Self-protection surfacing flux-cored wire and preparation method
A technology of self-protection and welding wire, which is applied in welding equipment, manufacturing tools, welding media, etc., can solve the problems of low strength of self-protection flux-cored welding wire, and achieve the effects of reducing the generation of pores and cracks, good forming effect and improving quality
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Embodiment 1
[0065] A preparation method of self-shielding surfacing welding flux-cored wire, comprising the following steps:
[0066] a. Mixing powder: 3kg chromium carbide, 2kg ferromanganese, 0.8kg tantalum iron, 0.8kg tungsten carbide, 0.2kg calcium hexaboride, 0.62kg graphite, 0.1kg cerium oxide, 1.26kg rare earth magnesium ferrosilicon alloy, 0.4kg fluorspar, 0.5kg silica, 0.1kgLi 2 CO 3 , 0.22kg of marble for mixing;
[0067] b. Filling: Roll the cold-rolled steel strip into a U-shaped section, then fill 10kg of powder mixed in step a into the U-shaped metal groove according to the filling rate of 30%, and then seal and roll;
[0068] c. Drawing and forming: drawing the tubular welding wire sealed in step b, and testing the filling rate after drawing and forming, that is, the flux-cored welding wire obtained from the shielded surfacing.
Embodiment 2
[0070] A preparation method of self-shielding surfacing welding flux-cored wire, comprising the following steps:
[0071] a. Mixing powder: 4kg chromium carbide, 1.5kg ferromanganese, 0.75kg tantalum iron, 0.3kg tungsten carbide, 0.1kg calcium hexaboride, 0.65kg graphite, 0.05kg cerium oxide, 1.3kg rare earth magnesium ferrosilicon , 0.3kg fluorspar, 0.6kg silica, 0.2kgLi 2 CO 3 , 0.25kg of marble for mixing;
[0072] b. Filling: Roll the cold-rolled steel strip into a U-shaped section, then fill 10kg of powder mixed in step a into the U-shaped metal groove according to the filling rate of 45%, and then seal and roll;
[0073] c. Drawing and forming: drawing the tubular welding wire sealed in step b, and testing the filling rate after drawing and forming, that is, the flux-cored welding wire obtained from the shielded surfacing.
Embodiment 3
[0075] A preparation method of self-shielding surfacing welding flux-cored wire, comprising the following steps:
[0076] a. Powder mixing: 3.1kg chromium carbide, 1.6kg ferromanganese, 0.76kg tantalum iron, 0.36kg tungsten carbide, 0.5kg calcium hexaboride, 0.8kg graphite, 0.06kg cerium oxide, 1.5kg rare earth magnesium silicon Iron alloy, 0.5kg fluorspar, 0.4kg silica, 0.12kgLi 2 CO 3 , 0.3kg of marble for mixing;
[0077] b. Filling: Roll the cold-rolled steel strip into a U-shaped section, then fill 10kg of powder mixed in step a into the U-shaped metal groove according to the filling rate of 35%, and then seal and roll;
[0078] c. Drawing and forming: drawing the tubular welding wire sealed in step b, and testing the filling rate after drawing and forming, that is, the flux-cored welding wire obtained from the shielded surfacing.
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