轴螺栓

A macro and micro and chemical element analysis was made on fracture of ruptured coupling bolts,torsion test was performed and stress analysis and calculation were made,the results show that when the steam turbine had failure,MP-LP rotor coupling bolts and generator-exciter rotor coupling bolts failure were classified as overload shear fracture with partial deformation .

对215MW汽轮机断裂的对轮螺栓做断口宏观、微观分析，化学元素分析，扭转试验及受力分析计算，结果表明汽轮机组在事故中，中压-低压转子对轮螺栓和发电机-励磁机转子对轮螺柱的失效类型为：过载剪切断裂，同时局部挤压变形，这是由于事故过程中轴系受到冲击扭矩作用而引起的。

Frame assembly finite element model and optimization design model of rolling press were established by the use of APDL language,adopting the degree of freedom manner of coupling node to deal with the bolt and pin shaft joint between each component of frame assembly,and at the same time take the prestressing force of bolt joint into consideration by adopting the temperature dropping method.

利用APDL语言，建立了辊压机机架有限元模型与优化设计模型，采用耦合节点自由度的方式处理机架各部件间的螺栓和销轴联接，同时对螺栓联接的预应力，采用温降法加以考虑。

The tree top axis installing hangs head on the support should use the bolt type to fastening to prevent the cap nut pine to fall causing the tree top axial translation deactivation to hang the head, bringing with the breaking axis accident

支架上安装挂头的梢轴应采用螺栓式紧固，防止螺帽松落，造成梢轴移位卡死挂头，引发断轴事故

Pump: RCDL / RCDLF standards for the installation of the electrical non-self-priming vertical multi-stage centrifugal pumps, electrical axis through the pump head and shaft connected by coupling, rod bolts to cylinder pressure, over-current components in the pump head and out of fixed paragraph water between the pump inlet-outlet in the same line.

泵： RCDL/RCDLF为安装标准电机的非自吸立式多级离心泵，电机轴通过泵头用联轴器与泵轴联接，拉杆螺栓将耐压筒、过流部件固定在泵头和进出水段之间，泵进出水口在同一直线上。

Screws; nut; washers; shells pad; pull burst, then the maximum burst; Self-Drilling; GB screw; tight set, machine-processed rice; axis with circlips, open file ring; pull the nail; Hexagon wrench; standard parts ; fasteners; order non-standard items; imports screw; high strength bolts; live bolt section; switch box screws; Electric screw; Electronics screws

螺丝；螺母；垫片；弹垫；拉爆，顶爆；自钻；国标丝杆；紧定，机米；轴用卡簧，开口档圈；拉钉；内六角扳手；标准件；紧固件；订做非标准件；进口螺丝；高强度螺栓；活节螺栓；开关盒螺丝；电器螺丝；电子螺丝

The company covers an area of 4,000 square meters, construction area of 2100 square meters, the main production equipment 9 units,Including M12, M16, M20, M24 multi-function bit cold heading machine, M20 nut machine, one Taiwan, one 300-ton friction press, 150 tons of punching 3 sets, 12 sets of ancillary equipment, fixed assets worth 698 million yuan,Mainly the production of bolts, nuts, welding nails, tower bolt, highway fence wire, a large double-headed steel wire, rivet pin, power bolts, oil fields, coal mines, bridges, steel structures, and sales of steel-based.

公司占地面积4000平方米，建筑面积2100平方米，主要生产设备9台，其中有M12、M16、M20、M24多功位冷镦机，M20螺母机一台，300吨摩擦压力机一台，150吨冲床3台，附属设备12套，固定资产价值为698万元，主要以生产螺栓、螺母、焊钉、铁塔栓、高速公路护栏丝、大型钢结构双头丝、铆钉销轴、电力螺栓、油田、煤矿、桥梁钢结构以及销售钢材为主。

Fatigue-creep rupture experiments of Nimonic 80A uniaxial specimen and hollow bolts at 550°C were carried out. Fatigue-creep process was simulated by ABAQUS using Chaboche-Nouaihas fatigue creep model. It is indicated that fatigue-creep rupture of hollow bolt is different from simple creep rupture.

该文对镍基合金Nimonic 80A进行了550℃下单轴及空心螺栓的疲劳-蠕变断裂实验，应用Chaboche-Nouaihas模型，用有限元软件ABAQUS模拟了空心螺栓的疲劳-蠕变过程。

The fastening bolts of steam turbine cylinder case were in fatigue-creep interaction.

调峰机组频繁调整负荷，汽轮机汽缸紧固螺栓处于疲劳-蠕变交互作用，对紧固螺栓多轴应力下疲劳-蠕变损伤的研究对调峰机组安全运行和维修具有重要意义。

Loading of peak generator units were changed frequently. The fastening bolts of steam turbine cylinder case were in fatigue-creep interaction. It was important to study fatigue-creep interaction damage of fastening bolts under multiaxial stress.

调峰机组频繁调整负荷，汽轮机汽缸紧固螺栓处于疲劳-蠕变交互作用，对紧固螺栓多轴应力下疲劳-蠕变损伤的研究对调峰机组安全运行和维修具有重要意义。

And guarantee the space between 2 to 3 mm, at the same time, should guarantee the even space to prevent rubbing the safety brake, the adjustment method is that: relax the rolling wheel screw, adjust the direction of axle, after being adjusted, you should fix the screw.

调整要求保证侧轮和压轮与导轨间的间隙在单侧2-3mm之间，同时还要保证笼顶安全锁两边楔块与导轨架的间隙均匀，以防止正常运行时刮蹭安全楔块，调整方法是：松开导向轮紧固螺栓，调整导向轮中的偏心轴的方向，使间隙让到要求，调整完毕后必须轮紧固螺栓紧固。

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。