CN110331272A - A kind of deformation and fades change coordinated regulation method of the high tough tissue of bearing assembly - Google Patents

A kind of deformation and fades change coordinated regulation method of the high tough tissue of bearing assembly Download PDF

Info

Publication number
CN110331272A
CN110331272A CN201910702688.0A CN201910702688A CN110331272A CN 110331272 A CN110331272 A CN 110331272A CN 201910702688 A CN201910702688 A CN 201910702688A CN 110331272 A CN110331272 A CN 110331272A
Authority
CN
China
Prior art keywords
deformation
bearing
cold
bearing assembly
regulation
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.)
Granted
Application number
CN201910702688.0A
Other languages
Chinese (zh)
Other versions
CN110331272B (en
Inventor
华林
路晓辉
钱东升
王丰
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.)
Wuhan University of Technology WUT
Original Assignee
Wuhan University of Technology WUT
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 Wuhan University of Technology WUT filed Critical Wuhan University of Technology WUT
Priority to CN201910702688.0A priority Critical patent/CN110331272B/en
Publication of CN110331272A publication Critical patent/CN110331272A/en
Application granted granted Critical
Publication of CN110331272B publication Critical patent/CN110331272B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/20—Isothermal quenching, e.g. bainitic hardening
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Rolling Contact Bearings (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention discloses a kind of deformation and fades change coordinated regulation methods of the high tough tissue of bearing assembly, the following steps are included: S1, cold near-net-shape deformation regulation: carrying out deformation regulation to bearing assembly using cold plasticity forming technology, in forming process, by rationally controlling deformation degree and speed of deformation, it obtains effective deformation fine grain and controls material deformation damage, and then improve tissue obdurability；S2, deformation matching Compound Heat Treatment phase transformation regulation: phase transformation regulation is carried out to bearing assembly using martensite-bainite composite heat treating process, utilize horse shellfish composite phase-change, high-strength and high ductility bainite structure is introduced, improves strength and toughness matching, and then improve tissue obdurability.The present invention realizes that deformation and fades change collaboration improves the tough effect of bearing assembly tissue by Optimized Matching deformation and phase transformation critical craft.

Description

A kind of deformation and fades change coordinated regulation method of the high tough tissue of bearing assembly
Technical field
The invention belongs to bearing mnanufacture technical fields, and in particular to a kind of deformation and fades change association of the high tough tissue of bearing assembly People having the same aspiration and interest prosecutor method.
Background technique
Bearing is the core component of mechanized equipment bearing load and passing movement, and precision and performance directly affect host Running accuracy and working life.Bearing assembly includes bearing ring and bearing roller, and lasso and rolling element are to determine bearing Can be with the core component in service life, the tissue obdurability of fatigue performance and lasso, rolling element is closely related during bearing is on active service.
It is poor using the lasso of conventional fabrication processes manufacture and the tough matching of the institutional framework of rolling element, it is difficult to resistance heavy duty, The bad working environments such as large impact, this becomes the critical issue for influencing bearing extreme operating condition service life and reliability.And lasso and rolling Kinetoplast must manufacture structural state and depend primarily on Plastic Forming and heat treatment, and Plastic Forming is utilized using deformation effect, heat treatment Phase transformation effect is come the tissue for the needs that regulate and control and obtain to be on active service.Therefore, axis is improved by effective deformation and phase transformation coordinated regulation Bearing assembly tissue obdurability is the key technology approach for solving the problems, such as extreme operating condition bearing mnanufacture Yu military service.
Summary of the invention
The purpose of the present invention is to provide a kind of deformation and fades change coordinated regulation method of the high tough tissue of bearing assembly, its bases In the forming of the cold plasticity of bearing ring and rolling element component and horse shellfish composite heat treating process, pass through Optimized Matching deformation and phase transformation Critical craft realizes that deformation and fades change collaboration improves the tough effect of tissue.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of deformation and fades change coordinated regulation method of the high tough tissue of bearing assembly, comprising the following steps:
S1, cold near-net-shape deformation regulation: deformation regulation is carried out to bearing assembly using cold plasticity forming technology, is being shaped In the process, by rationally controlling deformation degree and speed of deformation, obtaining effective deformation fine grain and controlling material deformation damage, into And improve tissue obdurability；
For bearing ring: passing through cold rolling annular strain amount in forming process using cold rolling ring process forming bearing ring Deformation degree is controlled, speed of deformation, the cold rolling annular strain amount of bearing ring are controlled by deformation velocityBearing The deformation velocity V of lasso1=λ1ε·V0, wherein δ is the room temperature elongation percentage of bearing ring material, R1And R2Respectively bearing ring Internal diameter and outer diameter, r0For the radius of curvature of bearing collar path, k1For cold rolling annular strain measure feature coefficient, k1Value range For 3~4, λ1For cold-rolling deformation velocity characteristic coefficient, λ1Value range be 1~3, V0For standard transformations speed, V0=1mm/s；
For bearing roller: being become in forming process by cold plasticity using cold oblique roll process forming bearing roller Shape amount controls deformation degree, controls speed of deformation, the cold plastic deformation amount of bearing roller by deformation velocity The deformation velocity V of bearing roller2=λ2ε2·V0, wherein δ2For the room temperature elongation percentage of rolling element material, r0For bearing ring rolling The radius of curvature in road, R are the outer diameter of bearing roller, k2For rolling element cold plastic deformation measure feature parameter, k2Value range be 2~3, λ2For cold plastic deformation velocity characteristic parameter, λ2Value range be 1~3, V0=1mm/s；
S2, deformation matching Compound Heat Treatment phase transformation regulation: using martensite-bainite composite heat treating process to bearing group Part carries out phase transformation regulation, using horse shellfish composite phase-change, introduces high-strength and high ductility bainite structure, improves strength and toughness matching, into And improve tissue obdurability.
According to the above technical scheme, in step S2, martensite-bainite composite heat treating process specifically includes the following steps:
Bearing assembly is first heated to temperature spot (1.1-0.2 ε) Acm under nitrogen protection atmosphere and keeps the temperature a period of time, Then it is put into rapidly in the salt bath that temperature is Ms- (10~60 DEG C) and carries out marquench, then bearing assembly is put into temperature and is Bainitic hardening is carried out in the salt bath of Ms+ (20~80 DEG C), last water cooling to room temperature, wherein Acm is that material heats complete Ovshinsky Body temperature, Ms are the initial temperature of martensite transfor mation in material cooling procedure, when bearing assembly is bearing ring, ε=ε1, When bearing assembly is bearing roller, ε=ε2。
The beneficial effect comprise that: the present invention is based on bearing assembly Plastic Forming, heat treatment and structural state it Between close association, Optimized Matching cold plasticity forming and horse shellfish Compound Heat Treatment, first using cold plasticity forming technology to lasso Deformation regulation is carried out with rolling element, crystal grain is refined by room temperature near-net-shape, and obtain profile-followed along bearing assembly geometric profile Fine and close streamline changes and improves tissue obdurability by crystal grain refinement and streamline, moreover, in forming process, if deflection is excessive, It is possible that will lead to material generates damage in deformation process, the service life of bearing assembly is greatly reduced；If deflection is smaller, cold moulding Influence of the property deformation to bearing assembly is smaller, then cannot play the refined crystalline strengthening and streamline improvement of deformation completely, therefore, examine Consider its different elongation percentage of material and deformation characteristic is different, needs the material for different mechanical property characteristics, choose and close (i.e. deflection is no longer fixed value to the deflection and deformation velocity of reason, can be produced if fixed value when material elongation percentage is lower Raw crackle causes high-strength tenacity not reach requirement, and when material elongation percentage is higher, grain refining effect is undesirable), by reasonable It designs cold rolling annular strain amount or cold plastic deformation amount controls deformation degree, control speed of deformation by rationally designing deformation velocity, In a certain range by the control of cold plastic deformation amount, the refined crystalline strengthening and streamline that can play deformation to greatest extent improve effect Fruit, while material deformation damage is controlled, further increase tissue obdurability；Martensite-bainite Compound Heat Treatment work is used again Skill carries out phase transformation regulation to lasso and rolling element, using horse shellfish composite phase-change, introduces high-strength and high ductility bainite structure, improves intensity It is matched with toughness, further increases tissue obdurability.
The present invention is guaranteeing that bearing assembly is strong by the deformation and fades change coordinated regulation of cold plasticity forming and graphite ball While degree, hardness, its toughness can be increased substantially, high tough tissue is obtained, improves bearing assembly mechanical performance.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in the embodiment of the present invention Technical solution is clearly and completely described, it is clear that and described embodiment is a part of the embodiments of the present invention, rather than Whole embodiments.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit this hair It is bright.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work Every other embodiment, shall fall within the protection scope of the present invention.
A kind of deformation and fades change coordinated regulation method of the high tough tissue of bearing assembly, comprising the following steps:
S1, cold near-net-shape deformation regulation: deformation regulation is carried out to bearing assembly using cold plasticity forming technology, is being shaped In the process, by rationally controlling deformation degree and speed of deformation, obtaining effective deformation fine grain and controlling material deformation damage, into And improve tissue obdurability；
For bearing ring: passing through cold rolling annular strain amount in forming process using cold rolling ring process forming bearing ring Deformation degree is controlled, speed of deformation, the cold rolling annular strain amount of bearing ring are controlled by deformation velocityBearing The deformation velocity V of lasso1=λ1ε·V0, wherein δ is the room temperature elongation percentage of bearing ring material, R1And R2Respectively bearing ring Internal diameter and outer diameter, r0For the radius of curvature of bearing collar path, k1For cold rolling annular strain measure feature coefficient, k1Value range For 3~4, λ1For cold-rolling deformation velocity characteristic coefficient, λ1Value range be 1~3, V0=1mm/s；
For bearing roller: being become in forming process by cold plasticity using cold oblique roll process forming bearing roller Shape amount controls deformation degree, controls speed of deformation, the cold plastic deformation amount of bearing roller by deformation velocity The deformation velocity V of bearing roller2=λ2ε·V0, wherein δ is the room temperature elongation percentage of rolling element material, r0For bearing ring rolling The radius of curvature in road, R are the outer diameter of bearing roller, k2For rolling element cold plastic deformation measure feature parameter, k2Value range be 2~3, V2=λ2ε·V0For cold plastic deformation velocity characteristic parameter, V2=λ2ε·V0Value range be 1~3, V0=1mm/s；
S2, deformation matching Compound Heat Treatment phase transformation regulation: using martensite-bainite composite heat treating process to bearing group Part carries out phase transformation regulation, using horse shellfish composite phase-change, introduces high-strength and high ductility bainite structure, improves strength and toughness matching, into And improve tissue obdurability.
In a preferred embodiment of the invention, in step S2, martensite-bainite composite heat treating process specifically include with Bearing assembly: being first heated to temperature spot (1.1-0.2 ε) Acm by lower step under nitrogen protection atmosphere and keeps the temperature 10~15min, Then it is put into rapidly in the salt bath that temperature is Ms- (10~60 DEG C) and carries out marquench, then bearing assembly is put into temperature and is Bainitic hardening, last water cooling to room temperature are carried out in the salt bath of Ms+ (20~80 DEG C)；Wherein, Acm is that material heats complete Ovshinsky Body temperature, Ms are the initial temperature of martensite transfor mation in material cooling procedure, when bearing assembly is bearing ring, ε=ε1, When bearing assembly is bearing roller, ε=ε2。
The present invention is reasonable difficult to understand by setting first in view of cold deformed microstructure is to the hereditation effect of heat treatment process Family name's body temperature avoids crystal grain in austenitization from growing up as far as possible, achievees the effect that refine crystal grain；It is reasonable by setting again Marquench temperature controls prequenching Martensite Volume Fraction, so that prequenching martensite is divided crystal grain, reaches thinning microstructure Effect；Reasonable Bainitic hardening temperature is finally set, the formation speed of bainite is controlled, to reach regulation bainite volume The purpose of score and form.The present invention is by rationally controlling phase transformation critical craft, and match control martensite, bainite phase Change condition is sufficiently reserved cold working hardening effect, while Reasonable Regulation And Control horse shellfish heterogeneous structure structure, plays cold deformation and Ma Beifu The synergistic effect of phase transformation is closed to refine original austenite grain, control martensite/bainite volume fraction, improve martensite/bayesian Volume morphing and size, to improve the intensity and toughness of tissue.
Being exemplified below two embodiments, invention is further explained.
Embodiment 1
By taking certain model bearing outer ring of GCr15 bearing steel material manufacture as an example, parameter is as follows: R2=68mm, R1= 57mm、r0=3.7mm, δ1=28.3%, Acm=910 DEG C, Ms=226 DEG C.
Deformation and fades change coordinated regulation is carried out using height tough tissue of the present invention to the bearing outer ring, comprising the following steps:
S1, cold near-net-shape deformation regulation: using cold rolling loop forming technique, rationally control deformation degree and speed of deformation, Effective deformation fine grain effect is obtained, while controlling material deformation damage；
According to formulaCalculating cold rolling cyclization reason deflection is 28.6%~38.1%, is selected in this example Taking cold rolling reduction is 35%；According to formula V1=λ1ε·V0, calculating cold rolling cyclization reason deformation velocity is 0.35~1.05mm/s, Choosing deformation velocity in this example is that 0.5mm/s carries out cold rolling loop forming；
S2, deformation matching Compound Heat Treatment phase transformation regulation: according to the cold deformation degree of material and phase change conditions setting complex phase heat Processing parameter carries out graphite ball to cold rolling annulate shaft bearing ring；
Austenitizing heating temperature is (1.1-0.2 ε) Acm, and reasonable austenitizing heating temperature is calculated in ε=35% Degree is 937 DEG C；Martensite prequenching temperature is Ms- (10~60 DEG C), and it is 166~216 that reasonable prequenching temperature, which is calculated, ℃；Austempering temperature be Ms+ (20~80 DEG C), be calculated reasonable austempering temperature be 246~ 306℃；
In this example, bearing outer ring is first heated to 937 DEG C of heat preservation 10min under nitrogen protection atmosphere and carries out austenite Change, is then placed in 200 DEG C of salt baths and 5min is kept to carry out marquench, then bearing outer ring is put into 260 DEG C of salt baths and is kept 30min carries out Bainitic hardening, last water cooling to room temperature.
Through experimental analysis, the Tensile strength of the bearing outer ring obtained of embodiment 1 is promoted compared to traditional handicraft 8%, impact flexibility promotes 1.5 times, illustrates that the present invention can effectively improve landing component tissue obdurability.
Embodiment 2
By taking certain model bearing roller of GCr15SiMn bearing steel material manufacture as an example, parameter is as follows: R=7mm, r0= 3.7mm, 62=30.5%, Acm=925 DEG C, Ms=232 DEG C.
Deformation and fades change coordinated regulation is carried out using height tough tissue of the present invention to the bearing roller, comprising the following steps:
S1, cold near-net-shape deformation regulation: using cold-forging forming technique, rationally controls deformation degree and effective deformation is thin Brilliant effect, while controlling material deformation damage；
According to formulaIt is 32.2%~48.4% that the reasonable deflection of cold forging, which is calculated, is chosen in this example Cold forging deflection is 40%；According to formula V2=λ2ε·V0, it is 0.4~1.2mm/s that cold forging deformation velocity, which is calculated, in this example Middle selection cold forging deformation velocity is that 1mm/s carries out cold-forging forming to blank.
S2, deformation matching Compound Heat Treatment phase transformation regulation: according to the cold deformation degree of material and phase change conditions setting complex phase heat Processing parameter carries out graphite ball to cold forging bearing roller；
Austenitizing heating temperature is (1.1-0.2 ε) Acm, e=40%, and reasonable austenitizing heating temperature is calculated Degree is 944 DEG C；Martensite prequenching temperature be Ms- (10~60 DEG C), be calculated reasonable prequenching temperature range be 172~ 222℃；Austempering temperature is Ms+ (20~80 DEG C), and it is 252 that reasonable austempering temperature, which is calculated, Within the scope of~312 DEG C；
In this example, bearing roller is first heated to 944 DEG C of heat preservation 8min under nitrogen protection atmosphere and carries out austenitizing, Then being put into rapidly in 210 DEG C of salt baths keeps 15min to carry out marquench, then bearing roller is put into 260 DEG C of salt baths and is protected It holds 60min and carries out Bainitic hardening, last water cooling to room temperature.
Through experimental analysis, the bearing roller Tensile strength obtained of embodiment 2 promotes 4% compared to traditional handicraft, Impact flexibility promotes 1.1 times, illustrates that the present invention can effectively improve roller material tissue obdurability.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description, And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.

Claims (2)

1. a kind of deformation and fades change coordinated regulation method of the high tough tissue of bearing assembly, which comprises the following steps:
S1, cold near-net-shape deformation regulation: deformation regulation is carried out to bearing assembly using cold plasticity forming technology, in forming process In, by rationally controlling deformation degree and speed of deformation, obtaining effective deformation fine grain and controlling material deformation damage, Jin Erti Height tissue obdurability；
For bearing ring: using cold rolling ring process forming bearing ring, in forming process, controlled by cold rolling annular strain amount Deformation degree controls speed of deformation, the cold rolling annular strain amount of bearing ring by deformation velocityBearing ring Deformation velocity V1=λ1ε1·V0, wherein δ1For the room temperature elongation percentage of bearing ring material, R1And R2Respectively bearing ring Internal diameter and outer diameter, r0For the radius of curvature of bearing collar path, k1For cold rolling annular strain measure feature coefficient, k1Value range be 3 ~4, λ1For cold-rolling deformation velocity characteristic coefficient, λ1Value range be 1~3, V0For standard transformations speed, V0=1mm/s；
For bearing roller: passing through cold plastic deformation amount in forming process using cold oblique roll process forming bearing roller Deformation degree is controlled, speed of deformation, the cold plastic deformation amount of bearing roller are controlled by deformation velocityBearing The deformation velocity V of rolling element2=λ2ε2·V0, wherein δ2For the room temperature elongation percentage of rolling element material, r0For bearing collar path Radius of curvature, R are the outer diameter of bearing roller, k2For rolling element cold plastic deformation measure feature parameter, k2Value range be 2~ 3, λ2For cold plastic deformation velocity characteristic parameter, λ2Value range be 1~3, V0=1mm/s；
S2, deformation matching Compound Heat Treatment phase transformation regulation: using martensite-bainite composite heat treating process to bearing assembly into Row phase transformation regulation introduces high-strength and high ductility bainite structure using horse shellfish composite phase-change, improves strength and toughness matching, Jin Erti Height tissue obdurability.
2. the deformation and fades change coordinated regulation method of the high tough tissue of bearing assembly according to claim 1, which is characterized in that In step S2, martensite-bainite composite heat treating process specifically includes the following steps:
Bearing assembly is first heated to temperature spot (1.1-0.2 ε) Acm under nitrogen protection atmosphere and keeps the temperature a period of time, then It is put into rapidly in the salt bath that temperature is Ms- (10~60 DEG C) and carries out marquench, then it is Ms+ that bearing assembly, which is put into temperature, Bainitic hardening is carried out in the salt bath of (20~80 DEG C), last water cooling to room temperature, wherein Acm is that material heats complete austenitizing Temperature, Ms are the initial temperature of martensite transfor mation in material cooling procedure, when bearing assembly is bearing ring, ε=ε1, work as axis When bearing assembly is bearing roller, ε=ε2。
CN201910702688.0A 2019-07-31 2019-07-31 Deformation phase change cooperative regulation and control method for high-toughness tissue of bearing assembly Active CN110331272B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910702688.0A CN110331272B (en) 2019-07-31 2019-07-31 Deformation phase change cooperative regulation and control method for high-toughness tissue of bearing assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910702688.0A CN110331272B (en) 2019-07-31 2019-07-31 Deformation phase change cooperative regulation and control method for high-toughness tissue of bearing assembly

Publications (2)

Publication Number Publication Date
CN110331272A true CN110331272A (en) 2019-10-15
CN110331272B CN110331272B (en) 2020-05-05

Family

ID=68148325

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910702688.0A Active CN110331272B (en) 2019-07-31 2019-07-31 Deformation phase change cooperative regulation and control method for high-toughness tissue of bearing assembly

Country Status (1)

Country Link
CN (1) CN110331272B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000063450A1 (en) * 1999-04-15 2000-10-26 Skf Engineering & Research Centre B.V. Rolling bearing steel having a surface with a lower bainitic structure and a method for the production thereof
WO2015151827A1 (en) * 2014-03-31 2015-10-08 株式会社神戸製鋼所 High-strength cold-rolled steel sheet, high-strength hot-dip galvanized steel sheet, and high-strength hot-dip galvannealed steel sheet having excellent ductility, stretch-flangeability, and weldability
CN108060291A (en) * 2017-12-21 2018-05-22 武汉理工大学 It improves cold looping mill rolling bearing ring obdurability and improves the manufacturing method of quenching distortion
CN108411096A (en) * 2018-02-06 2018-08-17 武汉理工大学 Improve the forming manufacturing method of M50 bearing matrix obdurability and dimensional stability

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000063450A1 (en) * 1999-04-15 2000-10-26 Skf Engineering & Research Centre B.V. Rolling bearing steel having a surface with a lower bainitic structure and a method for the production thereof
WO2015151827A1 (en) * 2014-03-31 2015-10-08 株式会社神戸製鋼所 High-strength cold-rolled steel sheet, high-strength hot-dip galvanized steel sheet, and high-strength hot-dip galvannealed steel sheet having excellent ductility, stretch-flangeability, and weldability
CN108060291A (en) * 2017-12-21 2018-05-22 武汉理工大学 It improves cold looping mill rolling bearing ring obdurability and improves the manufacturing method of quenching distortion
CN108411096A (en) * 2018-02-06 2018-08-17 武汉理工大学 Improve the forming manufacturing method of M50 bearing matrix obdurability and dimensional stability

Also Published As

Publication number Publication date
CN110331272B (en) 2020-05-05

Similar Documents

Publication Publication Date Title
CN105239017B (en) Carburization bearing steel and preparing method thereof
CN102534134A (en) Bainite isothermal quenching thermal treatment process method for medium-carbon bearing steel
KR20070110397A (en) Hot forged products excellent in fatigue strength, process for production thereof, and machine structural parts
CN107177804A (en) A kind of high tough quenched round steel of Cutting free and its manufacture method
CN107254635B (en) It is a kind of to exempt from annealed alloy steel wire rod and its production method with excellent drawing property
CN107858590B (en) A kind of 42CrMo4 wind driven generator principal shaft control method
CN105088081B (en) The manufacturing process of stabiliser bar
CN109763061B (en) Non-quenched and tempered steel and preparation method thereof
CN106893832A (en) A kind of BQ ＆ P Technologies for Heating Processing of carbides-free shellfish/horse Multiphase Steel
CN104120341A (en) Cr5 steel forging work roll for rolling extremely thin materials and preparation method thereof
CN105695679B (en) A kind of isothermal quenching technique of the rock-drill steel XGQ25 with the distribution of high tenacity heterogeneous structure
CN107470852B (en) A kind of Micro Alloying semiaxis and its manufacturing method
CN110205446A (en) A kind of G520 martensitic precipitation heat treatment method
CN109055707A (en) The heat treatment process of high-carbon-chromium bearing steel part
CN113862561A (en) Long-life high-carbon bearing steel pipe and preparation method and application thereof
CN105714190A (en) Steel for impact-resistant load bearing and heat treatment method of steel
CN110628998B (en) Precise bearing assembly structure stabilization deformation phase change cooperative regulation and control method
JPS589813B2 (en) Manufacturing method for non-thermal forged steel products
CN107855366A (en) A kind of steel pipe perforating heading and preparation method thereof
CN106868258A (en) A kind of high-carbon chromium steel carbide superfining handling process
CN104120342A (en) Roll and preparation method thereof
CN110331272A (en) A kind of deformation and fades change coordinated regulation method of the high tough tissue of bearing assembly
CN110029272B (en) Structure regulating method of high-toughness bearing and steel for nano bainite bearing
CN108424999B (en) A kind of heat treatment process of shallow-tank separator driving chain components
CN110484694B (en) Deformation phase change cooperative regulation and control method for bearing matrix fine grain structure

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
GR01 Patent grant
GR01 Patent grant