Explanation

The strip shaped melting electrode coated with flux used in arc welding consists of welding core and flux coating. The welding core is made of weld metallic materials, which is melted into weld filler metal during weld. The coating is composed of various mineral powders, metal powders, flux powders and adhesive. It is coated on the surface of the welding core through the pressure coating process. Some metals in the coating can also enter the weld and become part of the weld metal. According to the chemical properties of electrode coating, it can be mainly divided into acidic electrode and basic welding rod; According to the composition of the coating, it can be divided into eight types: titanium type, calcium titanium type, ilmenite type, iron oxide type, cellulose type (organic matter greater than 15%), low hydrogen type (without organic matter), graphite type (used for cast iron weld) and base type (composed of chlorine salt and fluoride salt, and the corresponding electrode used for weld of aluminum and aluminum alloy is called titanium type electrode, calcium titanium type electrode, ilmenite type electrode, iron oxide type electrode, cellulose type electrode, low hydrogen type electrode, graphite type cast iron electrode, and base type aluminum welding rod.

Classification