Low-hydrogen electrode with favorable low-temperature impact toughness
A low-temperature impact toughness, low-hydrogen electrode technology, applied in welding media, manufacturing tools, welding equipment, etc., can solve the problems of electrode arc instability, welding defects, uneven slag coverage, etc., and achieve good welding process performance and low temperature brittleness Reduce and improve the effect of low temperature impact toughness
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Embodiment 1
[0014] A low-hydrogen welding rod, using H08A wire rod as the welding core material, the mass percentage of each component in the coating of the welding rod is:
[0015] 40% marble, 16% fluorite, 6% silicon powder, 6% ferromanganese, 7% ferrosilicon, 9% ferrotitanium, 5% rutile, 2% mica, 8% iron powder, and 1% magnesium powder. The particle size of the fluorite powder is 100% over 100 mesh.
[0016] The mass component content and particle size requirements of each component in the coating of the electrode are:
[0017] Marble: CaCO 3 ≥95%, S≤0.020%, P≤0.010%, 100% passing mesh particle size is 60 mesh; Fluorite: CaF 2 ≥95%, SiO 2 ≤4.5%, S≤0.020%, P≤0.030%, 100% passing mesh particle size is 100 mesh; silicon powder: SiO 2 ≥98%, Al 2 o 3 ≤1.0%, S≤0.010%, P≤0.015%, 100% passing mesh particle size is 250 mesh; ferromanganese: Mn: 78~85%, C≤1.5%, S≤0.020%, P≤0.020%, 100 % The particle size of passing mesh is 60 mesh; ferrosilicon: Si: 43.5~46%, Mn≤0.7%, S≤0.02%, P≤0.040%, 1...
Embodiment 2
[0019] A low-hydrogen electrode, its components and the mass percentage ratio of each component are the same as in Example 1, except that the particle size of fluorite powder is 100% and over 120 mesh.
Embodiment 3
[0021] A low-hydrogen welding rod, its components and the mass percentage ratio of each component are the same as in Example 1, except that the particle size of fluorite powder is 100% and exceeds 150 mesh.
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