electrode core shell weld scale shielding gas welding arc weld pool material MMA PROCESS WELDERS VS ELECTRODE TYPE AVERAGE WELDING CURRENT (A) INVERTER WELDER TECHNOLOGY MMA PROPERTIES Efficiency is the number of minutes in a 10 minute period during which the welder can operate continuously. The device’s efficiency stated in the catalogue is measured at 40°C 10 czas A 2 100A @ 20% 40°C ADVANTAGES DISADVANTAGES • highly practical • limited performance • significant savings • scale removal • no gas cylinders • welding in all positions INVERTER WELDER TRANSFORMER WELDER dimension and weight current stability energy consumption type of electrodes used welding quality control general parameters = positive assessment ADDITIONAL FUNCTIONS ARC FORCE The function shortens the arc while the welding current increases. This makes it easier to ignite the arc when starting welding and to maintain it. This optimises the transfer of drops from the electrode onto the workpiece, preventing the arc from going out when the electrode comes into contact with the workpiece. It is available only in inverter welders. HOT START The function increases the welding current when the arc is ignited in order to warm up the material and the electrode. The function optimises process parameters. It is available in inverter and transformer welders. ANTI-STICK The function limits the welding current by preventing the electrode from sticking to the material being welded during arc ignition and heating up when it sticks. A useful function for inexperienced welders. It is available only in inverter welders. BASIC ELECTRODE RUTILE ELECTRODE CELLULOSE ELECTRODE ELECTRODE FOR STAINLESS STEEL optimum material purity easy ignition Designed for MMA welding of pipes and tanks (deep and „sticky” weld lake) where tightness for gas, water and all types of liquids under pressure is required. Designed for MMA welding of stainless steel welding in all positions stable arc high mechanical quality of welding good aesthetics and smooth welding low costs easy storage DC INWERTER DC INWERTER AC TRANSFORMATOR ELECTRODE DIAMETER TYPE OF ELECTRODE 1,6 2 2,5 3,25 4 5 6 RUTILE 30-55 40-70 50-100 80-130 120-70 150-250 220-370 BASIC 50-75 60-100 70-120 110-150 140-200 190-260 250-320 CELLULOSE 20-45 30-60 40-80 70-120 100-150 140-230 200-300 EFFICIENCY TRANSFORMER VS INVERTER WELDER +/- INPUT OUTPUT ELECTRONIC ADJUSTMENT INPUT RECTIFIER PRIMARY CONVERTER POWER TRANSFORMER OUTPUT RECTIFIER
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