High-ductility electrogas welding self-shielded flux-cored wire
A technology of flux-cored welding wire and electric welding, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., and can solve the problems of large heat input, poor welding process performance, and poor impact toughness of weld metal
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[0040] The present invention is a combination of steel strip and welding flux, and the welding core adopts carbon steel strip with low P and S. The components of the steel strip are shown in Table 1:
[0041] Table 1: Steel strip composition (based on steel strip, wt%)
[0042] C
Si
Mn
Al
0.01-0.055
0.01-0.03
0.10-0.30
0.005~0.060
P
S
Fe
0.007-0.015
0.007-0.015
Margin
[0043] The welding flux accounts for 20% to 30% of the total weight of the welding wire. The flux composition is shown in Table 2 (weight percentage):
[0044] Table 2: Soldering flux composition (based on the weight in the welding wire, wt%)
[0045]
[0046] In order to better understand the present invention, the following examples ①~⑦ are used to further illustrate, but the present invention is not limited to the following embodiments:
[0047] The general manufacturing process in the welding wire production industry is adopted. The weight percentage of welding flux is shown in Table 3, and the compos...
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Abstract
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