Bath temperature, a direct impact on the quality of     Welding Electrode , bath temperature, bath, hot metal fluidity, easy fusion, but it is too high, the molten iron is easy to under drip, the side welding forming the back of easy to burn through, forming welding aneurysm, forming also difficult to control, and the the fitting plastic decline bending easy to crack. Low bath temperature, the molten pool is smaller darker molten iron, poor mobility, easy to produce incomplete penetration, lack of fusion, slag and other defects.

The bath temperature welding current, electrode diameter, electrode angle, arc burning time is closely related to the relevant factors to take the following measures to control the bath temperature.

1, the welding current and the electrode diameter: the welding current and the electrode diameter is selected in accordance with the spatial position of the weld, the welding level, when the open welding small selection of the welding current and the electrode diameter is large, vertical, horizontal supine position. 12mm tablet docking the downhand seal underlying selection φ3.2mm electrodes, welding current :80-85A, fill, cover surface layer selection φ4.0mm electrode, welding current :165-175A, a reasonable choice of welding current and electrode diameter, easy to control the bath temperature, the weld forming the foundation.

2, shipped Article, the circle shaped shipped Article bath temperature higher than the crescent shipped Article temperature, the crescent shipped Article temperature bath temperature is higher than the the serrated shipped bar in the 12mm flat welded shut underlying serrated shipped Article and the amplitude of the swing and pause on both sides of the groove, the effective control of the bath temperature, melting holes are basically the same size, the the groove roots not form a weld flash and burn through probability decline, lack of penetration have improved, almost plate butt the flat the side welding sided welding forming no longer is difficult.

3, Electrode angle, the electrodes and the angle of the welding direction at 90 degrees, concentrated arc, and the bath temperature is high, the angle is small, the arc dispersed, the bath temperature is low, such as the bottom of the 12mm flat welding seal, welding angle: 50 - 70 degrees, the decrease in the bath temperature, to avoid welding tumor from the back of the produce. In another example, the change in the 12mm the board vertical welding seal underlying electrode, the fittings, the Welding Rod angle of 90-95 degrees, rapid increase in the bath temperature, melt hole smoothly open, relatively flat to the back forming joint control point within concave phenomenon.

4,Arc burning time, internship teaching φ57 × 3.5 tube fixed horizontally and vertically fixed welding, using the broken arc method welding sealed underlying welding arc interruption frequency and arc burning time directly affects the bath temperature, due to thin wall, limited the capacity of the arc heat, slow down off the arc frequency to reduce bath temperature, easy to produce shrinkage, so the arc burning time can only be used to control the bath temperature, bath temperature is too high, melt hole large arc burning time can be reduced, so that the lowering of the bath temperature, then melt hole smaller, the inside of the pipe forming a moderate height, avoid the inside of the pipe weld ultra-high or a welding tumor.