LNG structure as well as nickel-based welding rod for marine 9Ni steel welding, and preparation method thereof
A nickel-based electrode, marine technology, applied in welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problem of less application, and achieve the effect of small spatter, smooth weld bead and good manufacturability
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Embodiment 1
[0028] The preparation method of the nickel-based welding rod of LNG structure and marine 9Ni steel welding, comprises the following steps:
[0029] Step 1. Dosing according to the following components and percentages: C: ≤0.10%, Si: ≤0.10%, Mn: ≤0.10%, Cu: ≤0.10%, Mg: ≤0.10%, S≤0.005%, Fe: ≤0.40%, Ni+Co: ≥99.5%, after melting all the components, forging, rolling, drawing, and shredding, to obtain nickel-based welding core for use;
[0030] Step 2, according to the components and percentage content in Table 2 as the target ratio, calculate the marble, fluorite, rutile, α-Al to be added in Example 1 2 o 3 , zircon sand, carboxymethyl cellulose, potassium carbonate, metal chromium powder, metal molybdenum powder, metal manganese, ferrosilicon, ferromolybdenum, and ferroniobium, and weigh each material according to the calculation results; mix and dry mix evenly Finally, first add 2.5% water of the total weight of the material, pre-wet mix for 2~3 minutes, then add a binder wit...
Embodiment 2
[0032] The preparation method of the nickel-base welding rod of LNG structure and marine 9Ni steel welding, the preparation and chemical composition of welding core in step 1 are the same as embodiment 1, and the weight percentage content of coating powder is as shown in table 2; All the other features are the same as embodiment 1 .
Embodiment 3
[0034] The preparation method of the nickel-based welding rod of LNG structure and marine 9Ni steel welding, the preparation and chemical composition of welding core in step 1 are the same as embodiment 1 and embodiment 2, and the weight percentage content of coating powder is as shown in table 2; Other features With embodiment 1.
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