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 PDFInfo
- 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
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- processing technology
- precision bearing
- bearing circle
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- automobile precision
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
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
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.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN108466010A true CN108466010A (en) | 2018-08-31 |
Family
ID=63264049
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| 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 |
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Cited By (6)
| 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 |
| CN112719784A (en) * | 2020-12-02 | 2021-04-30 | 临安市恒盛精密元件有限公司 | Manufacturing method of bearing sleeve of vibration motor of mobile phone |
| CN113926979A (en) * | 2021-09-30 | 2022-01-14 | 无锡锡西模锻有限公司 | High-precision high-mechanical-property forging production process |
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Cited By (7)
| 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 |
| CN110653316B (en) * | 2019-09-24 | 2021-05-18 | 浙江万鼎精密科技股份有限公司 | 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 |
| CN112719784A (en) * | 2020-12-02 | 2021-04-30 | 临安市恒盛精密元件有限公司 | Manufacturing method of bearing sleeve of vibration motor of mobile phone |
| CN113926979A (en) * | 2021-09-30 | 2022-01-14 | 无锡锡西模锻有限公司 | High-precision high-mechanical-property forging production process |
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Application publication date: 20180831 |
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