韩修柱,霍秀兵,周志勇,等.航天器结构用不同材质的侧面销钉和螺母组件的耐蚀性能研究[J].精密成形工程,2022,14(7):143-149.
HAN Xiu-zhu,HUO Xiu-bing,ZHOU Zhi-yong,et al.Corrosion-resistance of Side Screw and Nut Assembly in Spacecraft Structure of Different Materials[J].Journal of Netshape Forming Engineering,2022,14(7):143-149. |
| 航天器结构用不同材质的侧面销钉和螺母组件的耐蚀性能研究 |
| Corrosion-resistance of Side Screw and Nut Assembly in Spacecraft Structure of Different Materials |
| |
| DOI：10.3969/j.issn.1674-6457.2022.07.020 |
| 中文关键词: 销钉 螺母 防咬死 耐腐蚀 |
| 英文关键词: screw nut thread anti-bite performance corrosion-resistance |
| 基金项目:中国空间技术研究院“杰青”人才项目 |
|
| 摘要点击次数: 1966 |
| 全文下载次数: 888 |
| 中文摘要: |
| 目的 针对航天器结构用不同材质的侧面销钉和螺母组件在实际的使用工况下极易出现腐蚀与咬死的问题，对不同材质的侧面销钉和螺母组件的耐蚀性能进行研究。方法 分别在高量级腐蚀条件和低量级腐蚀条件下，采用重复拧紧试验方法，对侧面销钉和螺母开展耐腐蚀性能、防咬死性能研究。结果 在高量级腐蚀条件下，无表面处理的30CrMnSiA侧面销钉+TC4螺母组件在经历12 h腐蚀试验后，其表面发生了100%的腐蚀;经历过重复拧紧试验的30CrMnSiA(表面镀镍)侧面销钉+TC4螺母组件，在经历12 h腐蚀试验后，其表面腐蚀面积＞50%;未经历重复拧紧试验的30CrMnSiA(表面镀镍)侧面销钉+TC4螺母组件，在经历12 h腐蚀试验后，其腐蚀面积约为25%~50%。在低量级腐蚀条件下，经历重复拧紧试验和未经历重复拧紧试验的30CrMnSiA(表面镀镍)侧面销钉+TC4螺母组件均未发生表面腐蚀，而30CrMnSiA(无镀镍)侧面销钉+TC4螺母组件的腐蚀面积为25%~50%。镀镍处理可以显著提高30CrMnSiA侧面销钉的耐腐蚀性能。结论 经过镀镍表面处理的30CrMnSiA侧面销钉比经过表面钝化处理的1Cr17Ni2侧面销钉具有更好的耐蚀性能、防咬死性能和环境适应性。重复拧紧虽然对镀镍侧面销钉的耐腐蚀性能有影响，但重复拧紧后的侧面销钉和螺母组件的耐蚀性能仍优于无镀镍处理的侧面销钉和螺母组件。30CrMnSiA镀镍侧面销钉+ TC4螺母的组件通过了低量级实际工况的盐雾试验考核。 |
| 英文摘要: |
| The work aims to study the corrosion-resistance of side screw and nut assembly in spacecraft structure of different materials to solve the problem that the side screw and nut assembly in the spacecraft is prone to mutual bite and surface corrosion in the actual working conditions. Under high-level corrosion conditions and low-level corrosion conditions, the repeated tightening test was conducted to study the thread anti-bite performance and corrosion-resistance of side screws and nuts. Under the high-level corrosion conditions, the corrosion area of the 30CrMnSiA side screw and TC4 nut assembly without surface treatment was about 100% after 12 h of corrosion test. While, the corrosion area of the 30CrMnSiA side screw and TC4 nut assembly with nickel plating without and with repeated tightening were 25%~50% and >50%, respectively. Under the low-level corrosion conditions, the surface corrosion did not occur to 30CrMnSiA side screw and TC4 nut assembly with nickel plating with and without repeated tightening. Nevertheless, the corrosion area of the 30CrMnSiA side screw and TC4 nut assembly without nickel plating were 25%~50%. The corrosion-resistance of 30CrMnSiA side screw could be improved by nickel plating. The 30CrMnSiA side screw with nickel plating has better corrosion-resistance, thread anti-bite performance and environmental adaptability compared with that of the 1Cr17Ni2 with passivated surface. Although repeated tightening has an impact on the corrosion-resistance of the side screw with nickel plating, the side screw and nut assembly after repeated tightening still has better corrosion-resistance than the side screw and nut assembly without nickel plating. At last, the corrosion-resistance of the 30CrMnSiA side screw and TC4 nut assembly with nickel plating passes the salt spray test assessment under the low-level corrosion conditions of the spacecraft. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501719号