焊接的

The author determines the fatigue property in super long life region of the cruciform joint of 16MnR base material of one ...

作者利用瑞士RUMAL电磁高频疲劳试验机测定16MnR板材十字单面焊接接头在超长寿命区间的疲劳性能，并采用标准法和Dixon-Mood法对测得的试验数据进行处理，整理出十字单面焊接接头在超长寿命区间的疲劳极限，这些结果可以为焊接结构的可靠性设计及服务寿命估计提供试验数据基础。

The results showed that the fracture toughness of the weld of HFW pipe was lowest.The value of absorbed energy of HFW weld was closely related to the heat treatment process.But the fracture toughness of fusion zone of submerged-arc welded jointer,its microstructure was coarse granular bainite,and was lower than the other locations of heat affected zone;and with the increasing of steel strength,the effect of welding heat cycles on the pipeline steel became stronger,and form coarse microstructure in fusion zone leading to decrease fracture toughness.

结果表明，高钢级管线钢高频焊接焊缝处的断裂韧性最低，其冲击功大小与热处理工艺密切相关；而埋弧焊接热影响区断裂韧性在熔合线处最低，其主要原因是此处的组织为粗大的粒状贝氏体，而且强度越高焊接热循环对管线钢的作用越强，在熔合线附近更容易产生粗大组织，使断裂韧性降低。

Recently, with the application of finite element method in engineering mechanics, it is necessary and possible to study the welding procedure of domestic oil derrick materials, for the purpose of more appropriate procedure and to improve the welding quality and productivity of oil derrick.

近年来，随着计算机辅助设计在工程中的应用，有可能也有必要对国内井架材料的焊接工艺进行进一步的研究，制定合理的焊接工艺，提高井架焊接质量。

After verification of FEM, 45 species of 15 series are computed. The major parameters including slippage coefficients, pretensions forces, dimensions of angles, arrangement of bolts, connection method among angle, beam web, column flange, and so on are studied. Some important conclusions are drawn.At last, Advices for seismic design based on tests and FEM analysis are presented at last. The study is rather comprehensive and systematic, and the conclusions. can be useful for revising design code, guiding design of engineering, and provide good basis for further to study behavior of shear beam-to-column connections.

主要研究了摩擦系数、螺栓预拉力、螺栓线到与柱连接角钢肢背的距离、螺栓直径及级别、梁长、螺栓排列布置、梁高、柱翼缘厚度、角钢厚度、角钢长度、梁腹板只与角钢肢尖相焊接、钢材强度、角钢与梁柱均栓接、角钢与柱焊接与梁栓接、角钢与梁柱均焊接等参数对腹板双角钢梁柱连接滞回性能的影响，得出了一系列重要的结论。

The paper analyzed the residual stress in the machine frame of drying part of the high speed paper machine caused by welding, discussed the effect of welding parameters on the residual stress and compared the mechanisms and efficiencies of eliminating the weld stress by heat treatment and aged-vibrating processes.

对高速纸机干燥部机架焊接所产生的残余应力进行了分析，指出了焊接工艺参数对残余应力的影响；分析比较了热处理和振动时效两种工艺方法消除焊接残余应力的机理和效果。

The paper analyzed the residual stress in the machine frame of drying part of the high speed paper machine caused by welding, discussed the effect of welding parameters on the residual stress and compared the mechanisms and efficiencies of eliminating the weld stress by heat treatment and aged-vibrating processes.

摘 要：对高速纸机干燥部机架焊接所产生的残余应力进行了分析，指出了焊接工艺参数对残余应力的影响；分析比较了热处理和振动时效两种工艺方法消除焊接残余应力的机理和效果。

The results show that laser-arc welding can achieve full penetration by single-path butt jointing through appropriate parameters; Y shape groove with 8 mm truncated edge can enhance the penetration ability of laser-arc hybrid welding. Low welding speed is good for penetration, however the limitation still exists for hick plates joint. Gap is significant factor of penetration when work pieces is large thickness. The hardness of thick plates joint shows that there is big difference in mold of vertical thermal cycle using laser-arc hybrid welding.

结果表明：通过激光功率等焊接规范匹配，激光-电弧复合焊接能实现20 mm厚板的全熔透单道对接；钝边为8 mm的Y形坡口有助于提高厚板激光-电弧复合焊缝熔透能力；降低焊接速度有利于提高熔深能力；工件厚度较大时，装配间隙对焊缝熔深能力的影响较为显著；接头硬度表明厚板激光复合焊焊缝纵向热循环模式存在较大差异。

The welding of the tubes to the tube plate is a key process during the manufacturing of the heat exchanger.

管子-管板焊接是换热器生产的关键工序，通过对缩进式管子-管板焊接技术进行的试验和分析，确定了最佳的焊接参数，供换热器制造厂有关技术人员参考。

is first been used to describe the gap and root face of welding seam which is the important feature sizes and the welding current which is the most important controlling parameters MIG welding penetration and the welding time in quantity and the fuzzy math.

依据这一特征，应用模糊数学的方法对焊缝的重要特征尺寸间隙和纯边、MIG焊熔透的重要控制参量焊接电流以及焊接时间给予定量描述，并建立了视觉弧焊机器人焊接参数自动规划模糊数学模型。

Simulation of robot welding process is completed with the application of ROBOGUIDE, the simulating path is changed to TP program for practical welding, and TP program is transferred to robot controller, which all the work about off-line programming and simulation of the saddle-backed welding seam are completed.

应用离线仿真软件ROBOGUIDE完成马鞍型焊缝曲线焊接过程的仿真，将仿真路径转换成实际TP程序，并输入到机器人控制柜，完成马鞍型焊缝焊接过程的离线编程及仿真，运行TP程序完成马鞍型焊缝的实际焊接。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。