CN104404229A - Rolling bearing heat treatment technology - Google Patents
Rolling bearing heat treatment technology Download PDFInfo
- Publication number
- CN104404229A CN104404229A CN201410617019.0A CN201410617019A CN104404229A CN 104404229 A CN104404229 A CN 104404229A CN 201410617019 A CN201410617019 A CN 201410617019A CN 104404229 A CN104404229 A CN 104404229A
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- China
- Prior art keywords
- heat treatment
- rolling bearing
- annealing
- normalizing
- tempering
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention provides a rolling bearing heat treatment technology. The material of all parts of a rolling bearing adopts bearing steel. The heat treatment technology comprises the following two links: 1, heat pretreatment: (1) normalizing: carrying out heat insulation for 40-60min after a workpiece is diathermanous, and cooling in a wind cooling and water cooling combination mode; and (2) spheroidizing annealing: carrying out an isothermal spheroidizing annealing process at a spheroidizing heating temperature of 790DEG C, heating to 900-920DEG C before annealing, carrying out heat insulation for 40-60min, and normalizing, wherein the heat insulation time is determined according to the size of the workpiece, the uniformity of a heating furnace, a furnace charging method, a furnace charging amount and the original structure uniformity before annealing; and 2, final heat treatment: carrying out quenching and low temperature tempering. The rolling bearing heat treatment technology has the advantages of high product quality, simple process and low cost.
Description
Technical field
The present invention relates to a kind of rolling bearing thermal treatment process, belong to machinery manufacturing technology field.
Background technology
Rolling bearing improves for the railway, rolling mill bearing etc. that bear heavy shock loads work-ing life, when using after M quenching, main failure forms is: inner sleeve cracking during assembling, being hit in use procedure, outer ring flange falls block, inner ring is cracked, and isothermal quenching bearing is because impelling strength is good, bearing stress, inner sleeve cracking when no matter assembling, or overcoat rib falls block, inner sleeve fracture prone reduces greatly in use procedure, and the rim stress that can reduce roller is concentrated.Bearing should have the characteristics such as long lifetime, high precision, high rigidity, low noise, high-wearing feature.At construction machinery industry, as mechanical means such as fork truck, stacker and excavators, also require to withstand shocks load.The progressive formation of hardness makes bearing have surge capability when being hit.How further can ensure that the hardness of rolling bearing, toughness and life-span are the problem that the application will study.
Summary of the invention
The invention provides a kind of rolling bearing thermal treatment process, the hardness of rolling bearing, toughness and longer life-span can be ensured.
For solving above technical problem, the invention provides following technical scheme: a kind of thermal treatment process of rolling bearing, each component materials of described rolling bearing adopts bearing steel, and its thermal treatment process comprises heat treatment in advance and finished heat treatment two links; The first, heat treatment in advance: (1) normalizing: the diathermanous rear insulation 40 ~ 60min of workpiece, cooling adopts combination that is air-cooled and water-cooled, is Spheroidizing Annealing after normalizing; (2) Spheroidizing Annealing: adopt isothermal spheroidizing technique, nodularization Heating temperature is 790 DEG C, needs to be heated to 900 ~ 920 DEG C before annealing, normalizing after insulation 40m-1h; Soaking time is fixed with the original structure homogeneity before the homogeneity of workpiece size, process furnace, shove charge method and batch, annealing; The second, finished heat treatment: adopt quenching and low-temperaturetempering, wherein quenching adopts oil quenchinng, and the temperature of low-temperaturetempering is 160 DEG C ± 10 DEG C, and tempering time is generally 2-4h; Should carry out-60-80 DEG C of deepfreeze after quenching, soaking time is 2-4h, and after deepfreeze, part returns to room temperature, in 4h, carry out tempering; Once supplement tempering again, tempering temperature is 120 ~ 160 DEG C, insulation 5 ~ 10h or more than 10h.
This rolling bearing thermal treatment process that the present invention relates to, quality product is high, and technique is simple, and cost is low.
Embodiment
A thermal treatment process for rolling bearing, each component materials of described rolling bearing adopts bearing steel, and its thermal treatment process comprises heat treatment in advance and finished heat treatment two links; The first, heat treatment in advance: (1) normalizing: the diathermanous rear insulation 40 ~ 60min of workpiece, cooling adopts combination that is air-cooled and water-cooled, is Spheroidizing Annealing after normalizing; (2) Spheroidizing Annealing: adopt isothermal spheroidizing technique, nodularization Heating temperature is 790 DEG C, needs to be heated to 900 ~ 920 DEG C before annealing, normalizing after insulation 40m-1h; Soaking time is fixed with the original structure homogeneity before the homogeneity of workpiece size, process furnace, shove charge method and batch, annealing; The second, finished heat treatment: adopt quenching and low-temperaturetempering, wherein quenching adopts oil quenchinng, and the temperature of low-temperaturetempering is 160 DEG C ± 10 DEG C, and tempering time is generally 2-4h; Should carry out-60-80 DEG C of deepfreeze after quenching, soaking time is 2-4h, and after deepfreeze, part returns to room temperature, in 4h, carry out tempering; Once supplement tempering again, tempering temperature is 120 ~ 160 DEG C, insulation 5 ~ 10h or more than 10h.
Embodiment of the present invention does not form the restriction to the application's scope; within every spirit in the present invention's design and principle, any amendment that one of skill in the art can make, equivalent to replace and improvement etc. all should be included within protection scope of the present invention.
Claims (1)
1. a thermal treatment process for rolling bearing, is characterized in that: each component materials of described rolling bearing adopts bearing steel, and its thermal treatment process comprises heat treatment in advance and finished heat treatment two links; The first, heat treatment in advance: (1) normalizing: the diathermanous rear insulation 40 ~ 60min of workpiece, cooling adopts combination that is air-cooled and water-cooled, is Spheroidizing Annealing after normalizing; (2) Spheroidizing Annealing: adopt isothermal spheroidizing technique, nodularization Heating temperature is 790 DEG C, needs to be heated to 900 ~ 920 DEG C before annealing, normalizing after insulation 40m-1h; Soaking time is fixed with the original structure homogeneity before the homogeneity of workpiece size, process furnace, shove charge method and batch, annealing; The second, finished heat treatment: adopt quenching and low-temperaturetempering, wherein quenching adopts oil quenchinng, and the temperature of low-temperaturetempering is 160 DEG C ± 10 DEG C, and tempering time is generally 2-4h; Should carry out-60-80 DEG C of deepfreeze after quenching, soaking time is 2-4h, and after deepfreeze, part returns to room temperature, in 4h, carry out tempering; Once supplement tempering again, tempering temperature is 120 ~ 160 DEG C, insulation 5 ~ 10h or more than 10h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617019.0A CN104404229A (en) | 2014-11-06 | 2014-11-06 | Rolling bearing heat treatment technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617019.0A CN104404229A (en) | 2014-11-06 | 2014-11-06 | Rolling bearing heat treatment technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104404229A true CN104404229A (en) | 2015-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410617019.0A Pending CN104404229A (en) | 2014-11-06 | 2014-11-06 | Rolling bearing heat treatment technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104404229A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555132A (en) * | 2016-12-02 | 2017-04-05 | 机械科学研究总院青岛分院 | A kind of high-carbon-chromium bearing steel Technology for Heating Processing |
| CN106555130A (en) * | 2016-12-02 | 2017-04-05 | 机械科学研究总院青岛分院 | A kind of heat- treated steel alloy |
| CN106834653A (en) * | 2017-02-23 | 2017-06-13 | 武汉理工大学 | A kind of bearing ring forging tissue fast spheroidizing annealing method based on controll cooling after forging |
| WO2018103088A1 (en) * | 2016-12-09 | 2018-06-14 | 孙振田 | Bearing steel heat treatment process |
| CN112756919A (en) * | 2020-12-31 | 2021-05-07 | 沈阳鼓风机集团齿轮压缩机有限公司 | Machining method of compressor ball bearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3895661B2 (en) * | 2002-10-24 | 2007-03-22 | 株式会社ジェイテクト | Manufacturing method of rolling sliding member |
| CN102534134A (en) * | 2012-01-06 | 2012-07-04 | 莱芜钢铁集团有限公司 | Bainite isothermal quenching thermal treatment process method for medium-carbon bearing steel |
| JP2014025097A (en) * | 2012-07-25 | 2014-02-06 | Ntn Corp | Method for manufacturing bearing ring, bearing ring and rolling bearing |
| CN104099454A (en) * | 2014-07-28 | 2014-10-15 | 新昌县南明街道锦泰机械厂 | Heat treatment process of novel bearing steel |
-
2014
- 2014-11-06 CN CN201410617019.0A patent/CN104404229A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3895661B2 (en) * | 2002-10-24 | 2007-03-22 | 株式会社ジェイテクト | Manufacturing method of rolling sliding member |
| CN102534134A (en) * | 2012-01-06 | 2012-07-04 | 莱芜钢铁集团有限公司 | Bainite isothermal quenching thermal treatment process method for medium-carbon bearing steel |
| JP2014025097A (en) * | 2012-07-25 | 2014-02-06 | Ntn Corp | Method for manufacturing bearing ring, bearing ring and rolling bearing |
| CN104099454A (en) * | 2014-07-28 | 2014-10-15 | 新昌县南明街道锦泰机械厂 | Heat treatment process of novel bearing steel |
Non-Patent Citations (1)
| Title |
|---|
| 互联网: "轴承钢热处理的工艺流程", 《网址来源：HTTP://CHINA.HUISOU.COM/NEWS/2012_09_24/125079_0/》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555132A (en) * | 2016-12-02 | 2017-04-05 | 机械科学研究总院青岛分院 | A kind of high-carbon-chromium bearing steel Technology for Heating Processing |
| CN106555130A (en) * | 2016-12-02 | 2017-04-05 | 机械科学研究总院青岛分院 | A kind of heat- treated steel alloy |
| CN106555132B (en) * | 2016-12-02 | 2017-11-24 | 机械科学研究总院青岛分院 | A kind of high-carbon-chromium bearing steel Technology for Heating Processing |
| CN106555130B (en) * | 2016-12-02 | 2018-02-23 | 机械科学研究总院青岛分院有限公司 | A kind of heat- treated steel alloy |
| WO2018103088A1 (en) * | 2016-12-09 | 2018-06-14 | 孙振田 | Bearing steel heat treatment process |
| CN106834653A (en) * | 2017-02-23 | 2017-06-13 | 武汉理工大学 | A kind of bearing ring forging tissue fast spheroidizing annealing method based on controll cooling after forging |
| CN106834653B (en) * | 2017-02-23 | 2018-03-16 | 武汉理工大学 | A kind of bearing ring forging tissue fast spheroidizing annealing method based on controll cooling after forging |
| CN112756919A (en) * | 2020-12-31 | 2021-05-07 | 沈阳鼓风机集团齿轮压缩机有限公司 | Machining method of compressor ball bearing |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |
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| RJ01 | Rejection of invention patent application after publication |