钎焊接头

The welding of end ring of alternating current machine and the conducting bar is the key technology for manufacturing of asynchronous traction motor with high power. China South Locomotive and Rolling Stock Industry Corporation had taken this significative study as a key project for the manufacturing of alternating current machine. According to the welding of end ring of alternating current machine, the welding of copper and copper alloy is described in this paper. Results obtained in this study are as follows. 1.By the comparison of oxyacetylene gas brazing, induction brazing and resistance brazing, it was found that high-quality welding joint could be obtained by induction brazing, which also had the highest efficiency.

交流电机端环与导条的焊接是大功率异步牵引电动机制造的一项关键技术，开展其焊接工艺研究具有重要的意义，中国南车电机公司将此课题作为解决交流电机制造的一个重点项目，本文结合交流电机转子端环焊接的课题，对铜及其合金的焊接进行了研究，主要研究结论如下： 1、通过氧乙炔火焰钎焊、感应钎焊、电阻钎焊等焊接方法的对比试验发现感应钎焊可获得优质的焊接接头，且感应钎焊的焊接效率也是最高的。

Under torch brazing condition, using brazing filler metals of Cu-based and Ag-based, a series of tests are investigated to braze Ti based cermets and 45 steel, the micrographic structure of joints and shearing test results are analyzed, they show that Ti based cermets has good brazability.

通过观察和分析钎焊接头的结合情况及剪切试验，表明 Ti基金属陶瓷具有较好的钎焊性；火焰钎焊条件下，以 H 6 2为钎料的接头的平均剪切强度为37MPa，以 BAg10 Cu Zn为钎料的接头的剪切强度达 114 MPa，以 BCu Zn Mn为钎料的接头的平均剪切强度为 4 9MP

Laser cut plates with [5] tubes yields [15] brazed joints.

激光切割板[ 5 ]管产量[ 15 ]钎焊接头。

The causes were analyzed from two aspects: the raw materials and process parameters of brazing.

针对有此缺陷的钎焊接头，详细分析了其微观组织结构，并从原材料和工艺参数两方面分析了&翅片熔蚀&现象产生的根本原因。

The effects of brazing temperature on spreadability of series Ni-P filler metal and mechanical property of the stainless steel joint brazed with the filler metal were studied.

中文摘要：研究了钎焊温度对Ni-P系钎料铺展性能及其真空钎焊0Cr13不锈钢接头力学性能的影响。

The research indicate that the performance of brazing joint using Al-Ge-Si brazing filler metal precedes to the one using HL401 brazing filler metal. And the main reason is that brittle compound such as Cu2Al is not appeared in brazing joint.

本研究建立的2090Ce铝锂合金钎缝组织形态成长模型以及母材溶解厚度控制模型对钎料的选择、钎焊工艺参数的选择及接头钎焊间隙的确定等具有重要的参考和指导作用。

High purity alumina ceramics were brazed to niobium metal to analyze the effects of brazing temperatures and Ti content in the active AgCuTi alloy filler on the joint microstructure,interfacial reactions and shear strengths.

为了确定高纯氧化铝陶瓷与金属Nb 的直接钎焊工艺参数，采用AgCuTi活性钎料，研究了钎焊温度和钎料中的钛含量对接头组成、界面反应以及接头剪切强度的影响。

The results show that the spreading area of series Ni-P filler metal increases with the increase of brazing temperature, and the spreading areas of Ni-P filler metal is larger than that of Ni-Cr-P filler metal; the shear strength of the brazed joint at room temperature increases with the increase of temperature from 925℃ to 1000℃, and the shear strength of the stainless steel joint brazed with Ni-P filler metal is superior to that with Ni-Cr-P filler metal by 30~40 MPa in the same brazing technology.

结果表明，Ni-P系钎料铺展面积随钎焊温度的升高而增大，并且相同温度下不含Cr的Ni-P钎料铺展面积大于Ni-Cr-P的铺展面积；钎焊温度从925 ℃升高到1000 ℃过程中，Ni-P、Ni-Cr-P钎料钎焊不锈钢接头的室温剪切强度均增大，并且在相同钎焊工艺下，不含Cr的Ni-P钎料钎焊不锈钢接头室温剪切强度优于Ni-Cr-P钎焊接头强度30~40 MPa；Ni-P系钎料钎焊接头高温强度随温度升高而下降，测试温度超过500 ℃时，相同温度下含Cr的钎料能够提高钎焊接头强度0~30 MPa。

Using high frequency induction brazing and TiZrNiCu filler metal, the shear strengths of the joints were low. The maximum shear strengh was only 102.1MPa, which was lower than the maximum strength of vacuum brazing. The reasons may be that excessive intermetallics, holes and oxidation existed in the joint. So TiZrNiCu filler metal isn't fit for non-vacuum brazing.The stress variation, stress distribution and crack-sensitive regions during the cooling process of brazing have been studied by Marc non-linear software.

采用气体保护高频感应加热、TiZrNiCu钎料钎焊时，接头的强度普遍偏低，最高的剪切强度只有102.1MPa，远远低于辐射加热真空钎焊的强度，其原因是接头中局部生成了过量的金属间化合物，且产生氧化，接头中含有较多的气孔等影响了接头强度，因此可以认为TiZrNiCu钎料不适合在非真空条件下的钎焊。

This article introduces joint type of copper-aluminum pipe,including straight pipe butted joint,flared pipe insert joint,reducing pipe insert joint and reducing pipe lap joint,and the welding technologies in domestic and abroad,including friction welding,energy storage welding,flash welding,resistance welding,braze welding,cold butt welding and ultrasonic welding.

介绍了铜铝管的接头形式，主要包括：直管对接、扩口管插接、缩口管插接和缩口管搭接；以及国内外的焊接技术，主要包括：摩擦焊、储能焊、闪光焊、电阻焊、钎焊、冷压焊及超声波钎焊等。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。