CN111536152A - 一种高温倾覆力矩混合陶瓷球轴承 - Google Patents

一种高温倾覆力矩混合陶瓷球轴承 Download PDF

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CN111536152A
CN111536152A CN202010496937.8A CN202010496937A CN111536152A CN 111536152 A CN111536152 A CN 111536152A CN 202010496937 A CN202010496937 A CN 202010496937A CN 111536152 A CN111536152 A CN 111536152A
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ball bearing
overturning moment
ceramic ball
temperature
temperature overturning
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冯小川
刘森
孙志强
刘璐
高春月
寇思源
熊夺
石东丹
刘新宇
路明
徐超
周大威
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AVIC Harbin Bearing Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/303—Parts of ball or roller bearings of hybrid bearings, e.g. rolling bearings with steel races and ceramic rolling elements
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    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
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    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
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    • F16C33/32—Balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
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    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/20—Thermal properties
    • F16C2202/22—Coefficient of expansion
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    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/60—Ferrous alloys, e.g. steel alloys
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    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/40—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal
    • F16C2206/58—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal based on ceramic nitrides
    • F16C2206/60—Silicon nitride (Si3N4)l
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    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
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    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16C2220/00—Shaping
    • F16C2220/60—Shaping by removing material, e.g. machining
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Abstract

一种高温倾覆力矩混合陶瓷球轴承，本发明涉及一种高温倾覆力矩混合陶瓷球轴承。本发明是为了解决现有轴承无法满足航空发动机的载荷要求、温度要求、低摩擦力矩及盐雾环境使用要求的问题。高温倾覆力矩混合陶瓷球轴承由内圈、外圈和滚动体组成；所述内圈和外圈的材质均为高氮不锈钢；所述滚动体为陶瓷球。本发明用于航空发动机转向机构上。

Description

一种高温倾覆力矩混合陶瓷球轴承
技术领域
本发明涉及一种高温倾覆力矩混合陶瓷球轴承。
背景技术
在航空发动机上对轴承的工作要求为：1.轴承安装在发动机转向机构上，受高温气体影响，使得轴承的工作温度可能达到300℃；在非工作时间，存放的最低温度可能达到-40℃；发动机在海洋性气候下存放或工作时，轴承需要防潮湿和盐雾。2.转向机构转变方向的工作时间仅数秒，要求轴承能够快速反应，即低启动摩擦力矩；轴承工作过程中，载荷条件非常恶劣，既要承受径向、轴向载荷，又要承受结构带来的倾覆力矩(轴承承受的最大轴向力9000N，径向力7000N，倾覆力矩4000N·m)，要求轴承具有承受重载和抗变形的能力。3.轴承为超轻系列，轴承外径达到700mm，轴承宽度仅22mm，要求轴承具有较高的动强度和静强度。由于轴承承载能力不足，无法满足径向、轴向及倾覆力矩联合载荷使用要求，耐高温能力不足，启动摩擦力矩偏大，使得航空发动机转向机构轴承无法实现其转角0～95°的功能需求。
发明内容
本发明是为了解决现有轴承无法满足航空发动机的载荷要求、温度要求、低摩擦力矩及盐雾环境使用要求的问题，提供了一种高温倾覆力矩混合陶瓷球轴承。
本发明一种高温倾覆力矩混合陶瓷球轴承由内圈、外圈和滚动体组成；所述内圈和外圈的材质均为高氮不锈钢；所述滚动体为陶瓷球。
本发明的优点：
本发明高温倾覆力矩混合陶瓷球轴承能够满足主机的载荷要求、温度要求、低摩擦力矩及盐雾环境使用要求，使得发动机转向机构能够实现其转角任务完成。
具体实施方式
具体实施方式一：本实施方式一种高温倾覆力矩混合陶瓷球轴承由内圈、外圈和滚动体组成；所述内圈和外圈的材质均为高氮不锈钢；所述滚动体为陶瓷球。
具体实施方式二：本实施方式与具体实施方式一不同的是：所述内圈和外圈的材质均为高氮钢40Cr15Mo2VN。其它与具体实施方式一相同。
本实施方式选用高氮钢40Cr15Mo2VN作为内圈和外圈，使得轴承在高温下依然具有稳定的硬度、强度、良好的抗磨性和较高的断裂韧性。其抗磨料磨损性能优于Cronidur30，其磨损量和摩擦系数均小于Cronidur30。
具体实施方式三：本实施方式与具体实施方式一或二不同的是：所述滚动体为氮化硅陶瓷球。其它与具体实施方式一或二相同。
本实施方式选用氮化硅陶瓷球作为滚动体，相比普通轴承钢材，密度为钢材的40％、承载能力高、耐热性好(800℃)、热膨胀系数为钢材的22％、摩擦温升为钢材的60％、摩擦损失为钢材的40％、耐久性为钢材的200％、耐腐蚀性好，在贫油润滑甚至干运转时，具有良好的适应性。
具体实施方式四：本实施方式与具体实施方式一至三之一不同的是：所述滚动体的直径根据轴承有效截面积大小，按轴承设计公式计算得到。其它与具体实施方式一至三之一相同。
具体实施方式五：本实施方式与具体实施方式一至四之一不同的是：所述高温倾覆力矩混合陶瓷球轴承采用满球结构。其它与具体实施方式一至四之一相同。
考虑轴承同时承受轴向、径向与倾覆力矩联合载荷，轴承采用满球结构。
具体实施方式六：本实施方式与具体实施方式一至五之一不同的是：所述高温倾覆力矩混合陶瓷球轴承的沟曲率系数为0.51～0.54。其它与具体实施方式一至五之一相同。
曲率取值变大，滚动体与套圈间的接触面积越小，二者之间的产生的摩擦越小，对减小启动摩擦力矩有利，但会导致滚动体与套圈的接触应力变大。
具体实施方式七：本实施方式与具体实施方式一至六之一不同的是：内圈的曲率系数为0.515。其它与具体实施方式一至六之一相同。
具体实施方式八：本实施方式与具体实施方式一至七之一不同的是：外圈的曲率系数为0.52。其它与具体实施方式一至七之一相同。
具体实施方式九：本实施方式与具体实施方式一至八之一不同的是：所述高温倾覆力矩混合陶瓷球轴承的径向游隙与轴向游隙均不大于0.3mm。其它与具体实施方式一至八之一相同。
具体实施方式十：本实施方式与具体实施方式一至九之一不同的是：所述高温倾覆力矩混合陶瓷球轴承安装在发动机转向机构上。其它与具体实施方式一至九之一相同。
通过以下实施例验证本发明的有益效果：
实施例一：高温倾覆力矩混合陶瓷球轴承的主要加工过程为：锻造→车加工成型→热处理→磨削加工→表面处理→组装合套；
高氮不锈钢锻造辗扩成型及退火工艺是研制的重要环节，需要对加热温度、保温时间及始锻温度和锻造时间进行严格控制，以防出现锻造裂纹；退火工艺需要对退火温度及保持时间进行约束。
外圈需要先车加工完成基本结构形状加工，然后进行热处理，热处理后进行硬钻孔、磨齿、稳定处理，然后进行套圈磨加工，包括磨端面、沟道等，磨削过程中两次回火稳定，以消除磨削应力。
内圈需要先车加工完成基本结构形状加工，然后进行热处理，热处理后进行硬钻孔，包括定位孔、安装孔，为减小变形，采用定位销紧固后配对加工，磨削过程中两次回火稳定，以消除磨削应力。
轴承无损装配，先对轴承零件进行沟道尺寸分选，按游隙要求进行合套，检测轴向游隙，定位销定位后采用螺栓紧固。
将所述高温倾覆力矩混合陶瓷球轴承装于转向机构进行测试，经过5次累计约1小时的实际验证，轴承可以实现转向机构的预定功能，产品的设计合理性通过验证。随后，轴承装于发动机转向机构进行了搭机考核，经过多轮慢车、全速等状态累计约5小时验证，轴承可以达到主机要求的使用工况。

Claims (10)

1.一种高温倾覆力矩混合陶瓷球轴承，其特征在于高温倾覆力矩混合陶瓷球轴承由内圈、外圈和滚动体组成；所述内圈和外圈的材质均为高氮不锈钢；所述滚动体为陶瓷球。
2.根据权利要求1所述的一种高温倾覆力矩混合陶瓷球轴承，其特征在于所述内圈和外圈的材质均为高氮钢40Cr15Mo2VN。
3.根据权利要求1所述的一种高温倾覆力矩混合陶瓷球轴承，其特征在于所述滚动体为氮化硅陶瓷球。
4.根据权利要求1所述的一种高温倾覆力矩混合陶瓷球轴承，其特征在于所述滚动体的直径根据轴承有效截面积大小，按轴承设计公式计算得到。
5.根据权利要求1所述的一种高温倾覆力矩混合陶瓷球轴承，其特征在于所述高温倾覆力矩混合陶瓷球轴承采用满球结构。
6.根据权利要求1所述的一种高温倾覆力矩混合陶瓷球轴承，其特征在于所述高温倾覆力矩混合陶瓷球轴承的沟曲率系数为0.51～0.54。
7.根据权利要求6所述的一种高温倾覆力矩混合陶瓷球轴承，其特征在于内圈的曲率系数为0.515。
8.根据权利要求6所述的一种高温倾覆力矩混合陶瓷球轴承，其特征在于外圈的曲率系数为0.52。
9.根据权利要求1所述的一种高温倾覆力矩混合陶瓷球轴承，其特征在于所述高温倾覆力矩混合陶瓷球轴承的径向游隙与轴向游隙均不大于0.3mm。
10.根据权利要求1所述的一种高温倾覆力矩混合陶瓷球轴承，其特征在于所述高温倾覆力矩混合陶瓷球轴承安装在发动机转向机构上。
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CN112628283A (zh) * 2020-12-29 2021-04-09 中国航发哈尔滨轴承有限公司 一种高温耐腐蚀杆端关节轴承

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