CN1078265A - Steel ball heat treatment process - Google Patents
Steel ball heat treatment process Download PDFInfo
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- CN1078265A CN1078265A CN 92108118 CN92108118A CN1078265A CN 1078265 A CN1078265 A CN 1078265A CN 92108118 CN92108118 CN 92108118 CN 92108118 A CN92108118 A CN 92108118A CN 1078265 A CN1078265 A CN 1078265A
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- steel ball
- tempering
- temperature
- quenching
- treatment process
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Abstract
A kind of steel ball heat treatment process, be specially adapted to produce the ore grinding steel ball, it is characterized in that quenching temperature is 800～850 ℃, the steel ball surface temperature is 40～60 ℃ after the quench cooled, steel ball after the quenching in time carries out low-temperaturetempering, and tempering temperature is 150～210 ℃, and the time is 3 hours, tempering medium is 50～No. 100 machinery oil, and air cooling is to normal temperature after the tempering.This technology is easy to grasp and control, and steel ball average-volume hardness reaches 45～50HRC, and impelling strength reaches 12～15J/cm
2, improvement expenses is low, and the ratio of input and output is 1: 30～40, remarkable in economical benefits.
Description
Utilize common middle and high carbon steel base.Be heated to 1050～1150 ℃ of insulations and carry out die forging after 30 minutes.It is characterized in that: quenching temperature is 800～850 ℃, and the back steel ball surface temperature of quenching is 40～60 ℃, and the steel ball after the quenching in time carries out low-temperaturetempering.Tempering temperature is 150～210 ℃, and the time is 3 hours.Tempering medium is 50～No. 100 machinery oil, and air cooling is to normal temperature after the tempering.
The advantage of this thermal treatment process is:
1) steel billet C content allowed band is bigger, and it is lower to contain Mn, and material source extensively is easy to promote.
2) cool time long, cooling temperature is low, portion still can obtain a considerable amount of martensites at the steel ball heart.
3) the steel ball leaving water temperature(LWT) is easy to control and grasp after the quench cooled.
4) tempering temperature is stable, and steel ball performance inconsistency scope is little.
5) steel ball average-volume hardness (AVH) value is 45-50HRC, and notched bar impact strength is 12～15J/cm
2
6) improvement expenses is low, the duration is short, and the workman is easy to grasp, the economic benefit height, and the ratio of transforming the back input and output is 1: 30～40.
The present invention is achieved by the following measures:
The steel ball technological process of production is: steel billet selection → blanking → heating → die forging → precooling → quenching → tempering → air cooling.
Each operation specific requirement is as follows:
1) steel billet is selected: it is 0.5～0.8% that steel billet contains C; Siliceous 0.11～0.40%; Manganese 0.5～1.3%; Sulphur≤0.05%; Phosphorus≤0.06%.Use the mixing base to select through strictness.
2) blanking: adopt earnestly or cold saw.
3) heating: it is too short both to have prevented to heat the too fast time, prevents to heat slow overlong time again.Insulation is 30 minutes after reaching 1050～1150 ℃.
4) die forging: have certain density and garden degree for making steel ball, general requirement forges more than 50 times, and removes the iron scale in the mould at any time.
5) precooling: forge the back waste heat and be generally about 900 ℃, begin when making it be pre-chilled to 800～850 ℃ to quench, quenching temperature is crossed and lowly too highly all can be influenced ball hardness.
6) quench: quenching bath should have enough volumes, and water will long stream, is strictly on guard against that water temperature surpasses 60 ℃, in order to avoid influence quenching effect.Quenchant is a clear water, and forbidden that suds are arranged, foreign material such as grease sneak into.Should in time remove the iron scale of piling up in the pond.
7) tempering: in time removing quenching stress, prevent to burst, should in time carry out tempering.Tempering temperature is 150-210 ℃, and the time is 3 hours.Tempering medium is the 50-100 machinery oil, and air cooling is to normal temperature after the tempering.
Claims (1)
- A kind of steel ball heat treatment process, be specially adapted to produce the ore grinding steel ball, it is characterized in that, quenching temperature is 800～850 ℃, and the steel ball surface temperature is 40～60 ℃ after the quench cooled, and the steel ball after the quenching in time carries out low-temperaturetempering, tempering temperature is 150-210 ℃, time is 3 hours, and tempering medium is 50～No. 100 machinery oil, and air cooling is to normal temperature after the tempering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108118 CN1078265A (en) | 1992-04-27 | 1992-04-27 | Steel ball heat treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108118 CN1078265A (en) | 1992-04-27 | 1992-04-27 | Steel ball heat treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1078265A true CN1078265A (en) | 1993-11-10 |
Family
ID=4943241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92108118 Pending CN1078265A (en) | 1992-04-27 | 1992-04-27 | Steel ball heat treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1078265A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044389C (en) * | 1996-03-28 | 1999-07-28 | 刘机 | Steel ball making process |
| CN1063364C (en) * | 1994-08-16 | 2001-03-21 | 托比工业株式会社 | Method for producing a vehicular endless track link |
| CN100509209C (en) * | 2008-05-08 | 2009-07-08 | 刘机 | Steel-forged ball processing technique |
| CN101307799B (en) * | 2007-05-18 | 2010-09-29 | 上海钢球厂 | Blast engine steel ball |
| CN102848155A (en) * | 2012-09-24 | 2013-01-02 | 椿中岛机械(太仓)有限公司 | Production process of bearing steel balls of high speed spinner |
| CN104109810A (en) * | 2014-08-01 | 2014-10-22 | 宁国市南方耐磨材料有限公司 | High-C abrasion-resistant steel ball |
| CN107186447A (en) * | 2017-07-15 | 2017-09-22 | 芜湖市宇恒特种钢球有限公司 | A kind of processing method of bearing steel ball |
-
1992
- 1992-04-27 CN CN 92108118 patent/CN1078265A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063364C (en) * | 1994-08-16 | 2001-03-21 | 托比工业株式会社 | Method for producing a vehicular endless track link |
| CN1044389C (en) * | 1996-03-28 | 1999-07-28 | 刘机 | Steel ball making process |
| CN101307799B (en) * | 2007-05-18 | 2010-09-29 | 上海钢球厂 | Blast engine steel ball |
| CN100509209C (en) * | 2008-05-08 | 2009-07-08 | 刘机 | Steel-forged ball processing technique |
| CN102848155A (en) * | 2012-09-24 | 2013-01-02 | 椿中岛机械(太仓)有限公司 | Production process of bearing steel balls of high speed spinner |
| CN102848155B (en) * | 2012-09-24 | 2015-03-18 | 椿中岛机械(太仓)有限公司 | Production process of bearing steel balls of high speed spinner |
| CN104109810A (en) * | 2014-08-01 | 2014-10-22 | 宁国市南方耐磨材料有限公司 | High-C abrasion-resistant steel ball |
| CN107186447A (en) * | 2017-07-15 | 2017-09-22 | 芜湖市宇恒特种钢球有限公司 | A kind of processing method of bearing steel ball |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |