This controller is based on single - chip microcomputer at89c51 , and it can realize automatic welding , line voltage compensation , welding current and voltage display through the combining of constant current and voltage supply control with varied sets of standard parameter storages , fault self - diagnostic programs and system self - protection ability
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Arc welding technologies in japan have been advanced steadily since the time when an application of covered electrodes was first examined in the shipbuilding industry about 90 years ago . the history of the arc welding technology has always been the history of the pursuit of higher " efficiency and speed " of welding processes welding materials , originally started with covered electrodes �� have been developed into more efficient submerged arc welding materials and gas ? shielded arc welding materials with which automatic welding and robotic welding can easily be conducted . the gas ? shielded arc welding materials can be classified mainly into solid wires and flux ? cored wires ( fcws ) , and of these wires �� fcw has been increasing in uses year by year because of its excellent workability and efficiency . this article describes the recent trends in the development of fcws which now hold the major position in the welding materials . a special focus is put on the fcws for carbon steels
