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。
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。
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。
A: Start by using a weld process that provides more control over heat input: short circuit transfer GMAW (" short arc "), pulsed GMAW, GTAW and pulsed GTAW.
答：首先用焊接过程提供更多控制热输入：短路转让的GMAW(“短弧”)脉冲gmaw焊接、氩弧焊和脉冲gtaw。
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 order to study metal transfer characteristics during dual bypass GMAW (DB-GMAW) process, many kinds of edge extraction algorithms were used to process the necking images of DB-GMAW metal transfer.
为了对多弧旁路gmaw (DB - GMAW)焊接过程中的熔滴过渡特征信息深入研究提供条件，对该种焊接方法下熔滴过渡图像颈缩部分边缘提取算法进行了研究。
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。
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。
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