离子液体镀铝工艺在纵向解锁机构弹簧上的应用研究  

Research on the Application of Aluminum Electroplating in the Springs of Longitudinal Unlocking Mechanism

作　　者：乐晨 张联英 郭嘉 宋启良 张毅博 王明杰 YUE Chen;ZHANG Lianying;GUO Jia;SONG Qiliang;ZHANG Yibo;WANG Mingjie(Beijing Institute of Aerospace Systems Engineering,Beijing 100076;Capital Aerospace Machinery Co.LTD,Beijing 100076)

机构地区：[1]北京宇航系统工程研究所,北京100076 [2]首都航天机械有限公司,北京100076

出　　处：《宇航材料工艺》2024年第2期112-118,共7页Aerospace Materials & Technology

摘　　要：纵向解锁机构是一套用于运载火箭整流罩两半罩连接与分离用的机构产品,其核心组件锁钩在验收和总装过程中需要重复多次解锁装配,弹簧是锁钩分离时使用的驱动元件。为提高弹簧可靠性,本文研究使用离子液体镀铝工艺替代含有氢脆隐患的电镀锌进行表面处理。首先通过典型产品试镀形成工艺方法,随后进行弹簧试制,最后开展热环境和锁钩机构试验验证弹簧可靠性。结果表明,离子液体镀铝工艺中的喷丸工艺会导致弹簧力值略微下降;这种状态的弹簧能够满足环境适应性要求,重复解锁会造成弹簧镀层磨损,力值下降约5%,但仍满足设计要求。弹簧使用离子镀铝工艺表面处理能够替代电镀锌,工艺实施过程中的喷丸后处理需要严格控制,重复使用时对弹簧镀层和力值的影响需要关注。The longitudinal unlocking mechanism was a set of mechanism products for connecting and separating the two halves of the launch vehicle fairing.Its core component,the locking hook,need to be unlocked and assembled repeatedly during acceptance and assembly.The spring was the driving element used for the sparation of the locking hook.In order to improve the reliability of springs,this paper studied the use of aluminum electroplating in ionic liquid to replace the electrogalvanizing with hydrogen embrittlement.The process method was first formed through the typical product trial plating,and then the spring trial production was carried out,and finally the heat environment and the hook lock mechanism test were used to verify the reliability of the springs.The results show that shot peening in the process will cause the spring force to decrease slightly,where as the spring in this state also can meet the environmental adaptability requirements.Repeated unlocking can cause the spring plating layer to wear,and the force will decrease by about 5%,but still meet the design requirements.Spring using aluminum electroplating in ionic liquid can replace electro-galvanizing.The post-treatment of shot peening in process implementation needs to be strictly controlled,and the effect of repeated use on spring coating and force value needs to be concerned.

关 键 词：离子液体镀铝 纵向解锁机构 弹簧 

分 类 号：TN249[电子电信—物理电子学]