Vacuum Brazing Technology of Seal Ring Composed of Martensitic Stainless Steel and Aluminum Bronze

Suxia SHI; Mou ZUO; Xueli LIU; Chunrong YANG

doi:10.7512/j.issn.1001-2303.2022.01.13

Welding Technology | Views : 0 下载量: 11 CSCD: 0

PDF
Export
Share
Collection
Album

Vacuum Brazing Technology of Seal Ring Composed of Martensitic Stainless Steel and Aluminum Bronze
Vol. 52, Issue 1, Pages: 103-108(2022)
DOI： 10.7512/j.issn.1001-2303.2022.01.13

扫描看全文

石素霞，左谋，刘雪丽，等.马氏体不锈钢与铝青铜封严环真空钎焊工艺［J］.电焊机，2022，52（01）：103-108.

SHI Suxia, ZUO Mou, LIU Xueli, et al.Vacuum brazing technology of seal ring composed of martensitic stainless steel and aluminum bronze[J].Electric Welding Machine, 2022, 52(01): 103-108.
石素霞，左谋，刘雪丽，等.马氏体不锈钢与铝青铜封严环真空钎焊工艺［J］.电焊机，2022，52（01）：103-108. DOI： 10.7512/j.issn.1001-2303.2022.01.13.

SHI Suxia, ZUO Mou, LIU Xueli, et al.Vacuum brazing technology of seal ring composed of martensitic stainless steel and aluminum bronze[J].Electric Welding Machine, 2022, 52(01): 103-108. DOI： 10.7512/j.issn.1001-2303.2022.01.13.

摘要

某航空发动机封严环结构由1Cr17Ni2材质的安装边和QAl7材质的环通过真空钎焊连接在一起，按原工艺加工合格的零件装配发动机试车后，大部分零件在试车过程中出现铜环脱焊现象，严重制约了研制进度。采用模拟件改进封严环的真空钎焊工艺，选用HBAg72CuNiLi共晶钎料，在室温下将预留钎焊间隙调整为0.18~0.20 mm，通过安装边内圆、车削加工铜环外径来保证钎焊间隙，增加钎焊工装以防止钎焊过程中焊缝开裂。结果表明，获得的钎缝表面均匀、过渡圆滑、未见缺陷，符合质量要求。焊后采用水浸超声波检测代替X射线探伤检测焊缝，检测结果与金相检测结果一致。采用新工艺钎焊的零件通过了试车考核，解决了该零件钎焊焊缝开裂的难题。

Abstract

The sealing ring structure of an aero engine is connected by the mounting edge of material 1Cr17Ni2 and the ring of material QAL7 through vacuum brazing. After the aero engine test run, the qualified brazing seam processed by the original process appeared the phenomenon of brazing crack, which seriously restricted the development progress. In this paper, vacuum brazing technology of sealing ring is improved by using simulated parts, and HBAg72CuNiLi eutectic filler metal is used. The brazing gap is adjusted to 0.18~0.20 mm at room temperature, the brazing gap is ensured by turning the external diameter of bronze ring according to the size of the mounting edge, and the weld cracking during brazing is prevented from increasing the brazing equipment. The results show that the brazing seam has uniform surface, smooth transition and no defects, which meets the quality requirements. The water immersion ultrasonic testing is used instead of X-ray inspection to detect the brazing seam, and the detection results are consistent with the metallographic detection results. The parts brazed by the new technology pass the test run and the problem of cracking of brazing seam is solved.

关键词

封严环真空钎焊钎焊间隙水浸超声波检测

Keywords

seal ringvacuum brazingbrazing gapultrasonic testing in water immersion

references

徐念.燃烧室机匣真空钎焊技术研究［J］.金属加工（热加工），2014（6）：85-86.

XU N. Study on vacuum brazing Technology of combustor case［J］. Welding and Cutting， 2014（6）：85-86.

敖斌，王悦欣，罗运芬，等.某型机低压涡轮外环钎焊技术［J］.焊接，2015（5）：45-49，70.

AO B，WANG Y X，LUO Y F，et al. Brazing technology of low pressure turbine ring in an aeroengine ［J］. Welding & Joining， 2015（5）：45-46，70

林茂广，王海龙.奥氏体不锈钢与纯铜的真空钎焊工艺研究［J］.热加工工艺，2013，42（9）：176-178.

LIN M G，WANG H L. Study on Vacuum Brazing Process of Austenitic Stainless Steel and Copper［J］. Hot Working Technology，42（9）：176-178.

林发仙，王建荣，翟辉，等.白铜封严篦齿环真空钎焊工艺［J］.焊接，2016（3）：65-68.

Lin F X，Wang J R，Zhai H，et al. Vacuum brazing process of copper-nickel alloy labyrinth seal rings［J］.Welding and Joining，2016（3）：65-68.

中国航空材料手册编译委会.中国航空材料应用手册［M］.北京：中国标准出版社，2002.

Compilation Committee of Chinese Aeronautical Materials Manual .China Aeronautical Materials Application Manual［M］. Beijing：China Standard Press， 2002.

张学军. 航空钎焊技术［M］. 北京：航空工业出版社，2008.

ZHANG X J. Aeronautical Brazing Technology ［M］.Beijing： Aeronautical Manufacturing Press， 2008.

江宽，王宇，张腾，等. 核岛冷却系统铜-不锈钢真空钎焊焊接工艺设计和性能研究［J］.电焊机，2019，49（7）：31-35.

JIANG K，WANG Y，ZHANG T，et al. Welding procedure design and property study on vacuum brazing of copper-stainless steel in nuclear island cooling system［J］. Electric Welding Machine， 2019， 49（7）：31-35.

刘新强，郑欣，李佳，等.扩压器真空钎焊工艺［J］.航空制造技术，2015（5）：93-94.

LIU X Q，ZHENG X，LI J，et al. Vacuum Brazing Process of Diffuser［J］.Aeronautical Manufacturing Technology， 2015（5）：93-94.

裴冲，吴欣，程耀永，等. 采用BNi82CrSiB钎料钎焊1Cr12Ni3MoVN不锈钢的接头组织及性能［J］. 电焊机，2020，50（9）：268-272.

PEI C， WU X， CHENG Y Y，et al. Microstructures and mechanical properties of brazing 1Cr12Ni3MoVN stainless steel joints with BNi82CrSiB filler metal［J］. Electric Welding Machine， 2020，50（9）：268-272.

石浩江，颜家振，李宁，等. Ag-Cu钎料真空钎焊FeCrMo/MnCu阻尼合金钎焊接头的组织及性能研究［J］.热加工工艺，2019，48（13）：50-53.

SHI H J， YAN J Z， LI N，et al .Study on Microstructure and Performance of FeCrMo/MnCu Damping AlloyBrazed Joint by Vacuum Brazing Using Ag-Cu Filler Metal［J］，Hot Working Technology，2019，48（13）：50-53.

张启运，庄鸿寿. 钎焊手册［M］. 北京：机械工业出版社，2017.

Zhang Q Y，Zhuang H S.Handbook of Brazing and Soldering［M］.Beijing：China Machine Press，2017.

Alert me when the article has been cited

提交

Vacuum Brazing of Al Alloy Staggered Finned Water-cooled Radiator

Effect of Nickel Plating on the Brazing of YG6X and GH4169 with Ag Based Solder

Microstructure and Extreme Mechanical Properties of Brazing Joints Between Cemented Carbide and Superalloy