钎焊的

The interior dimensions of silver brazingvalve sockets are machined to the closest tolerances and finishedsmooth to promote full capillary attraction.

银钎焊的阀门套管的内部直径的机械公差和表面光滑度要求非常精确，以确保有足够的附着力。

The interior dimensions of silver brazing valve sockets are machined to the closest tolerancesfinished smooth to promote full capillary attraction.

银钎焊的阀门套管的内部直径的机械公差和表面光滑度要求非常精确，以确保有足够的附着力。

The interior dimensions of silver brazing valve sockets are machined to the closest tolerance s and finished smooth to promote full capillary attraction.

银钎焊的阀门套管的内部直径的机械公差和表面光滑度要求非常精确，以确保有足够的附着力。

The interior dimensions of silver brazing valveockets are machined to the closest tolerances and finished smoothto promote full capillary attraction.

银钎焊的阀门套管的内部直径的机械公差和表面光滑度要求非常精确，以确保有足够的附着力。

In order to use electron beam in brazing of precise structures and thermo-sensitive materials,accommodating every kinds of curve brazing seams,a vacuum electron beam brazing temperature closed loop control system was developed using PID controller,electron beam scanning track editing and on-line adjusting technologies,real-time acquisition and handling of brazing temperature.

为了将电子束应用于精密构件及热敏感性材料钎焊，以适应复杂形状曲线钎焊缝的要求，采用电子束扫描轨迹编辑及在线调节、钎焊温度实时采集及PID控制器构建真空电子束钎焊温度闭环控制系统。

In this article, three kinds of prealloy powder were developed by water atomization method. The base attribute, pattern, phase composition, differential thermal analysis of powder were researched. Sintered density, hardness, bend strength, Young's modulus were researched as hot pressed sintering temperature changing. By using abrasive wearing equipment upbuilt by the authors, the wear resistance were determined. Green-pressing density, simulated green-pressing strength and bonding momental of high frequency brazing were assayed. SEM corrosion structure and SEM appearance of fracture were observed.

本文采用水雾化法开发了三种预合金代钴粉末：对粉末的基本属性、形貌，粉末的相组成，粉末的差热性进行了分析研究；测定了它们的烧结密度、硬度、抗弯强度、弹性模量随热压烧结温度变化的规律；采用作者自行建立的磨料磨损试验方法，测定了它们的质量磨损百分率；测定了它们的冷压生坯密度、模拟生坯强度以及高频钎焊的结合力矩；观察了热压烧结SEM腐蚀组织和SEM断口形貌。

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。

The making technics of brazed monolayer tool is system studied in the paper. The applied brazed monolayer grindingplate is empoldered and brazed monolayer diamond wheel is also pilot studied, moreover grit-brazing mechanism is analyzed. These will make good experiment base in applying brazed monolayer diamond wheel in the future.

本文系统地研究了单层钎焊磨具的制造工艺，开发出能实际使用的单层钎焊砂盘，对钎焊金刚石砂轮也作出了初步研究，并分析磨粒钎焊机理，为今后国内开发钎焊金刚石砂轮打下良好的实验基础。

The silver brazing internal diameter of the valve casing of the mechanical tolerances and smooth surface of a very precise requirements to ensure adequate adhesion.

银钎焊的阀门套管的内部直径的机械公差和表面光滑度要求非常精确，以确保有足够的附着力。

Silver brazing the valve casing of the internal diameter of mechanical tolerances and suvce smoothness requirementsWafer Rubber Seated Butterfly Valves are very precise in order to ensure adequate adhesion.

银钎焊的阀门套管的内部直径的机械公差和表面光滑度要求非常精确，以确保有足够的附着力。

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。