Seamless self-protection flux-cored wire for low-nitrogen non-magnetic naval vessel steel welding
A technology of flux-cored welding wire and self-protection, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc. It can solve the problem that it is difficult to realize all-position repair, which must be carried out in the factory building, and there is no disclosure of self-protection flux-cored welding wire Reporting and other problems, to achieve the effect of excellent welding process performance, fast solidification speed and stable arc
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[0037]The preparation method of the seamless self-protected flux-cored welding wire is: filling the flux-cored powder into the O-shaped stainless steel strip, and then undergoing high-frequency welding, diameter reduction and surface ceramic spraying treatment, namely It is a seamless self-shielded flux-cored wire for welding low-nitrogen non-magnetic naval steel.
[0038]The diameter of the seamless self-protected flux-cored welding wire is 1.6 mm.
[0039]The purity of the barium fluoride is ≥99%, and the particle size of the barium fluoride is ≤0.3 mm.
[0040]The purity of the marble is ≥99%, and the particle size of the marble is ≤0.3mm.
[0041]The purity of the aluminum powder is ≥99%, and the particle size of the aluminum powder is ≤0.3mm.
[0042]The Si content of the silicon powder is 74-76wt%, and the particle size of the silicon powder is ≤0.3mm.
[0043]The purity of the manganese powder is ≥99%; the particle size of the manganese powder is ≤0.3mm.
[0044]In the manganese nitride: nitrogen...
Example Embodiment
[0053]Example 1
[0054]A seamless self-protected flux-cored welding wire used for welding low-nitrogen non-magnetic naval steel. The seamless self-protected flux-cored welding wire described in this embodiment is the same as the specific embodiment except for the following.
[0055]The seamless self-protected flux-cored welding wire is composed of 70wt% stainless steel strip and 30wt% flux-cored powder.
[0056]The chemical composition and content of the stainless steel strip are: C is 0.03wt%; Si is 1wt%; Mn is 1.8wt%; Cr is 18wt%; Ni is 8wt%; P is 0.003wt%; S is 0.006 wt%; the balance is Fe and unavoidable impurities.
[0057]The chemical composition and content of the core powder material are: barium fluoride is 40wt%; marble is 5wt%; aluminum powder is 8wt%; silicon powder is 2wt%; manganese powder is 7wt%; manganese nitride is 2wt% %; nickel powder is 10wt%; chromium powder is 5wt%; iron powder is 21wt%.
[0058]The mechanical properties of the weld metal formed by the seamless self-shielded...
Example Embodiment
[0059]Example 2
[0060]A seamless self-protected flux-cored welding wire used for welding low-nitrogen non-magnetic naval steel. The seamless self-protected flux-cored welding wire described in this embodiment is the same as the specific embodiment except for the following.
[0061]The seamless self-protected flux-cored welding wire is composed of 75wt% of stainless steel strip and 25wt% of flux-cored powder.
[0062]The chemical composition and content of the stainless steel strip are: C is 0.08wt%; Si is 0.8wt%; Mn is 1.7wt%; Cr is 20wt%; Ni is 11wt%; P is 0.02wt%; S is 0.02wt%; the balance is Fe and unavoidable impurities.
[0063]The chemical composition and content of the core powder are: 41wt% of barium fluoride; 6wt% of marble; 9wt% of aluminum powder; 3wt% of silicon powder; 8wt% of manganese powder; 3wt% of manganese nitride %; nickel powder is 11wt%; chromium powder is 6wt%; iron powder is 13wt%.
[0064]The mechanical properties of the weld metal formed by the seamless self-shielded fl...
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