查询词典 arc welding

Based on the failure analysis of hot roll, this paper optimizedly adjusts alloy system and summarizes the experience of rolling wiresand improves ail processing properties. Then, it analyses the effects on some natural parameters such as alloy transfer coefficient, surfacing layers, welding current and arc voltage etc.. It confirms the fitting ageing technique. Also, it discusses the microscopic structural transformation back and forth ageing and the effects on hardness change of overlaying metal by some alloying elements including C, Cr, V, W, Mo, Ni, Mn, B, Re through OM, SEM and X-ray diffraction analyses. Finally the abrasive resistance, red hardness, thermal fatigue property and anti-high temperature oxidability are investigated in experimentation.

全文在热轧辊失效分析的基础上优化调整合金体系，总结了焊丝轧制的经验，改善各种工艺性能，分析了几个特性参数的影响，确定了适宜的时效工艺，并通过光学显微镜、扫描电镜和X-射线衍射对时效前后的显微组织转变以及部分合金元素如C、Cr、V、W、Mo、Ni、Mn、B、Re对堆焊层硬度变化的影响进行分析，最后通过试验考察了堆焊层金属的耐磨粒磨损性能、红硬性、耐热疲劳性和抗高温氧化性。

Steel gas mains by electric arc, oxy- acetylene flame, or other welding

结构钢材焊接工以电弧、氧乙炔焰或其他焊接工序，割或焊接结构钢材，包括

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。

Welding is a complicated process in which arc physics, heat transfer, metallurgy and mechanics are involved.

焊接是一个涉及电弧物理、传热、冶金和力学的复杂过程。

The research on TIG welding arc ultraviolet spectrum has been completed by using this system.

利用此系统对TIG焊电弧紫外光谱进行了研究，成功地获得了不同焊接规范下。。。韩国明吴钊柳刚李俊岳

A moving free interface is formed by interaction between welding arc and weld pool.

电弧与熔池的交互作用在两者之间形成了一个不断移动变化的自由界面，对界面的处理是实现电弧与熔池交互耦合的关键。

The effect of external AC magnetic field on arc shape and weld quality of magnesium alloy TIG welding were analyzed.

中文摘要：采用组织分析和性能检测的方法，研究了外加纵向交流磁场对镁合金TIG焊电弧形态及焊缝质量的影响。

Effect of compelled arc constriction on weld penetration of alternative current welding is studied.

进行了交流、直流正接和直流反接A-TIG焊，发现极性不同时活性剂对熔深的影响也不同。

Now in A-TIG welding, the coefficient of arc shrinking and the weld pool surface tension result in penetration increased.

目前认为A- TIG 焊使熔深增加的机理是电弧收缩和表面张力共同作用的结果。

Departures between welding arc and the centre of weld and their directions and measure are recognized from the images of the tracking weld.

根据这一结果，调整电弧与焊缝中心的相对位置，消除电弧与焊缝的偏离，达到焊接电弧准确跟踪焊缝的目的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。