound lattice with gap form, makes
Surface passivation, improves the corrosion resistance on surface.
The specific embodiment provided according to the present invention, the invention discloses techniques below effect:
1, the contact angle of spherical roller is added, the corresponding length increasing spherical roller, strengthen the rated load of bearing
Ability, improves the overall performance of bearing, expands the range of bearing.
2, reduce the diameter of outer ring raceway, consequently reduce the weight of bearing, increase the diameter of spherical roller, from
And improve the bearing capacity of bearing, increase the service life of bearing.
3, use fixing structure at tight loop internal diameter and bearing inner race little rib outer diameter contact, be possible to prevent tight loop because of axle
Holding inner ring whirling vibration landing, tight loop material uses GCrl5SiMn high-carbon-chromium bearing steel, increases part strength, reduces part
Size, be also convenient for bearing block upper cover folding.
4, the process technological principle of retainer is simple, and operating process is flexible, and processed low cost, quality is good, its product
Surface soundness and wearability good, environmental friendliness.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only some enforcements of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to these accompanying drawings
Obtain other accompanying drawing.
Fig. 1 is present configuration schematic diagram；
In figure, 1, inner ring 2, tight loop 3, retainer 4, outer ring 5, oilhole 6, oil duct 7, shading ring 8, sphere rolling
Son 9, retainer lid.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
It is an object of the invention to provide a kind of subdivision self-aligning roller bearing and the processing method of retainer, a kind of subdivision regulation of mental activities
Roller bearing and the processing method of retainer, including spherical roller 8, outer ring 4, retainer 3, tight loop 2, inner ring 1, retainer lid
9 and shading ring 7；It is respectively equipped with raceway on described outer ring 4 and described inner ring 1, each described retainer 3 is installed ball described in string
Face roller 8, the described retainer 3 being provided with spherical roller 8 is arranged between described inner ring 1 and described outer ring 4, two described guarantors
Hold and between frame 3, be provided with described shading ring 7；Being provided with described retainer lid 9 outside described retainer 3, described retainer 3 is with described
Retainer lid 9 connects by hexagon socket head cap screw is fixing；Described inner ring 1 both sides are provided with described tight loop 2, on described tight loop 2
It is provided with hexagon socket head cap screw.
Described retainer uses structural steel to make.
The processing method of described retainer, comprises the following steps:
(1), nitrogen treatment: steel bearings retainer 3 is preheated in air furnace, its metal at a temperature of 250～330 DEG C
Surface and the oxygen generation oxidation reaction in air, generate the oxide of ferrum, and oxidation can promote the infiltration of nitrogen in subsequent treatment, favorably
Formation in nitride；Through retainer 3 surface ratio of oxidation processes without the degree of depth of surfaces nitrided infiltration layer processed
Deeper；Preheating time is 20～25min, can form thicker oxide layer long preheating time, unfavorable to subsequent treatment, preheating
Retainer 3 appearance uniform also can be made consistent, do not produce surface defect；Then steel bearings retainer 3 is put into 680～
Stopping 80～12min in the nitridation base salt bath of 750 DEG C, nitridation base salt includes the multiple carbonate of K2CO3 and the mixture of carbamide,
Under high temperature, both synthesis make to be formed in its salt bath the cyanate radical of more than 35%, and cyanate radical is decomposed at the working temperature, produces
Activated nitrogen atom penetrates into metal surface, forms compound layer and diffusion layer, and wherein compound layer is Fe3N or Fe4N, simultaneously cyanic acid
Root decomposes the CO produced and decomposites carbon atom infiltration retainer 3 surface, forms carbide or solid solution；Nitridation base salt high temperature
The cyanogen root that fusing exists, by supplementary adjustment salt mode, adjusts nitridation base salt, and its composition is organic condensation thing, is changed by CO32-
For CNO-, it is allowed to return to original cyanate radical state, activity recovery, prevents public hazards；Retainer 3 oozes in salt bath
The forming process of layer is penetrated into as rule with common element, including decomposing, adsorbing and diffusion process；First it is to decompose, cyanic acid
Root, under the operating temperature of nitridation base salt, decomposites atom N and the carbon atom of activity, and the height of activated nitrogen atom concentration depends on
Nitrogenize height and the height of nitriding temperature of cyanate radical content in base salt salt bath；Next to that absorption, be activated nitrogen atom and carbon former
Son adsorbs to metal surface, and the concentration of metal surface nitrogen gradually rises, and forms concentration difference with metal surface, and this concentration difference can promote
Nitrogen-atoms and carbon atom is made to spread to metal inside；It is finally diffusion, the radius of the radius ratio iron atom of nitrogen-atoms and carbon atom
Little, nitrogen-atoms and carbon atom are diffused in the dot matrix gap of iron atom；
(2), oxidation processes: after nitrogen treatment terminates, retainer 3 is put into the saline oxide salt bath of 425～500 DEG C
Middle stop 5～10min, then carries out cold water flush；Saline oxide is sent out with the cyanogen root in the nitridation base salt of trace on retainer 3
Raw oxidation reaction, generates cyanate radical, then uses cold water to be rinsed, and after flushing, in water, cyanogen radical content is wanted less than discharge standard
Ask, will not be to environment, retainer 3 is natural drying or dry up after flowing water cleans；Retainer 3 is at warp
Crossing and can form oxide-film on surface during insulation in saline oxide salt bath after nitridation operation processes, oxide-film is the oxide of ferrum
Fe3O4, is the black oxide of a kind of densification, can be effectively improved the corrosion resistance of ferrous materials；
(3), light decorations or polishing: after nitridation and oxidation processes, retainer 3 is put into light decorations or polissoir
In, after mixing with abrasive material or light exterior material, under vibration or rotation status, retainer 3 surface is processed by shot blasting, disappears
Except the weaker zone impact on retainer 3 surface quality；Retainer 3 level is put into equipped with in the container of machining medium, logical
Cross the gyration of main shaft and the reciprocating motion of container, make to produce between abrading block and retainer 3 surface certain relative motion and
Interaction force, free abrading block produces collision, rolling, swiping and the micro cutting effect of delineation to surface of the work, it is achieved right
The deburring of retainer 3 and surface finishing, improve surface quality, improve physical and mechanical property；In abrading block and holding
The ART powder body material of the nano level ore powder compositions being made up of hydroxy silicate component, this powder body material is added between frame 3
Material is the mixture that multiple natural crystal superfine powder adds catalyst, has no side effect, and chemical analysis is stable at normal temperatures；Logical
Cross oil, oils and fats, water, gas and chemical composition coating variety carrier by the ART powder conveying of trace to metal friction surface, in friction
Under the effect of power, carry out hyperfine abrasive while cleaning friction surface, utilize fricative TRANSIENT HIGH TEMPERATURE high pressure and ultra-fine
Metal worn particle occur micro-metallurgical process；Form metalloid pottery at metal friction surface and breed layer, with the continuous expansion of mill speckle,
Ultimately form metalloid micro-crystalline ceramic protective layer；Whole process be at metal friction surface dynamically, self-regulated save land, constantly,
Repair selectively and the fretting wear of compensation payment metal surface；Along with the continuous formation of metalloid micro-crystalline ceramic layer, abrasion is not
Breaking and be compensated, friction surface roughness value reduces, and the energy making friction discharge reduces, finally under the conditions of losing thermokinetics
Selfreparing stops, and metallic rubbing pairs now, by the friction of metallized metal, changes over metalloid micro-crystalline ceramic layer eka-gold
Belong to the friction of micro-crystalline ceramic layer；
(4), reoxidation process: again the retainer 3 after polishing is put into 425～500 DEG C and step
(2) in identical saline oxide salt bath, stopping 30～50min, then carry out cold water flush, retainer 3 cleans through flowing water
Rear natural drying or dry up；Retainer 3 surface after reoxidation processes forms fine and close oxide layer, and oxide layer is ferrum
Oxide Fe3O4, is the black oxide of a kind of densification, can be effectively improved the corrosion resistance of ferrous materials；Reoxidation processes
Not only form oxide layer on the surface of workpiece, but also some oxygen atom dissolves in compound lattice with gap form, makes
Surface passivation, improves the corrosion resistance on surface.
Principle and the embodiment of the present invention are set forth by specific case used herein, saying of above example
Bright method and the core concept thereof being only intended to help to understand the present invention；Simultaneously for one of ordinary skill in the art, foundation
The thought of the present invention, the most all will change.In sum, this specification content is not
It is interpreted as limitation of the present invention.
Claims (3)
1. a subdivision self-aligning roller bearing and the processing method of retainer, it is characterised in that: include spherical roller (8), outer ring
(4), retainer (3), tight loop (2), inner ring (1), retainer lid (9) and shading ring (7)；Described outer ring (4) and described inner ring
(1) being respectively equipped with raceway on, each described retainer (3) is upper installs spherical roller (8) described in string, is provided with spherical roller
(8) described retainer (3) is arranged between described inner ring (1) and described outer ring (4), sets between two described retainers (3)
It is equipped with described shading ring (7)；Described retainer (3) outside is provided with described retainer lid (9), described retainer (3) and described guarantor
Hold frame lid (9) to connect by hexagon socket head cap screw is fixing；Described inner ring (1) both sides are provided with described tight loop (2), described tight loop
(2) it is provided with hexagon socket head cap screw.
Subdivision self-aligning roller bearing the most according to claim 1 and the processing method of retainer, it is characterised in that: described guarantor
Holding frame (3) uses structural steel to make.
Subdivision self-aligning roller bearing the most according to claim 1 and the processing method of retainer, it is characterised in that: described guarantor
Hold the processing method of frame, comprise the following steps:
(1), nitrogen treatment: steel bearings retainer (3) is preheated in air furnace, its metal watch at a temperature of 250～330 DEG C
Face and the oxygen generation oxidation reaction in air, generate the oxide of ferrum, and oxidation can promote the infiltration of nitrogen in subsequent treatment, is conducive to
The formation of nitride；Through retainer (3) surface ratio of oxidation processes without the degree of depth of surfaces nitrided infiltration layer processed
Deeper；Preheating time is 20～25min, can form thicker oxide layer long preheating time, unfavorable to subsequent treatment, preheating
Retainer (3) appearance uniform also can be made consistent, do not produce surface defect；Then steel bearings retainer (3) is put into 680
～the nitridation base salt bath of 750 DEG C stops 80～12min, nitridation base salt includes the multiple carbonate of K2CO3 and the mixing of carbamide
Thing, under high temperature, both synthesis make to be formed in its salt bath the cyanate radical of more than 35%, and cyanate radical is decomposed at the working temperature, produces
Liveliness proof nitrogen-atoms penetrates into metal surface, forms compound layer and diffusion layer, and wherein compound layer is Fe3N or Fe4N, simultaneously cyanogen
Acid group decomposes the CO produced and decomposites carbon atom infiltration retainer (3) surface, forms carbide or solid solution；Nitridation base salt
The cyanogen root that high temperature melting exists, by supplementary adjustment salt mode, adjusts nitridation base salt, and its composition is organic condensation thing, by CO32-
It is changed into CNO-, is allowed to return to original cyanate radical state, activity recovery, prevents public hazards；Retainer (3) is at salt
In bath, the forming process of infiltration layer is penetrated into as rule with common element, including decomposing, adsorbing and diffusion process；First it is point
Solving, cyanate radical, under the operating temperature of nitridation base salt, decomposites atom N and carbon atom, the height of activated nitrogen atom concentration of activity
Low height and the height of nitriding temperature depending on nitrogenizing cyanate radical content in base salt salt bath；Next to that absorption, it is that active nitrogen is former
Son and carbon atom adsorb to metal surface, and the concentration of metal surface nitrogen gradually rises, and form concentration difference with metal surface, this dense
Degree difference can promote nitrogen-atoms and carbon atom to spread to metal inside；Being finally diffusion, the radius ratio ferrum of nitrogen-atoms and carbon atom is former
The radius of son is little, and nitrogen-atoms and carbon atom are diffused in the dot matrix gap of iron atom；
(2), oxidation processes: after nitrogen treatment terminates, retainer (3) is put in the saline oxide salt bath of 425～500 DEG C
Stop 5～10min, then carry out cold water flush；Cyanogen root in the nitridation base salt of saline oxide trace upper with retainer (3) is sent out
Raw oxidation reaction, generates cyanate radical, then uses cold water to be rinsed, and after flushing, in water, cyanogen radical content is wanted less than discharge standard
Ask, will not be to environment, retainer (3) is natural drying or dry up after flowing water cleans；Retainer (3)
Can form oxide-film on surface when insulation in saline oxide salt bath after nitrogenizing operation and processing, oxide-film is the oxide of ferrum
Fe3O4, is the black oxide of a kind of densification, can be effectively improved the corrosion resistance of ferrous materials；
(3), light decorations or polishing: nitridation and oxidation processes after, retainer (3) is put into light decorations or polissoir in,
After mixing with abrasive material or light exterior material, under vibration or rotation status, retainer (3) surface is processed by shot blasting, eliminates
The weaker zone impact on retainer (3) surface quality；Retainer (3) level is put into equipped with in the container of machining medium,
By gyration and the reciprocating motion of container of main shaft, make between abrading block with retainer (3) surface, to produce certain relative fortune
Moving and interaction force, free abrading block produces collision, rolling, swiping and the micro cutting effect of delineation to surface of the work, real
Now deburring and the surface finishing to retainer (3), improves surface quality, improves physical and mechanical property；At abrading block
And between retainer (3), add the ART powder body material of the nano level ore powder compositions being made up of hydroxy silicate component,
This powder body material is the mixture that multiple natural crystal superfine powder adds catalyst, has no side effect, and chemistry becomes at normal temperatures
Part is stable；By oil, oils and fats, water, gas and chemical composition coating variety carrier by the ART powder conveying of trace to metal friction table
Face, under the effect of frictional force, carries out hyperfine abrasive while cleaning friction surface, utilizes fricative TRANSIENT HIGH TEMPERATURE high
There is micro-metallurgical process in pressure and ultra-fine metal worn particle；Form metalloid pottery at metal friction surface and breed layer, with mill speckle
Constantly expand, ultimately form metalloid micro-crystalline ceramic protective layer；Whole process be at metal friction surface dynamically, self-regulation
Ground, constantly, selectively repair and the fretting wear of compensation payment metal surface；Continuous shape along with metalloid micro-crystalline ceramic layer
One-tenth, abrasion is continuously available compensation, and friction surface roughness value reduces, and the energy making friction discharge reduces, and is finally losing hot moving
Under mechanical condition, selfreparing stops, and metallic rubbing pairs now, by the friction of metallized metal, changes over metalloid crystallite pottery
The friction of enamel coating metalloid micro-crystalline ceramic layer；
(4), reoxidation process: again the retainer (3) after polishing is put into 425～500 DEG C with step (2)
In identical saline oxide salt bath, stopping 30～50min, then carry out cold water flush, retainer (3) is after flowing water cleans
Natural drying or dry up；Retainer (3) surface after reoxidation processes forms fine and close oxide layer, and oxide layer is ferrum
Oxide Fe3O4, is the black oxide of a kind of densification, can be effectively improved the corrosion resistance of ferrous materials；Reoxidation processes
Not only form oxide layer on the surface of workpiece, but also some oxygen atom dissolves in compound lattice with gap form, makes
Surface passivation, improves the corrosion resistance on surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610793460.3A CN106224385A (en) | 2016-08-31 | 2016-08-31 | A kind of subdivision self-aligning roller bearing and the processing method of retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610793460.3A CN106224385A (en) | 2016-08-31 | 2016-08-31 | A kind of subdivision self-aligning roller bearing and the processing method of retainer |
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| Publication Number | Publication Date |
|---|---|
| CN106224385A true CN106224385A (en) | 2016-12-14 |
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| CN201610793460.3A Pending CN106224385A (en) | 2016-08-31 | 2016-08-31 | A kind of subdivision self-aligning roller bearing and the processing method of retainer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114086109A (en) * | 2021-11-22 | 2022-02-25 | 湖南能岦新材料科技有限公司 | Novel environment-friendly anticorrosion high-efficiency BSB metal surface treatment method |
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| CN103276346A (en) * | 2013-05-06 | 2013-09-04 | 青岛泰德汽车轴承有限责任公司 | Processing method of metal bearing retainer |
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| US4199203A (en) * | 1977-10-18 | 1980-04-22 | Skf Nova Ab | Outer race ring centered retainer for rolling bearings |
| CN201100316Y (en) * | 2007-09-14 | 2008-08-13 | 无锡市滚动轴承有限公司 | A long internal ring center-adjusting roller bearing |
| CN201100314Y (en) * | 2007-09-14 | 2008-08-13 | 无锡市滚动轴承有限公司 | Center-adjusting roller bearing with acentric cover |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114086109A (en) * | 2021-11-22 | 2022-02-25 | 湖南能岦新材料科技有限公司 | Novel environment-friendly anticorrosion high-efficiency BSB metal surface treatment method |
| CN114086109B (en) * | 2021-11-22 | 2024-07-05 | 湖南能岦新材料科技有限公司 | Environment-friendly anti-corrosion high-efficiency BSB metal surface treatment method |
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Application publication date: 20161214 |