CN108048788A - Tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat treatment method - Google Patents

Tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat treatment method Download PDF

Info

Publication number
CN108048788A
CN108048788A CN201711444528.8A CN201711444528A CN108048788A CN 108048788 A CN108048788 A CN 108048788A CN 201711444528 A CN201711444528 A CN 201711444528A CN 108048788 A CN108048788 A CN 108048788A
Authority
CN
China
Prior art keywords
carbo
nitriding
carbon
tapered roller
charging tray
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711444528.8A
Other languages
Chinese (zh)
Inventor
于长鑫
孙晗
温少英
胡卫平
齐寅龙
李俊芝
罗晓秋
刘义强
姜德惠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd
Wafangdian Bearing Group Corp
Original Assignee
Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd
Wafangdian Bearing Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd, Wafangdian Bearing Group Corp filed Critical Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd
Priority to CN201711444528.8A priority Critical patent/CN108048788A/en
Publication of CN108048788A publication Critical patent/CN108048788A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C23C8/02—Pretreatment of the material to be coated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention belongs to bearing surface specially treated technical fields, are specifically tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat treatment method.The process is：Equipment choosing joint sealing formula carbo-nitriding multipurpose furnace；Carburizing medium：Methanol flow is 3 ~ 4 m3/h；N2Flow is 4 ~ 5 m3/h；High pressure N2For 0.58 m3/h；Propane is 1.3 ~ 1.5m3/h；Ammonia flow is the atmosphere of 0.25 ~ 0.45 m3/h；Technological parameter：Carbo-nitriding temperature is at 810 ~ 840 DEG C；It is divided into and burns carbon, heating, blends diffusion four-stage by force, is quenched again afterwards, high-pressure wash and temper；Disposing way：Conical bearing inner ring and outer ring are placed on charging tray downwards using big end, and one layer of lasso is only put on each charging tray, and charging tray is moved by the way of vertical lifting.Present invention process method realize the tapered roller bearing ring surface of high-carbon-chromium bearing steel carry out carbo-nitriding, and overcome during carbo-nitriding tapered roller bearing ring circular cone raceway deform the problem of, reduce its deflection.

Description

Tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat treatment method
Technical field
The invention belongs to bearing surface specially treated technical fields, are specifically tapered roller bearing ring high-carbon-chromium bearing steel carbon Nitrogen permeation heat treatment method.
Background technology
Taper roll bearing can bear based on radial load with axial united load, match in automobile axle wheel hub It uses, in bearing rotation process, inner and outer ring raceway with rolling element under alternation contact stress repeated action, shell by material surface Fall to wait fatigue failures, while after wheel hub bears excessive load with conical bearing, be plastically deformed, bearing is caused to scrap.And axis The problem of non-metallic inclusion unstable in steel is held in operation process, easily causes crackle, causes bearing to be scrapped.
High-carbon-chromium bearing steel carbon content is high, and carburizing can not be realized, while conical bearing is carrying out hot place due to shape issue During reason, it may appear that surface uneven heating is even, and vortes interference causes the problems such as infiltration layer is uneven and infiltration layer is thin.
The content of the invention
The object of the present invention is to provide a kind of tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat treatment methods.
For achieving the above object, the present invention uses following technical scheme：
Tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat-treatment technology method, the process are as follows：
（1）Equipment choosing joint sealing formula carbo-nitriding multipurpose furnace；
（2）Carburizing medium：Methanol flow is 3 ~ 4 m3/h；N2Flow is 4 ~ 5 m3/h；High pressure N2For 0.58 m3/h；Propane is 1.3~1.5m3/h；Ammonia flow is the atmosphere of 0.25 ~ 0.45 m3/h；
（3）Technological parameter：Carbo-nitriding temperature is at 810 ~ 840 DEG C；It is divided into and burns carbon, heating, blends diffusion four-stage by force, afterwards It is quenched again, high-pressure wash and temper；
（4）Disposing way：Conical bearing inner ring and outer ring are placed on charging tray downwards using big end, are only put on each charging tray One layer of lasso is put, and charging tray is moved by the way of vertical lifting.
Compared with prior art, beneficial effects of the present invention are：Present invention process method is realized in high-carbon-chromium bearing steel Tapered roller bearing ring surface carry out carbo-nitriding, and overcome during carbo-nitriding tapered roller bearing ring circular cone raceway and become The problem of shape, reduces its deflection.
Description of the drawings
Conical bearing inner ring disposing way in Fig. 1 processing；
In figure, 1. inner rings, 2. carbo-nitriding multipurpose furnace charging trays；
Conic bearing outer ring disposing way in Fig. 2 processing；
In figure, 1. outer rings, 2. carbo-nitriding multipurpose furnace charging trays.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat-treatment technology method, the process are as follows：
（1）Equipment choosing joint sealing formula carbo-nitriding multipurpose furnace；
（2）Carburizing medium：Methanol flow is 3 ~ 4 m3/h；N2Flow is 4 ~ 5 m3/h；High pressure N2For 0.58 m3/h；Propane is 1.3~1.5m3/h；Ammonia flow is 0.25 ~ 0.45 m3The atmosphere of/h；
（3）Technological parameter：Carbo-nitriding temperature at 810 ~ 840 DEG C, be divided into burn carbon, heating, blend diffusion four-stage by force, altogether into Row 4h45min carries out quenching and is handled with oil-control after permeation, hardening heat is 80 ~ 100 DEG C, carries out 1h altogether.It is clear using high pressure Washing machine is cleaned, and 60 ~ 80 DEG C, scavenging period 50min of cleaning temperature needs to be tempered afterwards, 180 DEG C of temperature, when Between 1h；
（4）Disposing way：Conical bearing inner ring and outer ring are placed on charging tray downwards using big end, are only put on each charging tray One layer of lasso is put, and charging tray is moved by the way of vertical lifting.
Increase cup before permeation and burn carbon and warm, bearing surface impurity can be eliminated, avoid the permeation stage because miscellaneous Phenomena such as lasso surface infiltration layer caused by prime element influences is uneven, decarburization, while preliminary preheating is carried out to bearing, make bearing Reach permeation temperature in advance, improve permeation rate and quality.The inside and outside circle of bearing is placed in by the way of tiling in charging tray, and One layer of workpiece is only put per layered material disk, ensures the gas concentration on workpiece unit area, side when putting using big end downwards Formula can reduce lasso small end face in heat treatment process, because be heated too fast and gravity under the influence of caused by heat treatment deformation, together When make bearing ring thermally equivalent, obtain uniform carbonitrided case, big end puts lasso and can put lasso downwards to be compared Stablize, while charging tray is moved by the way of vertical lifting, generation of colliding with can be avoided with maximal efficiency.

Claims (1)

1. tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat-treatment technology method, which is characterized in that the technique side Method is as follows：
（1）Equipment choosing joint sealing formula carbo-nitriding multipurpose furnace；
（2）Carburizing medium：Methanol flow is 3 ~ 4 m3/h；N2Flow is 4 ~ 5 m3/h；High pressure N2For 0.58 m3/h；Propane is 1.3~1.5m3/h；Ammonia flow is 0.25 ~ 0.45 m3The atmosphere of/h；
（3）Technological parameter：Carbo-nitriding temperature is divided at 810 ~ 840 DEG C and burns carbon, heating, blends diffusion four-stage by force, afterwards It is quenched again, high-pressure wash and temper；
（4）Disposing way：Conical bearing inner ring and outer ring are placed on charging tray downwards using big end, are only put on each charging tray One layer of lasso is put, and charging tray is moved by the way of vertical lifting.
CN201711444528.8A 2017-12-27 2017-12-27 Tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat treatment method Pending CN108048788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711444528.8A CN108048788A (en) 2017-12-27 2017-12-27 Tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat treatment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711444528.8A CN108048788A (en) 2017-12-27 2017-12-27 Tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat treatment method

Publications (1)

Publication Number Publication Date
CN108048788A true CN108048788A (en) 2018-05-18

Family

ID=62128547

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711444528.8A Pending CN108048788A (en) 2017-12-27 2017-12-27 Tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat treatment method

Country Status (1)

Country Link
CN (1) CN108048788A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112195436A (en) * 2020-09-19 2021-01-08 成都天马铁路轴承有限公司 Carbonitriding process for medium-large thin-wall bearing made of high-carbon chromium bearing steel
CN113481464A (en) * 2021-06-22 2021-10-08 江苏力星通用钢球股份有限公司 High-precision long-life rolling body heat treatment carburizing process

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101326302A (en) * 2005-12-08 2008-12-17 Ntn株式会社 Carbo-nitriding process, method for manufacturing machine part, and machine part
CN104328373A (en) * 2014-10-22 2015-02-04 人本集团有限公司 High-carbon chromium bearing steel carbonitrided effective hardened layer depth detection method
CN106637060A (en) * 2016-10-20 2017-05-10 洛阳Lyc轴承有限公司 Carbonitriding heat treatment technique under new atmosphere

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101326302A (en) * 2005-12-08 2008-12-17 Ntn株式会社 Carbo-nitriding process, method for manufacturing machine part, and machine part
CN104328373A (en) * 2014-10-22 2015-02-04 人本集团有限公司 High-carbon chromium bearing steel carbonitrided effective hardened layer depth detection method
CN106637060A (en) * 2016-10-20 2017-05-10 洛阳Lyc轴承有限公司 Carbonitriding heat treatment technique under new atmosphere

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112195436A (en) * 2020-09-19 2021-01-08 成都天马铁路轴承有限公司 Carbonitriding process for medium-large thin-wall bearing made of high-carbon chromium bearing steel
CN113481464A (en) * 2021-06-22 2021-10-08 江苏力星通用钢球股份有限公司 High-precision long-life rolling body heat treatment carburizing process

Similar Documents

Publication Publication Date Title
CN105316621B (en) Total assembling structure and heat treatment method are combined in the carburizing of planet row travelling gear
CN102808188B (en) Gas carburizing and quenching technology for annular gears of transmissions
CN104294031A (en) Air quenching process for high-temperature bearing steel ferrule
CN108048788A (en) Tapered roller bearing ring high-carbon-chromium bearing steel carbo-nitriding heat treatment method
CN110846612A (en) Vacuum carburizing heat treatment processing technology
JP2019137905A (en) Quenching die and method of manufacturing annular member
CN109735793B (en) Carburizing and quenching heat treatment method for transmission taper sleeve and tool thereof
CN102352431A (en) Large-scale high-chrome cast iron roller permissible differential temperature heat treatment
CN112899612B (en) Gear carburizing and quenching process
WO2017073325A1 (en) Method for manufacturing bearing ring, and multi-row tapered roller bearing and manufacturing method therefor
CN106498144B (en) The gradient hardness heat treatment method of complete-section tunnel boring machine hobboing cutter cutter ring
CN104525568A (en) Machining method of carburized bearing steel seamless steel tube
WO2017203915A1 (en) Heat treatment method for ring-shaped member, manufacturing method for ring-shaped member, bearing ring of roller bearing, and roller bearing
JP2009270173A (en) Heat treatment method for bearing ring for radial bearing
CN102409151A (en) Automobile drive axle ring gear heat treatment process
JP2013221200A (en) Method for producing bearing ring of rolling bearing
JP2011026633A (en) Method for heat-treating ring-shaped member, method for producing ring-shaped member, ring-shaped member, orbital ring of rolling bearing, and rolling bearing
JP2009001837A (en) Method for correcting deformation of annular material
US20030127161A1 (en) Process for hardening a circumferential surface on a steel article
CN104057250A (en) Processing technology for guaranteeing assembling interchangeability of inner and outer rings of revolving support
JP2014095154A (en) Heat treatment method for ring-shaped member, method for producing ring-shaped member, ring-shaped member, bearing ring of rolling bearing, and rolling bearing
JP5130150B2 (en) Induction hardening method and bearing parts
CN105624691A (en) Carburizing and quenching process for 20Cr2Ni4A steel gear
JP5050587B2 (en) Rolling bearing device for wheel support
CN203487198U (en) Gasket group for thermal treatment on gear hub

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20180518

WD01 Invention patent application deemed withdrawn after publication