What specification should be used for the three - step steel electroslag pressure welding electrode?
If the level of 32 thread steel bar is HRB335 (original two grade steel bar), E4303 shall be used for bar welding and lap weldingGrade HRB400 (original three grade steel), bar welding, lap welding using E5003Grade HRB335 (original two grade steel), groove welding using E5003Grade HRB400 (original three grade steel), groove welding using E5503
Welding wire with diameter 3mm
1, three grade rebar electroslag welding electrode with 3mm diameter wire can be.2, screw steel is known as hot rolled ribbed bar. Ordinary hot rolled steel bars are made up of HRB and the minimum yield point of the brand. H, R, and B are the first letters in English for hot-rolled (Hotrolled), ribbed (Ribbed) and reinforced (Bars) three words. Hot rolled ribbed bar is divided into two levels, HRB335 (old No. 20MnSi), three HRB400 (20MnSiV, 20MnSiNb, old No. 20Mnti), four grade HRB500 three grade.3, the electrode (coveredelectrode), is the metal coating in the welding core (coating), uniform centripetal pressure applied to core. The core metal cored electrode, in order to ensure the quality and performance of the weld, there are strict rules on the contents of metal elements in the core, especially for harmful impurities (such as sulfur, phosphorus content, etc.) should be strictly restricted, better than the base metal. The electrode consists of two cores and coating composition. The different cores are also different. The core components directly affect the composition and properties of the weld metal, so the harmful elements in the welding core to as little as possible.
