7a52 aluminum alloy was welded by using 5a56 filler with twin wire gas shielded arc welding.
采用5a56焊丝对7a52铝合金进行双丝气体保护焊，对焊接接头的力学性能和显微组织进行了研究。
The principle of a twin wire magnetic phase shifter is analyzed in theory and verified by experiment in this paper.
从理论上分析了双线磁化移相器的原理，并进行了实验验证。
Microstructure and mechanical properties changing rules of 2219 Al-alloy HAZ (heat-affected zone) with twin wire welding were studied using welding thermal simulation method.
采用焊接热模拟试验方法研究了2219铝合金双丝焊热影响区的微观结构和力学性能的变化规律。
It is concluded that the twin wire magnetic phase shifter has a clear advantage over the one wire magnetic phase shifter and that the former's magnetic current is half of the latters.
得出了双线磁化移相器比单线移相器有明显的优越性，其磁化电流是单线移相器的一半。
I decided to send a wire ordering a room with twin beds.
我决定拍电报预定一个有两张单人床的房间。
The twin-wire indirect arc gas-shielded welding is a new welding technology.
双丝间接电弧气体保护焊是一种新的焊接工艺。
Because of the difference of arc circuit, the welding process of twin-wire indirect arc gas shielded welding is more stable than single wire welding.
由于电弧回路结构不同，双丝间接电弧气体保护焊的焊接过程比单丝焊更加稳定。
Twin-wire indirect arc gas shielded welding is a new welding technology.
双丝间接电弧气体保护焊是一种新的焊接方法。
Thus, digital input and display of parameters in twin-wire welding was achieved.
实现了双丝焊参数的数字化输入与显示。
A general design of digital twin-wire welding power supply was selected firstly, and two side-by-side IGBT full bridge converter main circuit structures were designed.
本文首先确定了双丝焊数字化电源的总体方案，设计了两台并行的IGBT全桥逆变主电路的拓扑结构。
The droplet transfer in the twin-wire co-pool gas-shielded metal arc welding(TCGMAW) process greatly affects the welding seam appearance and the welding quality.
双丝共熔池气体保护焊（TCGMAW）的熔滴过渡对焊缝成形以及焊接质量具有重要的影响。
Constant voltage characteristic was also designed according to the character of CO2 twin-wire welding process, and software PI control arithmetic was confirmed.
本研究还根据CO2双丝焊接的特点设计了恒压外特性，并确定了软件PI控制算法。
Results show that the arc was burning between the two wires in twin-wire indirect arc welding, and the arc was still a type of gas discharge in nature.
结果表明，双丝间接电弧气体保护焊在两丝端部形成电弧，其电弧本质仍然是气体放电的一种表现形式。
PLC as a bridge between the PC and basic equipment about the twin-wire SAW, has chosen basic and special module for the lower machine designing.
PLC下位机作为PC上位机和双丝埋弧焊现场设备的桥梁，选取了基本模块和模拟量输入输出特殊模块。
Finally, the technologic experiment of twin-wire welding was done with the equipment of twin-wire pulsed MAG high speed welding power supply and its multi-phase digital synchronic control system.
应用所研制的双丝脉冲mag高速焊多相位数字化协同控制电源装备进行了大量的双丝高速焊工艺试验。
Finally, the technologic experiment of twin-wire welding was done with the equipment of twin-wire pulsed MAG high speed welding power supply and its multi-phase digital synchronic control system.
应用所研制的双丝脉冲mag高速焊多相位数字化协同控制电源装备进行了大量的双丝高速焊工艺试验。
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