电焊之原理和使用法电焊之原理——使两同类之金属物,在镕解状态下以焊条为填充物接连起来。其法即用电流经过两被焊物,同时另一极经过焊条,使其相交而发生电弧(须在适当之距离),在发生电弧时,同时发出大量高热使焊条融成液体。在这时候,两被焊物与焊条接近部份受到高热部份而融化,所以焊条之液体把二被焊物连接一起。在开始电焊前,须先将电路接好,接法乃将被焊物接连于电焊机或电焊方棚之一极,如在交流电 The principle and use of welding The principle of welding - so that the two similar types of metal objects, in the state of dissolution in order to weld the filler for the connection. The method is to use current through the two to be welded, while the other pole through the electrode, so that it intersects the arc (to be at a suitable distance), in the event of an arc, while issuing a lot of heat so that the electrodes melt into liquid. At this time, the two were close to the welding material and the electrode by the high heat part of the melting, so the electrode of the liquid two to be welded together. Before starting the welding, the circuit must be connected first, the connection is to be solder connected to the welding machine or welding shed one pole, such as in the alternating current