Core wire transition type welding electrode and preparation method thereof

The deposited metal of the welding electrode comprises the following components in percentage by weight: 0.07 to 0.10 percent of C, 0.1 to 0.3 percent of Si, 0.3 to 0.7 percent of Mn, 8.5 to 9.5 percent of Cr, 0.1 to 0.3 percent of V, 2.3 to 3.1 percent of W, 2.7 to 3.5 percent of Co, 0.02 to 0.08 percent of Nb, 0.002 to 0.015 percent of B, 0.005 to 0.018 percent of N, 0.2 to 0.6 percent of Ni, 0.15 to 0.48 percent of Cu, less than or equal to 0.01 percent of S, less than or equal to 0.01 percent of P, less than or equal to 0.02 percent of Al, less than or equal to 0.02 percent of Ti, less than or equal to 0.02 percent of Ta, more than or equal to 0.2 and less than or equal to 1, and less than or equal to 1.2 percent of Mn and Ni. The welding electrode can be suitable for welding heat-resistant steel, meets the requirements for strength, plasticity and toughness, and improves the impact toughness of welding seams. 本发明公开一种焊芯过渡型电焊条，电焊条的熔敷金属包括如下重量百分数的组分：C：0.07-0.10％，Si:0.1-0.3％，Mn：0.3-0.7％，Cr：8.5-9.5％，V：0.1-0.3％