Cast iron electrode Description

Due to the high carbon content of cast iron, inhomogeneity, low plasticity, it belongs to the poor weldability of materials. During the welding process is easy to produce white, cracks and holes and other defects, so the cast iron welding welder technical proficiency requirements are also higher, probably can be divided into cast iron welding preheat welding and cold welding two kinds.

In order to ensure the welding results, we recommend using the following welding measures for different materials and casting defects in welding of stoppage time reference and selection.

EZC type gray cast iron welding rod

EZC steel core strong graphite type coating iron electrodes can be AC, DC. Steel core cast iron welding rod coating by adding an appropriate amount of graphite elements, the weld when cooled slowly variable ash cast iron, cooling speed, it will produce white and difficult to process. Great influence on the cooling rate cutting and weld, because the operation process and the general cold welding electrode different, which requires continuous electrode welding, after welding, insulation, so that the weld slow cooling. Gray cast iron and welding every organization, performance, color, substantially similar to the base metal, but due to poor ductility, welding stress relaxation can not engage in the thermal stress cracking performance is poor. Small pieces of less rigid thin-walled parts defects may not preheat welding, the general should be preheated to about 400 and then welding, slow cooling after welding, which can prevent cracks and white.

EZNi type pure nickel cast iron electrode

EZNi type is pure nickel core strong graphite type coating iron electrode, AC and DC, can be all-position welding. When welding, weldment from time to preheat a cast iron cold welding electrode in a better crack resistance, machinability, operating process and mechanical properties of the overall performance of a welding wire, widely used in thin pieces of cast iron welding and machining surfaces .

EZNiFe type pure nickel cast iron electrode

EZNiFe type is pure nickel core strong graphite type coating iron welding, AC and DC, can be all-position welding. When welding, weldment from time to preheat, has high strength, good plasticity, crack out excellent, and with the base metal fusion is good. It can be used for important gray cast iron and ductile iron welding.

EZNiCu nickel-copper cast iron electrode EZNiCu type nickel-copper alloy core is strong graphite cast iron electrode drug skin, AC and DC, can be all-position welding. Process performance and cutting performance and close-type electrode, but due to the larger shrinkage of the weld metal tensile strength is low, is not suitable for large castings stiffness welding. At room temperature or can be preheated to about 300 low-temperature welding. For less demanding strength, plasticity requires good gray cast welding.