The GMAW welding thermal process for low alloy steel JG590 was analyzed based on the established heat source model.
将熔化极气体保护焊（GMAW）的热输入处理为三维移动串热源，建立了串热源模型，模拟了JG590低合金钢的GMAW焊接热过程。
In GMAW welding process, when the welding speed reaches a certain threshold, there will be onset of weld bead undercut defects.
在GMAW焊接过程中，当焊接速度达到某一临界值时会出现咬边缺陷，进一步提高焊接速度就会产生驼峰焊道。
The high-speed twin arc pulse GMAW welding technology possesses the advantages of high efficiency, high quality and automatization, and is paid much more attention to nowadays.
双电弧共熔池脉冲gmaw焊集高速高效、优质和自动化于一体，近来备受重视，但国内对此研究不多。
The experiment result shows that the GMAW welding characteristic could be improved obviously by adjusting the parameters accurately, and the different welding technical requirement can be meet.
结果表明通过对波控参数精确的调节，可以有效地提高GMAW的焊接性能，可以满足不同的焊接工艺的要求。
Based on the through the arc sensing method, a method is put forward to recognize the disturbance information of gas metal arc welding (GMAW).
基于电弧传感的检测方法，提出了一种识别GMAW焊接过程干扰信息的方法。
Gas metal arc welding (GMAW) is the main welding method in welding production.
熔化极气体保护焊(GMAW)是焊接生产中常用的焊接方法之一。
This paper illustrates the applications of mixed gases in GMAW and analyzes the different proportion of shielding gas impacts on the welding technics performance and quality in GMAW.
阐述了混合气体在熔化极气体保护焊中的应用现状，分析了保护气体成分的不同配比对熔化极气体保护焊的焊接工艺性能、焊接质量的影响。
In order to improve conventional GMAW process the effect of shielding gas quality and mixed ratio of different gases on welding quality are studied and useful fixtures are developed.
为提高常规气电焊工艺水平，进行了保护气体质量及配比对焊缝质量影响规律的研究及气电焊辅具的研制。
The welding method used was a PC-GMAW process with mixture gases shielding. Central crack for the welded plate was located in the fusion zone between welding seam and heat-affected zone.
焊接方法为脉冲熔化极混合气体保护焊，焊接板的中心裂纹处于焊缝与热影响区之间的熔合区。
The welding parameters of CO2 welding iron, P-GMAW of iron and DP-GMAW of aluminum are long-step calibrated through a lot of tests.
通过大量工艺试验，对CO2焊钢、P -GMAW焊钢、DP -GMAW焊铝等工艺的焊接参数进行了大步距标定。
The results showed that the backside melting width can be predicted by the network model during P-GMAW bead welding the thin plate when the welding parameters were input variable.
结果表明，在P -GMAW薄板堆焊中，以焊接规范为输入变量，利用该网络模型能很好的预测背面熔宽。
Then, high-speed arc welding processes are introduced, such as tandem GMAW, PAW-GMAW and DE-GMAW, based on two categories:twin or more wires arc welding process and two-torch combined welding process.
然后主要从双丝或多丝电弧焊工艺和双焊炬组合焊接工艺两个大的方面着重介绍了纵列式熔化极气体保护焊、等离子弧-熔化极气体保护焊和双电极熔化极气体保护焊等高速弧焊工艺。
Due to the rapidly growing requirement for high-pressure heave-wall pipeline installation, mechanized GMAW process is a key technology for increase welding productivity.
由于高压厚壁油气长输管线建设的迫切需求，采用自动GMAW焊是提高管线建设生产率的关键。
The waveforms of the welding voltage and current, corresponding to short-circuit metal transfer of CO2 GMAW, are evaluated to acquire the characteristic of short-circuit metal transfer.
介绍了熔滴过渡的数据采集系统，采用多种数据处理方法对焊接电压波形和电流波形进行分析，并从中提取出短路过渡的熔滴过渡特征。
The waveforms of the welding voltage and current, corresponding to short-circuit metal transfer of CO2 GMAW, are evaluated to acquire the characteristic of short-circuit metal transfer.
介绍了熔滴过渡的数据采集系统，采用多种数据处理方法对焊接电压波形和电流波形进行分析，并从中提取出短路过渡的熔滴过渡特征。
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