CN105349850B - 风力发电机叶片 - Google Patents

风力发电机叶片 Download PDF

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CN105349850B
CN105349850B CN201510748474.9A CN201510748474A CN105349850B CN 105349850 B CN105349850 B CN 105349850B CN 201510748474 A CN201510748474 A CN 201510748474A CN 105349850 B CN105349850 B CN 105349850B
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blade
wind
driven generator
finished product
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CN105349850A (zh
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褚景春
袁凌
潘磊
李强
王小虎
林明
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Guodian United Power Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/06Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08Alloys based on aluminium with magnesium as the next major constituent with silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Wind Motors (AREA)

Abstract

本发明涉及一种风力发电机叶片,通过对发电机叶片的组分、含量以及热处理方式进行改进,使得该风力发电机叶片的表面硬度、强度等性能得到大幅度提升,从而使得风力发电机的整体使用寿命得到大大提升。

Description

风力发电机叶片
技术领域
本发明属于风能的能源利用领域,特别是涉及一种风力发电机叶片。
背景技术
风力发电机的叶片目前主要使用玻璃钢、碳纤维材质制成,也有一部分寿命较低的采用钢或铝合金制成,玻璃钢、碳纤维材质的叶片强度较高、重量较轻、寿命较长,但是其成本是非常高的,尤其上述材料的专利权均被日本和美国所控制,购买费用高昂,钢的强度较高,但是重量较重,而铝合金重量较轻,但是强度比较低,因此如果发明一种强度较高韧性较好的铝合金叶片,则既保证了较低的成本,又重量较轻,同时又保证了强度和韧性。
发明内容
本发明的目的在于提出一种风力发电机叶片。
具体通过如下技术手段实现:
风力发电机叶片,
所述风力发电机叶片按质量百分比含量计为:Mg:1.2~3.6%,Si:0.6~1.2%,Cu:0.5~1.3%,V:0.2~0.35%,Ti:0.08~0.18%,Cr:0.3~0.8%,Mn:0.02~0.06%,Zr:0.1~0.22%,RE:0.09~0.16%,余量为Al和不可避免的杂质;
所述风力发电机叶片的抗拉强度为480~520MPa,延伸率为23~26%,;
所述风力发电机叶片的微观结构中,Al3Zr相均匀弥散分布,其截面面积百分比含量为6~12%,Al3Zr相平均等效直径为1~1.2μm,Al20Cu2Mn3相均匀分布在Al3Zr相周围。
作为优选,所述风力发电机叶片成型后采用如下的热处理步骤:
(1)将成型后的叶片半成品置于退火炉中,加热至505~530℃,保温5~10小时,然后出炉空冷;
(2)将步骤(1)处理之后的半成品置入到深冷箱中冷却到-80~-120℃,保持该温度15~20min,然后出深冷箱高压喷水恢复到室温,所述喷水的水温为20~30℃;
(3)将步骤(2)得到的半成品置入回火炉中加热至120~180℃,保温20~30min后,随炉冷却到室温,得到风力发电机叶片成品。
作为优选,所述风力发电机叶片的硬度为98~110N/mm2
本发明的效果在于:
1,通过对风力发电机叶片的成分进行改进,通过合理添加稀土RE,使得铝镁合金中晶粒得到大幅度细化,Al3Zr相和Al20Cu2Mn3相均匀弥散且晶粒细小,从而使得其强度得到大幅度提升,韧性得到提升,并且通过合理调配各个元素的含量,使得各相之间的配比达到了最为优化的效果。
2,通过对叶片的热处理制度进行改进,退火+深冷+回火处理,使得其微观结构中各相分布更加均匀弥散,从而使得强度和韧性得到提升。
3,在深冷处理后温度恢复的时候采用高压喷水的方式进行升温,从而使得表面温度急速上升,使得表面硬度得到大幅度提升。
具体实施方式
实施例1
风力发电机叶片按质量百分比含量计为:Mg:1.6%,Si:0.9%,Cu: 1.1%,V:0.28%,Ti:0.11%,Cr:0.52%,Mn:0.05%,Zr:0.16%,RE:0.12%,余量为Al和不可避免的杂质;
所述风力发电机叶片的抗拉强度为506MPa,延伸率为25%,硬度为108N/mm2。;
所述风力发电机叶片的微观结构中,Al3Zr相均匀弥散分布,其截面面积百分比含量为8%,Al3Zr相平均等效直径为1.1μm,Al20Cu2Mn3相均匀分布在Al3Zr相周围。
实施例2
实施例1风力发电机叶片成型后采用如下的热处理步骤:
(1)将成型后的叶片半成品置于退火炉中,加热至521℃,保温8小时,然后出炉空冷;
(2)将步骤(1)处理之后的半成品置入到深冷箱中冷却到-101℃,保持该温度18min,然后出深冷箱高压喷水恢复到室温,所述喷水的水温为28℃;
(3)将步骤(2)得到的半成品置入回火炉中加热至153℃,保温28min后,随炉冷却到室温,得到风力发电机叶片成品。

Claims (1)

1.风力发电机叶片,其特征在于,
所述风力发电机叶片按质量百分比含量计为:Mg:1.6~3.6%,Si:0.9~1.2%,Cu:0.5~1.1%,V:0.28~0.35%,Ti:0.11~0.18%,Cr:0.52~0.8%,Mn:0.05~0.06%,Zr:0.16~0.22%,RE:0.12~0.16%,余量为Al和不可避免的杂质;
所述风力发电机叶片的抗拉强度为506~520MPa,延伸率为25~26%;
所述风力发电机叶片的微观结构中,Al3Zr相均匀弥散分布,其截面面积百分比含量为8~12%,Al3Zr相平均等效直径为1~1.2μm,Al20Cu2Mn3相均匀分布在Al3Zr相周围;
所述风力发电机叶片成型后采用如下的热处理步骤:
(1)将成型后的叶片半成品置于退火炉中,加热至505~521℃,保温5~10小时,然后出炉空冷;
(2)将步骤(1)处理之后的半成品置入到深冷箱中冷却到-101~-120℃,保持该温度15~20min,然后出深冷箱高压喷水恢复到室温,所述喷水的水温为20~30℃;
(3)将步骤(2)得到的半成品置入回火炉中加热至120~180℃,保温20~30min后,随炉冷却到室温,得到风力发电机叶片成品;
所述风力发电机叶片的硬度为98~108N/mm2
CN201510748474.9A 2015-11-07 2015-11-07 风力发电机叶片 Active CN105349850B (zh)

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