在连续大电流区间获得稳定的熔滴过渡形式才是采用无氦混合气体保护实现高熔敷率MAG焊工艺的核心问题。
It is the key to realizing high deposition rates MAG process with non-helium in shielding-gas mixture to acquire stable metal transfer mode in the region of high continuous current.
数字化脉冲MIG焊以其可以在很大电流范围内获得射滴过渡、轴向性好、飞溅小、适合全位置焊等众多优点，在焊接领域中占有重要一席。
Digitized PMIG welding is playing an important role in welding field for its advantages, such as good direction transition, less splashed material, nice figure and wide welding current extent.
该保护方案的灵敏度不受过渡电阻、雷击、故障类型、负荷电流、系统运行方式等因素的影响。
The sensitivity of the proposed protection scheme is not impacted by the factors such as transition resistance, lightning stroke, fault type, load current and operating mode of power system.
解决了连续大电流区间熔滴过渡稳定性问题，实现了无氟混合气体保护的高熔敷率MAG焊工艺。
The stabilization of metal transfer in the range of high continuous current is solved, and the high deposition rates MAG process without helium in shielding-gas mixture is realized.
烧结，冷却高压电机采用起动电流冲击小，过渡平稳的液态电阻降压起动。
Sintering, cooling high-voltage motors used starting current impact of small, smooth transition of liquid resistance buck starter.
单片机协调控制变极性脉冲MIG焊的脉冲电流及电弧极性、电弧电压及熔滴过渡频率，实现了稳定的焊接过程。
Pulse current, arc polarity, arc voltage and metal transfer of variable polarity pulse MIG welding are controlled by 80c196kc coordinately to implement the stable welding procedure.
在RLC回路临界点附近，随着冲击电流峰值的增大，残压波波尾从非振荡衰减过渡到大幅度的过零振荡；
Near the critical point of the RLC-circuit, the residual voltage waveform changes form non-oscillating attenuation mode to distinct across zero oscillating mode when the peak current increases.
不过CO_2焊射滴过渡只能发生在潜弧状态下，产生潜弧的条件为在CO_2气氛中，使用粗焊丝，大电流和低电压的配合参数。
The condition inbwhich the arc is buried are that the parameters such as CO_2 gas, thick wire, high current and low voltage should be used.
以一起变压器副边短路事故为例，分析了变压器副边短路过渡过程中产生过电流、过电压的危害性；介绍为避免类似事故发生应采取的防范措施。
The danger of overcurrent and overvoltage in the transient process of transformer's secondary short circuit is analyzed and countermeasures to avoid such accidents are introduced.
为此，本论文研究了焊丝熔化速度的影响因素，并以高速摄像为手段研究了旋转射流过渡临界电流值的影响因素。
The influencing factors of wire molten rates are studied, and the critical current of rotating spray transfer mode is also studied by using high-speed motion analyzer.
重点论述了熔滴过渡优化控制，对各种不同焊丝的一脉一滴临界电流曲线进行了标定。
The optimal control of the droplet transfer is emphasized in this part, especially the calibration of the curve of the One-Pulse-One-Droplet critical current of various welding wires.
深入细致地分析了谐波、间歇电弧、电流互感器、负荷、过渡电阻等多个因素对故障选线结果的影响，为方案的实用化奠定了基础。
The influences of several factors such as harmonics, intermittent arc grounding, ct, load and fault resistance have been thoroughly analyzed, therefore, it is fundamental work for its application.
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.
该系统根据CO2焊短路过渡特点，对焊接电流进行较为精确的控制，并给出了该系统实际施焊时的电流电压波形。
According to the character of short-circuit transfer, the welding current was accurately controlled by this system, and the real welding voltage and current waveform was given.
该系统根据CO2焊短路过渡特点，对焊接电流进行较为精确的控制，并给出了该系统实际施焊时的电流电压波形。
According to the character of short-circuit transfer, the welding current was accurately controlled by this system, and the real welding voltage and current waveform was given.
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