The main purpose electrode grades Copper rod copper rod for the T107, has a good atmosphere and sea water corrosion resistance, the main conductive copper weld, copper tube and other structures. Silicon bronze rod silicon bronze welding rod for the T207, of inorganic acids (except nitric acid), organic acids, corrosion resistance, suitable for copper, silicon bronze and brass welding. Phosphor bronze phosphor bronze Welding Rods for the T227, a certain strength, ductility, toughness, wear resistance and corrosion resistance, suitable for copper, brass, phosphor bronze, such as welding. Aluminum manganese bronze manganese bronze rod T237 aluminum rod, wear and corrosion of the fine, widely used in copper alloys, aluminum bronze and copper, cast iron welding. High manganese electrode T247 T247 aluminum bronze aluminum bronze to a high manganese welding-core, low-hydrogen coating of copper alloys. Excellent wear resistance and corrosion resistance. DC power supply, then the positive electrode. Copper-nickel alloy electrode T302 T302 Cu70Ni30 titanium calcium type of copper-nickel alloy electrode can be AC-DC dual-use, all-position welding. Good Welding Electrode , weld metal with good ductility and crack resistance.
① consider the weld metal mechanical properties and chemical composition For normal structural steel, weld metal and often require the base material of equal strength, tensile strength of weld metal should be used is equal to or slightly higher than the base metal electrode. For alloy steel, sometimes also called the base metal alloy composition and the same or close. In welded structures rigid, high stress joints, weld cracks easily under adverse conditions, consider choosing a low intensity than the base metal electrode. When the base material of carbon, sulfur, phosphorus and other elements at high levels, prone to weld cracking, good crack resistance should be used in basic low-hydrogen electrodes. ② consider the performance of welded components and working conditions with To withstand load and impact load on the weldment, in addition to meet the strength requirements, should primarily ensure that the weld metal has a high impact toughness and plasticity, the choice of plastic, the toughness index higher low hydrogen type electrode. Contact with corrosive media weldment should be based on the nature of media use and corrosion characteristics of stainless steel or other corrosion-resistant type electrode welding. In the heat, cold, wear or other special work under conditions of welded parts, should use the appropriate heat-resistant steel, cold steel, welding, or other special purpose Welding Rods. ③ consider the structural characteristics of welding and stress conditions Complex shape of the structure, rigidity of the Heavy welded, the welding process produces a large internal stress, easy to weld cracks, good crack resistance should be used in basic low hydrogen electrodes. Of discontinuity large, difficult to clean up the welding parts welding parts, should be used for rust, oxide, oil is not sensitive to the acidity of electrodes. Conditions imposed can not turn on the weldment should be used for all position Welding Electrode. ④ construction conditions and economic considerations Product to meet the performance requirements of the case, should be used in electrode technology and good acidity. In small or poorly ventilated situations, should be used in acidic or low dust welding electrode. The structure of the large amount of welding work, conditions should maximize the use of high efficiency electrodes, such as iron electrodes, welding and other high-efficiency gravity, or use welding vertical down welding of the underlying class-specific electrode, in order to improve welding productivity.