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1.Microstructure of EMP-TIG welded Mg/Al dissimilar metal joint
Mg/Al异种材料脉冲TIG焊接头的组织结构收藏指正
2.a metal joint formed by softening with heat and fusing or hammering together.
通过热量软化和锤打融化形成的金属接合处。收藏指正
3.The quality of joint has much effect on the age limit of airplane. The fatigue strength can be improved by using interference-fit joint in metal joint-structure.
连接质量极大地影响着飞机的寿命，干涉配合连接能成倍提高接头的疲劳强度。收藏指正
4.The expression for fatigue crack propagation rate in the fusion zone of the Cr25Ni13/13CrMo44 dissimilar metal joint by Paris equation is as follows:da/dN=7 07×10 -13 (△K) 3 863
疲劳裂纹在 Cr2 5 Ni13/ 13Cr Mo44异种钢接头的扩展速率为 :da/ d N=7.0 7× 10 - 1 3(△ K ) 3.86 3收藏指正
5.Applications of Metal Bellow Expansion Joint and Buffer Tank in Reducing the Vibration and Noise of the Oil Transportation Pump
金属波纹伸缩节及缓冲罐在降低输油泵振动和噪声方面的应用收藏指正
6.Air intake and air outlet of motors use metal hose expansion joint; Entrance and exit of pump use rubber flexible connectors.
风机进出风接口处均设金属伸缩软管柔性接头；水泵进出口均设橡胶软接头。收藏指正
7.Boundary and performance constraints were determined on the basis of the newest edition of Standard of Expansion Joint Manufactures Association of American EJMA-98 and National Standards of China GB/T12777-1999, Metal Bellow Expansion Joint Common Technical Conditions.
以最新版的美国膨胀节制造商协会标准(EJMA-98)和GB／T12777-1999《金属波纹管膨胀节通用技术条件》作为设计依据，确定边界约束和性态约束条件；收藏指正
8.Aim at to turn a dense oil pump in the movement the metal bellow expansion joint and buffer tank was installed in the dense oil pump export because of the violent vibration and noise cause by the discharge and the pressure pulsation, The result show Lowered the vibration and noise availably was obvious.
摘要针对转子式稠油泵在运行中因流量和压力脉动所引起的剧烈震动和噪声，在稠油泵出口安装金属伸缩节和缓冲罐，有效地降低了震动和噪声。收藏指正
9.According to the standard of America ASTM E647-81, the fatigue crack growth rates for 13CrMo44 steel and its weld metal of butt joint welded with an electrode mode of P5 (E309Mo) are measured with Compact-Type(CT) specimena The length of cracks is measured hy means of a visual measurement and a great number of data in the test are calculated by an incremental polynomial method with a microcomputer.
本文根据美国ASTM F647-81标准,采用紧凑拉伸试样,对13CrMo44钢及用P5(E309Mo)焊条的手弧对接焊缝金属的疲劳裂纹扩展速率进行了测定. 试验采用表面直读法测量裂纹长度、并采用抛物线回归法对大量试验数据进行微机处理.收藏指正
10.The results show that due to diffusion of the elements,a layer of intermetallic compound is formed between these two materials as they are bonded together directly,leading to a 30% strength of the base metal(ZQSn10-10) in joint region.
结果表明:Ti-6A l-4V/ZQSn10-10直接扩散连接时,由于母材组元的相互扩散和迁移,在交界面附近形成了金属间化合物层,接头强度仅为母材基体强度的30%左右。收藏指正
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