CN109082504A - A kind of super-huge 42CrMo double-split bearing ring raceway face process for quenching - Google Patents
A kind of super-huge 42CrMo double-split bearing ring raceway face process for quenching Download PDFInfo
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- CN109082504A CN109082504A CN201810988137.0A CN201810988137A CN109082504A CN 109082504 A CN109082504 A CN 109082504A CN 201810988137 A CN201810988137 A CN 201810988137A CN 109082504 A CN109082504 A CN 109082504A
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- 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
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Crystallography & Structural Chemistry (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Rolling Contact Bearings (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention belongs to super-huge double-split bearing ring raceway Medium frequency induction method for quenching surface, propose super-huge 42CrMo double-split bearing ring raceway face process for quenching.The super-huge 42CrMo double-split bearing ring raceway face process for quenching proposed, the processing step of process for quenching are as follows: annulus or arc section forging → rough turn processing → finishing processing → raceway Medium frequency induction surface hardening → outer diameter, internal diameter Medium frequency induction surface hardening → wire cutting subdivision → hole machined → finishing；To bearing ring internal diameter or outer diameter carry out Medium frequency induction surface hardening when, the raceway face hardened area of super-huge split bearing outer ring arc section is consistent with outer diameter hardened area area；The raceway face hardened area of inner ring arc section is consistent with internal diameter hardened area area, quenches height H according to external diameter surface, inside diameter surface quenching height h processes outer diameter quenching quencher, internal diameter quenching quencher.Present invention reduces the rejection rates of surface hardening deformation, improve production efficiency.
Description
Technical field
The invention belongs to super-huge double-split bearing ring raceway Medium frequency induction method for quenching surface, relate generally to a kind of especially big
Type 42CrMo double-split bearing ring raceway face process for quenching.
Background technique
Super-huge (2000~10000mm) split bearing has the advantages that convenient transportation, installation and removal, can also save
Cost and disassembly and assembly time；Suitable for some industrial circles for being difficult to integral disassembly, assembly；A kind of material of super-huge double-split bearing ring
For 42CrMo, raceway uses Medium frequency induction surface hardening, obtains higher intensity and wearability, surface quenching and hardening layer depth tool
There is 4.5mm or more；Its structure is inner ring by two sections or multi-section circular arc spliced whole circle, and outer ring is equally spliced by two sections or multi-section circular arc
Whole circle, stitching portion is by pin and being bolted, there is not allowed that step, the defects of distortion or splicing gap are excessive after connecting.
Arc section raceway uses Medium frequency induction surface hardening, and structural transformation is martensite, needs rapid cooling, generates huge
Big internal stress, very big deformation occurs for arc section, subsequent to be spliced into full circle, also can not carry out cavetto by processing.
After arc section raceway Medium frequency induction surface hardening at present, differ before circular arc deformation and quenching up to 15mm, splicing
The gap in connected face is up to 2mm afterwards, and when the excessive bearing in gap rotates, clamping stagnation occurs here in rolling element.It is needed after splicing
Cavetto amount is excessive, and the hardened-depth of surface hardening not can guarantee yet.It needs to take shaping, i.e., does not carry out surface hardening in opposite
Face flame heats rapid cooling, and production efficiency is very low, and rejection rate is also very high, shaping crackle is also easy to produce, after shaping
The interior tissue stress of arc section is that unevenly, being machined shaping position again will cause secondary deformation, it has to repeatedly whole
Shape, it is ensured that can reach full circle after arc section splicing.
Summary of the invention
In order to solve the above technical problems, the purpose of the present invention is to propose to a kind of super-huge 42CrMo double-split bearing ring raceways
Method for quenching surface.Make its arc section surface hardening interior stress balance, it is ensured that arc section surface hardening is indeformable, solves especially big
Multiple shaping after the quenching of type double-split bearing ring arc section, the problem of easily causing waste product, while improving production efficiency.
In order to realize the purpose of foregoing invention, the present invention adopts the following technical scheme:
A kind of super-huge 42CrMo double-split bearing ring raceway face process for quenching, the processing step of the process for quenching are as follows:
Annulus or arc section forging → rough turn processing → finishing processing → raceway Medium frequency induction surface hardening → outer diameter, internal diameter Medium frequency induction
Surface hardening → wire cutting subdivision → hole machined → finishing；To bearing ring internal diameter or outer diameter carry out Medium frequency induction surface
When quenching, the raceway face hardened area of super-huge split bearing outer ring arc section is consistent with outer diameter hardened area area；Inner ring
The raceway face hardened area of arc section is consistent with internal diameter hardened area area, i.e., the calculation method of surface hardening region area by
Outer ring raceway diameter D1；Raceway arc radius R, outer diameter D；Area S1=π R* π * D1 of raceway hardened area；It is calculated outer
Diameter surface hardening height H=S1/ π * D.By inner ring raceway diameter d1；Raceway arc radius r, internal diameter d；Raceway hardened area
Area S2=π r* π * d1；Inside diameter surface quenching height h=S2/ π * d is calculated；Height H, inside meter are quenched according to external diameter surface
Face quenches height h processing outer diameter quenching quencher, internal diameter quenching quencher, is equal to the height of outer diameter quenching quencher
External diameter surface quenches height H, and the height of the quencher of internal diameter quenching is equal to inside diameter surface and quenches height r；The outer diameter is quenched
Fiery quencher is correspondingly arranged with corresponding bearing outer ring, then swivel bearing outer ring, makes the outer diameter quenching quencher
Impewdance matching is carried out to bearing outer ring, the internal diameter quenching is correspondingly arranged with quencher and corresponding bearing inner race, so
Swivel bearing inner ring afterwards makes the internal diameter quenching carry out impewdance matching to bearing inner race with quencher, guarantees surfaces externally and internally
It is consistent to quench area；Intermediate frequency surface hardening parameter are as follows: quenching 25~35KW of power；860~920 DEG C of surface hardening temperature；It is cooling
Liquid concentration 12~18%, 20~40 DEG C of temperature；Quench 2~4mm of coupling gap；120~200mm/min of workpiece rotational frequency;Surface hardening
After must carry out being tempered stable processing, 170 DEG C of tempering temperature, 4~8 hours.
Lasso to bearing outer ring or bearing inner ring interior diameter less than 5000mm generally takes full circle ring forging machine-shaping, into
The quenching of row surfaces externally and internally, then carrying out wire cutting subdivision is arc section, is spliced into full circle after finishing.
Lasso to bearing outer ring or bearing inner ring interior diameter greater than 5000mm is generally taken to be formed using circular arc forging process,
Milling Machining conjunction plane, then each arc section is subjected to surfaces externally and internally quenching respectively, quenched multiple arc sections are finally passed through into connection
Connecting bolt connection is full circle.
One kind proposed by the present invention is adapted to super-huge double-split bearing ring raceway Medium frequency induction surface hardening technology, uses
Above-mentioned technical proposal has the following beneficial effects:
It is quenched using the Medium frequency induction surface hardening technology processing oversize double-split bearing ring raceway face, makes super-huge subdivision
After bearing collar path Medium frequency induction surface hardening, lasso subdivision arc section internal and external parts stress equilibrium reduces arc section
Deflection；It using quenching technology of the present invention, is not required to carry out full circle again, reduces the rejection rate of surface hardening deformation, improve
Production efficiency.
Detailed description of the invention
Fig. 1 is super-huge subdivision four-point contact ball structural schematic diagram.
Fig. 2 is outer collar arc section intermediate frequency surface hardening schematic diagram.
Fig. 3 is inside race arc section intermediate frequency surface hardening schematic diagram.
In figure: 1, outer ring, 2, inner ring, 3, inner ring articulation hole attachment bolt, 4, outer ring articulation hole attachment bolt, 5, first is close
Seal, 6, retainer, the 7, second sealing ring, 8, steel ball, 9, taper pin, 10, plug.
Specific embodiment
Present invention will be further described below with reference to the accompanying drawings and specific embodiments:
Super-huge subdivision four-point contact ball as shown in Figure 1, internal diameter φ 2785mm, bearing outer ring (1) are two semicircle segmental arcs
Composition, two half-turns be connected position using articulation hole attachment bolt (4) connection；Bearing inner race (2) is two semicircle segmental arc groups
Articulation hole attachment bolt (3) are used to couple at, two half-turns position that is connected.After lasso raceway intermediate frequency surface hardening, to obtain
Indeformable arc section, specific processing method are as follows:
1. surface hardening scheme
Keep the raceway face hardened area of super-huge split bearing outer ring (1) arc section consistent with outer diameter hardened area area；It is interior
The raceway face hardened area for enclosing (2) arc section is consistent with internal diameter hardened area area, guarantees lasso using this process for quenching
The stress equilibrium of the raceway of subdivision section and the quenching of corresponding outer diameter or inside diameter surface prevents lasso subdivision section because of quenching stress unevenness
And it is deformed.
The calculating outer ring raceway diameter D1 of surface hardening region area as shown in Figure 2；Raceway arc radius R, outer diameter D；
Area S1=π R* π * D1 of raceway hardened area；External diameter surface quenching height H=S1/ π * D is calculated；
The calculating inner ring raceway diameter d1 of surface hardening region area as shown in Figure 3；Raceway arc radius r, internal diameter d；Raceway
Area S2=π r* π * d1 of hardened area；External diameter surface quenching height h=S2/ π * d is calculated；
2. process flow
Ring quenching technique for outer ring 1 or 2 internal diameter of inner ring less than 5000mm is full circle ring forging → rough turn processing → smart car
Processing → raceway Medium frequency induction surface hardening → outer diameter (or internal diameter) Medium frequency induction surface hardening → wire cutting subdivision → hole machined
→ finishing；
Ring quenching technique for outer ring 1 or 2 internal diameter of inner ring greater than 5000mm is arc section forging → rough turn processing → smart car
Processing → milling conjunction plane → raceway Medium frequency induction surface hardening → outer diameter (or internal diameter) Medium frequency induction surface hardening → refine connection
Face → hole machined → finishing；
3. intermediate frequency surface hardening procedure of processing
Mid frequency induction hardening profiling circular arc inductor is made according to 1 raceway curvature R of outer ring, using circular arc R inductor, it is right to rotate outer ring 1
Raceway carries out impewdance matching, then adjusts lathe, and what is calculated in operational version arrives length H inductor, and rotation outer ring 1 carries out outer diameter
Impewdance matching guarantees that the quenching area of surfaces externally and internally is consistent；
Mid frequency induction hardening profiling circular arc inductor is made according to 2 raceway curvature r of inner ring, using circular arc r inductor, temperature of inner ring during rotation 2 is right
Raceway carries out impewdance matching, then adjusts lathe, and what is calculated in operational version arrives length h inductor, and temperature of inner ring during rotation 2 carries out internal diameter
Impewdance matching guarantees that the quenching area of surfaces externally and internally is consistent.
4. intermediate frequency surface hardening parameter
Outer ring (1) raceway and outer surface, inner ring (2) raceway and inner surface are according to hardening depth selective quenching parameter；Its
Quench 25~35KW of power；860~920 DEG C of surface hardening temperature；Coolant liquid concentration 12~18%, 20~40 DEG C of temperature；Quench coupling
Close 2~4mm of gap；The parameter of 120~200mm/min of workpiece rotational frequency, raceway face quenching are shown in Table 1.It must be into after surface hardening
Row tempering, which is stablized, to be handled, and 170 DEG C of tempering temperature, 4~8 hours.
1 track middle frequency quenching parameter list of table
Claims (3)
1. a kind of super-huge 42CrMo double-split bearing ring raceway face process for quenching, the processing step of the process for quenching
Are as follows: annulus or arc section forging → rough turn processing → finishing processing → raceway Medium frequency induction surface hardening → outer diameter, internal diameter intermediate frequency
Sensitive surface quenching → wire cutting subdivision → hole machined → finishing；It is characterized by: in internal diameter or outer diameter to bearing ring
When carrying out Medium frequency induction surface hardening, the raceway face hardened area and outer diameter quenching area of super-huge split bearing outer ring arc section
Domain area is consistent；The raceway face hardened area of inner ring arc section is consistent with internal diameter hardened area area, i.e. surface hardening region
The calculation method of area is by outer ring raceway diameter D1；Outer ring raceway arc radius R, outer diameter D；The area S1 of raceway hardened area
=πR*π*D1；External diameter surface quenching height H=S1/ π * D is calculated；By inner ring raceway diameter d1；Outer ring raceway arc radius
R, internal diameter d；Area S2=π r* π * d1 of raceway hardened area；Inside diameter surface quenching height h=S2/ π * d is calculated；According to
External diameter surface quenches height H, inside diameter surface quenching height h processing outer diameter quenching quencher, internal diameter quenching quencher, makes outer
The height of diameter quenching quencher is equal to external diameter surface and quenches height H, and the height of the quencher of internal diameter quenching is equal to inside diameter surface
Quench height r；The outer diameter quenching quencher is correspondingly arranged with corresponding bearing outer ring, then swivel bearing outer ring,
The outer diameter quenching is set to carry out impewdance matching to bearing outer ring with quencher, the internal diameter quenching quencher and institute is right
The bearing inner race answered is correspondingly arranged, then swivel bearing inner ring, carries out the internal diameter quenching to bearing inner race with quencher
Impewdance matching guarantees that the quenching area of surfaces externally and internally is consistent；Intermediate frequency surface hardening parameter are as follows: quenching 25~35KW of power；Surface
860~920 DEG C of hardening heat；Coolant liquid concentration 12~18%, 20~40 DEG C of temperature；Quench 2~4mm of coupling gap；Workpiece rotational frequency
120~200mm/min;It must carry out being tempered stable processing after surface hardening, 170 DEG C of tempering temperature, 4~8 hours.
2. a kind of super-huge 42CrMo double-split bearing ring raceway face process for quenching as described in claim 1, feature exist
Full circle ring forging machine-shaping is generally taken in: the lasso to bearing outer ring or bearing inner ring interior diameter less than 5000mm, in progress
Outer surface quenching, then carrying out wire cutting subdivision is arc section, is spliced into full circle after finishing.
3. a kind of super-huge 42CrMo double-split bearing ring raceway face process for quenching as described in claim 1, feature exist
In: the lasso to bearing outer ring or bearing inner ring interior diameter greater than 5000mm is generally taken to be formed using circular arc forging process, and milling adds
Union junction, then each arc section is subjected to surfaces externally and internally quenching respectively, quenched multiple arc sections are finally passed through into connection spiral shell
Bolt connection is full circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988137.0A CN109082504A (en) | 2018-08-28 | 2018-08-28 | A kind of super-huge 42CrMo double-split bearing ring raceway face process for quenching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988137.0A CN109082504A (en) | 2018-08-28 | 2018-08-28 | A kind of super-huge 42CrMo double-split bearing ring raceway face process for quenching |
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| CN109082504A true CN109082504A (en) | 2018-12-25 |
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| CN201810988137.0A Pending CN109082504A (en) | 2018-08-28 | 2018-08-28 | A kind of super-huge 42CrMo double-split bearing ring raceway face process for quenching |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021224139A1 (en) * | 2020-05-05 | 2021-11-11 | thyssenkrupp rothe erde Germany GmbH | Method for producing ring segments, and ring segment for a segmented rolling bearing ring having a hardened rolling bearing raceway |
| CN113695845A (en) * | 2021-08-10 | 2021-11-26 | 洛阳轴承研究所有限公司 | Method for machining floating ring of main drive bearing of tunneling machine |
| CN114058792A (en) * | 2021-11-05 | 2022-02-18 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Operating mechanism and method for induction quenching of segmented surface of bearing ring with super-large diameter |
| CN115181833A (en) * | 2022-07-20 | 2022-10-14 | 洛阳鹏丰轴承制造有限公司 | Quenching method for double-row four-point contact ball bearing ring double-raceway surface |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671768A (en) * | 2009-09-28 | 2010-03-17 | 江阴嘉鑫风电轴承有限公司 | Method for correcting quenching deformation out-of-tolerance of bearing ring of wind driven generator |
| CN106609322A (en) * | 2015-10-23 | 2017-05-03 | 舍弗勒技术股份两合公司 | Bearing ring and heat treatment method thereof |
-
2018
- 2018-08-28 CN CN201810988137.0A patent/CN109082504A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671768A (en) * | 2009-09-28 | 2010-03-17 | 江阴嘉鑫风电轴承有限公司 | Method for correcting quenching deformation out-of-tolerance of bearing ring of wind driven generator |
| CN106609322A (en) * | 2015-10-23 | 2017-05-03 | 舍弗勒技术股份两合公司 | Bearing ring and heat treatment method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 端木培兰等: "盾构轴承滚道的中频淬火工艺", 《轴承》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021224139A1 (en) * | 2020-05-05 | 2021-11-11 | thyssenkrupp rothe erde Germany GmbH | Method for producing ring segments, and ring segment for a segmented rolling bearing ring having a hardened rolling bearing raceway |
| CN113695845A (en) * | 2021-08-10 | 2021-11-26 | 洛阳轴承研究所有限公司 | Method for machining floating ring of main drive bearing of tunneling machine |
| CN114058792A (en) * | 2021-11-05 | 2022-02-18 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Operating mechanism and method for induction quenching of segmented surface of bearing ring with super-large diameter |
| CN115181833A (en) * | 2022-07-20 | 2022-10-14 | 洛阳鹏丰轴承制造有限公司 | Quenching method for double-row four-point contact ball bearing ring double-raceway surface |
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Application publication date: 20181225 |