What are the advantages of the dc welder and ac welder? The better one?
The biggest advantage of ac welder is that it is cheaper, and the advantage of dc welder is better than ac welder. Ac welder and dc welder are two types of welder's classification. Electric welding machine is the use of the positive and negative poles in instantaneous short circuit which is caused by high temperature arc to melt the solder on the welding electrode and welding material, cause the contact material combination of equipment. The welding machine can be divided into two types according to the type of output power Advantage of ac welder: cheap price; Disadvantages: high power consumption, low electric load (not easy arc), electric current instability, broken arc, sticky electrode, heavy, welding plain electrode. Dc welding machine advantages: low power consumption, high no-load voltage, current stability, easy arc starting), continuous arc, non-stick electrode, lightweight flexible, suitable for all brands of electrode; Disadvantages: the price is more expensive. Normally, dc motor is better than ac motor.
compared with ac arc welding machine, dc welding arc stability, not easy broken arc and small six, splash. Dc arc welding machine can weld acid and alkaline welding rod, communication can only seven alkaline welding rod, welding machine prices, see you need to how much current welder, relatively speaking, dc welder expensive eight. Very save electricity, dc arc welding machine, is the development trend in the future. Personal recommendations dc welding machine. There is one of the biggest advantages is the dc welding machine is very light, 200 a to ten catties of convenient also move '
The current of the dc welder is not "over zero", it is not easy to break arc, the arc is stable, this is its greatest advantage. The secondary voltage peak of transformer is certain, the dc arc welding machine is higher than the ac welder, it is easier to draw the arc. The dc welder is more than the ac welder, and the cost is slightly higher
