| 摘要: |
| F150是一种高温下热塑性优于1Cr18Ni9Ti，适合于夹层结构钎焊，保证在深低温环境下结构件能稳定服役的材料。本文对1Cr18Ni9Ti与F150钎焊工艺进行了研究，通过工艺试验，确定了合适的钎焊工艺。试验结果表明：选用的钎料与母材形成了完整钎缝，钎缝组织均匀；钎焊接头抗拉强度达到了母材的90%以上；沟槽模拟件进行50MPa液压强度，无变形、无渗漏。应用钎焊工艺，实现了Φ2.5mm级别全尺寸喷管的钎焊工程应用，产品液压强度试验压力达到34MPa。 |
| 关键词: 钎焊 钎料 抗拉强度 微观组织 |
| 基金项目: |
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| Brazing Process and Application of 1Cr18Ni9Ti and F150 |
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Chen Zhikai Ren Xinche Yue Haijin Yang Haixin Zou Hefei Xu Kunhe Pang Weiqiang
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Capital Aerospace Machinery Co., Ltd., Beijing 100076
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| Abstract: |
| F150 is a kind of material with better thermoplastic than 1Cr18Ni9Ti at high temperature, which is suitable for brazing of sandwich structure and ensures the stable service of structural parts at liquid nitrogen temperature. In this paper, the brazing process of 1Cr18Ni9Ti and F150 was studied. Through the process test, the appropriate brazing process was determined. The test results showed that the selected brazing alloy formed a complete brazing joint with the base metal, and the microstructure of the brazing joint was uniform; the tensile strength of brazed joint reached more than 90% of the base metal; the groove simulator had a hydraulic strength of 50MPa without deformation and leakage. The brazing engineering application ofΦ2.5m full-size nozzle was realized by using the brazing process, and the hydraulic strength test pressure of the product reached 34MPa. |
| Key words: brazing brazing alloy tensile strength microstructure |
