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雷火电竞地址: 广州市番禺区沙湾镇西村细岗工业区5号
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螺钉装配及防松技术
浏览: 发布日期:2018-05-08


技术交流螺钉装配及防松技术bookmark0航天科工集团第三研究院第三十三研究所赵蕴懿李金萍程中占有很大的比重。装配过程中屡屡出现因抒紧力矩过大或过小出现螺纹紧固件或连接件失效的问题,为了提高螺钉连接的一致性和可靠性,首先通过雷火电竞方法计算确定不同规格螺钉的理论抒紧力矩值,并对防松方法进行了总结,其次通过振动试验验证螺钉抒紧力矩雷火电竞计算值是否正确、合理。最后,对螺钉抒紧力矩选取原则进行了归纳总结,以便工艺设计人员根据不同的使用环境选择。

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  表1螺钉常见性能等级的抗拉强度和屈服极限表2常见螺纹紧固1牛拧紧力矩雷火电竞计算结果螺钉标准国家标准航空行业标准性能等级/材料牌号螺纹规格螺栓拧紧力矩/N-m螺栓拧紧力矩/Nm 4螺纹紧固胶的选取方法螺钉紧固件防松较为常用的为使用螺纹紧固胶进行防松。其中环氧胶粘接力较大,在螺钉紧固中使用后一般不可拆卸,且环氧胶一般都为双组分,操作复杂。厌氧胶具有良好的耐振性、粘结力和密封性,防松功能强,厌氧胶为单组分胶,在空气中呈液态,隔绝空气后,发生聚合反应固化,而且使用厌氧胶可进行螺纹紧固件的重复拆卸,因此厌氧胶较为常用。

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