焊接的

By using a piece of 50-60mm tube,vertical opening and then press it averangely until it completely flated on the parallet steel sheet,without any visible cracking or flaws.

将一根长约50-60mm的钢管纵向剖开，用均匀压力使焊接区的管段在平行的钢板之间完全压扁，焊接区不得有明显的裂痕或残缺。

To meet the need of improving the welding quality, the microstructure and mechanical properties of the welded joints and the productivity, pure aluminum plate 99.60 is used in the experiment. Combined with micrographic analysis, the effects of electron beam welding on its mechanical properties ,such as strength, hardness and plasticity are studied in this paper.

本文针对应用越来越广泛的纯铝Al99.60，以及对其焊接质量、接头性能及生产率提出的新的要求，结合金相分析，探讨了电子束焊接对其强度、硬度、塑性等基本力学性能的影响规律。

The principle problems in existent control methods are analyzed in detail, and effective methods to improve the processing properties of MIG/MAG short circuiting welding arc are presented.

阐述了MIG/MAG短路过渡焊接电弧工艺性能存在的问题，介绍了各国在该领域的研究现状，详细分析了现存控制方法在原理上存在的问题，提出有效改善MIG/MAG短路过渡焊接电弧工艺性能的方法。

Experiment results show that though the grains of the heat-affected zone are seriously coarsened due to the effect of welding thermal cycle, there is no softened zone and the strength of the welded joint doesn′t decrease because the transformed microstructure is different from the original one.

结果表明：经过焊接热循环的作用，虽然热影响区的晶粒明显粗化，但由于所获得的二次组织形态与钢筋原始组织不同，热影响区未发生软化，也不存在焊接接头强度下降的问题。

We find that the proportion of the contribution of the three factors on the fatigue strength improvement of the peened joints depends on the base metal static strength.

结果表明：超声冲击处理提高焊接接头疲劳强度的硬化，改善焊趾几何外形和在焊趾区形成表面压应力三者贡献的大小，与被处理焊接接头的母材静强度有一定的相关性。

Based on virtual manufacture,principle and feature of virtual refitting design were presented and implementation method and operation mode of virtual refitting system were put forward.

基于虚拟制造技术讨论了设备虚拟改装的原理和特点，提出虚拟改装系统的实现方法和运行模式，讨论了老旧机床本体及新附加装置的建模方法，并在工业用非重复充装焊接钢瓶生产线建设中，进行了焊接专机的改装实践。

The thin welded pipe is also advantageous in resistance to cracking caused by accumulation of strains introduced during roll-forming, swaging both ends of the welded pipe and hydraulic expansion.

薄的焊接管还有利于在滚轧成型、锻压焊接管的两端和液压膨胀过程中抑制由于导入应变的积聚而产生的破裂。

The company owns a professional team of engineering technicians experienced in the research, design and development of welding equipment, complete processing and manufacturing facilities, advanced designing, testing and detecting means, specializing in the production of seven major categories, eighteen series and about one hundred models of welding equipment like various AC arc welders, DC arc welders, argon arc welders, CO2 gas welder, submerged arc welders, resistance welders and air plasma cut-off machines.

公司拥有一支多年从事焊接设备研究、设计、开发的专业工程技术人员队伍，具有完备的加工制造条件，先进的设计和试验检测手段，专业生产各类交流弧焊机、直流弧焊机、氩弧焊机、CO2气体保护焊机、埋弧焊机、电阻焊机、空气等离子切割机等七大类十八个系列近百个型号规格的焊接设备。

The rear axle casing is stamping welded, its performance compareing favorably with the one made by traditional two poles press axle tube , which also can be adopted with different welding structure according to different user and more flexible .

后桥壳为冲压焊接式，性能优于传统的两端压半轴套管的铸造桥壳，并且可以根据不同用户要求采用相应的焊接结构，柔性化更高，可达到一壳多样的效果。

6 3 Bracket: Steel plate thickness: 0.6 ～ 0.9 Structure Structure 1: evaporator for single temperature control system (Single-capillary evaporator) Structure 2: evaporator for double temperature control system (Double-capillary evaporator) Structure 3: evaporator for three way temperature control system (Three-capillary evaporator) Key process Tube bending, Welding, Mono shelf assemble, Assembly welding, Leakage test, Cleaning, Coating, Inspection, Packing Technical standards Wire pitch:≥ 5 ㎜, can produce according to the drawing or sample supplied by clients, also can help the clients design and produce different evaporators.

0.9 结构结构1 ：蒸发器的单一温度控制系统结构2 ：双蒸发器温度控制系统结构3 ：蒸发器的方式为三个温度控制系统关键过程弯管，焊接，组装单棚，大会焊接，泄漏试验，清洗，涂料，检验，包装技术标准线间距：≥ 5 ㎜，能产生根据图纸或样品提供的客户，还可以帮助客户设计和生产不同的蒸发器。

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％。