Nickel plated welding rod and manufacturing method thereof

Abstract

The invention discloses a nickel plated welding rod and a manufacturing method thereof. The nickel plated welding rod comprises a metal welding core and a covering, wherein the metal welding core comprises a working part and a clamping part which are fixedly connected; the covering is coated on the outer surface of the working part; the working part is an iron alloy wire; the clamping part is a nickel plated aluminum wire; the top of the working part is conical; the vertex angle of the taper is 20-50 degrees; the mass ratio of iron, silicon, manganese and chromium in the iron alloy wire is (4-6):(1-3):(0.5-1.5):(0.3-0.8). According to the method, the covering is coated after the working part and the clamping part are subjected to friction welding. The components of the iron alloy wire are rational, and the quality of a weld joint can be improved; remaining of a discharge electrode on the weld joint is avoided by using different materials.

Description

technical field [0001] The invention relates to an electrode used for arc welding, in particular to a nickel-plated electrode and a manufacturing method thereof. Background technique [0002] Electrode arc welding is the most widely used welding method in industrial production. It belongs to gas-slag combined protection metal arc welding. Its principle is to use the heat generated by arc discharge to melt the electrode and the workpiece and form a weld after condensation , so as to obtain a firm bonding interface between the workpieces. It has the advantages of good flexibility, convenient operation, low assembly requirements before welding, and simple equipment. Therefore, although automatic welding equipment such as gas shielded welding machines and welding robots have been widely used in steel structure manufacturing, traditional arc welding with electrodes is still required for manual welding in some complex welds. [0003] The tool usually used in manual arc welding i...

AI Technical Summary

Problems solved by technology

[0004] In complex large-scale steel structures such as cranes, offshore drilling platforms and ships, the special position of some welds makes their welding and inspection very difficult

If a hidden weld has just been completed when the working part of the electrode burns out, the welder may simply release the clamp, leaving the electrode tip behind and solidifying at the end of the weld