Man-made static magnetic fields are generated wherever DC currents are used, such as in electric trains or industrial processes such as aluminium production and in gas welding.
在使用直流电的地方即产生人为的静电磁场，例如在电车或诸如铝生产和气焊等工业操作程序中。
The control principle and software of the microcomputer controller used in DC impulse seam welding are introduced in this paper.
本文介绍了直流冲击波缝焊微机控制器的控制原理及软件系统。
DC drive control module can function as increasing efficiency and accuracy and reducing error rates in tube-welding drive system. Details of the module are described.
直流传动控制模块在焊管机组拖动中，具有提高效率和准确度以及降低差错率等作用，介绍了使用该控制模块的有关问题。
The products of HJ electric are IGBT inverter DC arc welders, IGBT inverter DC air plasma cutting machine, resistance welders, welding wire feeder and other welding and cutting equipment.
瀚金电气的产品包括：IGBT逆变直流弧焊机，IGBT逆变直流空气等离子切割机，电阻焊机，焊接送丝机等焊接与切割设备。
Square wave AC, or switched DC, power sources are particularly attractive for welding aluminium.
方波交流、直流电源焊接铝特别具有吸引力。
When electrode negative ratio is zero, which is using MIG welding with DC ami welding wire being positive polarity, weld penetration is maximum , wire melting speed and deposition rate are minimum;
当负极性比率等于零即直流且焊丝为正极性的MIG焊时，其焊缝熔深最大，焊丝熔化系数最小，熔敷速度最小；
When electrode negative ratio is zero, which is using MIG welding with DC ami welding wire being positive polarity, weld penetration is maximum , wire melting speed and deposition rate are minimum;
当负极性比率等于零即直流且焊丝为正极性的MIG焊时，其焊缝熔深最大，焊丝熔化系数最小，熔敷速度最小；
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