Open AccessTechnology and equipment for underwater wet welding and cutting of high strength steel arctic structures using flux-cored wires*
Author(s) -
S. G. Parshin,
A.M. Levchenko
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/539/1/012132
Subject(s) - welding , materials science , underwater , flux (metallurgy) , metallurgy , composite material , geology , oceanography
The paper describes the experimental findings of underwater wet welding and cutting of API X70 pipe steel and plates with the use of the following flux-cored wires: TiO 2 -CaF 2 ; Fe 2 O 3 -TiO 2 and Fe 2 O 3 -TiO 2 -SiO 2 . For cutting the cored wire with a diameter of 2 mm based on salts of iron and alkali metals was developed. The best weld properties have been achieved during the underwater welding with fluoride flux-cored wires with TiO 2 -CaF 2 system, which provides the suitable micro structure of the weld, high solidity of deposited metal and mechanical properties of the weld. The use of flux-cored wire improves a quality of underwater wet cutting of steel plates with thickness up to 8 mm.