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In summary, this dissertation has made contribution to welding arc physic knowledge, discovered the respective spectrum signal features of each kind metal transfer mode, put forward an new approach for detecting droplet transfer in metal gas arc welding and provided enough theoretical and experimental guidance to the further research, meanwhile, it has also predicted the applications of arc spectrum information in other fields.

总之，本文的工作充实了焊接电弧物理和电弧光谱信息的知识内容，提出了熔化极气体保护焊熔滴过渡传感和检测的新手段，发现了各种熔滴过渡的多方面光谱特征，为熔化极气体保护焊熔滴过渡的研究和过程控制领域的开拓，为新型电弧传感器的开发，奠定了理论、实验和技术的基础，同时也预示了电弧光谱信息在其它领域应用的可能。

A computerized welding arc spectrum information sampling and processing system are developed to study of the ultraviolet spectrum distribution feature. Corresponding softwares also is developed. A process for sampling the ultraviolet spectrum automatically and the real-time monitoring of welding parameter are realized. based on the principles of the physics of arc and spectroscopy the information of welding arc ultraviolet spectrum sampled is changed and processed.

焊接电弧紫外光谱信息的计算机采集与处理系统*韩国明吴钊柳刚云绍辉李俊岳摘要以焊接电弧紫外光谱的分布特征为研究对象，研制了一套焊接电弧紫外光谱计算机采集与处理系统并开发了相关软件，实现了紫外光谱采集过程的自动化、焊接电流与电弧电压的实时监测，并在电弧物理和光谱学原理的基础上，对采集的焊接电弧紫外光谱信息进行变换和处理。

This system which can do correlation analysis among vacuum arc imagine, light intensity spectrum density, electron density, vacuum arc voltage, vacuum arc current has a series of properties like synchronous exposure, high sampling speed, good quality with comparatively low price, strong functional software, friendly user's interface and so on.

本课题研制成功了真空电弧动态图象高速微机采集系统，该系统具有同步曝光、采样速度快，性能价格比高，软件功能强，用户界面好等特点，该系统可对瞬时的真空电弧形态，光强密度，电子密度，电弧电压，电弧电流进行相关分析。

I plant the production of welding equipment and cutting equipment SCR rectifier arc welder, SCR DC argon arc welding machine, AC arc welder, air plasma cutting machine and carbon dioxide gas shielded welder six series, more than 20 varieties.

我厂生产的焊接设备和切割设备可控硅整流弧焊机、可控硅直流氩弧焊机、交流弧焊机、空气等离子切割机和二氧化碳气体保护焊机等六大系列，二十多个品种。

Nebula Series digital inverter welding machine Products include: manual welder, argon arc welding machine DC pulse argon arc welding machine, argon arc spot welding, melting pole gas shielded welding machine, gas shielded MIG pulse welding machine and six functional welding machine more than 30 varieties.

Nebula系列数字化逆变焊机产品有：手工焊机、直流氩弧焊机、脉冲氩弧焊机、氩弧点焊机、熔化极气保焊机、熔化极脉冲气保焊机及六功能焊机等30多个品种。

In addition, the effects of current, cathode cone angle and arc length on the current density and arc pressure distribution at anode surface in GTA welding are analyzed by the use of the built arc model, and the computed results agree well with the experimental results.

另外，运用建立的电弧数学模型，分析了焊接规范参数变化对直流GTAW电弧阳极表面电流密度和电弧压力径向分布规律的影响，计算结果与实验结论基本一致。

On the basis of analyzing running condition arc furnace system and researching characteristics of dust remover of arc furnace, taking the application of Harsvert-A in dust removing transformation of steelworks as an example, successful application of high-voltage frequency conversion technology on dust removing system of arc furnace in steelworks is introduced.

在分析了电弧炉设备的运行现状和研究了电弧炉除尘系统特点的基础上，通过Harsvert-A型高压变频器在某炼钢厂除尘系统改造中的应用实例，介绍了高压变频技术在炼钢厂电弧炉除尘系统中的成功应用。

The company mainly produces: NBC, NB series of gas protection welder, MZ series of automatic submerged arc welding machine, RSR series storage stud welding machine, WS series inverter inverter machines, LGK8 series of air cutting machine, ZX5, ZX7 series DC arc welding machine, BX series of exchanges, such as arc welding machine over 80 kinds of welding equipment.

本公司主要生产：NBC、NB系列气体保护焊机、MZ系列自动埋弧焊机、RSR系列储能螺柱焊机、WS系列逆变直流氩弧焊机、LGK8系列空气切割机、ZX5、ZX7系列直流弧焊机、BX系列交流弧焊机等80多种焊接设备。

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。

One of, RHDHG series arc protection and created a domestic light, the low-voltage electric arc light protection precedent, to fill the domestic electric arc light at the time unable to protect the power bus of the blank, is now at more than 100 domestic substations, power plants, petrochemical and other high institutions to use more than 400 Units, the protection of the principle of new, faster removal of time to failure, fault location accuracy, user satisfaction high.

其中，RHDHG系列电弧光保护开创了国内中、低压电弧光保护的先河，填补了国内在电弧光发生时无法保护电力母线的空白，目前已在国内的100多个变电站、电厂、石化等企事业单位使用400多台，保护原理新颖，切除故障时间快，故障定位准确，用户满意度高。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。