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随着航天技术的发展,对航天器用材的结构强度、耐热等性能提出了更高的要求,这样对连接用的铆钉材料也提出了更高要求。制造长征系列火箭时,我们对现有的铆钉用铝合金材料进行了比较。LC3铝合金剪切强度较高,但铆接工艺性欠佳,资料介绍也不宜超过125℃使用;LY4铝合金是高强耐热合金,但所制铆钉必须在固溶处理后2～6小时内铆接,常温下也无条件阳极化处理;LY9铝合金施铆的条件更
With the development of aerospace technology, higher requirements are put forward on the structural strength, heat resistance and other properties of spacecraft materials, and thus higher requirements are also set for the rivets materials for connection. When manufacturing the Long March series of rockets, we compared existing aluminum alloy rivets. LC3 aluminum alloy high shear strength, but poor riveting technology, data should not be introduced more than 125 ℃ use; LY4 aluminum alloy is a high strength heat-resistant alloy, but the rivets must be riveted within 2 to 6 hours after solution treatment , Anodized at room temperature unconditionally; LY9 aluminum rivets more conditions