CN103740915A - Production process of 1552 alloy forge piece for wind power bearing - Google Patents
Production process of 1552 alloy forge piece for wind power bearing Download PDFInfo
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- CN103740915A CN103740915A CN201310518114.0A CN201310518114A CN103740915A CN 103740915 A CN103740915 A CN 103740915A CN 201310518114 A CN201310518114 A CN 201310518114A CN 103740915 A CN103740915 A CN 103740915A
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- 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
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Abstract
The invention relates to a production process of a 1552 alloy forge piece for a wind power bearing. The production process comprises the following steps: a, forging with the initial forging temperature of 1200 DEG C, the final forging temperature of 850 DEG C and the forging ratio of 3.5:1; b, carrying out heat treatment after forging: austenitizing the forge piece in the temperature range of 830-860 DEG C, and then carrying out air cooling; and c, carrying out performance heat treatment: rapidly heating up the forge piece to 830-840 DEG C with the heating-up speed of about 200 DEG C/h, carrying out heat preservation for 2.5-3 h, then carrying out rapid copious cooling, requiring to reduce the water temperature during cooling, requiring to circulate and stir cooling water, so as to ensure to cool to 40 DEG C or less as soon as possible, then tempering with the tempering temperature of 500-520 DEG C, and carrying out oil cooling after heat preservation for an appropriate time. The 1552 alloy forge piece used for the wind power bearing and produced by the production process completely meets strict requirements of poor wind field working conditions, and large changes of environmental temperature, humidity and loading, and has the characteristics of high reliability, long service life, low maintenance cost and the like.
Description
Technical field
The present invention relates to the production technique of a kind of wind power bearing with 1552 alloy forged pieces.
Background technology
Wind-powered electricity generation, as the clean renewable energy resources of one, is subject to the popular welcome of the each major country in the world.China is as wind power resources big country, under the external interdependency of the fossil energy dual-pressure that progressively soaring and Domestic Environment continues to worsen, in recent years aspect exploitation wind power resources, doing one's utmost, obtained proud achievement, simultaneously, drive large quantities of high speed developments with wind-powered electricity generation suite of equipment and supporting industry thereof, at wind-powered electricity generation complete machine and some matching component field, even occurred excess phenomenon.But some relate to the core component of wind-powered electricity generation equipment as still a large amount of dependence on import of wind power bearing however.
At present external wind power bearing adopts 42CrMo alloy material mostly, hold at high price, and domestic wind power bearing with steel also in the tackling key problem stage, exist the defects such as metal inside tissue looseness, tiny crack, coarse grains and mechanical property cannot meet standard-required.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of and can prepare the production technique that can meet the required performance index of wind power bearing and wind power bearing 1552 alloy forged pieces with low cost.
For addressing the above problem, the technical solution used in the present invention is: the production technique of 1552 alloy forged pieces for wind power bearing, comprises the steps:
A, forging: initial forging temperature is 1200 ℃, final forging temperature is 850 ℃, forging ratio is 3.5:1;
B, forging postheat treatment: in the temperature range of 830-860 ℃, forging is carried out to austenitizing, then air cooling;
C, property heat treatment: forging is rapidly heated to 830～840 ℃, heat-up rate is 200 ℃/h left and right, after insulation 2.5-3h, deep cooling, will reduce water temperature when cooling fast, and water coolant will circulate, stir, guarantee to be cooled to as quickly as possible below 40 ℃, then carry out tempering, tempering temperature is 500-520 ℃, oil cooling after insulation appropriate time.
The invention has the beneficial effects as follows: the prepared wind power bearing of above-mentioned production technique 1552 alloy forged pieces, as the upstream forging products of wind power bearing parts, 1552 alloy materials based on American Standard carry out design of material, by forging and the thermal treatment process of autonomous innovation, it is severe that product has met wind field operating mode completely, the harsh requirement that envrionment temperature, humidity and load change are huge, has that reliability is high, a feature such as long service life, maintenance cost are low.In following wind-power market, will occupy a tiny space, prospect is very bright.
Embodiment
Below by specific embodiment, wind power bearing of the present invention is described in further detail by the production technique of 1552 alloy forged pieces.
The production technique of 1552 alloy forged pieces for wind power bearing, comprises the steps:
A, forging: initial forging temperature is 1200 ℃, initial forging temperature exceed 1220 ℃ easily cause overheated, even burning.Final forging temperature is 850 ℃, and too low final forging temperature will cause the possibility of part cracking, and too high is also the reason that forms coarse grains.Forging ratio is 3.5:1, can guarantee like this to forge rear close structure, and can smash thick austenite crystal, and inclusion disperse distributes, and eliminates banded structure, alleviates anisotropy.When approaching final forging temperature, adopt the fast forging process of forging of tip-tap, can make crystal grain more tiny, to improving mechanical property, lay the foundation.
B, forging postheat treatment: in the temperature range of 830-860 ℃, forging is carried out to austenitizing, then air cooling;
C, property heat treatment: forging is rapidly heated to 830～840 ℃, and object improves nucleation rate, reduces coarsening rate, heat-up rate is 200 ℃/h left and right, after insulation 2.5-3h, and deep cooling fast, when cooling, to reduce water temperature, water coolant will circulate, stir, and guarantees to be cooled to as quickly as possible below 40 ℃, and these are all to improve depth of hardening zone, improve the effective ways of mechanical property, then carry out tempering, tempering temperature is 500-520 ℃, oil cooling after insulation appropriate time.Can obtain like this tempered sorbite metallographic structure, make product there is high intensity, good low-temperature flexibility and good hardening capacity and the anti-performance such as overheated.
The invention has the beneficial effects as follows: the prepared wind power bearing of above-mentioned production technique 1552 alloy forged pieces, as the upstream forging products of wind power bearing parts, 1552 alloy materials based on American Standard carry out design of material, by forging and the thermal treatment process of autonomous innovation, it is severe that product has met wind field operating mode completely, the harsh requirement that envrionment temperature, humidity and load change are huge, has that reliability is high, a feature such as long service life, maintenance cost are low.In following wind-power market, will occupy a tiny space, prospect is very bright.
The above embodiments are principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not for limiting the present invention; It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (1)
1. the production technique of 1552 alloy forged pieces for wind power bearing, is characterized in that: comprise the steps:
A, forging: initial forging temperature is 1200 ℃, final forging temperature is 850 ℃, forging ratio is 3.5:1;
B, forging postheat treatment: in the temperature range of 830-860 ℃, forging is carried out to austenitizing, then air cooling;
C, property heat treatment: forging is rapidly heated to 830～840 ℃, heat-up rate is 200 ℃/h left and right, after insulation 2.5-3h, deep cooling, will reduce water temperature when cooling fast, and water coolant will circulate, stir, guarantee to be cooled to as quickly as possible below 40 ℃, then carry out tempering, tempering temperature is 500-520 ℃, oil cooling after insulation appropriate time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310518114.0A CN103740915A (en) | 2013-10-28 | 2013-10-28 | Production process of 1552 alloy forge piece for wind power bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310518114.0A CN103740915A (en) | 2013-10-28 | 2013-10-28 | Production process of 1552 alloy forge piece for wind power bearing |
Publications (1)
| Publication Number | Publication Date |
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| CN103740915A true CN103740915A (en) | 2014-04-23 |
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| CN201310518114.0A Pending CN103740915A (en) | 2013-10-28 | 2013-10-28 | Production process of 1552 alloy forge piece for wind power bearing |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153376A (en) * | 2006-09-26 | 2008-04-02 | 宝山钢铁股份有限公司 | Method for manufacturing high-vanadium, high-cobalt high speed steel |
| CN101764334A (en) * | 2010-01-12 | 2010-06-30 | 上海昌强电站配件有限公司 | Die forging method of collector ring fan |
| CN102756071A (en) * | 2012-08-05 | 2012-10-31 | 贵州航天新力铸锻有限责任公司 | Forging method for AP1000 type nuclear power station reactor pressure vessel main bolt |
| CN102808136A (en) * | 2012-08-16 | 2012-12-05 | 河北五维航电科技有限公司 | Manufacturing method for filter net body material of ultra-supercritical turbine in megawatt unit |
-
2013
- 2013-10-28 CN CN201310518114.0A patent/CN103740915A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153376A (en) * | 2006-09-26 | 2008-04-02 | 宝山钢铁股份有限公司 | Method for manufacturing high-vanadium, high-cobalt high speed steel |
| CN101764334A (en) * | 2010-01-12 | 2010-06-30 | 上海昌强电站配件有限公司 | Die forging method of collector ring fan |
| CN102756071A (en) * | 2012-08-05 | 2012-10-31 | 贵州航天新力铸锻有限责任公司 | Forging method for AP1000 type nuclear power station reactor pressure vessel main bolt |
| CN102808136A (en) * | 2012-08-16 | 2012-12-05 | 河北五维航电科技有限公司 | Manufacturing method for filter net body material of ultra-supercritical turbine in megawatt unit |
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Application publication date: 20140423 |