CN108823375A - A kind of bearing ring residual temperature annealing process - Google Patents
A kind of bearing ring residual temperature annealing process Download PDFInfo
- Publication number
- CN108823375A CN108823375A CN201811094307.7A CN201811094307A CN108823375A CN 108823375 A CN108823375 A CN 108823375A CN 201811094307 A CN201811094307 A CN 201811094307A CN 108823375 A CN108823375 A CN 108823375A
- Authority
- CN
- China
- Prior art keywords
- bearing
- residual temperature
- furnace
- temperature annealing
- temperature
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- 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
- Y02P10/20—Recycling
Abstract
The present invention relates to a kind of bearing ring residual temperature annealing process, bearing ring manufacture craft includes the following steps：(1) raw material of bearing ferrule blanks are put into heating 40min~60min in 1100 DEG C~1225 DEG C of heating furnace；(2) heating furnace out when the temperature of raw material reaches 1125 DEG C~1200 DEG C, raw material are forged, bearing ferrule blanks are forged into；(3) residual temperature annealing process is carried out；When the temperature of bearing ferrule blanks is at 800 DEG C~1225 DEG C, bearing ferrule blanks is put into the furnace body of residual temperature annealing furnace, is annealed using the residual temperature of bearing ferrule blanks；The residual temperature annealing furnace includes insulating layer, thermocouple and conveyer belt；(4) annealing temperature of residual temperature annealing furnace is maintained at 700 DEG C~800 DEG C, and anneal duration is no less than 2h, and bearing ferrule blanks are with the operating of conveyer belt to the discharge port of residual temperature annealing furnace, and residual temperature annealing furnace rear bearing collar blank is cooled to room temperature out.The present invention effectively reduces the loss of heat, energy saving, saves material, reduces production cost.
Description
Technical field
The present invention relates to bearing technical field of forging, in particular to a kind of bearing ring residual temperature annealing process.
Background technique
Bearing belongs to standard component, is widely used in the industrial production, and production batch is huge.Traditional bearing ring production
Basic procedure is needed by following process：Raw material blanking-heating-forging-of the major part collar blank of bearing composition
Cooling-heating-cooling-sandblasting.The main purpose of lasso annealing is to be easy to subsequent turning processing to reduce forging hardness,
It prepares for secondary heating, cooling.Conventional process flow uses electric heating annealing furnace or heated by natural gas push rod furnace.Tradition
Process flow needs to heat twice, and the temperature of heating controls the temperature control of second of heating at 1100 DEG C~1225 DEG C for the first time
System is at 680 DEG C~690 DEG C.Conventional process flow comes out and cools down from second of heating-annealing-furnace cooling-as a week
Phase, when a cycle a length of 12h.The link heated twice consumes a large amount of thermal energy, increases material oxidation loss.Traditional handicraft is unfavorable
In environmental protection, and the high production cost of bearing.
Summary of the invention
In view of the deficiencies of the prior art, the invention discloses a kind of bearing ring residual temperature annealing process.
The technical solution adopted in the present invention is as follows：
A kind of bearing ring residual temperature annealing process, bearing ring manufacture craft include the following steps：
(1) raw material of bearing ferrule blanks are put into 1100 DEG C~1225 DEG C of heating furnace heat 40min~
60min；
(2) heating furnace out when the temperature of raw material reaches 1125 DEG C~1225 DEG C, raw material are forged, are forged into
The bearing ferrule blanks of annular；
(3) residual temperature annealing process is carried out；When the temperature of bearing ferrule blanks is at 800 DEG C~1000 DEG C, by bearing ring
Blank is put into furnace body from the feed inlet of residual temperature annealing furnace, is annealed using the residual temperature of bearing ferrule blanks；The residual temperature is moved back
Stove includes the insulating layer for being mounted on furnace body inside, drives along the thermocouple uniformly installed of length direction of furnace roof and with stepless speed regulation
Dynamic conveyer belt；
(4) temperature in the thermocouple monitoring residual temperature annealing furnace；The insulating layer makes the annealing temperature of residual temperature annealing furnace
It is maintained at 700 DEG C~800 DEG C, anneal duration is no less than 2h, and bearing ferrule blanks are with the operating of conveyer belt to residual temperature annealing furnace
Discharge port, residual temperature annealing furnace rear bearing collar blank is cooled to room temperature out.
Its further technical characteristic is：The raw material for forming the major part collar blank of bearing are put into 1180 DEG C of furnace
Interior heating 40min~60min.
Its further technical characteristic is：When the temperature of bearing ferrule blanks is at 800 DEG C, it is put into the utilization of residual temperature annealing furnace
The residual temperature of bearing ferrule blanks is annealed.
Its further technical characteristic is：The temperature of the residual temperature annealing furnace is maintained at 700 DEG C, and anneal duration is no less than
2h, bearing ferrule blanks are cooled to room temperature with residual temperature annealing furnace.
Beneficial effects of the present invention are as follows：
The present invention is kept the temperature, bearing using the waste heat after bearing ferrule blanks forging in the insulated wall of residual temperature annealing furnace inner wall
Lasso forging is mobile with furnace, anneals, is finally gradually cooled to room temperature simultaneously.Compared with traditional handicraft, this process flow is only heated
Once, it is identical as the heating duration and temperature condition that the first time of traditional handicraft heats to heat duration and temperature condition.The present invention
Second of heating is not needed, equally reaches bearing ferrule blanks annealing purpose, effectively reduces the loss of heat, energy saving, section
Material saving reduces production cost.
Relative to traditional handicraft, in the beneficial effect that actual production process generates：It 240 KWhs/ton of forging using electricity wisely, saves
192 yuan/ton of the electricity charge；Primary heating is reduced, material fire consumption 0.5% is saved, saves 25 yuan/ton of fee of material；Reduce primary heating work
Sequence shortens production cycle 1.5h/ tons.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
Fig. 1 is flow chart of the invention.As shown in Figure 1, a kind of bearing ring residual temperature annealing process, bearing ring makes work
Skill includes the following steps：
(1) raw material of bearing ferrule blanks are put into 1100 DEG C~1225 DEG C of heating furnace heat 40min~
60min。
(2) heating furnace out when the temperature of raw material reaches 1125 DEG C~1225 DEG C, raw material are forged, are forged into
The bearing ferrule blanks of annular.
(3) annealing process is carried out；When the temperature of bearing ferrule blanks is at 800 DEG C~1000 DEG C, by bearing ferrule blanks
It is put into furnace body from the feed inlet of residual temperature annealing furnace, is annealed using the residual temperature of bearing ferrule blanks.Residual temperature annealing furnace includes
Be mounted on furnace body inside insulating layer, along furnace roof length direction be uniformly equipped with thermocouple and with stepless speed regulation drive transmission
Band.
(4) temperature in the thermocouple monitoring residual temperature annealing furnace of furnace roof, insulating layer protect the temperature of residual temperature anneal
It holds at 700 DEG C~800 DEG C.Under 700 DEG C~800 DEG C of high-temperature of the bearing blank in residual temperature annealing furnace, long-time heat preservation, so
Slow cooling gets off afterwards, and insulating layer effectively controls in-furnace temperature.Anneal duration is no less than 2h, and bearing ferrule blanks are with conveyer belt
It operates to the discharge port of residual temperature annealing furnace.Residual temperature annealing furnace rear bearing collar blank is cooled to room temperature out, cooling rear axle bearing ring
The hardness of blank can achieve 205HB~229HB, be pressed into tested metal with the hardened steel ball that a certain size load is diameter
Material surface keeps load removal after a period of time.The ratio of load and indentation surface product is ball hardness number, is denoted as HB.
Hardness 205HB~229HB meets the carburizing bearing forging standard of JBT10138-1999.
Technical solution of the present invention is illustrated following with three embodiments.
Embodiment 1：
(1) material used in the outer ring for the railway bearing lasso that preparation bearing designation is 353130B is
G20CrNi2MoA, G20CrNi2MoA are a kind of good alloy carburizing steels.Material G20CrNi2Mo A is put into set temperature
To heat 40min in 1100 DEG C of heating furnaces.
(2) heating furnace out when the initial forging temperature of material G20CrNi2MoA reaches 1100 DEG C, is forged.Forging cyclization
The bearing ferrule blanks of shape.
(3) when the final forging temperature of bearing ferrule blanks is at 800 DEG C, by bearing ferrule blanks from the feed inlet of residual temperature annealing furnace
It is put into furnace body, is annealed using the residual temperature of bearing ferrule blanks.
(4) furnace roof thermocouple monitor residual temperature temperature, insulating layer make the temperature in residual temperature annealing furnace be maintained at 700 DEG C~
800 DEG C, anneal duration 2h.Bearing ferrule blanks are with the operating of conveyer belt to the discharge port of residual temperature annealing furnace, and residual temperature is annealed out
Furnace rear bearing collar blank is cooled to room temperature, and the hardness of cooling rear bearing collar blank can achieve 220HB.The inside group of lasso
Knit the requirement that the process of railway bearing lasso is prepared with mechanical property and subsequent turnery processing etc..
Embodiment 2：
(1) material G20CrNi2MoA is put into the heating furnace that set temperature is 1200 DEG C and heats 60m in.
(2) heating furnace out when the initial forging temperature of material G20CrNi2MoA reaches 1200 DEG C, is forged.Forging cyclization
The bearing ferrule blanks of shape.
(3) when the final forging temperature of bearing ferrule blanks is at 1000 DEG C, by bearing ferrule blanks from the charging of residual temperature annealing furnace
Mouth is put into furnace body, is annealed using the residual temperature of bearing ferrule blanks.
(4) thermocouple of furnace roof monitors residual temperature temperature, and insulating layer makes the temperature in residual temperature annealing furnace be maintained at 800 DEG C, moves back
A length of 2h when fiery.Bearing ferrule blanks with the operating of conveyer belt to the discharge port of residual temperature annealing furnace, residual temperature annealing furnace rear bearing out
Collar blank is cooled to room temperature, and the hardness of cooling rear bearing collar blank can achieve 210HB.The interior tissue and mechanics of lasso
Performance and subsequent turnery processing etc. prepare the requirement of the process of railway bearing lasso.
Embodiment 3：
(1) material G20CrNi2MoA is put into the heating furnace that set temperature is 1180 DEG C and heats 60m in.
(2) heating furnace out when the initial forging temperature of material G20CrNi2MoA reaches 1130 DEG C, is forged.Forging cyclization
The bearing ferrule blanks of shape.
(3) when the final forging temperature of bearing ferrule blanks is at 900 DEG C, by bearing ferrule blanks from the feed inlet of residual temperature annealing furnace
It is put into furnace body, is annealed using the residual temperature of bearing ferrule blanks.
(4) furnace roof thermocouple monitor residual temperature temperature, insulating layer make the temperature in residual temperature annealing furnace be maintained at 700 DEG C~
800 DEG C, anneal duration 2h.Bearing ferrule blanks are with the operating of conveyer belt to the discharge port of residual temperature annealing furnace, and residual temperature is annealed out
Furnace rear bearing collar blank is cooled to room temperature, and the hardness of cooling rear bearing collar blank can achieve 215HB.The inside group of lasso
Knit the requirement that the process of railway bearing lasso is prepared with mechanical property and subsequent turnery processing etc..
Above description is explanation of the invention, is not intended to limit the invention, and limited range of the present invention is referring to right
It is required that the present invention can make any type of modification without prejudice to basic structure of the invention.
Claims (4)
1. a kind of bearing ring residual temperature annealing process, it is characterised in that：Bearing ring manufacture craft includes the following steps：
(1) raw material of bearing ferrule blanks are put into heating 40min~60min in 1100 DEG C~1225 DEG C of heating furnace；
(2) heating furnace out when the temperature of raw material reaches 1125 DEG C~1225 DEG C, raw material is forged, forging circularizes
Bearing ferrule blanks；
(3) residual temperature annealing process is carried out；When the temperature of bearing ferrule blanks is at 800 DEG C~1225 DEG C, by bearing ferrule blanks
It is put into furnace body from the feed inlet of residual temperature annealing furnace, is annealed using the residual temperature of bearing ferrule blanks；The residual temperature annealing furnace
Including being mounted on the insulating layer of furnace body inside, driving along the thermocouple uniformly installed of length direction of furnace roof and with stepless speed regulation
Conveyer belt；
(4) temperature in the thermocouple monitoring residual temperature annealing furnace；The insulating layer keeps the annealing temperature of residual temperature annealing furnace
At 700 DEG C~800 DEG C, anneal duration is no less than 2h, bearing ferrule blanks with conveyer belt operating to residual temperature annealing furnace discharging
Mouthful, residual temperature annealing furnace rear bearing collar blank is cooled to room temperature out.
2. bearing ring residual temperature annealing process according to claim 1, it is characterised in that：Form the major part set of bearing
The raw material of circle blank, which are put into 1180 DEG C of furnace, heats 40min~60min.
3. bearing ring residual temperature annealing process according to claim 1, it is characterised in that：When the temperature of bearing ferrule blanks
At 800 DEG C, it is put into residual temperature annealing furnace and is annealed using the residual temperature of bearing ferrule blanks.
4. bearing ring residual temperature annealing process according to claim 1, it is characterised in that：The temperature of the residual temperature annealing furnace
700 DEG C are maintained at, anneal duration is no less than 2h, and bearing ferrule blanks are cooled to room temperature with residual temperature annealing furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811094307.7A CN108823375A (en) | 2018-09-19 | 2018-09-19 | A kind of bearing ring residual temperature annealing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811094307.7A CN108823375A (en) | 2018-09-19 | 2018-09-19 | A kind of bearing ring residual temperature annealing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108823375A true CN108823375A (en) | 2018-11-16 |
Family
ID=64149397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811094307.7A Pending CN108823375A (en) | 2018-09-19 | 2018-09-19 | A kind of bearing ring residual temperature annealing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108823375A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762969A (en) * | 2019-03-27 | 2019-05-17 | 滁州兄弟科技有限公司 | A kind of annealing furnace having detection function |
| CN114054665A (en) * | 2021-11-22 | 2022-02-18 | 中国航发哈尔滨轴承有限公司 | BG801 steel ball forging method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201933107U (en) * | 2010-12-15 | 2011-08-17 | 江苏太平洋精锻科技股份有限公司 | Isothermal annealing device utilizing tooth billet forging residual heat |
| CN102382967A (en) * | 2011-10-20 | 2012-03-21 | 江苏龙城精锻有限公司 | Waste heat annealing process for automobile generator claw pole |
| CN203782193U (en) * | 2014-04-26 | 2014-08-20 | 李玉波 | Waste heat energy-saving continuous annealing furnace of shaft forgings |
| CN104786021A (en) * | 2015-04-09 | 2015-07-22 | 无锡易通精密机械股份有限公司 | Bearing ring forging technology |
| CN105154654A (en) * | 2015-08-31 | 2015-12-16 | 安庆银亿轴承有限公司 | Annealing process of air conditioner bearing cover |
| CN106048155A (en) * | 2016-07-16 | 2016-10-26 | 柳州科尔特锻造机械有限公司 | Forging waste heat equal-temperature annealing process for low alloy steel |
| CN106282507A (en) * | 2016-08-24 | 2017-01-04 | 青岛天赢工业有限公司 | A kind of controlled heat-treatment furnace of cooling utilizing the remaining temperature of forging and heat treatment production method |
| CN108486468A (en) * | 2018-05-02 | 2018-09-04 | 本钢板材股份有限公司 | A kind of high-carbon low-alloy bearing steel ring and its heat-treatment technology method |
-
2018
- 2018-09-19 CN CN201811094307.7A patent/CN108823375A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201933107U (en) * | 2010-12-15 | 2011-08-17 | 江苏太平洋精锻科技股份有限公司 | Isothermal annealing device utilizing tooth billet forging residual heat |
| CN102382967A (en) * | 2011-10-20 | 2012-03-21 | 江苏龙城精锻有限公司 | Waste heat annealing process for automobile generator claw pole |
| CN203782193U (en) * | 2014-04-26 | 2014-08-20 | 李玉波 | Waste heat energy-saving continuous annealing furnace of shaft forgings |
| CN104786021A (en) * | 2015-04-09 | 2015-07-22 | 无锡易通精密机械股份有限公司 | Bearing ring forging technology |
| CN105154654A (en) * | 2015-08-31 | 2015-12-16 | 安庆银亿轴承有限公司 | Annealing process of air conditioner bearing cover |
| CN106048155A (en) * | 2016-07-16 | 2016-10-26 | 柳州科尔特锻造机械有限公司 | Forging waste heat equal-temperature annealing process for low alloy steel |
| CN106282507A (en) * | 2016-08-24 | 2017-01-04 | 青岛天赢工业有限公司 | A kind of controlled heat-treatment furnace of cooling utilizing the remaining temperature of forging and heat treatment production method |
| CN108486468A (en) * | 2018-05-02 | 2018-09-04 | 本钢板材股份有限公司 | A kind of high-carbon low-alloy bearing steel ring and its heat-treatment technology method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762969A (en) * | 2019-03-27 | 2019-05-17 | 滁州兄弟科技有限公司 | A kind of annealing furnace having detection function |
| CN114054665A (en) * | 2021-11-22 | 2022-02-18 | 中国航发哈尔滨轴承有限公司 | BG801 steel ball forging method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107138660A (en) | A kind of high-carbon-chromium bearing steel warm-rolling loop forming method for realizing tissue nodularization | |
| CN102312172A (en) | B3R hot work die steel with high strength and toughness and resistance to tempering, and preparation process thereof | |
| CN102764838A (en) | Gear thermal precision forging machining process adopting carburizing steel 20CrMnTi as material | |
| CN101775478B (en) | Gear ring nitrogen protection continuous type normalizing process | |
| CN104878179B (en) | Production process of heat-resistant steel belt for power plant | |
| CN105969962A (en) | Control process of gear steel strip-shaped structure | |
| CN105414428A (en) | Forging technique for cake forgings | |
| CN105755224A (en) | Quick spheroidal annealing thermal treatment process for Cr12 extruded seamless steel tube | |
| CN104561504A (en) | Heat treatment method for one-piece casting hot-rolled strip supporting roller | |
| CN103406352A (en) | Heating and rolling method of Ni36 nickel base alloy plate | |
| CN108823375A (en) | A kind of bearing ring residual temperature annealing process | |
| CN104014703A (en) | Forging process for C12MoV twisting rollers | |
| CN110605353B (en) | Efficient short-flow precision forging and cogging process for titanium and titanium alloy ingots | |
| CN200946156Y (en) | Fast cooling device | |
| CN104789843A (en) | Method for preparation of vanadium nitrogen alloy by pusher kiln technique | |
| CN102728771A (en) | Method for forging nuclear island spindle | |
| CN107326313A (en) | A kind of heat treatment method of adjustment α β diphasic titanium alloy tissues | |
| CN103846634A (en) | Method for forging single-throw crank shaft | |
| CN101886163A (en) | Gear blank isothermal annealing process and isothermal annealing production line | |
| CN101914671B (en) | Steel ingot heating energy-saving method | |
| CN105483602B (en) | A kind of heating means for reducing heavy rail decarburized layer | |
| CN101255490A (en) | After-forging grain-refining strength-toughening treatment process of 1Mn18Cr18N steel guard ring for generating set | |
| CN106623712A (en) | Forming method of 40Cr15Mo2VN high-nitrogen stainless steel forged component | |
| CN103409775B (en) | A kind of method of electrolysis production aluminum titanium alloy | |
| CN107217132A (en) | The method for removing roller bottom type continuous spheroidizing annealing furnace inner product carbon |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181116 |