CN104004965A - Steel for wind power main shaft and heat treatment method thereof - Google Patents
Steel for wind power main shaft and heat treatment method thereof Download PDFInfo
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- CN104004965A CN104004965A CN201410246133.7A CN201410246133A CN104004965A CN 104004965 A CN104004965 A CN 104004965A CN 201410246133 A CN201410246133 A CN 201410246133A CN 104004965 A CN104004965 A CN 104004965A
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Abstract
The invention provides steel for a wind power main shaft and a heat treatment method thereof. The steel for the wind power main shaft is composed of the following chemical elements in mass percent: 0.3-0.38% of C, 0.53-0.75% of Mn, not more than 0.4% of Si, not more than 0.030% of P, 1.4-1.70% of Cr, 1.4-1.70% of Ni, 0.15-0.30% of Mo, not more than 0.25% of Cu, not more than 0.02ppm of H, and the balance of Fe and other unavoidable impurities; the heat treatment method of the steel for the wind power main shaft comprises the following steps: quenching for 14 hours at 860-880 DEG.C, and water-cooling for 80 min.
Description
Technical field
The present invention relates to metallurgical technology field, be specifically related to a kind of steel for wind power spindle and heat treating method.
Background technology
In recent years, along with the development of heavy industry industry, more and more higher to the requirement of forging performance, part heavy froging, progressively develops into the sampling of R/3 place by hardness requirement or epidermis sampling, even samples in centre.Wind power principal axis is an important component part in wind power plant, and main material is 42CrMo and 34CrNiMo6, and thermal treatment is used hardening and tempering process.The MW level wind power principal axis of external certain material 34CrNiMo6 of company, requires at flange center's power taking performance sample.Concrete technical requirements is as follows:
The said firm at home Finding Cooperative partner for many years, because alloying element proportioning is unreasonable and the various reasons such as heat treatment time control can not meet technical requirements.
Summary of the invention
First aspect of the present invention is to provide a kind of steel for wind power spindle, makes to meet the technical requirements of wind power principal axis.
A kind of steel for wind power spindle, its chemical element mass percent consists of: C 0.3～0.38%; Mn 0.53～0.75%; Si≤0.4%; P≤0.030%; Cr 1.4～1.70%; Ni 1.4～1.70%; Mo 0.15～0.30%; Cu≤0.25%; H≤0.02ppm; Surplus is Fe and other inevitable impurity, and the heat treating method of steel for wind power spindle comprises the following steps: quench: temperature 860-880 DEG C, the time is 14h, then water-cooled 80 minutes.
Preferably steel for wind power spindle, its chemical element mass percent consists of: C 0.34%; Mn 0.53%; Si 0.32%; P 0.006%; Cr 1.6%; Ni 1.57%; Mo 0.25%; Cu 0.05%; H 0.01ppm; Surplus is Fe and other inevitable impurity,
Second aspect of the present invention is to provide a kind of heat treating method of above-mentioned steel for wind power spindle, to address the deficiencies of the prior art, obtains the full phase constitution and the good mechanical property that need.
A heat treating method for described steel for wind power spindle, quenching temperature 860-880 DEG C, the time is 14h, then water-cooled 80 minutes.
Beneficial effect of the present invention:
Choose reasonable the content of the Cr of steel for wind power spindle, Ni alloying element, workpiece hardening capacity is increased, impel heart portion to be able to through hardening; Choose reasonable quenching temperature, make austenitizing more abundant; Choose reasonable quench water cool time, workpiece heart portion speed of cooling is accelerated, and makes core structure obtain lower bainite or martensite, has greatly improved the comprehensive mechanical property of wind power principal axis.
Brief description of the drawings
Fig. 1 is embodiment 1 Zhong great flange center coupon metallograph, and grain-size is less than 100um.
Fig. 2 is embodiment 1 Zhong great flange center coupon metallograph, and grain-size is less than 20um.
Embodiment
Below embodiments of the invention are elaborated, the present embodiment is implemented under taking technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
A kind of steel for wind power spindle, its chemical element mass percent consists of: C 0.34%; Mn 0.53%; Si 0.32%; P 0.006%; Cr 1.6%; Ni 1.57%; Mo 0.25%; Cu 0.05%; H 0.01ppm; Surplus is Fe and other inevitable impurity,
A heat treating method for described steel for wind power spindle, quenching temperature 860-880 DEG C, the time is 14h, then water-cooled 80 minutes.
A kind of wind power principal axis, adopts described steel for wind power spindle to be prepared from.
The mechanical properties test data of wind power principal axis are as shown in table 1.
Above-mentioned table 1 data show that mechanical property all meets the demands.
Large flange center coupon metallographic as shown in Figure 1, 2, is organized as average tempering sorbite, finds no F and separates out.
Embodiment 2
A kind of steel for wind power spindle, its chemical element mass percent consists of: C 0.3%; Mn 0.53%; Si 0.4%; P 0.030%; Cr 1.4 %; Ni 1.4 %; Mo 0.15 %; Cu 0.25%; H 0.02ppm; Surplus is Fe and other inevitable impurity, and the heat treating method of steel for wind power spindle comprises the following steps: quench: temperature 860-880 DEG C, the time is 14h, then water-cooled 80 minutes.
The mechanical properties test that adopts wind power principal axis prepared by above-mentioned steel for wind power spindle to carry out, shows that mechanical property all meets the demands.
Embodiment 3
A kind of steel for wind power spindle, its chemical element mass percent consists of: C 0.38%; Mn 0.75%; Si 0.25%; P 0.015%; Cr 1.70%; Ni 1.70%; Mo 0.30%; Cu 0.1%; H≤0.015ppm; Surplus is Fe and other inevitable impurity, and the heat treating method of steel for wind power spindle comprises the following steps: quench: temperature 860-880 DEG C, the time is 14h, then water-cooled 80 minutes.
The mechanical properties test that adopts wind power principal axis prepared by above-mentioned steel for wind power spindle to carry out, shows that mechanical property all meets the demands.
Claims (4)
1. a steel for wind power spindle, is characterized in that: its chemical element mass percent consists of: C 0.3～0.38%; Mn 0.53～0.75%; Si≤0.4%; P≤0.030%; Cr 1.4～1.70%; Ni 1.4～1.70%; Mo 0.15～0.30%; Cu≤0.25%; H≤0.02ppm; Surplus is Fe and other inevitable impurity, and the heat treating method of steel for wind power spindle comprises the following steps: quench: temperature 860-880 DEG C, the time is 14h, then water-cooled 80 minutes.
2. steel for wind power spindle according to claim 1, is characterized in that: its chemical element mass percent consists of: C 0.34%; Mn 0.53%; Si 0.32%; P 0.006%; Cr 1.6%; Ni 1.57%; Mo 0.25%; Cu 0.05%; H 0.01ppm; Surplus is Fe and other inevitable impurity.
3. a heat treating method for steel for wind power spindle described in claim 1 or 2, is characterized in that: quenching temperature 860-880 DEG C, the time is 14h, then water-cooled 80 minutes.
4. a wind power principal axis, is characterized in that: described in employing claim 1 or 2, steel for wind power spindle is prepared from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410246133.7A CN104004965A (en) | 2014-06-05 | 2014-06-05 | Steel for wind power main shaft and heat treatment method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410246133.7A CN104004965A (en) | 2014-06-05 | 2014-06-05 | Steel for wind power main shaft and heat treatment method thereof |
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| CN104004965A true CN104004965A (en) | 2014-08-27 |
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| CN201410246133.7A Pending CN104004965A (en) | 2014-06-05 | 2014-06-05 | Steel for wind power main shaft and heat treatment method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313288A (en) * | 2014-11-12 | 2015-01-28 | 通裕重工股份有限公司 | Heat treatment process for 42CrMo wind power spindle |
| CN109321835A (en) * | 2018-11-30 | 2019-02-12 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | High alloy element material and heat treatment optimization technique for wind-powered turntable bearing |
| CN111893260A (en) * | 2020-08-17 | 2020-11-06 | 通裕重工股份有限公司 | Heat treatment method for wind power main shaft |
Citations (5)
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| JPH0761489B2 (en) * | 1989-05-08 | 1995-07-05 | 日立金属株式会社 | Compound roll for rolling |
| CN101294261A (en) * | 2008-05-23 | 2008-10-29 | 江阴风电法兰制造有限公司 | Alloy constructional steel for large-scale wind power principal axis |
| CN102140610A (en) * | 2011-03-08 | 2011-08-03 | 上海海隆石油管材研究所 | Steel suitable for drill rod joint in low-temperature environment and heat treatment process of steel |
| CN102808133A (en) * | 2011-05-31 | 2012-12-05 | 新东工业株式会社 | Abrasion-resistant low alloy cast steel |
| CN103469092A (en) * | 2013-07-26 | 2013-12-25 | 中原特钢股份有限公司 | Production method for main shaft of fan by using 34CrNiMo6 steel as raw material |
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2014
- 2014-06-05 CN CN201410246133.7A patent/CN104004965A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0761489B2 (en) * | 1989-05-08 | 1995-07-05 | 日立金属株式会社 | Compound roll for rolling |
| CN101294261A (en) * | 2008-05-23 | 2008-10-29 | 江阴风电法兰制造有限公司 | Alloy constructional steel for large-scale wind power principal axis |
| CN102140610A (en) * | 2011-03-08 | 2011-08-03 | 上海海隆石油管材研究所 | Steel suitable for drill rod joint in low-temperature environment and heat treatment process of steel |
| CN102808133A (en) * | 2011-05-31 | 2012-12-05 | 新东工业株式会社 | Abrasion-resistant low alloy cast steel |
| CN103469092A (en) * | 2013-07-26 | 2013-12-25 | 中原特钢股份有限公司 | Production method for main shaft of fan by using 34CrNiMo6 steel as raw material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313288A (en) * | 2014-11-12 | 2015-01-28 | 通裕重工股份有限公司 | Heat treatment process for 42CrMo wind power spindle |
| CN109321835A (en) * | 2018-11-30 | 2019-02-12 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | High alloy element material and heat treatment optimization technique for wind-powered turntable bearing |
| CN111893260A (en) * | 2020-08-17 | 2020-11-06 | 通裕重工股份有限公司 | Heat treatment method for wind power main shaft |
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Application publication date: 20140827 |