CN108251630A - Frivolous bearing ring quenching heat treatment technique - Google Patents
Frivolous bearing ring quenching heat treatment technique Download PDFInfo
- Publication number
- CN108251630A CN108251630A CN201810161998.1A CN201810161998A CN108251630A CN 108251630 A CN108251630 A CN 108251630A CN 201810161998 A CN201810161998 A CN 201810161998A CN 108251630 A CN108251630 A CN 108251630A
- Authority
- CN
- China
- Prior art keywords
- thin
- quenching
- wall bearing
- ferrule
- ring
- 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
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
- 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
- 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
- C21D1/62—Quenching devices
Abstract
The present invention relates to a kind of frivolous bearing ring quenching heat treatment techniques, carry out according to the following steps：First thin-wall bearing ferrule is preheated, preheating temperature is 780 DEG C ~ 820 DEG C, and preheating time is 10 ~ 30min；It is later 0.4 ~ 0.8 time heating in carbon potential by thin-wall bearing ferrule, heating temperature is 830 DEG C ~ 860 DEG C, and heating time is 30 ~ 60min；By thin-wall bearing ferrule fix and it is circumferential on be limited in quencher and load onto, together with quenching treatment in thin-wall bearing ferrule and quenching tooling input quenching liquid, quenching liquid temperature is 150 DEG C ~ 170 DEG C, and the cool time is 15 ~ 25min；After being cooled to room temperature, quenching tooling is separated with thin-wall bearing ferrule；Be placed in tempering furnace 180 DEG C ~ 300 DEG C be tempered 100 ~ 180min.Bearing ring quenching mould fixing bearing lasso, convenient for bearing ring quenching deformation quantity control.
Description
Technical field
The present invention relates to bearing heat treatment process, specifically frivolous bearing ring quenching heat treatment technique.
Background technology
At present in the heat treatment process of thin-wall bearing ferrule conventional quenching add-back fire, there is heat treatment swell increment and deflection
The problem of big, therefore increase allowance is virtually needed in process of manufacture, increase material cost.
Invention content
Objects of the present invention：To overcome defect of the existing technology, present invention offer is a kind of to be consolidated using quenching mould
Dead axle bearing ring, convenient for the frivolous bearing ring quenching heat treatment technique of bearing ring quenching deformation quantity control.
To achieve the above object, the present invention provides following technical solutions：
A kind of frivolous bearing ring quenching heat treatment technique, carries out according to the following steps：
First thin-wall bearing ferrule is preheated, preheating temperature is 780 DEG C ~ 820 DEG C, and preheating time is 10 ~ 30min；Later by thin-walled
Bearing ring is 0.4 ~ 0.8 time heating in carbon potential, and heating temperature is 830 DEG C ~ 860 DEG C, and heating time is 30 ~ 60min；By thin-walled
Bearing ring is fixed and is limited in quencher on circumferential and loads onto, together with quenching in thin-wall bearing ferrule and quenching tooling input quenching liquid
Fire processing, quenching liquid temperature are 150 DEG C ~ 170 DEG C, and the cool time is 15 ~ 25min；After being cooled to room temperature, tooling and thin-walled are quenched
Bearing ring separates；Be placed in tempering furnace 180 DEG C ~ 300 DEG C be tempered 100 ~ 180min.
By using above-mentioned technical proposal, thin-wall bearing is limited with quencher in circumferential direction, so as to fulfill right
The deflection of thin-wall bearing effectively controls, so as to reduce quenching crash rate.
Preferably, the quenching tooling includes cylindrical main body, and radially half-and-half segmentation forms two valves half to cylindrical main body
Annulus, two valve semicircular rings are combined with the retaining mechanism that connection is locked after the two is radially open split, semicircular ring described in two valves
Inner peripheral surface be equipped with lasso card slot, lasso card slot both ends perforation semicircular ring circumferential end, two valve semicircular rings are through lasso card
Slot is buckled in thin-wall bearing ferrule outer circumferential sides, two valve semicircular rings is locked by retaining mechanism, so as to form cylindrical main body hoop
Tight thin-wall bearing ferrule, lasso card slot axial direction center are recessed with the annular groove extended along lasso card slot, thin wall shaft bearing sleeve
To at annular groove, the radial through-hole for radially penetrating through semicircular ring is vacantly equipped in annular groove bottom for the outer circumferential portion of circle,
And two semicircular ring described in valve circumferential end between be arranged at intervals.
By using above-mentioned technical proposal, quenching tooling quenches two semicircles of tooling using radially half-and-half segmentation design
Ring holds thin-wall bearing ferrule tightly, by controlling the degree held tightly to thin-wall bearing ferrule so as to control the shape of thin-wall bearing ferrule
Variable, the realization of lasso card slot reliably position bearing；Thin-wall bearing ferrule is fixed by the way of radial direction banding, Ke Yiyou
The amount of swelling, ovality, warpage in effect control thin-wall bearing ferrule quenching process；In quenching process, quenching liquid is through radial through-hole
And two semicircular ring described in valve circumferential end between interval enter annular groove, annular groove is convenient for quenching liquid and thin-wall bearing
Lasso comes into full contact with, so as to ensure that thin-wall bearing ferrule quenching is complete.
Preferably, between the circumferential end of semicircular ring described in two valves it is in the adjustable interval setting of spacing, and the locking
Mechanism is in semicircular ring described in two valve of adjustable locking of spacing between semicircular ring circumferential end described in controllable two valves.
Under the structure design, by controlling two semicircular ring circumferential end mosaic spacing so as to preferably adapt to bearing holder (housing, cover)
The outer diameter of circle, the adjustment general to similar sizes bearing ring, the drawbacks of similar sizes is avoided to be unable to intercommunication.Moreover, spacing can
In the case of adjusting, bearing ring can preferably be controlled to quench deformation quantity.
Preferably, the retaining mechanism include at semicircular ring circumferential end radially outward from engaging lug, in two valves half
Engaging lug is equipped at two circumferential ends of annulus, engaging lug is equipped with bolt connecting hole, and the same side of two valve semicircular rings connects
Lug is combined with the bolt/nut assemblies of the engaging lug locking connection of two valve semicircular rings.
Under the structure design, locking mechanism structure is simply and reliable, and disassembling operations are convenient.
The invention will be further described below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is the frivolous bearing ring quenching heat treatment technology process figure of the specific embodiment of the invention；
Fig. 2 is that the specific embodiment of the invention quenches the usage state diagram after tooling assembling thin-wall bearing ferrule；
Fig. 3 quenches tooling stereogram for the specific embodiment of the invention；
Fig. 4 quenches tooling axial view for the specific embodiment of the invention；
Fig. 5 is the sectional view of the line A-A cutting along Fig. 4.
Specific embodiment
Referring to attached drawing 1 ~ 5, a kind of frivolous bearing ring quenching heat treatment technique disclosed by the invention.
Embodiment 1；
First thin-wall bearing ferrule is preheated, preheating temperature is 780 DEG C, preheating time 10min；Thin-wall bearing ferrule is existed later
Carbon potential is 0.4 time heating, and heating temperature is 830 DEG C, heating time 30min；Thin-wall bearing ferrule is fixed and the circumferential upper limit
System is loaded onto in quencher, and together with quenching treatment in thin-wall bearing ferrule and quenching tooling input quenching liquid, quenching liquid temperature is 150
DEG C, cool time 15min；After being cooled to room temperature, quenching tooling is separated with thin-wall bearing ferrule；Be placed in tempering furnace
180 DEG C of tempering 100min.
Embodiment 2；
First thin-wall bearing ferrule is preheated, preheating temperature is 800 DEG C, preheating time 20min；Thin-wall bearing ferrule is existed later
Carbon potential is 0.6 time heating, and heating temperature is 840 DEG C, heating time 40min；Thin-wall bearing ferrule is fixed and the circumferential upper limit
System is loaded onto in quencher, and together with quenching treatment in thin-wall bearing ferrule and quenching tooling input quenching liquid, quenching liquid temperature is 160
DEG C, cool time 20min；After being cooled to room temperature, quenching tooling is separated with thin-wall bearing ferrule；Be placed in tempering furnace
260 DEG C of tempering 130min.
Embodiment 3；
First thin-wall bearing ferrule is preheated, preheating temperature is 820 DEG C, preheating time 30min；Thin-wall bearing ferrule is existed later
Carbon potential is 0.8 time heating, and heating temperature is 850 DEG C, heating time 50min；Thin-wall bearing ferrule is fixed and the circumferential upper limit
System is loaded onto in quencher, and together with quenching treatment in thin-wall bearing ferrule and quenching tooling input quenching liquid, quenching liquid temperature is 170
DEG C, cool time 25min；After being cooled to room temperature, quenching tooling is separated with thin-wall bearing ferrule；Be placed in tempering furnace
280 DEG C of tempering 180min.
Embodiment 4；
First thin-wall bearing ferrule is preheated, preheating temperature is 800 DEG C, preheating time 15min；Thin-wall bearing ferrule is existed later
Carbon potential is 0.7 time heating, and heating temperature is 850 DEG C, heating time 50min；Thin-wall bearing ferrule is fixed and the circumferential upper limit
System is loaded onto in quencher, and together with quenching treatment in thin-wall bearing ferrule and quenching tooling input quenching liquid, quenching liquid temperature is 170
DEG C, cool time 20min；After being cooled to room temperature, quenching tooling is separated with thin-wall bearing ferrule；Be placed in tempering furnace
300 DEG C of 100 ~ 180min of tempering.
Embodiment 5；
First thin-wall bearing ferrule is preheated, preheating temperature is 800 DEG C, preheating time 10min；Thin-wall bearing ferrule is existed later
Carbon potential is 0.8 time heating, and heating temperature is 860 DEG C, heating time 40min；Thin-wall bearing ferrule is fixed and the circumferential upper limit
System is loaded onto in quencher, and together with quenching treatment in thin-wall bearing ferrule and quenching tooling input quenching liquid, quenching liquid temperature is 170
DEG C, cool time 20min；After being cooled to room temperature, quenching tooling is separated with thin-wall bearing ferrule；Be placed in tempering furnace
300 DEG C of tempering 130min.
Quencher wherein used in the respective embodiments described above fills specific as follows：The quenching tooling includes circular ring shape master
Body 1, radially half-and-half segmentation forms two valve semicircular rings 11 to cylindrical main body 1, and two valve semicircular rings 11 are combined in the two radially
The retaining mechanism 2 of connection is locked after opening split, the inner peripheral surface of semicircular ring 11 described in two valves is equipped with lasso card slot 111, lasso
The circumferential end 11-1 of the both ends perforation semicircular ring 11 of card slot 111, two valve semicircular rings 11 are buckled in thin-wall bearing through lasso card slot 111
In 9 outer circumferential sides of lasso, two valve semicircular rings 11 are locked by retaining mechanism 2, so as to form 1 banding thin-wall bearing of cylindrical main body
Lasso 9,111 axial centre position of lasso card slot are recessed with the annular groove 112 extended along lasso card slot 111, thin wall shaft bearing sleeve
The outer circumferential portion of circle 9 in 112 bottom of annular groove vacantly at annular groove 112, being equipped with radially perforation semicircular ring 11
Radial through-hole 113, and be arranged at intervals between the circumferential end of semicircular ring 11 described in two valves（Form interval trough a）.Quenching tooling is adopted
With radially half-and-half segmentation design, two semicircular rings for quenching tooling hold thin-wall bearing ferrule tightly, by controlling to thin-wall bearing
For the degree that lasso is held tightly so as to control the deformation quantity of thin-wall bearing ferrule, the realization of lasso card slot reliably positions bearing；Using
The mode of radial direction banding fixes thin-wall bearing ferrule, can effectively control the amount of swelling in thin-wall bearing ferrule quenching process,
Ovality, warpage；In quenching process, quenching liquid through the interval between the circumferential end of semicircular ring described in radial through-hole and two valves into
Enter annular groove, annular groove comes into full contact with convenient for quenching liquid with thin-wall bearing ferrule, so as to ensure that thin-wall bearing ferrule quenches
Completely.
In the adjustable interval setting of spacing between the circumferential end of semicircular ring 11 described in two valves, and the retaining mechanism 2
In semicircular ring 11 described in two valve of adjustable locking of spacing between 11 circumferential end 11-1 of semicircular ring described in controllable two valves.Institute
State retaining mechanism 2 include at 11 circumferential end of semicircular ring radially outward from engaging lug 21, at two of two valve semicircular rings 11
Engaging lug 21 is equipped at circumferential end, engaging lug 21 is equipped with bolt connecting hole 211, and the same side of two valve semicircular rings 11 connects
Ear is combined with the bolt/nut assemblies that the engaging lug 21 of two valve semicircular rings 11 is locked to connection；Concretely bolt 22 passes through two
Bolt connecting hole on engaging lug 21 in valve semicircular ring 11, the head of bolt 22 are contradicted with one of engaging lug, bolt 22
Screw rod end screws in nut 23, and nut 23 is contradicted with another engaging lug, is tensed so as to fulfill by the engaging lug on two valve semi-rings
Locking.Locking mechanism structure is simply and reliable, and disassembling operations are convenient.By between two semicircular ring circumferential end mosaics of control
Away from so as to preferably adapt to the outer diameter of bearing ring, the adjustment general to similar sizes bearing ring avoids similar sizes cannot
The drawbacks of intercommunication.Moreover, in the case of spacing is adjusted, bearing ring can preferably be controlled to quench deformation quantity.
Thin-wall bearing ferrule is heat-treated deformation situation such as following table in the various embodiments described above（Thin-wall bearing ferrule outer diameter is φ
250mm）：
It can thus be appreciated that：The ovality of thin-wall bearing ferrule, swell amount and warpage obtain under quenching processing technology through the invention
To being obviously improved；Thin-wall bearing ferrule is reduced because being scrapped caused by heat-treatment distortion, so as to improve stock utilization, all
The ratio for belonging to such situation in disabling elements falls to 5% by original 30%.
Claims (4)
1. a kind of frivolous bearing ring quenching heat treatment technique, carries out according to the following steps：
First thin-wall bearing ferrule is preheated, preheating temperature is 780 DEG C ~ 820 DEG C, and preheating time is 10 ~ 30min；Later by thin-walled
Bearing ring is 0.4 ~ 0.8 time heating in carbon potential, and heating temperature is 830 DEG C ~ 860 DEG C, and heating time is 30 ~ 60min；By thin-walled
Bearing ring is fixed and is limited in quencher on circumferential and loads onto, together with quenching in thin-wall bearing ferrule and quenching tooling input quenching liquid
Fire processing, quenching liquid temperature are 150 DEG C ~ 170 DEG C, and the cool time is 15 ~ 25min；After being cooled to room temperature, tooling and thin-walled are quenched
Bearing ring separates；Be placed in tempering furnace 180 DEG C ~ 300 DEG C be tempered 100 ~ 180min.
2. frivolous bearing ring quenching heat treatment technique according to claim 1, it is characterised in that：The quenching tooling includes
Cylindrical main body, radially half-and-half segmentation forms two valve semicircular rings to cylindrical main body, and two valve semicircular rings are combined in the two along diameter
The retaining mechanism of connection is locked after opening split, the inner peripheral surface of semicircular ring described in two valves is equipped with lasso card slot, lasso card slot
Both ends perforation semicircular ring circumferential end, two valve semicircular rings are buckled in through lasso card slot in thin-wall bearing ferrule outer circumferential sides, after
Two valve semicircular rings are locked through retaining mechanism, so as to form cylindrical main body banding thin-wall bearing ferrule, lasso card slot axial centre
Position is recessed with the annular groove extended along lasso card slot, and the outer circumferential portion of thin-wall bearing ferrule is vacantly to annular groove
Place is equipped with the radial through-hole for radially penetrating through semicircular ring in annular groove bottom, and between the circumferential end of semicircular ring described in two valves
It is arranged at intervals.
3. frivolous bearing ring quenching heat treatment technique according to claim 2, it is characterised in that：Semicircular ring described in two valves
In the adjustable interval setting of spacing between circumferential end, and the retaining mechanism is in semicircular ring circumferential direction end described in controllable two valves
Semicircular ring described in two valve of adjustable locking of spacing between portion.
4. frivolous bearing ring quenching heat treatment technique according to claim 3, it is characterised in that：The retaining mechanism includes
Have at semicircular ring circumferential end radially outward from engaging lug, be equipped with connection at two circumferential ends of two valve semicircular rings
Ear, engaging lug are equipped with bolt connecting hole, and the same side engaging lug of two valve semicircular rings is combined with the engaging lug of two valve semicircular rings
Lock the bolt/nut assemblies of connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161998.1A CN108251630A (en) | 2018-02-27 | 2018-02-27 | Frivolous bearing ring quenching heat treatment technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161998.1A CN108251630A (en) | 2018-02-27 | 2018-02-27 | Frivolous bearing ring quenching heat treatment technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108251630A true CN108251630A (en) | 2018-07-06 |
Family
ID=62745353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810161998.1A Pending CN108251630A (en) | 2018-02-27 | 2018-02-27 | Frivolous bearing ring quenching heat treatment technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108251630A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394401A (en) * | 2019-08-29 | 2019-11-01 | 洛阳Lyc轴承有限公司 | A kind of shaping methods and shaping mould of high-carbon chromium steel thin-wall bearing ferrule |
| CN111218549A (en) * | 2018-11-27 | 2020-06-02 | 江苏越众医疗科技有限公司 | Heat treatment process for medical minimally invasive surgical anastomat part |
| CN113046542A (en) * | 2021-03-12 | 2021-06-29 | 八环科技集团股份有限公司 | Tempering processing technology for vibration reduction bearing groove ring |
| CN115094369A (en) * | 2022-06-13 | 2022-09-23 | 浙江理工大学常山研究院有限公司 | Quenching heat treatment process for light and thin bearing ring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050069259A (en) * | 2003-12-31 | 2005-07-05 | 에프에이지베어링코리아유한회사 | Heat-treatment method for thin wall ring |
| CN102416414A (en) * | 2011-09-16 | 2012-04-18 | 湖北三江航天江北机械工程有限公司 | Method for controlling accuracy of shape of ultrahigh-strength steel thin-wall cylinder |
| CN203065532U (en) * | 2013-01-06 | 2013-07-17 | 索特传动设备有限公司 | Quenching shape-limiting mold for gear ring |
| CN104328266A (en) * | 2014-12-02 | 2015-02-04 | 江阴吉爱倍万达精工有限公司 | Heat treatment process of large-diameter thin-walled bearing ring |
-
2018
- 2018-02-27 CN CN201810161998.1A patent/CN108251630A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050069259A (en) * | 2003-12-31 | 2005-07-05 | 에프에이지베어링코리아유한회사 | Heat-treatment method for thin wall ring |
| CN102416414A (en) * | 2011-09-16 | 2012-04-18 | 湖北三江航天江北机械工程有限公司 | Method for controlling accuracy of shape of ultrahigh-strength steel thin-wall cylinder |
| CN203065532U (en) * | 2013-01-06 | 2013-07-17 | 索特传动设备有限公司 | Quenching shape-limiting mold for gear ring |
| CN104328266A (en) * | 2014-12-02 | 2015-02-04 | 江阴吉爱倍万达精工有限公司 | Heat treatment process of large-diameter thin-walled bearing ring |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111218549A (en) * | 2018-11-27 | 2020-06-02 | 江苏越众医疗科技有限公司 | Heat treatment process for medical minimally invasive surgical anastomat part |
| CN110394401A (en) * | 2019-08-29 | 2019-11-01 | 洛阳Lyc轴承有限公司 | A kind of shaping methods and shaping mould of high-carbon chromium steel thin-wall bearing ferrule |
| CN113046542A (en) * | 2021-03-12 | 2021-06-29 | 八环科技集团股份有限公司 | Tempering processing technology for vibration reduction bearing groove ring |
| CN115094369A (en) * | 2022-06-13 | 2022-09-23 | 浙江理工大学常山研究院有限公司 | Quenching heat treatment process for light and thin bearing ring |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 325000 Binhai five road 515, Wenzhou economic and Technological Development Zone, Zhejiang Applicant after: C&U Co.,Ltd. Applicant after: SHANGHAI C&U GROUP Co.,Ltd. Applicant after: HANGZHOU BEARING GROUP Co.,Ltd. Applicant after: HANGZHOU C&U MIDDLE BEARING CO.,LTD. Address before: 325000 Binhai five road 515, Wenzhou economic and Technological Development Zone, Zhejiang Applicant before: C & U Group Ltd. Applicant before: SHANGHAI C&U GROUP Co.,Ltd. Applicant before: HANGZHOU BEARING GROUP Co.,Ltd. Applicant before: HANGZHOU C&U MIDDLE BEARING Co.,Ltd. |
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| CB02 | Change of applicant information |
Address after: 325000 Binhai five road 515, Wenzhou economic and Technological Development Zone, Zhejiang Applicant after: C&U Co.,Ltd. Applicant after: SHANGHAI C&U GROUP Co.,Ltd. Applicant after: HANGZHOU BEARING GROUP Co.,Ltd. Applicant after: Hangzhou Renben Motor Bearings Co.,Ltd. Address before: 325000 Binhai five road 515, Wenzhou economic and Technological Development Zone, Zhejiang Applicant before: C&U Co.,Ltd. Applicant before: SHANGHAI C&U GROUP Co.,Ltd. Applicant before: HANGZHOU BEARING GROUP Co.,Ltd. Applicant before: HANGZHOU C&U MIDDLE BEARING CO.,LTD. |