Electrode is a surface coated with a coating of the melting electrode.
The intermediate electrode is the core, the outside is a layer of coating. General welding rod arc end a chamfer, coating is removing a part, revealing cores end, some electrode lead arc end coated with striking arc agent, make arc more easily.
In the electric welding work, between cores and workpiece by arc melting into the weld and produce high temperature. Is the core and the filler metal electrode. Used for wire cores are made of carbon / low alloy steel and stainless steel 3.
The core components will directly affect the composition and properties of deposited metal,The core layer is wrapped on the surface of the coating, also known as coating.
The electrode is ore powder, iron alloy powder, organic matter and chemical products raw materials according to a certain proportion pressure coated cores on the surface of a coating.
It plays a very important role in welding: 1 mechanical protection; 2 metallurgical treatment; 3 to improve the welding process performance; 4 penetration and gold.