Flux / electrode type
Electrode medicine chemical composition of the skin arc stability, penetration, metal deposition rates and positioning capabilities have a significant impact. Electrode can be divided into three categories:
Cellulose type electrode; titanium dioxide coated electrodes; alkaline electrode.
1, cellulose type electrode of drug skin contains a lot of cellulose, which is characterized by arc melting deep friction deformation speed, which increases the welding speed. However, due to rough and weld deposits of slag and liquid mixed together, so the slag is very difficult. This electrode can be used in any position, but also because of the elevated pipe ('stovepipe' welding technique) in the use of the familiar.
Features:
Able to form in all positions deep penetration;
For downward vertical position Welding Electrodes;
Good mechanical properties;
Produce large amounts of hydrogen - are caused by the heat-affected zone (Haz) the risk of cracks.
2, titanium dioxide electrodes skin contains large amounts of drugs dioxide (rutile). Dioxide so that arc starting, smooth operation and reduced arc spatter arc easier. This common electrode has excellent welding characteristics. In AC or DC, they can be used for all welding positions, especially for horizontal angle / vertical angular position of the joint welding.
Features:
Appropriate weld metal mechanical properties;
Viscous slag can form a good bead shape;
Positioning may have the flow of welding slag (fluoride);
Easy to remove slag.
3, the basic electrode skin contains large amounts of drug calcium carbonate (limestone), calcium fluoride (fluorite). This makes the slag type electrode of titanium dioxide slag than more mobile, this is a help up welding and soldering rapid cooling method of Yang. The electrodes used for welding medium and large-scale structure, requires a high welding quality, good mechanical properties and resistance to cracking capacity (excessive binding will crack).
Features:
Low-hydrogen weld metal;
Demanding welding current / speed;
Poor weld shape (curved surface profile, rough);
Slag removal difficult;
Metal powder electrode containing a metal powder coating increases, to allow the welding current maximum allowable current. Thus, drug-free iron electrode in the skin compared to metal powder metal electrode deposition speed and efficiency (metal cladding ratio) has increased in the slag is also very easy to remove. As the deposition speed, is mainly used for flat iron welding electrodes, welding and vertical welding cross. Titanium dioxide electrode and no significant alkaline arc welding characteristics, the intensity of the smaller arc, reducing the weld penetration.

Power supply
Electrodes can be AC ​​or DC power supply used. Not all DC electrodes can be used in AC, but AC electrodes can usually be used in DC power supply.
Welding current
The choice depends on the welding current electrode size, manufacturers recommend that users of normal operating range and welding current. Choose the standard operating range of electrode sizes as shown on the left. According to experiences, current standards are based electrode is about 40A/mm (diameter). Therefore, the electrode with a diameter of 4mm is the preferred current size of the 160A, but the actual operating range is 140 ~ 180A.

keywords: Nickel Alloy Welding Wire