信阳干式变压器：交流电焊机的用途和特点

交流电焊机的用途和特点 　　

交流电焊机实际上是一台特殊的降压信阳干式变压器，就是交流焊接信阳干式变压器或称为电焊信阳干式变压器。通常制成单相的，冷却方式为空气自冷，是断续工作的，从空载到短路，又从姐路到空载，负载电流急剧地变化普。
电焊信阳干式变压器要求负载回路的电抗要很大，以限制短路电流和稳定电弧。增大电抗一般有下述三种方法供选择:
1)外加电抗器。
2)信阳干式变压器与电抗器合为一体。
3)加大信阳干式变压器的漏抗。
电焊可分为对焊、缝焊、点焊或弧焊，因此，就有相应的信阳干式变压器。在这几种信阳干式变压器中.二次电压都很低，一般不超过几十伏。
信阳干式变压器接入电源，通过电抗器，供给焊件的电流，可改变电抗器磁路中的空隙来调节.调节时可转动旋转螺杆。当气隙变大、磁阻变大、磁通减小、感抗也减小时。电路内的电流增加.相反则电焊电流减小。
为了满足电弧焊接的要求，电焊机必须具有下列特点：
1)无载时，要求具有足够的引弧电压(约为60—80V)。
2〕有负载时，电压就下降.在额定负载时，约为30V。
3)二次侧短路时(焊条碰在工件上).短路电流不致过大。
4)调节方便，效率高，运行安全可靠.
5)造价低，运愉方便。

Uses and characteristics of the AC Welder

AC welding machine is actually a special step-down transformers, AC welding transformer, or the welding transformer. Usually made ??of a single-phase cooling mode, since cold air is intermittent work, from no load to short circuit, the from sister Road to the no-load, the load current varies dramatically Cape.
Welding transformer load circuit of the electrical anti-To, to limit the short circuit current and stable arc. Increase the reactance generally have the following three methods are available:
1) plus the reactor.
2) transformers and reactors into one.
3) increase the leakage reactance of the transformer.
Welding can be divided into welding, seam welding, spot welding or arc welding, therefore, there is a corresponding transformer. In these types of transformer secondary voltage is very low, generally no more than tens of volts.
The transformer is plugged in, through the reactor, the supply of welding current can change the gap in the magnetic circuit of the reactor to adjust to adjust the rotary screw. When the larger air gap, the reluctance larger flux decreases, the inductance is also reduced. Circuit current. Contrary welding current is reduced.
In order to meet the requirements of arc welding, the welding machine must have the following characteristics:
企业账号：1611 0032 092 00213 0861) no load, the arc voltage (about 60-80V).
2] load, the voltage drops. Rated load, about 30V.
3) the secondary short-circuit (electrode against the workpiece). Short-circuit current is not too large.
4) regulation, high efficiency, safe a传 真：0635-8888109nd reliable operation.
5) low cost, shipped Discovery convenient.

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