CN108823523A - A method of it is modified to taper roller surface using taper roller thermo-chemical treatment special tooling - Google Patents
A method of it is modified to taper roller surface using taper roller thermo-chemical treatment special tooling Download PDFInfo
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- CN108823523A CN108823523A CN201810767906.4A CN201810767906A CN108823523A CN 108823523 A CN108823523 A CN 108823523A CN 201810767906 A CN201810767906 A CN 201810767906A CN 108823523 A CN108823523 A CN 108823523A
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- taper roller
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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
- 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
- C23C8/06—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 gases
- C23C8/08—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 gases only one element being applied
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
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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
- 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
- C23C8/06—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 gases
- C23C8/08—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 gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
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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
- 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
- C23C8/06—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 gases
- C23C8/28—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 gases more than one element being applied in one step
- C23C8/30—Carbo-nitriding
- C23C8/32—Carbo-nitriding of ferrous surfaces
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
A method of modified to taper roller surface using taper roller thermo-chemical treatment special tooling, it is related to the method that a kind of pair of taper roller surface is modified.Taper roller puts intensively when the invention aims to solve to be modified taper roller using existing tooling, atmosphere is influenced sufficiently to flow, contact surface is excessive between taper roller and tooling, causes infiltration layer uneven and the non-uniform problem of infiltration layer with batch taper roller.Method：One, blade type bracket is processed using Steel material；Two, taper roller thermo-chemical treatment special tooling is assembled；Three, multiple taper rollers are placed on taper roller thermo-chemical treatment special tooling；Four, surface is carried out to multiple taper rollers on taper roller thermo-chemical treatment special tooling using surface modifying apparatus to be modified, obtain the modified taper roller in surface.The present invention is suitable for modified to taper roller surface.
Description
Technical field
The present invention relates to the methods that a kind of pair of taper roller surface is modified.
Background technique
Parts of bearings is the essential generalization standardization components of mechanical equipment, is had wide range of applications, social demand
It measures huge.The mechanical performance needs of parts of bearings are up to standard, but due to the technical restriction of tooling, at present to the rolling element of rolling bearing
The modified requirement that technology is not achieved in the surface of taper roller, therefore, the surface modification of taper roller are not applied, wherein right
Taper roller carry out nitrogen treatment when there are the problem of it is specific as follows：
(1), taper roller is put intensive, influences atmosphere and sufficiently flows, causes the surface modification of shielding surface insufficient；
(2), between taper roller and taper roller, contact surface is excessive between taper roller and tooling, leads to same circular cone
Roller infiltration layer is uneven；
(3), charging basket depth is at least several times or more of taper roller diameter (large end face), influences basket wall taper roller nearby
Surface modification effect, lead to the uneven of same batch taper roller infiltration layer；
To taper roller carry out when carburizing or cyaniding are handled there are the problem of it is specific as follows：
(1), taper roller is put intensive, influences atmosphere and sufficiently flows, causes the carburizing of shielding surface or cyaniding insufficient；
(2), between taper roller and taper roller, contact surface is excessive between taper roller and tooling, leads to same circular cone
Roller infiltration layer is uneven；
(3), charging basket depth is at least several times or more of taper roller diameter (large end face), influences basket wall taper roller nearby
Carburizing or cyaniding effect, lead to the uneven of same batch taper roller infiltration layer.
Summary of the invention
When the invention aims to solve to be modified taper roller using existing tooling taper roller put it is close
Collection, influences atmosphere and sufficiently flows, and contact surface is excessive between taper roller and tooling, causes infiltration layer uneven and rolls with batch circular cone
The non-uniform problem of infiltration layer of son, and provide and a kind of taper roller surface is changed using taper roller thermo-chemical treatment special tooling
The method of property.
A method of it is modified to taper roller surface using taper roller thermo-chemical treatment special tooling, it is by following step
Suddenly it completes：
One, blade type bracket is processed using Steel material；
The section of blade type bracket described in step 1 is obtuse triangle；
Two, two blade type bracket parallel side-by-sides are arranged in the working region of surface modifying apparatus, and two blade type branch
The cutting edge of frame is oppositely arranged, and angle of the opposite blade face between inclined surface, with horizontal plane is α in two blade type brackets, and α is small
In equal to 90 °；The distance between two blade type bracket cutting edges are adjusted, are placed on taper roller between two blade type brackets, and
With two blade type bracket edge contacts, taper roller thermo-chemical treatment special tooling is obtained；
Three, multiple taper rollers are placed on taper roller thermo-chemical treatment special tooling, and every two taper roller
The distance between be not less than 30mm；
Four, table is carried out to multiple taper rollers on taper roller thermo-chemical treatment special tooling using surface modifying apparatus
Face is modified, obtains the modified taper roller in surface, that is, complete it is a kind of using taper roller thermo-chemical treatment special tooling to circle
Bore the modified method of roller surface；
Surface described in step 4 is modified as nitrogen treatment, Carburization Treatment or cyaniding processing.
Beneficial effects of the present invention：
One, using method of the invention, although being still point contact between taper roller and tooth shape bracket, because of tooth shape bracket
The reason of cutting edge is sharp, and contact point is small, and activated carbon, carbon and the nitrogen-atoms penetrated into around contact point is because of carbon, carbon and nitrogen concentration gradients,
It quickly diffuses to contacting points position, ensure that the carburizing at contact point or the infiltration layer consistency problem during cyanidation technology；
Two, using method of the invention, although being still point contact between taper roller and tooth shape bracket, because of tooth shape bracket
The reason of cutting edge is sharp, and contact point is small, and the activated nitrogen atom penetrated into around contact point is because of nitrogen concentration gradients quickly diffuses to contact
Point position, ensure that the infiltration layer consistency problem during the nitriding process at contact point；
Three, surface is carried out to taper roller using taper roller thermo-chemical treatment special tooling of the invention to be modified, reduce
The geometric space screen effect of taper roller for seep guarantees carburizing or the abundant flowing of cyaniding atmosphere, keeps taper roller abundant
With carburizing/cyaniding atmosphere, guarantee that the depth of penetration of modified taper roller is uniform；
Four, surface is carried out to taper roller using taper roller thermo-chemical treatment special tooling of the invention to be modified, reduce
The geometric space screen effect of taper roller to be processed, guarantees the abundant flowing of nitriding atmosphere, makes taper roller sufficiently and nitrogen
Change atmosphere, ensure that the nitride layer depth of modified taper roller is uniform；
Five, the present invention using taper roller thermo-chemical treatment special tooling to taper roller nitrogen treatment, taper roller
Infiltration layer is 0.1mm~0.14mm, and nitridation uniformity is ± 0.02mm；
Six, the present invention is handled taper roller Carburization Treatment or cyaniding using taper roller thermo-chemical treatment special tooling,
The infiltration layer of taper roller is 0.9mm~1mm, and infiltration layer uniformity is ± 0.05mm.
The present invention is suitable for modified to taper roller surface.
Detailed description of the invention
Fig. 1 is the front view of the blade type bracket described in step 1 of embodiment one；
Fig. 2 is the top view of the blade type bracket described in step 1 of embodiment one；
Fig. 3 is that two taper rollers are placed on taper roller thermo-chemical treatment special tooling in one step 3 of embodiment
Front view, 1 be blade type bracket, 2 be taper roller；
Fig. 4 is that two taper rollers are placed on taper roller thermo-chemical treatment special tooling in one step 3 of embodiment
Top view.
Specific embodiment
Specific embodiment one：Present embodiment be it is a kind of using taper roller thermo-chemical treatment special tooling to circular cone roll
The modified method in sublist face, is completed by the following steps：
One, blade type bracket is processed using Steel material；
The section of blade type bracket described in step 1 is obtuse triangle；
Two, two blade type bracket parallel side-by-sides are arranged in the working region of surface modifying apparatus, and two blade type branch
The cutting edge of frame is oppositely arranged, and angle of the opposite blade face between inclined surface, with horizontal plane is α in two blade type brackets, and α is small
In equal to 90 °；The distance between two blade type bracket cutting edges are adjusted, are placed on taper roller between two blade type brackets, and
With two blade type bracket edge contacts, taper roller thermo-chemical treatment special tooling is obtained；
Three, multiple taper rollers are placed on taper roller thermo-chemical treatment special tooling, and every two taper roller
The distance between be not less than 30mm；
Four, table is carried out to multiple taper rollers on taper roller thermo-chemical treatment special tooling using surface modifying apparatus
Face is modified, obtains the modified taper roller in surface, that is, complete it is a kind of using taper roller thermo-chemical treatment special tooling to circle
Bore the modified method of roller surface；
Surface described in step 4 is modified as nitrogen treatment, Carburization Treatment or cyaniding processing.
The beneficial effect of present embodiment：
One, using the method for present embodiment, although being still point contact between taper roller and tooth shape bracket, because of tooth shape branch
The cutting edge of frame is sharp, and contact point is small, and activated carbon, carbon and the nitrogen-atoms penetrated into around contact point is because of carbon, carbon and nitrogen concentration gradients
Reason quickly diffuses to contacting points position, ensure that the infiltration layer consistency during carburizing or cyanidation technology at contact point is asked
Topic；
Two, using the method for present embodiment, although being still point contact between taper roller and tooth shape bracket, because of tooth shape branch
The reason of cutting edge of frame is sharp, and contact point is small, and the activated nitrogen atom penetrated into around contact point is because of nitrogen concentration gradients, quickly diffuses to
Contacting points position ensure that the infiltration layer consistency problem during the nitriding process at contact point；
Three, surface is carried out to taper roller using the taper roller thermo-chemical treatment special tooling of present embodiment to be modified,
Reduce the geometric space screen effect of taper roller for seep, guarantees carburizing or the abundant flowing of cyaniding atmosphere, make taper roller
Sufficiently with carburizing/cyaniding atmosphere, guarantee that the depth of penetration of modified taper roller is uniform；
Four, surface is carried out to taper roller using the taper roller thermo-chemical treatment special tooling of present embodiment to be modified,
The geometric space screen effect for reducing taper roller to be processed guarantees the abundant flowing of nitriding atmosphere, keeps taper roller abundant
It is contacted with nitriding atmosphere, ensure that the nitride layer depth of modified taper roller is uniform；
Five, present embodiment is using taper roller thermo-chemical treatment special tooling to taper roller nitrogen treatment, circular cone rolling
The infiltration layer of son is 0.1mm~0.14mm, and nitridation uniformity is ± 0.02mm；
Six, present embodiment using taper roller thermo-chemical treatment special tooling to taper roller Carburization Treatment or cyaniding at
Reason, the infiltration layer of taper roller are 0.9mm~1mm, and infiltration layer uniformity is ± 0.05mm.
Present embodiment is suitable for modified to taper roller surface.
Specific embodiment two：The differences between this implementation mode and the specific implementation mode are that：Taper roller is put in step 2
It sets between two blade type brackets, and is point contact with the mode of two blade type bracket edge contacts.Other steps and specific reality
It is identical to apply mode one.
Specific embodiment three：One of present embodiment and specific embodiment one or two difference are：It is every in step 3
The distance between two taper rollers are 30mm~100mm.Other steps are the same as one or two specific embodiments.
Specific embodiment four：One of present embodiment and specific embodiment one to three difference are：It is every in step 3
The distance between two taper rollers are 30mm~50mm.Other steps are identical as specific embodiment one to three.
Specific embodiment five：One of present embodiment and specific embodiment one to four difference are：Institute in step 4
The technique for the nitrogen treatment stated is as follows：The surface modifying apparatus that nitrogen treatment uses is gas nitriding furnace, is being lower than 150 DEG C first
It is lower that ammonia is passed through into gas nitriding furnace, gas nitriding furnace is exhausted, the ammonia volume in gas nitriding furnace is reached
90% or logical ammonia 25min~35min into gas nitriding furnace；Gas nitriding furnace is warming up to 500 DEG C under ammonia atmosphere again
~520 DEG C, then 50h~60h is kept the temperature under conditions of ammonia atmosphere and temperature are 500 DEG C~520 DEG C, then cool to 150 with the furnace
DEG C or less come out of the stove, i.e., completion nitrogen treatment.Other steps are identical as specific embodiment one to four.
Specific embodiment six：One of present embodiment and specific embodiment one to five difference are：Institute in step 4
The technique for the Carburization Treatment stated is as follows：The surface modifying apparatus that Carburization Treatment uses be Ipsen vacuum cementation furnace, first to
It is passed through nitrogen in Ipsen vacuum cementation furnace, then Ipsen vacuum cementation furnace is heated to 740 DEG C~760 DEG C in a nitrogen atmosphere,
25min~35min is kept at being again 740 DEG C~760 DEG C in nitrogen atmosphere and temperature, then Ipsen vacuum cementation furnace is warming up to
890 DEG C~910 DEG C, then acetylene gas is passed through into Ipsen vacuum cementation furnace, the flow of acetylene gas is 1000L/h, then in second
Alkynes atmosphere and temperature keep the temperature 4h~6h under conditions of being 890 DEG C~910 DEG C, then cool to 60 DEG C or less with the furnace and come out of the stove, that is, complete
Carburization Treatment.Other steps are identical as specific embodiment one to five.
Specific embodiment seven：One of present embodiment and specific embodiment one to six difference are：Institute in step 4
The technique for the cyaniding processing stated is as follows：The surface modifying apparatus that cyaniding processing uses is shaft furnace, is passed through first into shaft furnace
Kerosene and ammonia, the intake of kerosene are 10mL/min, and furnace pressure is 0.1MPa in shaft furnace, under ammonia atmosphere by shaft furnace from
Room temperature keeps the temperature 4h~5h to 830 DEG C~850 DEG C, then at being 830 DEG C~850 DEG C in ammonia atmosphere and temperature, then cold with furnace
But it comes out of the stove to 150 DEG C or less, i.e. completion cyaniding processing.Other steps are identical as specific embodiment one to six.
Specific embodiment eight：One of present embodiment and specific embodiment one to seven difference are：Institute in step 4
When the surface stated is modified as nitrogen treatment, Steel material described in step 1 be GCr15, GCr15SiMn, 38CrMoAl,
One of 35Cr2Ni4MoA, 32Cr3MoE, M50 and M50NiL or in which several alloys.Other steps and specific embodiment party
Formula one to seven is identical.
Specific embodiment nine：One of present embodiment and specific embodiment one to eight difference are：Institute in step 4
When the surface stated is modified as Carburization Treatment, Steel material described in step 1 be Cr4Mo4V, W9Cr4V2Mo, W18Cr4V,
One of W6Mo5Cr4V2, Cr25Ni20Si, M50 and M50NiL or in which several alloys.Other steps and specific implementation
Mode one to eight is identical.
Specific embodiment ten：One of present embodiment and specific embodiment one to nine difference are：Institute in step 4
The surface stated be modified as cyaniding processing when, Steel material described in step 1 be Cr4Mo4V, W9Cr4V2Mo, W18Cr4V,
One of W6Mo5Cr4V2, Cr25Ni20Si, M50 and M50NiL or in which several alloys.Other steps and specific implementation
Mode one to nine is identical.
Beneficial effects of the present invention are verified using following embodiment：
Embodiment one：It is a kind of to be using method of the taper roller thermo-chemical treatment special tooling to the modification of taper roller surface
It completes according to the following steps：
One, blade type bracket is processed using Steel material；
Steel material described in step 1 is GCr15；
The section of blade type bracket described in step 1 is obtuse triangle；Three angles of obtuse triangle are respectively 45 °,
120 ° and 15 °；
Two, two blade type bracket parallel side-by-sides are arranged in the working region of surface modifying apparatus, and two blade type branch
The cutting edge of frame is oppositely arranged, and angle of the opposite blade face between inclined surface, with horizontal plane is α in two blade type brackets, and α is
60°；Adjust the distance between two blade type bracket cutting edges, be placed on taper roller between two blade type brackets, and with two
Blade type bracket cutting edge carries out point contact, obtains taper roller thermo-chemical treatment special tooling；
Three, two taper rollers are placed on taper roller thermo-chemical treatment special tooling, between two taper rollers
Distance be 50mm；
Four, table is carried out to two taper rollers on taper roller thermo-chemical treatment special tooling using surface modifying apparatus
Face is modified, obtains the modified taper roller in surface, that is, complete it is a kind of using taper roller thermo-chemical treatment special tooling to circle
Bore the modified method of roller surface；
Surface described in step 4 is modified as nitrogen treatment, and the technique of nitrogen treatment is as follows：The table that nitrogen treatment uses
Face modified device is gas nitriding furnace, is passed through ammonia into gas nitriding furnace at room temperature first, arranges gas nitriding furnace
Gas leads to ammonia 30min into gas nitriding furnace, then gas nitriding furnace is warming up to 510 DEG C under ammonia atmosphere, then in ammonia gas
Atmosphere and temperature keep the temperature 55h under conditions of being 510 DEG C, then cool to 150 DEG C or less with the furnace and come out of the stove, i.e. completion nitrogen treatment.
The material of taper roller described in one step 3 of embodiment is W9Cr4V2Mo.
The infiltration layer uniformity of the modified taper roller in surface is ± 0.02mm in embodiment one, and infiltration layer uniformity is preferable.
Fig. 1 is the front view of the blade type bracket described in step 1 of embodiment one；
α is 60 ° in Fig. 1, and β is 45 °.
Fig. 2 is the top view of the blade type bracket described in step 1 of embodiment one；
Fig. 3 is that two taper rollers are placed on taper roller thermo-chemical treatment special tooling in one step 3 of embodiment
Front view, 1 be blade type bracket, 2 be taper roller；
Fig. 4 is that two taper rollers are placed on taper roller thermo-chemical treatment special tooling in one step 3 of embodiment
Top view.
Claims (10)
1. a kind of method modified to taper roller surface using taper roller thermo-chemical treatment special tooling, it is characterised in that should
Method is completed by the following steps：
One, blade type bracket is processed using Steel material；
The section of blade type bracket described in step 1 is obtuse triangle；
Two, two blade type bracket parallel side-by-sides are arranged in the working region of surface modifying apparatus, and two blade type brackets
Cutting edge is oppositely arranged, and angle of the opposite blade face between inclined surface, with horizontal plane is α in two blade type brackets, and α is less than etc.
In 90 °；The distance between two blade type bracket cutting edges are adjusted, are placed on taper roller between two blade type brackets, and with two
A blade type bracket edge contacts obtain taper roller thermo-chemical treatment special tooling；
Three, multiple taper rollers are placed on taper roller thermo-chemical treatment special tooling, and between every two taper roller
Distance be not less than 30mm；
Four, surface is carried out to multiple taper rollers on taper roller thermo-chemical treatment special tooling using surface modifying apparatus to change
Property, obtain the modified taper roller in surface, that is, complete it is a kind of using taper roller thermo-chemical treatment special tooling to circular cone roll
The modified method in sublist face；
Surface described in step 4 is modified as nitrogen treatment, Carburization Treatment or cyaniding processing.
2. according to claim 1 a kind of modified to taper roller surface using taper roller thermo-chemical treatment special tooling
Method, it is characterised in that taper roller is placed between two blade type brackets in step 2, and with two blade type bracket cutting edges
The mode of contact is point contact.
3. according to claim 1 a kind of modified to taper roller surface using taper roller thermo-chemical treatment special tooling
Method, it is characterised in that in step 3 the distance between every two taper roller be 30mm~100mm.
4. a kind of utilization taper roller thermo-chemical treatment special tooling according to claim 1 or 3 is to taper roller surface
Modified method, it is characterised in that the distance between every two taper roller is 30mm~50mm in step 3.
5. according to claim 1 a kind of modified to taper roller surface using taper roller thermo-chemical treatment special tooling
Method, it is characterised in that the technique of nitrogen treatment described in step 4 is as follows：The surface modifying apparatus that nitrogen treatment uses
For gas nitriding furnace, it is passed through ammonia into gas nitriding furnace at lower than 150 DEG C first, gas nitriding furnace is exhausted, is made
Ammonia volume in gas nitriding furnace reaches 90% or leads to ammonia 25min~35min into gas nitriding furnace；Again in ammonia atmosphere
It is lower that gas nitriding furnace is warming up to 500 DEG C~520 DEG C, then kept the temperature under conditions of ammonia atmosphere and temperature are 500 DEG C~520 DEG C
50h~60h, then cool to 150 DEG C or less with the furnace and come out of the stove, that is, complete nitrogen treatment.
6. according to claim 1 a kind of modified to taper roller surface using taper roller thermo-chemical treatment special tooling
Method, it is characterised in that the technique of Carburization Treatment described in step 4 is as follows：The surface modifying apparatus that Carburization Treatment uses
For Ipsen vacuum cementation furnace, nitrogen is passed through into Ipsen vacuum cementation furnace first, then in a nitrogen atmosphere seeps Ipsen vacuum
Carbon stove heating keeps 25min~35min to 740 DEG C~760 DEG C, then at being 740 DEG C~760 DEG C in nitrogen atmosphere and temperature, then
Ipsen vacuum cementation furnace is warming up to 890 DEG C~910 DEG C, then is passed through acetylene gas, acetylene gas into Ipsen vacuum cementation furnace
The flow of body is 1000L/h, then keeps the temperature 4h~6h under conditions of acetylene atmosphere and temperature are 890 DEG C~910 DEG C, then cold with furnace
But it comes out of the stove to 60 DEG C or less, i.e. completion Carburization Treatment.
7. according to claim 1 a kind of modified to taper roller surface using taper roller thermo-chemical treatment special tooling
Method, it is characterised in that cyaniding described in step 4 processing technique it is as follows：Cyaniding handles the surface modifying apparatus used
For shaft furnace, kerosene and ammonia are passed through into shaft furnace first, the intake of kerosene is 10mL/min, and furnace pressure is in shaft furnace
0.1MPa by shaft furnace from room temperature to 830 DEG C~850 DEG C under ammonia atmosphere, then in ammonia atmosphere and temperature is 830 DEG C
4h~5h is kept the temperature at~850 DEG C, then cools to 150 DEG C or less with the furnace and comes out of the stove, i.e. completion cyaniding processing.
8. according to claim 1 a kind of modified to taper roller surface using taper roller thermo-chemical treatment special tooling
Method, it is characterised in that when surface described in step 4 is modified as nitrogen treatment, Steel material described in step 1 is
One of GCr15, GCr15SiMn, 38CrMoAl, 35Cr2Ni4MoA, 32Cr3MoE, M50 and M50NiL or in which several
Alloy.
9. according to claim 1 a kind of modified to taper roller surface using taper roller thermo-chemical treatment special tooling
Method, it is characterised in that when surface described in step 4 is modified as Carburization Treatment, Steel material described in step 1 is
One of Cr4Mo4V, W9Cr4V2Mo, W18Cr4V, W6Mo5Cr4V2, Cr25Ni20Si, M50 and M50NiL or in which several
Alloy.
10. a kind of utilization taper roller thermo-chemical treatment special tooling according to claim 1 changes taper roller surface
Property method, it is characterised in that surface described in step 4 be modified as cyaniding processing when, Steel material described in step 1 is
One of Cr4Mo4V, W9Cr4V2Mo, W18Cr4V, W6Mo5Cr4V2, Cr25Ni20Si, M50 and M50NiL or in which several
Alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810767906.4A CN108823523B (en) | 2018-07-12 | 2018-07-12 | Method for modifying surface of tapered roller by using special tool for chemical heat treatment of tapered roller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810767906.4A CN108823523B (en) | 2018-07-12 | 2018-07-12 | Method for modifying surface of tapered roller by using special tool for chemical heat treatment of tapered roller |
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| CN108823523A true CN108823523A (en) | 2018-11-16 |
| CN108823523B CN108823523B (en) | 2020-05-22 |
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| CN201810767906.4A Active CN108823523B (en) | 2018-07-12 | 2018-07-12 | Method for modifying surface of tapered roller by using special tool for chemical heat treatment of tapered roller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108842130A (en) * | 2018-07-12 | 2018-11-20 | 中国航发哈尔滨轴承有限公司 | A method of it is modified to spherical roller surface using spherical roller thermo-chemical treatment special tooling |
| CN111593293A (en) * | 2020-05-28 | 2020-08-28 | 湖南申亿五金标准件有限公司 | Nitriding device for pin shaft and pin shaft surface treatment method using nitriding device |
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