High-strength underwater welding electrodes

Abstract

A high-strength wet welding electrode for underwater welding is composed of the core made of H08E steel wire a coated surficial water-proof layer, and a coated sandwich layer containing rutile (42-54 Wt%), potash feldspar (12-20), talc (6-14), cellulose (4-12), ferromanganese (6-14), Ni powder (0-4), Fe powder (3-12) and Al-Mg alloy (0-4).

Description

technical field [0001] The invention belongs to welding materials, and mainly relates to a high-strength underwater wet welding rod. Background technique [0002] Underwater wet welding has many advantages such as simple equipment, low cost, high construction efficiency, and low cost. Various welding materials have been developed at home and abroad. However, due to the fast cooling rate and low weld performance, its underwater application on high-strength steel is limited. In order to adapt to the underwater welding of high-strength steel, foreign countries have developed corresponding underwater welding materials, such as 7018'S in the United States and Hydroweld FS in the United Kingdom. However, the existing domestic underwater welding materials, such as TS203 and other underwater welding rods, have low strength, only about 400Mpa, which is difficult to meet the underwater welding requirements of high-strength steel, and foreign materials are generally required for engin...

AI Technical Summary

Problems solved by technology

However, the existing domestic underwater welding materials, such as TS203 and other underwater welding rods, have low strength, only about 400Mpa, which is difficult to meet the underwater welding requirements of high-strength steel, and foreign materials are generally required for engineering.