CN108466010A - A kind of automobile precision bearing circle and its processing technology - Google Patents

A kind of automobile precision bearing circle and its processing technology Download PDF

Info

Publication number
CN108466010A
CN108466010A CN201810173353.XA CN201810173353A CN108466010A CN 108466010 A CN108466010 A CN 108466010A CN 201810173353 A CN201810173353 A CN 201810173353A CN 108466010 A CN108466010 A CN 108466010A
Authority
CN
China
Prior art keywords
processing technology
precision bearing
bearing circle
area
automobile precision
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
CN201810173353.XA
Other languages
Chinese (zh)
Inventor
廖春惠
葛泓
乐建朝
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.)
Jiangsu Bojet Precision Forging Co Ltd
Original Assignee
Jiangsu Bojet Precision Forging Co Ltd
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 Jiangsu Bojet Precision Forging Co Ltd filed Critical Jiangsu Bojet Precision Forging Co Ltd
Priority to CN201810173353.XA priority Critical patent/CN108466010A/en
Publication of CN108466010A publication Critical patent/CN108466010A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/003Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof

Abstract

The invention belongs to the matched precision bearing manufacturing technology fields of critical host, specifically, provide a kind of processing technology of automobile precision bearing circle, including following process:(a)Using Medium Frequency Induction Heating Furnace to blank heating;(b)It is forged using Balance mechanism according to mould circle;(c)After depanning spheroidizing is carried out in continuity nitrogen group protecting atmosphere stove;(d)Carry out ball blast;(e)Carry out cold 7 ~ 10s of rolling;(f)Cleaning treatment;(g)Appearance sorts after rolling.Beneficial effects of the present invention:The present invention's further improves the performances such as hardness and the wearability of bearing outer ring with cold rolling technology, Optimizing Technical, automation mechanized operation by combination forging technology to improve processing technology;By cleaning treatment, make bearing outer ring without small rubbish, increase cleannes, extend the service life of precision bearing outer ring, reaches the rank requirement of precision bearing workpiece.

Description

A kind of automobile precision bearing circle and its processing technology
Technical field
The invention belongs to the matched precision bearing manufacturing technology fields of critical host, and in particular, to a kind of automobile The processing technology of precision bearing circle.
Background technology
Bearing outer ring is typically secured on the shell of bearing block or machine, plays roller body.In bearing length During time operates use, bearing outer ring is vulnerable part, cannot be reused after damage, and larger waste is caused.Therefore, outside bearing The intensity and wearability of circle are crucial, and when processing bearing outer ring, selected material and processing technology determine bearing outer ring Intensity and wearability, for precision bearing, size, material, the processing technology of bearing outer ring determine its accurate rank.
Invention content
Goal of the invention:The purpose of the present invention is to provide a kind of processing technologys of automobile precision bearing circle.Pass through combination Forging technology further improves axis with cold rolling technology, Optimizing Technical, automation mechanized operation to improve processing technology The performances such as the hardness and wearability of bearing outer-ring;By cleaning treatment, makes bearing outer ring without small rubbish, increase cleannes, prolong The service life for having grown precision bearing outer ring has reached the rank requirement of precision bearing workpiece.
The technical solution adopted in the present invention:The present invention provides a kind of processing technology of automobile precision bearing circle, packets Include following process:(a)Using Medium Frequency Induction Heating Furnace to blank heating to 1150 ± 50 DEG C, improves plasticity, reduces resistance of deformation, Make the readily flowed forming of blank, and obtains good institutional framework and mechanical property;(b)According to the ruler of bearing outer ring to be processed Very little selection mould circle, is forged using Balance mechanism;(c)After depanning in roller-bottom type continuity nitrogen group protecting atmosphere stove into Row spheroidizing, annealing process temperature range are as follows:One area:760 ~ 780 DEG C, 2nd area:805 ~ 815 DEG C, 3rd area:795 ~ 805 DEG C, 4th area:785 ~ 805 DEG C, 5th area:755 ~ 775 DEG C, 6th area:715 ~ 735 DEG C, 7th area:705 ~ 725 DEG C, 8th area:675~695℃; (d)Ball blast is carried out using shot-blasting machine, removes the oxide scale layer and oxidation film on surface, improves surface roughness;(e)Using cold rolling Machine sets 8 ~ 16MPa of rolling pressure and carries out cold 7 ~ 10s of rolling, 8 ~ 12MPa of whole diameter pressure;(f)Cleaning treatment, processing includes greasy dirt Cleaning and antirust are impregnated;(g)Appearance sorts after rolling.
Further, the step(a)Be heated to be heat stepwise, be first heated to 550 ~ 600 DEG C, keep the temperature 1h, then 1150 ± 50 DEG C are heated to, the generation of fine crack is prevented;
Further, the step(b)Forging and molding after, the forging of preliminarily forming must be carried out on automatic sorting platform preliminary Automatic sorting chooses the forging for having open defect, includes System of Detecting Surface Defects For Material, forges the forging of surface defect and burr.
Further, the step(c)Spheroidizing process, using metallographic examination instrument check spherodized structure, decarburized layer And net carbide.Spherodized structure is at 2 ~ 4 grades;Practical decarburized depth≤0.2mm;Net carbide≤2.5 grade.
Further, the step(d)The Shot Blasting time be 18 ~ 25min, selected shot granularity 1.2 ~ 1.5mm。
Further, the step(e)Spheroidizing process, using metallographic examination instrument check outer diameter face practical decarburized depth The mm of≤0.15mm, Wall-Thickness Difference≤0.2, and reference plane does not have burr and folding.
Further, the step(f)Greasy dirt cleaning treatment, use automatic motor nylon bristle by bearing outer ring first Inner wall and the heavier rubbish of raceway face carry out rotation and scrub, and then use multiple-grooved channel-type ultrasonic wave, clear with bearing aqua Ultrasonic wave of the lotion as cleansing medium in frequency 30kHz, power 1kW cleans up small rubbish, carries out originally flow Dynamic rinsing;Repeated washing, rinsing 2 ~ 3 times.
Further, the step(f)Antirust immersion treatment, using antirust with impregnate bonderite impregnated at 95 ~ 99 DEG C It is taken out after 10 ~ 15min, is rinsed with water totally after exposing 18 ~ 20min in air, finally dries.
Further, the step(f)Antirust with immersion bonderite be zinc phosphide.
Further, the blank is high-carbon-chromium bearing steel, ingredient percent C:0.85%~1.15%, Si:0.10%~0.40%, Mn:0.20%~0.50%, Cr:1.30%~1.75%, S:0.004%~0.020%, V: 0.005%~0.025%, Ti:0.003%~0.015%, Al:0.010%~0.030%, O:0.0002%~ 0.0007%, N:0.0020%~0.0060%, surplus is Fe and inevitable impurity..
The beneficial effects of the invention are as follows:
(1)The present invention by combining forging technology and cold rolling technology, Optimizing Technical, automation mechanized operation, to improve Processing technology further improves the performances such as hardness and the wearability of bearing outer ring;
(2)By cleaning treatment, make bearing outer ring without small rubbish, increase cleannes, extends making for precision bearing outer ring With the service life, the rank requirement of precision bearing workpiece is reached.
(3)The precision bearing outer ring processing technology of the present invention is easy to operate, and gained precision bearing outer ring has intensity high, hard High, wear-resistant, the antifatigue advantage of degree, the bearing outer ring performance of processing are improved.
Specific implementation mode
Embodiment:
A kind of processing technology of automobile precision bearing circle, including following process:(a)Blank is added using Medium Frequency Induction Heating Furnace Heat improves plasticity, reduces resistance of deformation, make the readily flowed forming of blank, and obtain good institutional framework and power to 1150 DEG C Learn performance;(b)Mould circle is selected according to the size of bearing outer ring to be processed, is forged using Balance mechanism;(c)After depanning Spheroidizing is carried out in roller-bottom type continuity nitrogen group protecting atmosphere stove, annealing process temperature range is as follows:One area:760~ 780 DEG C, 2nd area:805 ~ 815 DEG C, 3rd area:795 ~ 805 DEG C, 4th area:785 ~ 805 DEG C, 5th area:755 ~ 775 DEG C, 6th area:715~ 735 DEG C, 7th area:705 ~ 725 DEG C, 8th area:675~695℃;(d)Ball blast is carried out using shot-blasting machine, removes the oxide scale layer on surface And oxidation film, improve surface roughness;(e)Cold 7 ~ 10s of rolling is carried out using 8 ~ 16MPa of cold-rolling enlarging machine setting rolling pressure, it is whole 8 ~ 12MPa of diameter pressure;(f)Cleaning treatment, processing include that greasy dirt cleaning and antirust are impregnated;(g)Appearance sorts after rolling.
Further, the step(a)Be heated to be heat stepwise, be first heated to 550 ~ 600 DEG C, keep the temperature 1h, then 1150 ± 50 DEG C are heated to, the generation of fine crack is prevented.
Further, the step(b)Forging and molding after, must on automatic sorting platform to the forging of preliminarily forming carry out Preliminary automatic sorting chooses the forging for having open defect, includes System of Detecting Surface Defects For Material, forges the forging of surface defect and burr Part.
Further, the step(c)Spheroidizing process, using metallographic examination instrument check spherodized structure, decarburized layer And net carbide.Spherodized structure is at 2 ~ 4 grades;Practical decarburized depth≤0.2mm;Net carbide≤2.5 grade.
Further, the step(d)The Shot Blasting time be 18 ~ 25min, selected shot granularity 1.2 ~ 1.5mm。
Further, the step(e)Spheroidizing process, using metallographic examination instrument check outer diameter face practical decarburized depth The mm of≤0.15mm, Wall-Thickness Difference≤0.2, and reference plane does not have burr and folding.
Further, the step(f)Greasy dirt cleaning treatment, use automatic motor nylon bristle by bearing outer ring first Inner wall and the heavier rubbish of raceway face carry out rotation and scrub, and then use multiple-grooved channel-type ultrasonic wave, clear with bearing aqua Ultrasonic wave of the lotion as cleansing medium in frequency 30kHz, power 1kW cleans up small rubbish, carries out originally flow Dynamic rinsing;Repeated washing, rinsing 2 ~ 3 times.
Further, the step(f)Antirust immersion treatment, using antirust with impregnate bonderite impregnated at 95 ~ 99 DEG C It is taken out after 10 ~ 15min, is rinsed with water totally after exposing 18 ~ 20min in air, finally dries.
Further, the step(f)Antirust with immersion bonderite be zinc phosphide.
Further, the blank is high-carbon-chromium bearing steel, ingredient percent C:0.85%~1.05%, Si:0.10%~0.35%, Mn:0.20%~0.45%, Cr:1.30%~1.75%, S:0.004%~0.020%, V: 0.015%~0.035%, Zr:0.008%~0.01%, Ti:0.003%~0.015%, Al:0.010%~0.030%, O:0.0004%~0.0009%, N:0.0015%~0.0055%, surplus is Fe and inevitable impurity.
The above is only a preferred embodiment of the present invention, it should be noted that for those skilled in the art For, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as the guarantor of the present invention Protect range.

Claims (10)

1. a kind of processing technology of automobile precision bearing circle, which is characterized in that including following process:(a)Using Medium frequency induction Heating furnace, to 1150 ± 50 DEG C, improves plasticity, reduces resistance of deformation, make the readily flowed forming of blank, and obtain to blank heating Good institutional framework and mechanical property;(b)Mould circle is selected according to the size of bearing outer ring to be processed, using Balance mechanism It is forged;(c)After depanning spheroidizing, annealing process humidity province are carried out in roller-bottom type continuity nitrogen group protecting atmosphere stove Between it is as follows:One area:760 ~ 780 DEG C, 2nd area:805 ~ 815 DEG C, 3rd area:795 ~ 805 DEG C, 4th area:785 ~ 805 DEG C, 5th area:755~ 775 DEG C, 6th area:715 ~ 735 DEG C, 7th area:705 ~ 725 DEG C, 8th area:675~695℃;(d)Ball blast, removal are carried out using shot-blasting machine The oxide scale layer and oxidation film on surface improve surface roughness;(e)It is carried out using 8 ~ 16MPa of cold-rolling enlarging machine setting rolling pressure Cold 7 ~ 10s of rolling, 8 ~ 12MPa of whole diameter pressure;(f)Cleaning treatment, processing include that greasy dirt cleaning and antirust are impregnated;(g)After rolling Appearance sorts.
2. a kind of processing technology of automobile precision bearing circle according to claim 1, it is characterised in that:The step (a)Be heated to be heat stepwise, be first heated to 550 ~ 600 DEG C, keep the temperature 1h, be then heated to 1150 ± 50 DEG C, prevent small The generation of crackle.
3. a kind of processing technology of automobile precision bearing circle according to claim 1, it is characterised in that:The step (b)Forging and molding after, preliminary automatic sorting must be carried out to the forging of preliminarily forming on automatic sorting platform, choosing has appearance to lack Sunken forging includes System of Detecting Surface Defects For Material, forges the forging of surface defect and burr.
4. a kind of processing technology of automobile precision bearing circle according to claim 1, it is characterised in that:The step (c)Spheroidizing process, spherodized structure, decarburized layer and net carbide are checked using metallographic examination instrument;Spherodized structure is 2 ~ 4 Grade;Practical decarburized depth≤0.2mm;Net carbide≤2.5 grade.
5. a kind of processing technology of automobile precision bearing circle according to claim 1, it is characterised in that:The step Suddenly(d)The Shot Blasting time be 18 ~ 25min, selected shot granularity is in 1.2 ~ 1.5mm.
6. a kind of processing technology of automobile precision bearing circle according to claim 3, it is characterised in that:The step (e)Spheroidizing process, the mm of outer diameter face practical decarburized depth≤0.15mm, Wall-Thickness Difference≤0.2 is checked using metallographic examination instrument, And reference plane does not have burr and folding.
7. a kind of processing technology of automobile precision bearing circle according to claim 1, it is characterised in that:The step (f)Greasy dirt cleaning treatment, use automatic motor nylon bristle by the heavier rubbish of bearing outer ring inner wall and raceway face first It carries out rotation to scrub, then uses multiple-grooved channel-type ultrasonic wave, use aqueous cleaning agent as cleansing medium in frequency using bearing 30kHz, power 1kW ultrasonic wave small rubbish is cleaned up, carry out originally water flowing rinse;Repeated washing, rinsing 2 ~ 3 It is secondary.
8. a kind of processing technology of automobile precision bearing circle according to claim 1, it is characterised in that:The step (f)Antirust immersion treatment, using antirust with impregnate bonderite impregnate 10 ~ 15min at 95 ~ 99 DEG C after take out, in air cruelly It is rinsed with water totally after 18 ~ 20min of dew, finally dries.
9. a kind of processing technology of automobile precision bearing circle according to claim 8, it is characterised in that:The step (f)Antirust with immersion bonderite be zinc phosphide.
10. a kind of processing technology of automobile precision bearing circle according to claim 1, it is characterised in that:The blank For high-carbon-chromium bearing steel, C:0.85%~1.05%, Si:0.10%~0.35%, Mn:0.20%~0.45%, Cr:1.30% ~1.75%, S:0.004%~0.020%, V:0.015%~0.035%, Zr:0.008%~0.01%, Ti:0.003% ~0.015%, Al:0.010%~0.030%, O:0.0004%~0.0009%, N:0.0015%~0.0055%, surplus For Fe and inevitable impurity.
CN201810173353.XA 2018-03-02 2018-03-02 A kind of automobile precision bearing circle and its processing technology Pending CN108466010A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810173353.XA CN108466010A (en) 2018-03-02 2018-03-02 A kind of automobile precision bearing circle and its processing technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810173353.XA CN108466010A (en) 2018-03-02 2018-03-02 A kind of automobile precision bearing circle and its processing technology

Publications (1)

Publication Number Publication Date
CN108466010A true CN108466010A (en) 2018-08-31

Family

ID=63264049

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810173353.XA Pending CN108466010A (en) 2018-03-02 2018-03-02 A kind of automobile precision bearing circle and its processing technology

Country Status (1)

Country Link
CN (1) CN108466010A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109382518A (en) * 2018-11-18 2019-02-26 柳州中通科技有限公司 A kind of processing technology of the wear-resistant anticorrosive high-precision bearing of rail traffic
CN109468541A (en) * 2018-11-18 2019-03-15 柳州中通科技有限公司 A kind of rail traffic high-precision bearing processing technology
CN110653316A (en) * 2019-09-24 2020-01-07 杭州万鼎实业有限公司 Multi-station integrated forging and finishing method for outer ring
CN111716081A (en) * 2020-06-30 2020-09-29 浙江新昌三雄轴承有限公司 Production process of bearing ring

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2060334A1 (en) * 2007-06-11 2009-05-20 Sumitomo Metal Industries, Ltd. METHOD OF USING Cr-PLATED MANDREL BAR FOR HOT ROLLING
CN103341577A (en) * 2013-07-19 2013-10-09 黄石哈特贝尔精密锻造有限公司 Cold ring rolling forming process for asymmetric shape of hub bearing outer ring and closed cold rolling forming die
CN104827245A (en) * 2015-02-03 2015-08-12 江苏金源锻造股份有限公司 Forging process of bearing ring
CN105543453A (en) * 2016-01-29 2016-05-04 上海人本集团有限公司 Rapid spheroidizing annealing process for bearing ring
CN106001379A (en) * 2016-05-23 2016-10-12 辽宁银捷装备科技股份有限公司 Forging process for bearing rings made of M50 steel
CN106834653A (en) * 2017-02-23 2017-06-13 武汉理工大学 A kind of bearing ring forging tissue fast spheroidizing annealing method based on controll cooling after forging

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2060334A1 (en) * 2007-06-11 2009-05-20 Sumitomo Metal Industries, Ltd. METHOD OF USING Cr-PLATED MANDREL BAR FOR HOT ROLLING
CN103341577A (en) * 2013-07-19 2013-10-09 黄石哈特贝尔精密锻造有限公司 Cold ring rolling forming process for asymmetric shape of hub bearing outer ring and closed cold rolling forming die
CN104827245A (en) * 2015-02-03 2015-08-12 江苏金源锻造股份有限公司 Forging process of bearing ring
CN105543453A (en) * 2016-01-29 2016-05-04 上海人本集团有限公司 Rapid spheroidizing annealing process for bearing ring
CN106001379A (en) * 2016-05-23 2016-10-12 辽宁银捷装备科技股份有限公司 Forging process for bearing rings made of M50 steel
CN106834653A (en) * 2017-02-23 2017-06-13 武汉理工大学 A kind of bearing ring forging tissue fast spheroidizing annealing method based on controll cooling after forging

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
中国机械工程学会锻压学会: "《锻压手册》", 30 September 1993 *
王明舟: "轴承套圈成型工艺对比分析", 《轴承》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109382518A (en) * 2018-11-18 2019-02-26 柳州中通科技有限公司 A kind of processing technology of the wear-resistant anticorrosive high-precision bearing of rail traffic
CN109468541A (en) * 2018-11-18 2019-03-15 柳州中通科技有限公司 A kind of rail traffic high-precision bearing processing technology
CN110653316A (en) * 2019-09-24 2020-01-07 杭州万鼎实业有限公司 Multi-station integrated forging and finishing method for outer ring
CN111716081A (en) * 2020-06-30 2020-09-29 浙江新昌三雄轴承有限公司 Production process of bearing ring

Similar Documents

Publication Publication Date Title
CN1040660C (en) Manufacture of bainite steel rail with high strength and good performence of anti-rolling-endurance-failure
CN100344784C (en) Steel pipe for bearing elements, and methods for producing and cutting the same
JP5121168B2 (en) Rolling member manufacturing method and rolling bearing manufacturing method
JP4705456B2 (en) Seamless steel pipe and manufacturing method thereof
CN100391688C (en) Art for mfg. Austempered Ductile iron gear for diesel engine
CN100464940C (en) Method for producing accurate steel balls
CN103447778B (en) A kind of processing technology of heavy truck engine crankshaft
CN102310310B (en) Composite machining process for inner and outer rings of narrow-series thin-walled high-precision conical thin-walled bearings
CN104195567A (en) Cemented quenching heat treatment method of automobile engine gears
GB2338717A (en) Continuous annealing furnace, rolling bearing, annealing metho, and method of manufacturing inner and outer races of deeply groove ball bearing
JP2008240046A (en) High-strength steel sheet having excellent scale adhesion upon hot pressing, and method for producing the same
JPH0719252A (en) Rolling bearing for high temperature high speed rotation
CN1648277A (en) High strength steel sheet and method for manufacturing same
CN1950532A (en) Seamless steel pipe and method for production thereof
CN1436875A (en) Low-carbon free-cutting steel
EP2484493A1 (en) Shot peening treatment method for steel product
JP2007127227A (en) Hollow spring
CN102357778B (en) Manufacturing method of pulling straightening roller
CN1646714A (en) Steel wire for hard drawn spring excellent in fatigue strength and resistance to settling, and hard drawn spring
JP2005154784A (en) Bearing steel excellent in corrosion resistance
CN104511726B (en) Five cylinder pressure break pump crankcase manufacture method of Whole fiber Integral die-forged
CN104087862A (en) Alloy composition, semi-autogenous mill lining plate and manufacturing method of lining plate
CN103934648B (en) The preparation method of the end cap in the antivibration bar assembly of nuclear power generating sets steam generator
CN103276297B (en) A kind of self-joining type high strength cord is cored the manufacture method of drilling rod weldless steel tube
JP2996245B2 (en) Martensitic stainless steel with oxide scale layer and method for producing the same

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