High-cellulose welding electrode

Abstract

A high-cellulose welding electrode is disclosed, and it features that its coating contains 15 components including pyroceram, starch, bamboo powder, rutile, titanium oxide powder, etc.. The low-modulus water glass with high K / Na ratio is used as adhesive. Its advantages include high mechanical performance, no air pores in welded seam, and high low-temp. toughness.

Description

technical field [0001] The invention relates to a high-cellulose welding rod used for pipeline welding, which belongs to the technical field of welding. Background technique [0002] In recent years, the high-cellulose type electrodes researched and developed in China are E4310 (should comply with the national standard GB / T5117-1995) and E5510 (should comply with the national standard GB / T5118-1995). Poor operability, red electrode coating, pores in the weld seam and low low-temperature impact toughness, and has not yet formed mass production, so most of them rely on imports to meet domestic needs. Firstly, the cost is high, and secondly, the impact toughness of welding rods of famous foreign brands needs to be further improved. [0003] People such as Zhang Qinghui disclosed the performance index of a kind of E4310 cellulose electrode in " the research of improved E4310 cellulose electrode " (Welding Technology, 2001, (4): 43-44), accord with national standard GB / T5117-199...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-cellulose type electrode to overcome the defects of the existing high-cellulose type electrode, such as poor process operability, red coating of the electrode, and pores in the weld seam, and further improve low-temperature impact toughness.