航天器环境工程
航天器環境工程
항천기배경공정
Spacecraft Environment Engineering
2015年
5期
549-553
,共5页
许贞龙%李玉忠%崔立军%陈金明
許貞龍%李玉忠%崔立軍%陳金明
허정룡%리옥충%최립군%진금명
空间环境模拟器%热沉%激光焊接%焊接工艺%不锈钢板
空間環境模擬器%熱沉%激光銲接%銲接工藝%不鏽鋼闆
공간배경모의기%열침%격광한접%한접공예%불수강판
space environment simulator%thermal shroud%laser welding%welding process%stainless steel plate
热沉是空间环境模拟器的重要组成部分之一,用于在真空热试验中产生冷黑环境.我国目前正在研制的KM8空间环境模拟器和KM7A空间环境模拟器的热沉均采用不锈钢板式结构,而不锈钢板式热沉的焊接加工工艺是亟需解决的技术问题.文章介绍了在KM8不锈钢板式热沉激光焊接工艺研究中,采用不同的工艺参数焊接了不同厚度的搭接组合板试件后,对这些试件进行了力学拉伸试验和焊缝分析与检测,并根据检测结果确定了不同厚度板材组合的最佳搭接焊接工艺参数.这些工艺参数在后续的生产实践得到了有效验证.
熱沉是空間環境模擬器的重要組成部分之一,用于在真空熱試驗中產生冷黑環境.我國目前正在研製的KM8空間環境模擬器和KM7A空間環境模擬器的熱沉均採用不鏽鋼闆式結構,而不鏽鋼闆式熱沉的銲接加工工藝是亟需解決的技術問題.文章介紹瞭在KM8不鏽鋼闆式熱沉激光銲接工藝研究中,採用不同的工藝參數銲接瞭不同厚度的搭接組閤闆試件後,對這些試件進行瞭力學拉伸試驗和銲縫分析與檢測,併根據檢測結果確定瞭不同厚度闆材組閤的最佳搭接銲接工藝參數.這些工藝參數在後續的生產實踐得到瞭有效驗證.
열침시공간배경모의기적중요조성부분지일,용우재진공열시험중산생랭흑배경.아국목전정재연제적KM8공간배경모의기화KM7A공간배경모의기적열침균채용불수강판식결구,이불수강판식열침적한접가공공예시극수해결적기술문제.문장개소료재KM8불수강판식열침격광한접공예연구중,채용불동적공예삼수한접료불동후도적탑접조합판시건후,대저사시건진행료역학랍신시험화한봉분석여검측,병근거검측결과학정료불동후도판재조합적최가탑접한접공예삼수.저사공예삼수재후속적생산실천득도료유효험증.
The thermal shroud is an important subsystem of the space environment simulator, mainly used to provide a cold and dark environmental for the spacecraft thermal balance and thermal vacuum tests. The thermal shroud of the KM8 space environment simulator used for the space station thermal test and the KM7A space environment simulator used for the satellite test are all in stainless steel plate-style structures. For the manufacture of the two large stainless steel thermal shrouds, the urgent need is to solve the bottleneck problem related with the processing of the stainless steel plate-style thermal shrouds. This paper analyzes the laser welding process for the KM8 thermal shroud. Welding specimens of different combinations of plate thickness with different welding parameters are made, and mechanical tensile tests, weld analysis and detections are carried out. The optimum welding parameters of the combination of different thickness plates are then determined. The manufacture practice shows that the welding parameters obtained in this study are adequate.