Features: Made with materials for durability Contains a precisely formulated blend of carbon and graphite General purpose gouging electrodes with copper tip Controlled copper plating for better conductivity (for more efficient, cooler performance) Air gouging electrodes are designed for cutting and gouging metals such as carbon steel, stainless steel, copper, aluminum and some superalloys. Applications for these slotted electrodes include manufacturing, maintenance, farms, and repair shops Forms an arc, melts metal, and uses compressed air to blow molten metal out of the grooveTypical chemical composition, 80% graphite and 20% copper The current type is DC and the working polarity is the positive and negative polarity of the DC electrodes Copper arc increases electrical conductivity for more efficient and cooler operation. Carbon arc gouging is the process of creating an arc between the tip of the carbon electrode and the workpiece. The metal melts and a high-velocity airflow flows down the electrode, blowing it out, leaving a clean groove. The process is simple to apply (using the same equipment as MMA welding), has a high-metal removal rate, and allows for tight control of the overcut profile. The electrodes are graphite (carbon) rods with a copper coating to reduce electrode corrosion. The electrode diameter is selected according to the required planing depth and width. The cut can be precisely controlled and the molten metal/slag is kept to a minimum. Because carbon arc gouging does not rely on oxidation, it can be applied to a variety of metals. DC (positive electrode) usually works on steel and stainless steel, but AC is more effective on iron, copper, and nickel alloys. Typical applications include back gouging, removal of surface and internal defects, removal of excess welding metal, and preparation of welding blades. Gouging torches are usually operated by compressed inflatable rope or a separate bottled gas supply. The air supply pressure on the inflatable rope will be up to 100psi, but the bottled supply air pressure is limited to about 35psi. There is no benefit to using higher pressures and flow rates if there is enough airflow to remove the molten metal. Product Parameters:Material: Copper Plated Carbon Fishing RodDiameter: 4-12mm Length: 355mm Capacity: 300 - 400 Amps DC (Constant Current)Optional Size: 4mm x 355mm, 5mm x 355mm, 6mm x 355mm, 7mm x 355mm, 8mm x 355mm, 10mm x 355mm, 12mm x 355mmPackage Included:10*Carbon Rod GougingNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.