CN104726783A - Steel for wind power yaw and variable pitch bearing sleeve ring and preparation method thereof - Google Patents
Steel for wind power yaw and variable pitch bearing sleeve ring and preparation method thereof Download PDFInfo
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- CN104726783A CN104726783A CN201510066587.0A CN201510066587A CN104726783A CN 104726783 A CN104726783 A CN 104726783A CN 201510066587 A CN201510066587 A CN 201510066587A CN 104726783 A CN104726783 A CN 104726783A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 57
- 239000010959 steel Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000010791 quenching Methods 0.000 claims abstract description 6
- 230000000171 quenching effect Effects 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 235000019628 coolness Nutrition 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
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- Rolling Contact Bearings (AREA)
- Sliding-Contact Bearings (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to steel for a wind power yaw and variable pitch bearing sleeve ring. The steel comprises the following chemical components in percentage by weight: 0.37-0.42% of C, 0.50-0.80% of Mn, 0.20-0.30% of Mo, 1.30-1.70% of Ni, 0.70-1.00% of Cr, 0.20-0.50% of Si, 0.035-0.055% of acid soluble Al, 0.07-0.12% of V, less than or equal to 0.004% of N, less than or equal to 0.0008% of O, less than or equal to 0.00015% of H, less than or equal to 0.010% of S, less than or equal to 0.015% of P, and the balance of Fe and few impurities. A preparation method of the wind power yaw and variable pitch bearing sleeve ring comprises the following steps: thermally treating the processed wind power yaw and variable pitch bearing sleeve ring, heating to 860-890 DEG C at first, keeping the temperature for 3-5 h, oil quenching after austenitizing, then, heating to 580-630 DEG C, keeping the temperature for 3-5 h, and cooling to room temperature. The steel prepared by the invention has excellent hardenability; the hardenability of the steel is far higher than that of 40CrNiMo steel; and various mechanical properties completely achieve standards and use requirements of the steel for the high-power (5MW) wind power yaw and variable pitch bearing.
Description
Technical field the present invention relates to a kind of steel alloy and preparation method thereof.
Background technology wind energy, as the renewable green energy resource of one, is more and more subject to the favor of countries in the world.In recent years, countries in the world increase the exploitation dynamics to wind energy, accelerate research and development wind energy generating plant.For reducing cost of wind power generation, reduce the cost of wind power generating set to greatest extent, various countries improve constantly single-machine capacity, thus improve wind energy conversion efficiency, improve wind-power market competitive power.The wind power generating set of current realization production domesticization is mainly 3MW and following small power generator group, and the main dependence on import of key components and parts of 5MW and above high-power wind-driven generator group, wherein just comprises driftage, pitch variable bearings.For the blockade on new techniques of breaks through foreign in the production of high-power (5MW and more than) Wind turbines, a kind of middle carbon quenched and tempered steel with excellent through hardening performance of independent development seems particularly important.
Manufacture steel using 42CrMo steel as driftage, pitch variable bearings lasso is proposed in JB/T 10705-2007 rolling bearing, bearing of wind power generator, therefore small power (3MW and following) the Wind turbines driftage of domestic production, pitch variable bearings also generally adopt 42CrMo steel to be produce material, but single-machine capacity increases the increase that must cause bearing ring size, the 40CrNiMo steel that 42CrMo steel even has excellent hardening capacity cannot reach the performance index required by bearing steel, therefore researches and develops the act of new steel grade Cheng Bihang.
Patent announcement CN101935811A, name is called " a kind of high strength, low-temperature impact-resistant, the wind-powered electricity generation rotating bearing steel of weathering resistance and production technique thereof " Chinese invention patent, the moiety wt% of this steel is C:0.41 ~ 0.44%, Si:0.17 ~ 0.37%, Mn:0.60 ~ 0.80%, Cr:0.90 ~ 1.20%, Mo:0.20 ~ 0.30%, P :≤0.020%, S :≤0.015%, Al:0.015 ~ 0.045%, Cu :≤0.20%, , Sb :≤0.003%, Sn :≤0.002%, As :≤0.010%, B :≤0.010%, [O] :≤15ppm, [H]≤1.5ppm, [N]≤70ppm, remaining is Fe.The invention provides a kind of high strength, low-temperature impact-resistant wind power bearing steel, its-40 DEG C of ballistic works are greater than 27J, but it does not provide intensity rank.From this Steel Alloy composition, the hardening capacity of this steel should be close with 42CrMo steel, can only be used for the production of small power (3MW and following) wind power bearing.Patent announcement CN101230441B, name is called the Chinese invention patent of " wind electricity change paddle of low-temperature impact-resistant, yaw axis bearing ring 42CrMoVNb steel ", the component of this 42CrMoVNb steel and content are C:0.42 ~ 0.45, Si:0.15 ~ 0.30, Mn:0.60 ~ 0.90, Cr:0.90 ~ 1.20, Mo:0.15 ~ 0.30, Ni:0.35 ~ 0.60, V:0.08 ~ 0.15, Nb:0.03 ~ 0.06, Cu≤0.20, S :≤0.015, P :≤0.015, [O] :≤20ppm, [H] :≤2.0ppm, and all the other are Fe and normal impurity.The invention provides a kind of wind power yawing, pitch variable bearings steel, though with the addition of the microalloy elements such as V, Nb, but and its raising effect for steel hardenability not mentioned, and be only refining grain size, so still cannot separate resolution portion performance problem not up to standard when being applied to the heavy in section Production of bearing of large size.
Summary of the invention the object of the present invention is to provide the wind power yawing, pitch variable bearings lasso steel and preparation method thereof that a kind of technique is simple, have excellent hardening capacity.It is in medium carbon low alloy steel, with the addition of a small amount of V and Al alloying element, and controls at lower aq by the N in steel, utilizes the solid N effect of Al element, stoping VN to generate, making V be present in austenite with solid solution condition, for improving the hardening capacity of steel.
Technical scheme of the present invention is as follows:
The chemical composition mass percent (wt%) of wind power yawing of the present invention, pitch variable bearings lasso steel is: C0.37 ~ 0.42, Mn 0.50 ~ 0.80, Mo 0.20 ~ 0.30, Ni 1.30 ~ 1.70, Cr 0.70 ~ 1.00, Si 0.20 ~ 0.50, Al
acid-soluble0.035 ~ 0.055, V 0.07 ~ 0.12, N≤0.004, O≤0.0008, H≤0.00015, S≤0.010, P≤0.015, rest part is Fe and a small amount of impurity.
The preparation method of above-mentioned wind power yawing, pitch variable bearings lasso steel:
(1) converter smelting molten steel is adopted, by molten steel through conventional external refining and the degassed process of conventional vacuum, adopt GPF (General Protection False casting process to obtain the steel billet of pure few nitrogen, steel billet is carried out thermoplasticity processing, positive pry-rolling ring is processed into wind power yawing, pitch variable bearings lasso;
(2) above-mentioned bearing ring is heat-treated, be first heated to 860 ~ 890 DEG C of temperature 3-5h and carry out oil quenching process after austenitizing, and then be heated to 580 ~ 630 DEG C of temperature 3-5h oil coolings to room temperature.
The present invention compared with prior art tool has the following advantages:
1, have excellent hardening capacity, its hardening capacity is far above 40CrNiMo steel.(preferably there is there concrete correlation data?)
2, every mechanical property reaches standard and the service requirements of high-power (5MW) wind power yawing and pitch variable bearings steel completely.
Embodiment
Embodiment 1
Adopt converter smelting molten steel; by molten steel through conventional external refining and the degassed process of conventional vacuum; adopt GPF (General Protection False casting process to obtain the steel billet of pure few nitrogen, the chemical composition of steel is (wt%): C:0.39, Mn:0.69, Mo:0.22, Cr:0.89, Si:0.34, Al
acid-soluble: 0.039, N:0.0022, O:0.0007, H:0.00010, S:0.004, P:0.006, all the other are Fe and normal impurities; Above-mentioned steel billet is carried out thermoplasticity processing, positive pry-rolling ring is processed into 5MW level wind electricity pitch variable bearings lasso size; Heat-treat above-mentioned bearing ring, be heated to temperature 860 DEG C, insulation 4h carries out oil quenching after austenitizing, and then is heated to 630 DEG C, and after insulation 3h, oil cooling is to room temperature.Carry out measuring mechanical property to the sampling of wall thickness 12.5mm position, result is as table 1:
Table 1.
Embodiment 2
Adopt converter smelting molten steel; by molten steel through conventional external refining and the degassed process of conventional vacuum; adopt GPF (General Protection False casting process to obtain the steel billet of pure few nitrogen, the chemical composition of steel is (wt%): C:0.41, Mn:0.71, Mo:0.25, Cr:0.92, Si:0.40, Al
acid-soluble: 0.040, N:0.0030, O:0.0006, H:0.00012, S:0.004, P:0.008, all the other are Fe and normal impurities, above-mentioned steel billet is carried out thermoplasticity processing, positive pry-rolling ring is processed into 5MW level wind power yawing bearing ring size; Heat-treat above-mentioned bearing ring, be heated to temperature 875 DEG C, insulation 5h carries out oil quenching after austenitizing, and then is heated to 600 DEG C, and after insulation 5h, oil cooling is to room temperature.Carry out measuring mechanical property to the sampling of wall thickness 12.5mm position, result is as shown in table 2:
Table 2.
Embodiment 3
Adopt converter smelting molten steel; by molten steel through conventional external refining and the degassed process of conventional vacuum; adopt GPF (General Protection False casting process to obtain the steel billet of pure few nitrogen, the chemical composition of steel is (wt%): C:0.38, Mn:0.65, Mo:0.30, Cr:0.88, Si:0.35, Al
acid-soluble: 0.036, N:0.0028, O:0.0007, H:0.00013, S:0.005, P:0.009, all the other are Fe and normal impurities, above-mentioned steel billet is carried out thermoplasticity processing, positive pry-rolling ring is processed into 5MW level wind power yawing bearing ring size; Heat-treat above-mentioned bearing ring, be heated to temperature 890 DEG C, insulation 3h carries out oil quenching after austenitizing, and then is heated to 580 DEG C, and after insulation 4h, oil cooling is to room temperature.Carry out measuring mechanical property to the sampling of wall thickness 12.5mm position, result is as shown in table 3:
Table 3.
Claims (2)
1. wind power yawing, a pitch variable bearings lasso steel, is characterized in that: its chemical composition mass percent wt% is: C 0.37 ~ 0.42, Mn 0.50 ~ 0.80, Mo 0.20 ~ 0.30, Ni 1.30 ~ 1.70, Cr0.70 ~ 1.00, Si 0.20 ~ 0.50, Al
acid-soluble0.035 ~ 0.055, V 0.07 ~ 0.12, N≤0.004, O≤0.0008, H≤0.00015, S≤0.010, P≤0.015, rest part is Fe and a small amount of impurity.
2. the preparation method of wind power yawing according to claim 1, pitch variable bearings lasso steel, is characterized in that:
(1) converter smelting molten steel is adopted, by molten steel through conventional external refining and the degassed process of conventional vacuum, adopt GPF (General Protection False casting process to obtain the steel billet of pure few nitrogen, steel billet is carried out thermoplasticity processing, positive pry-rolling ring is processed into wind power yawing, pitch variable bearings lasso;
(2) above-mentioned bearing ring is heat-treated, be first heated to 860 ~ 890 DEG C of temperature 3-5h and carry out oil quenching process after austenitizing, and then be heated to 580 ~ 630 DEG C of temperature 3-5h oil coolings to room temperature.
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| CN201510066587.0A CN104726783B (en) | 2015-02-09 | 2015-02-09 | A kind of wind power yawing, pitch variable bearings lasso steel and preparation method thereof |
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| CN201510066587.0A CN104726783B (en) | 2015-02-09 | 2015-02-09 | A kind of wind power yawing, pitch variable bearings lasso steel and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108504846A (en) * | 2018-04-02 | 2018-09-07 | 合肥市远大轴承锻造有限公司 | A kind of environmentally friendly heat treatment process of wind power bearing hood assembly |
| 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 |
| CN110079732A (en) * | 2019-05-15 | 2019-08-02 | 燕山大学 | Super harden ability steel and preparation method thereof |
| CN112048661A (en) * | 2020-07-16 | 2020-12-08 | 张家港市弘扬金属制品制造有限公司 | Steel for wind power yaw bearing ring and heat treatment method |
| CN112239833A (en) * | 2020-10-28 | 2021-01-19 | 蚌埠飞宇轴承有限公司 | Preparation method of wear-resistant bearing |
| CN112725683A (en) * | 2020-12-22 | 2021-04-30 | 南阳汉冶特钢有限公司 | Production method of low-cost large-thickness steel plate 40CrNiMo |
| CN112813363A (en) * | 2021-02-08 | 2021-05-18 | 洛阳Lyc轴承有限公司 | Bearing steel for wind power yaw and pitch bearing and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101230441B (en) * | 2008-02-21 | 2010-06-09 | 文宇 | Low-temperature impact resistant 42CrMoVNb steel for wind-power variable propeller and yaw bearing ring |
| CN101994062A (en) * | 2010-11-18 | 2011-03-30 | 成都天马铁路轴承有限公司 | Wind power bearing steel |
| CN101592131B (en) * | 2009-06-19 | 2012-05-16 | 张家港海陆环形锻件有限公司 | method for manufacturing ring forging of rotary support ring for wind power equipment |
| JP2013096448A (en) * | 2011-10-28 | 2013-05-20 | Nsk Ltd | Rolling bearing for wind power generation facility |
| CN104178695A (en) * | 2014-07-10 | 2014-12-03 | 燕山大学 | Medium-carbon-boron microalloyed steel for wind power bearing and preparation method thereof |
-
2015
- 2015-02-09 CN CN201510066587.0A patent/CN104726783B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101230441B (en) * | 2008-02-21 | 2010-06-09 | 文宇 | Low-temperature impact resistant 42CrMoVNb steel for wind-power variable propeller and yaw bearing ring |
| CN101592131B (en) * | 2009-06-19 | 2012-05-16 | 张家港海陆环形锻件有限公司 | method for manufacturing ring forging of rotary support ring for wind power equipment |
| CN101994062A (en) * | 2010-11-18 | 2011-03-30 | 成都天马铁路轴承有限公司 | Wind power bearing steel |
| JP2013096448A (en) * | 2011-10-28 | 2013-05-20 | Nsk Ltd | Rolling bearing for wind power generation facility |
| CN104178695A (en) * | 2014-07-10 | 2014-12-03 | 燕山大学 | Medium-carbon-boron microalloyed steel for wind power bearing and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 方军 等: "《中华人民共和国国家标准 合金结构钢 GB/T 3077-1999》", 1 November 1999 * |
| 江利 等: "《现代金属材料及应用》", 31 October 2009 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108504846A (en) * | 2018-04-02 | 2018-09-07 | 合肥市远大轴承锻造有限公司 | A kind of environmentally friendly heat treatment process of wind power bearing hood assembly |
| 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 |
| CN110079732A (en) * | 2019-05-15 | 2019-08-02 | 燕山大学 | Super harden ability steel and preparation method thereof |
| CN110079732B (en) * | 2019-05-15 | 2020-08-21 | 燕山大学 | Preparation method of super-hardenability steel |
| CN112048661A (en) * | 2020-07-16 | 2020-12-08 | 张家港市弘扬金属制品制造有限公司 | Steel for wind power yaw bearing ring and heat treatment method |
| CN112239833A (en) * | 2020-10-28 | 2021-01-19 | 蚌埠飞宇轴承有限公司 | Preparation method of wear-resistant bearing |
| CN112725683A (en) * | 2020-12-22 | 2021-04-30 | 南阳汉冶特钢有限公司 | Production method of low-cost large-thickness steel plate 40CrNiMo |
| CN112813363A (en) * | 2021-02-08 | 2021-05-18 | 洛阳Lyc轴承有限公司 | Bearing steel for wind power yaw and pitch bearing and preparation method thereof |
| CN112813363B (en) * | 2021-02-08 | 2022-04-08 | 洛阳Lyc轴承有限公司 | Bearing steel for wind power yaw and pitch bearing and preparation method thereof |
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