CHE422 carbon steel electrode with titanium calcium type coating with excellent welding performance, arc stability and weld bead appearance, less spatter, AC and DC. All-position welding. Uses: Used for general carbon steel structure and intensity of lower-grade low alloy steel, such as 09Mn2 and so on. CHE426 low hydrogen potassium type coating Carbon Steel Electrodewith good mechanical properties and crack resistance, AC and DC, all-position welding. Uses: Used for welding important carbon and low alloy steel. The chemical composition of deposited metal (%). CHE427 low hydrogen sodium type drug skin Carbon Steel Welding Electrode, using a DC power supply, can be all-position welding, the weld metal has excellent mechanical properties and crack resistance. Uses: Used for welding carbon steel and low alloy steel. CHE502 carbon steel electrode with titanium calcium type coating, both AC and DC can be all-position welding. Uses: mainly used for welding 16Mn and low alloy steel structure. CHE507 low hydrogen sodium type coating carbon steel welding rod, use: Suitable for carbon steel or low alloy steel such as 16Mn and ship with A, B, D, E grade steel construction of the main components of the ship, as well as boilers, pressure vessels, piping important steel welding. CHE426R low hydrogen potassium type coating pressure vessel steel and carbon steel electrode with good mechanical properties and crack resistance, AC and DC, can be all-position welding. Uses: used for pressure vessels and pressure piping carbon steel and strength-based, heat-resistant, low-temperature low-alloy steel welding. CHE427R low hydrogen sodium type coating pressure vessel steel and carbon steel electrode, using a DC power supply can be all-position welding, the deposited metal has excellent mechanical properties and crack resistance. Uses: used in pressure vessels, pressure piping between the welding of carbon steel and carbon steel, and strength-based, heat-resistant, low temperature low alloy steel.

Cast iron electrode due to the high carbon content, and inhomogeneity, low intensity, the plastic is extremely poor and belong to the weldability of materials, welding process is apt to crack; the cooling rate after welding fast, easy to produce white tissue, resulting in the difficulty of cutting . Welding and repair welding of cast iron, to achieve more satisfactory results, you must pay attention to the third of material, the seventh of the process, not only to select the electrode, and a suitable welding method is particularly important. Recommended the following welding processes, as the cast iron welding and repair welding of reference: 1, first clear the welded parts of clay, sand, water, rust and other dirt; a long period of high temperature steam environment, iron castings, but also to remove the surface carbon-poor layer and the oxide layer. 2, cast iron Welding Rod according to the shape of the welded parts, defect type, and the groove, playing only the hole and weld pool shape, and other preparedness measures. Need cold welding of the workpiece, the first warm-up about 500-600 ℃, the choice of the appropriate current, continuous welding, the welding process, always preheat temperature, immediately after welding to cover asbestos powder insulation material, allowed slow cooling to improve the crack resistance and processing properties. For cold welding workpiece, to prevent the base metal to melt too much, reduce the chilling tendency, to prevent excessive heat concentrated, resulting in excessive stress, should be adopted in the small current, short-arc, Welding Electrodes the length of the narrow path welding (each bead is generally not more than 50mm). Relaxation stress hammering the weld immediately after welding to prevent cracking, cast iron electrode when the temperature dropped to below 60 ℃ and then welding a. 5, Crater Note crater filled to prevent closing the arc at the crack.