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曲文卿 Wenqing Qu

作者:       发布: 2015-09-16      来源:

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曲文卿     QU WENQING

 

出生年月

197202

籍贯

山东

 

职称

 副教授

学历

 研究生

 

电话

13701172912

办公室

82317702

 

系别

 材料成型及控制系

职务

 

 

电子信箱

 quwenqing@buaa.edu.cn

传真

 

 

个人主页

 

 

 

 

学习经历

 

1990(年)/09(月)- 1994(年)/06(月):北京航空航天大学制造工程系本科生

1994(年)/09(月)- 1997(年)/04(月):北京航空航天大学制造工程系硕士研究生
1997
(年)/09(月)- 2000(年)/12(月):北京航空航天大学美高梅官网注册开户-澳门mgm手机登录网站博士研究生

 

工作经历

 

2001(年)/01(月)- 2002(年)/12(月):北京航空航天大学美高梅官网注册开户-澳门mgm手机登录网站材料加工工程博士后

2003(年)/01(月)- 2003(年)/08(月):北京航空航天大学美高梅官网注册开户-澳门mgm手机登录网站材料加工工程讲师

2003(年)/01(月)-今:北京航空航天大学美高梅官网注册开户-澳门mgm手机登录网站材料加工工程副教授

2014(年)/12(月)-2015(年)/12(月):加拿大University of Western Ontario访问学者

 

  

研究领域

 

       

1、            航天器关键构件先进焊接技术

本方向在航天器热控、推进、控制系统等重要结构开展先进焊接技术研究,近年来陆续获得了航天支撑技术十五、十一五和十二五预研项目以及航天一院、五院和八院的课题支持,取得了显著的成果。     

u  航天热控系统大功率高热流密度散热结构钎焊技术

环路热管是当前最有发展前途的航天器大功率高热流密度散热结构,其最重要的部件蒸发器是由铝鞍座和不锈钢集热管通过界面连接而成,界面传热性能是关系环路热管传热的关键。

 

两种不同型号的环路热管的蒸发器软钎焊结构

采用软钎焊技术成功制造了环路热管蒸发器,2009年通过501所热测试,其传热性能高于传统导热胶一个数量级。2011年应用于某型号卫星中,目前该卫星已经在太空在轨运行,当前正在钎焊制造的另一型号蒸发器即将用于另一航天器中,成果已申报2项发明专利。

u  航天推进系统异种材料管路结构钎焊技术

异种材料结构在航天推进系统中应用极其广泛。铝合金、钛合金、不锈钢三种异材管路结构焊接技术2008年成功应用于某型号卫星推进系统管路结构验证件,申请发明专利3项。碳纤维复合材料喷管/铌合金采用无铜钎料真空钎焊技术2009年在八院通过热试车。钛合金/不锈钢焊接结构2010年应用于某型号运载火箭换热器舌形管组件。小腔检漏装置是载人航天工程首次交会对接任务中检测交会对接成功与否的关键机构,协助航天八院优化了结构设计,提出了小腔检漏装置的钎焊技术并获得应用,该技术应用于神舟八号、九号和十号与天宫一号的对接任务中。

u  电子器件强化传热界面金属连接技术

低温扩散钎焊技术:目前正在开展大功率高热流密度界面强化传热技术研究,研制成功了铝合金低温界面扩散钎焊技术及其热界面金属材料,可以实现80℃条件成功连接铝合金,且在250℃条件下加热不失效的连接效果,申请发明专利2项。

低温金属连接技术:目前正在广泛应用的导热胶和导电胶存在着导热、导电效果差、寿命短等问题,开发了新型的完全替代导热胶和导电胶的金属连接材料和技术,能够在低于100℃条件下连接铝合金、不锈钢、钛合金、铜等材料,具有导热导电效果优良、寿命长等优点。

 

 

u  特种活性焊接技术

活性软钎焊技术:发明了一种能够在空气中直接软钎焊陶瓷与金属的方法,申请专利1项。

铝合金活性熔焊技术:焊接气孔是铝合金焊接问题最致命的障碍之一,发明了一种能够有效去除焊接气孔的新方法,采用一种新型的去膜除气剂能够实现铝合金的直流正极性焊接,有效实现无气孔缺陷,并且大大降低焊接电流,提高结构性能和生产效率,申请专利多项。

 

活性搅拌摩擦焊(钎焊)技术:S线是铝合金搅拌摩擦焊的痼疾,由氧化物造成。发明了一种能够改善铝合金S线的新型活性搅拌摩擦焊方法。针对铝合金壁板结构发明了一种活性搅拌摩擦焊/钎焊的方法,有效改善壁板搅拌摩擦焊疲劳性能差的问题,提高了结构密封性能。

2、         空天关键部件焊接基础理论研究

本方向在航空航天关键焊接构件可靠性基础理论开展研究工作。

u  运载火箭低温贮箱2219铝合金焊接接头组织与力学性能分析

2219铝合金是新一代运载火箭贮箱主体材料,其组织、性能以及焊接性能对结构安全可靠性存在巨大影响,针对两种热处理状态T62T872219铝合金母材和焊接接头(包括变极性TIG、变极性等离子、搅拌摩擦焊、FSW/VPPAW混合焊接结构)的力学性能、断裂性能和微观组织演化开展了研究,结果对于运载火箭低温贮箱的焊接制造具有重要指导。

u  搅拌摩擦焊结构可靠性评定技术

进行了飞机下壁板铝锂合金FSW结构疲劳行为研究、高强铝合金202470507075FSW结构的冲击韧性、断裂韧性、延性断裂K-R试验研究、高速列车焊接结构可靠性实验研究,参与了国家某大型安全基础研究项目摩擦焊接×××基础研究、科技部04专项搅拌摩擦点焊装备研制等项目。

u  航天控制系统钎焊接头复杂热力环境实验评价

开展了航天控制系统金合金导电环软钎焊接头金脆性机理及控制方法研究。进行了软钎焊接头在复杂热力环境实验条件(室温拉伸、高温拉伸、室温蠕变、高低温循环后拉伸、三种温度高温存储后拉伸、振动试验后拉伸等)下的性能分析。

 

u  真空电子器件钎焊接头力学性能评价

真空电子器件采用了多种材料(金属、陶瓷等)和多种钎料、多种焊接方法进行制造,对其焊接接头的组织和性能进行了研究和评价。

 

       

荣誉及奖励

         

  

         

开授课程

         

本科生:《制造工程基础II》、《工程材料学》、《焊接工艺与设备》、《专业课程设计》

研究生:《现代造船技术》

         

教学及科研成果

         

        

 

 

  

学术与社会服务

 

         

 

 Curriculum Vitae (CV)

NAMEWenqing QU    GENDERMale

DATE of BIRTHFeb. 1, 1972

TITLEAssociate Professor, Beijing University of Aeronautics & Astronautics(Beihang University)

ADDRESSNo. 37 Xueyuan Road, Haidian District, Beijing City, China

WORK PHONE 86-10-82317702

MOBILE PHONE13701172912

EMAILquwenqing@buaa.edu.cn

EDUCATION

 

Sep. 1997 Dec. 2000   Beihang University, Ph.D, Mechanical Engineering & Automation 

Sep. 1994 July 1997   Beihang University, Master, Welding    

Sep. 1990 July 1994   Beihang University, Bachelor, Welding Process & Equipment               

 

WORK EXPERIENCE

 

Dec. 2014-Dec.2015      Visiting Scholar, University of Western Antario, Canada

Since Sep. 2003        Associate Professor, School of Mechanical Engineering & Automation(SMEA)Beihang University

Since Jan. 2003       Staff (Deputy Dean for Graduate Studies), SMEA, Beihang  University

Jan. 2001-Dec. 2002    Post-Doctor Researcher, SMEA, Beihang University

 

RESEARCH INTERESTS

 

1Brazing

    Vacuum Brazing of non-metal with metal

The vacuum brazing process of Carbon fiber composites jet tube and niobium alloy using copper-free silver base filler metal was developed, and the laminate injector of stainless steel(or Titanium alloy) was also vacuum brazed, and the heat run had been passed in shanghai in 2009, shown as Fig.1. 

    High Frequency Induction Brazing of dissimilar metals

The brazing processes of dissimilar metals tube such as Aluminum alloy with stainless steel, Aluminium alloy with Titanium alloy, Titanium alloy with stainless steel were developed, and three patents for invention were authorized, shown as Fig.2. These technologies were used in the validation structure of the tube structures in a certain satellite propulsion subsystem. The brazed tube structures of Titanium alloy with stainless steel were used in the heat exchanger liguate tube of a certain launch vehicle, shown as Fig.3.

    Other Brazing Processes of Special structures

The High frequency induction brazing processes of Aluminum alloy square tube with stainless steel tube was developed. After 24 hours marinating in liquid nitrogen, the leak rate of brazed joint is lower than 1×10-10Pa.m3/s, shown as Fig.4. The locule leak detection assembly is the key equipment which detecting whether the rendezvous and docking is successfully or not in the first mission of manned space flight project. We completed the optimization of structure design, and developed the brazing technology of the locule leak detection assembly. This technology has been used in the mission of rendezvous and docking of No. 8, No. 9, and No. 10 of Shenzhou spaceship with No. 1 of Tiangong spacecraft, shown as Fig.5.

2Soldering

    Large Area Soldering for Loop Heat Pipe vaporizer structures

As the most important component of LHP(Loop Heat Pipe), the evaporator consists of aluminum alloy saddle seat and stainless steel heat collection pipe. Using the large area soldering process, the aluminum alloy saddle seat and stainless steel heat collection pipe was bonded together. The thermal property is higher nearly ten times than that of the evaporator glued joint by the thermally conductive adhesive. The relevant research results have been applied two patents of invention. Two types of LHP vaporizer brazed structures has been used in the thermal control subsystem of certain satellite and spacecraft.

 Low temperature interface diffusion bonding Process

Supported by the superpower and high density of heat flow interface heat transfer enhancement technology, now a new low temperature interface diffusion bonding technology was invented, it can be achieved that bonded at 80 but not remelted over 250. And the thermal conduction of the interface bonded structure is over 10 times than that of glued interface by the thermally conductive adhesive, shown as Fig.7. The relevant research results have been applied two patents of invention.

 Solder Sealing Process of inertial instrument system

The High frequency induction soldering process and the equipment for the aluminum alloy inertial controlling device were developed. The inertial controlling unit can be solder sealed in tens seconds, the heating time is shorter than that using iron, so good quality and productivity can be achieved, shown as Fig.8.

 

3Special Active Welding Process

    The new DCSP-TIG welding process of Aluminum alloy

Well known, The porosity is the worst problem of Aluminum alloy welding, and Aluminum alloy can not be welded by DC straight polarity (DCSP) TIG welding process, because the compact Al2O3 layer covers on the surface of Aluminum alloy. A new DC straight polarity TIG welding process for Aluminum alloy was developed to wipe away the welded porosity, and 7 patents of invention had been applied. New brazing flux was used to remove Al2O3 and H2 pore in the welding process. No porosity appeared in the welded seam, and the joint property and productive efficiency were elevated, shown as Fig.9.

    Active Friction Stir Welding(Soldering) Process

S line is the defect difficult to avoid from FSW seam of Aluminum alloy, caused by Al2O3 layer. The new active FSW process was developed to avoid the appearance of S lineshown as Fig.10. And another active friction stir welding/Soldering process was developed for Aluminum alloy wall panel to improve the fatigue property of Aluminum alloy FSW joint. The relevant results have been applied two patents of invention.

    Low-Temperature Metal Bonding process

Many problems exist in the Thermally Conductive Adhesive and conductive adhesive, such as poor heat and electric conduction, short time in service etc. A new metal bonding process has been developed as the replacer of thermally conductive adhesive and conductive adhesive, many metals such as Aluminum alloy, stainless steel, Titanium alloy and copper can be bonded under the temperature of 100, with the advantage of excellent heat and electric conduction, long time in service.

    Active Soldering process

The process for directly bonding ceramic with metal in air was developed, one patents of invention have been authorized.

 

4Microstructures and Properties of bonded joints

    Microstructures and Properties of 2219 welded joints

2219 aluminum alloy is the conduithead body metal of china new launch vehicle, its microstructure, property and welding performance has the most important effect on the safety of the welded conduithead. So the microstructures, mechanical properties, and fracture properties of base metal and the welded joints of two heat treatment state(T62, T87) 2219 Aluminum alloy were studied, the welded joints include the variable polarity TIG (VP-TIG) welded joint, variable polarity plasma arc (VPPA) welded joint, friction stir welded (FSW) joint, and FSW/VPPA cross welded joint. The results have the important significance to the welding and safe assessment of launch vehicle conduithead.

    Microstructures and Properties of Aluminum alloy FSW joints

The microstructures and properties of FSW joint of Aluminium alloy(such as 2024, 7050, 6082, Al-Li-S-4 alloy etc) were studied, including tensile strength, impact toughness, fracture toughness, fatigue property, shown as Fig.12 and13.



 


    Microstructures and Properties of Brazed joints in electron device

The microstructures and properties of brazed joints of vacuum electron device were studied.  Many materials combinations were used in the vacuum electron device, such as oxygen-free copper, stainless steel, iron, Monel, kovar alloy. They are all brazed together in the vacuum electron device, so their microstructures and properties were obtained in order to direct structural design and optimizing of process.

    Complex Thermal-mechanical environmental assessment of golden alloy soldered joint in aerospace control subsystem

The microstructures and properties of soldered joints of golden alloy in aerospace control subsystem in complex thermal-mechanical environment were studied, including room temperature tensile test, room temperature creep test, high temperature tensile test, high-low temperature cyclic test, high temperature storage test. The soldered joints include SnPb soldered joint, InPb soldered joint, and InPbAg soldered joint.

 

 

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