CN110684891A - Induction quenching process for steel bearing part of high-carbon chromium bearing - Google Patents
Induction quenching process for steel bearing part of high-carbon chromium bearing Download PDFInfo
- Publication number
- CN110684891A CN110684891A CN201911071333.2A CN201911071333A CN110684891A CN 110684891 A CN110684891 A CN 110684891A CN 201911071333 A CN201911071333 A CN 201911071333A CN 110684891 A CN110684891 A CN 110684891A
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- CN
- China
- Prior art keywords
- carbon chromium
- bearing part
- temperature
- heating
- bearing steel
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Classifications
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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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- 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
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- 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
- C21D1/673—Quenching devices for die quenching
-
- 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
Abstract
The invention discloses an induction quenching process of a high-carbon chromium bearing steel bearing part, which relates to the field of bearing production and comprises the following steps: s1, placing the high-carbon chromium bearing steel bearing part into first heating equipment for preheating; s2, moving the high-carbon chromium bearing steel bearing part into second heating equipment for heating; s3, moving the high-carbon chromium bearing steel bearing part into third heating equipment for primary temperature equalization heating; s4, moving the high-carbon chromium bearing steel bearing part into fourth heating equipment for secondary temperature equalization heating; s5, moving the high-carbon chromium bearing steel bearing part into fifth heating equipment for third temperature equalization heating; s6, moving the high-carbon chromium bearing steel bearing part into sixth heating equipment for fourth temperature equalization heating; s7, transferring the blank into die quenching equipment for die quenching; and S8, cleaning, tempering and quality inspection. The bearing part processed by the invention has long service life and high dimensional precision.
Description
Technical Field
The invention relates to the field of bearing production and processing, and in particular relates to an induction quenching process for a high-carbon chromium bearing steel bearing part.
Background
At present, most of high-carbon chromium bearing steel is produced by a mesh belt furnace, a rod furnace and a multipurpose furnace, and many light, thin-wall bearings are produced by the above furnace types, but the high-carbon chromium bearing steel bearing ring produced by the existing method is suddenly heated and quenched in the quenching process, pearlite in the bearing ring cannot be fully converted into austenite, and the service life of the manufactured bearing ring is short; and the deformation of the steel bearing ring of the high-carbon chromium bearing produced by the method can not meet the technical requirements.
Disclosure of Invention
The invention aims to make up for the defects in the prior art, and provides an induction quenching process for a high-carbon chromium bearing steel bearing part, which improves the structure quality of the manufactured bearing part and reduces the deformation in quenching processing.
The technical scheme of the invention is as follows: an induction quenching process for a high-carbon chromium bearing steel bearing part is characterized by comprising the following steps of: the method comprises the following steps: s1, placing the high-carbon chromium bearing steel bearing part into first heating equipment for preheating until the temperature of the outer surface of the high-carbon chromium bearing steel bearing part reaches a first temperature value, wherein the range of the first temperature value is 760 plus 800 ℃; s2, moving the high-carbon chromium bearing steel bearing part into second heating equipment for heating until the temperature of the outer surface of the high-carbon chromium bearing steel bearing part reaches a second temperature value, wherein the range of the second temperature value is 820-; s3, moving the high-carbon chromium bearing steel bearing part into third heating equipment for first temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a third temperature value, wherein the range of the third temperature value is 820-; s4, moving the high-carbon chromium bearing steel bearing part into fourth heating equipment for second temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a fourth temperature value, wherein the range of the fourth temperature value is 820-; s5, moving the high-carbon chromium bearing steel bearing part into fifth heating equipment for third temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a fifth temperature value, wherein the range of the fifth temperature value is 820-; s6, moving the high-carbon chromium bearing steel bearing part into sixth heating equipment for fourth temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a sixth temperature value, wherein the range of the sixth temperature value is 820-; s7, transferring the high-carbon chromium bearing steel bearing part into a die-pressing quenching device for die-pressing quenching; and S8, cleaning, tempering and quality inspection are carried out on the quenched high-carbon chromium bearing steel bearing parts.
Furthermore, the first heating device, the second heating device, the third heating device, the fourth heating device, the fifth heating device and the sixth heating device are induction heating devices.
Further, the third temperature value, the fourth temperature value, the fifth temperature value and the sixth temperature value are sequentially increased.
Further, the third temperature value, the fourth temperature value, the fifth temperature value and the sixth temperature value are sequentially increased by 10 ℃.
Further, the high-carbon chromium bearing steel bearing part is a high-carbon chromium bearing steel bearing ring.
The invention has the beneficial effects that: the method comprises the steps of preheating a high-carbon chromium bearing steel bearing part by adopting first heating equipment, heating the high-carbon chromium bearing steel bearing part by adopting second heating equipment, uniformly heating the high-carbon chromium bearing steel bearing part by adopting third heating equipment for the first time, uniformly heating the high-carbon chromium bearing steel bearing part by adopting fourth heating equipment for the second time, uniformly heating the high-carbon chromium bearing steel bearing part by adopting fifth heating equipment for the third time, uniformly heating the high-carbon chromium bearing steel bearing part by adopting fifth heating equipment for the fourth time, and uniformly heating the high-carbon chromium bearing steel bearing part by adopting sixth heating equipment for the fourth time, wherein the temperature of each heating step is adjusted by setting the power of different heating equipment, so that the heating rate and the uniform temperature rate of the bearing part are reasonable, when the bearing part is converted from pearlite to austenite, the conversion rate is moderate, the temperature of the surface and core tissues are uniform, carbides are fully fused into austenite, the carbon content of the austenite is, the structure is more refined, and the service life is prolonged; in addition, the press die quenching equipment is adopted to carry out press die quenching on the bearing part, the deformation of quenching processing of the bearing part is small, and the size precision of the quenched bearing part is high.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the present invention will be briefly introduced below, and it is apparent that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a flow chart of the induction quenching process of the high-carbon chromium bearing steel bearing part of the invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
As shown in fig. 1, an induction quenching process for a high-carbon chromium bearing steel bearing part comprises the following steps: s1, placing the high-carbon chromium bearing steel bearing part into first heating equipment for preheating until the temperature of the outer surface of the high-carbon chromium bearing steel bearing part reaches a first temperature value, wherein the range of the first temperature value is 760 plus 800 ℃; s2, moving the high-carbon chromium bearing steel bearing part into second heating equipment for heating until the temperature of the outer surface of the high-carbon chromium bearing steel bearing part reaches a second temperature value, wherein the range of the second temperature value is 820-; s3, moving the high-carbon chromium bearing steel bearing part into third heating equipment for first temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a third temperature value, wherein the range of the third temperature value is 820-; s4, moving the high-carbon chromium bearing steel bearing part into fourth heating equipment for second temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a fourth temperature value, wherein the range of the fourth temperature value is 820-; s5, moving the high-carbon chromium bearing steel bearing part into fifth heating equipment for third temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a fifth temperature value, wherein the range of the fifth temperature value is 820-; s6, moving the high-carbon chromium bearing steel bearing part into sixth heating equipment for fourth temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a sixth temperature value, wherein the range of the sixth temperature value is 820-; s7, transferring the high-carbon chromium bearing steel bearing part into a die-pressing quenching device for die-pressing quenching; and S8, cleaning, tempering and quality inspection are carried out on the quenched high-carbon chromium bearing steel bearing parts.
The invention adopts a first heating device to preheat a high-carbon chromium bearing steel bearing part, a second heating device to heat the high-carbon chromium bearing steel bearing part, a third heating device to heat the high-carbon chromium bearing steel bearing part at a first uniform temperature, a fourth heating device to heat the high-carbon chromium bearing steel bearing part at a second uniform temperature, a fifth heating device to heat the high-carbon chromium bearing steel bearing part at a third uniform temperature and a sixth heating device to heat the high-carbon chromium bearing steel bearing part at a fourth uniform temperature, the temperature of each heating step is adjusted by setting the power of different heating devices, the heating rate and the uniform temperature rate of the bearing part are reasonable, when the bearing part is transformed from pearlite to austenite, the transformation rate is moderate, the temperature of the surface and the core tissues is uniform, carbide is fully fused into austenite, the carbon content of the austenite is increased, when quenching is carried out, the tissues are transformed more fully, the structure is more refined, and the service life is prolonged; in addition, the press die quenching equipment is adopted to carry out press die quenching on the bearing part, the deformation of quenching processing of the bearing part is small, and the size precision of the quenched bearing part is high.
Optionally, the first heating device, the second heating device, the third heating device, the fourth heating device, the fifth heating device and the sixth heating device are induction heating devices, and heating power and heating temperature are easy to control.
Preferably, the third temperature value, the fourth temperature value, the fifth temperature value and the sixth temperature value are increased in sequence. Further, the third temperature value, the fourth temperature value, the fifth temperature value and the sixth temperature value are sequentially increased by 10 ℃. The temperature setting can ensure that the pearlite to austenite structure of the bearing part is transformed more fully, the structure is more refined, and the service life of the processed bearing part is further prolonged.
Optionally, the high-carbon chromium bearing steel bearing part is a high-carbon chromium bearing steel bearing ring.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. An induction quenching process for a high-carbon chromium bearing steel bearing part is characterized by comprising the following steps of: the method comprises the following steps: s1, placing the high-carbon chromium bearing steel bearing part into first heating equipment for preheating until the temperature of the outer surface of the high-carbon chromium bearing steel bearing part reaches a first temperature value, wherein the range of the first temperature value is 760 plus 800 ℃; s2, moving the high-carbon chromium bearing steel bearing part into second heating equipment for heating until the temperature of the outer surface of the high-carbon chromium bearing steel bearing part reaches a second temperature value, wherein the range of the second temperature value is 820-; s3, moving the high-carbon chromium bearing steel bearing part into third heating equipment for first temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a third temperature value, wherein the range of the third temperature value is 820-; s4, moving the high-carbon chromium bearing steel bearing part into fourth heating equipment for second temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a fourth temperature value, wherein the range of the fourth temperature value is 820-; s5, moving the high-carbon chromium bearing steel bearing part into fifth heating equipment for third temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a fifth temperature value, wherein the range of the fifth temperature value is 820-; s6, moving the high-carbon chromium bearing steel bearing part into sixth heating equipment for fourth temperature equalization heating until the outer surface temperature and the core temperature of the high-carbon chromium bearing steel bearing part reach a sixth temperature value, wherein the range of the sixth temperature value is 820-; s7, transferring the high-carbon chromium bearing steel bearing part into a die-pressing quenching device for die-pressing quenching; and S8, cleaning, tempering and quality inspection are carried out on the quenched high-carbon chromium bearing steel bearing parts.
2. The induction hardening process of claim 1, wherein the first heating device, the second heating device, the third heating device, the fourth heating device, the fifth heating device, and the sixth heating device are induction heating devices.
3. The induction quenching process of claim 1, wherein the third, fourth, fifth, and sixth temperature values increase in sequence.
4. The induction quenching process of claim 3, wherein the third temperature value, the fourth temperature value, the fifth temperature value and the sixth temperature value are sequentially increased by 10 ℃.
5. The induction quenching process of any one of claims 1 to 4, wherein the high carbon chromium bearing steel bearing part is a high carbon chromium bearing steel bearing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071333.2A CN110684891A (en) | 2019-11-05 | 2019-11-05 | Induction quenching process for steel bearing part of high-carbon chromium bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071333.2A CN110684891A (en) | 2019-11-05 | 2019-11-05 | Induction quenching process for steel bearing part of high-carbon chromium bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110684891A true CN110684891A (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911071333.2A Pending CN110684891A (en) | 2019-11-05 | 2019-11-05 | Induction quenching process for steel bearing part of high-carbon chromium bearing |
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| CN (1) | CN110684891A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04191315A (en) * | 1990-11-22 | 1992-07-09 | Kubota Corp | Method for heat-treating composite material |
| US6203634B1 (en) * | 1998-10-28 | 2001-03-20 | Skf Gmbh | Method for heat-treating steel or cast iron components |
| CN102758073A (en) * | 2012-07-18 | 2012-10-31 | 浙江天马轴承股份有限公司 | Heat treatment method of bearing |
| CN104561461A (en) * | 2014-12-31 | 2015-04-29 | 人本集团有限公司 | Thermal treatment process of high carbon chromium bearing steel |
| CN105779716A (en) * | 2014-12-13 | 2016-07-20 | 重庆环德科技有限公司 | Heat treatment process for bearing steel |
| CN106048195A (en) * | 2016-08-23 | 2016-10-26 | 常州新区河海热处理工程有限公司 | Heat treatment technology for reducing deformation of GCr15 thin-wall conical ring |
| CN107400769A (en) * | 2017-07-25 | 2017-11-28 | 合肥欧仕嘉机电设备有限公司 | A kind of bearing steel heat treatment process |
| CN108165722A (en) * | 2017-12-29 | 2018-06-15 | 人本集团有限公司 | GCr15 bearing ring heat treatment process |
| CN108277451A (en) * | 2018-01-23 | 2018-07-13 | 合肥康之恒机械科技有限公司 | A kind of GCr15 profile shafts hold Heat-Treatment of Steel technique |
-
2019
- 2019-11-05 CN CN201911071333.2A patent/CN110684891A/en active Pending
Patent Citations (9)
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|---|---|---|---|---|
| JPH04191315A (en) * | 1990-11-22 | 1992-07-09 | Kubota Corp | Method for heat-treating composite material |
| US6203634B1 (en) * | 1998-10-28 | 2001-03-20 | Skf Gmbh | Method for heat-treating steel or cast iron components |
| CN102758073A (en) * | 2012-07-18 | 2012-10-31 | 浙江天马轴承股份有限公司 | Heat treatment method of bearing |
| CN105779716A (en) * | 2014-12-13 | 2016-07-20 | 重庆环德科技有限公司 | Heat treatment process for bearing steel |
| CN104561461A (en) * | 2014-12-31 | 2015-04-29 | 人本集团有限公司 | Thermal treatment process of high carbon chromium bearing steel |
| CN106048195A (en) * | 2016-08-23 | 2016-10-26 | 常州新区河海热处理工程有限公司 | Heat treatment technology for reducing deformation of GCr15 thin-wall conical ring |
| CN107400769A (en) * | 2017-07-25 | 2017-11-28 | 合肥欧仕嘉机电设备有限公司 | A kind of bearing steel heat treatment process |
| CN108165722A (en) * | 2017-12-29 | 2018-06-15 | 人本集团有限公司 | GCr15 bearing ring heat treatment process |
| CN108277451A (en) * | 2018-01-23 | 2018-07-13 | 合肥康之恒机械科技有限公司 | A kind of GCr15 profile shafts hold Heat-Treatment of Steel technique |
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Application publication date: 20200114 |
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