Submerged arc welding machine is divided into two categories: automatic welding machine and semi-automatic welding machine. Semi-automatic submerged arc welding machine is composed of welding trolley, submerged arc welding machine, welding trolley can walk back and forth, speed adjustable. Semi-automatic submerged arc welding machine's main functions are:
(1) the wire through the wire guide tube continuously into the arc area;
(2) transmission of the welding current;
(3) control of the welding start and stop;
(4) to the weld area paved with the application of flux.
So it mainly consists of wire feeding mechanism, control box, welding handle with hose and welding power supply. Semi-automatic submerged arc welding machine has both the advantages of automatic submerged arc welding and manual arc welding mobility. In difficult to realize automatic welding of the workpiece (such as the center line of the irregular weld, short weld, welding space is narrow workpiece, etc.), can be used to weld this machine. Automatic submerged arc welding machine is composed of submerged arc welding machine, auxiliary equipment, can achieve automatic welding, automatic submerged arc welding machine's main functions are:
(1) continuously feeding the welding zone into the wire;
(2) transmission of the welding current;
(3) so that the arc along the seams;
(4) control of the arc's main parameters;
( 5) controlling the start and stop of welding;
(6) spreading flux to the welding zone;
(7) adjusting the position of the wire end before welding.
Automatic submerged arc welding machine in accordance with the needs of the work, made in different forms. Common are: welding car type, hanging type, machine tool type, cantilever type, gantry type and so on.