high hardness and high wear resistance welding electrode
The electrode consists of a core and a coating. The electrode is the coating (coating) uniformly and centrally applied on the core outside the metal welding core. Different types of electrode,the core is also different. The welding core is the metal core of the electrode. In order to ensure the quality and performance of the weld, there are strict regulations on the content of various metal
elements in the welding core, especially on the content of harmful impurities (such as sulfur, phosphorus, etc.), there should be strict restrictions, which are better than the base metal. The coated metal core of the electrode is called the weld core. The weld core is generally a steel wire with a certain length and diameter. During welding, the welding core has two functions: one is to conduct welding current and generate electric arc to convert electric energy into heat energy; the other is to melt the welding core itself as filler metal and the liquid base metal to fuse to form a weld.
Welding core and coating.
A core is a wire of a certain diameter and length. The role of welding core; One is to act as an electrode and produce electric arc; Second,after melting as a filler metal, and the melted base metal together to form a weld. The chemical composition of the weld core will directly affect the quality of the weld, so the weld core is specially smelted by steel mills. Carbon structure steel welding rod is commonlyused in our country. The welding core brand is H08 and H08A, with the average carbon content of 0.08%(A stands for high quality).
The diameter of the electrode is expressed by the diameter of the welding core.
The commonly used diameter is 3.2~6mm and the length is 350~450mm.
Coating on the outside of the welding core, is made of various minerals (such as marble, fluorite, etc.), iron alloy and binder and other raw materials according to a certain proportion of preparation. The main function of the coating is to make the arc ignite easily and stabilize the arc combustion; A large amount of gas and slag is formed to protect the metal of the molten pool from oxidation. Remove harmful impurities (such as oxygen, hydrogen, sulfur, phosphorus, etc.) and add alloying elements to improve the mechanical properties of the weld
The electrode can be used as electrode for conducting welding current, and as filler metal for welding seam and protection material for welding pool.
