Anti-erosion and anti-wear stainless steel welding electrode for hydroelectric generating set repairing and preparation method of anti-erosion and anti-wear stainless steel welding electrode
A hydroelectric unit, stainless steel technology, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problem of reducing corrosion resistance and wear resistance of weld seams, unsuitable for repairing hydroelectric units, mismatching of mechanics and corrosion resistance, etc. problems, to achieve the effect of less redness and cracking, the best recovery of operating performance, and stable arc
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Embodiment 1
[0096] The welding core composition is (wt%): C: 0.010%, Mn: 0.18%, Si: 0.12%, Cr: 12.14%, Ni: 4.25%, Cu: 0.023%, Mo: 0.47%, S: 0.016%, P: 0.017%, the balance is Fe and essential impurities, and the welding core is chromium-nickel-molybdenum alloy welding core.
[0097] Take the drug skin, the weight of each component in the drug skin is as follows: 9.0 kg of marble containing CaCO3 98.40%; 2 97.30% Fluorite 2.0kg; Contains SiO 2 63.6%, Al 2 o 3 17.3%, K 2 O+Na 2 O 16.0% feldspar powder 8.0kg; containing TiO 2 12.0kg of 96.5% rutile; 1.0kg of electrolytic manganese containing Mn99.7%; 2.0kg of silicon dioxide containing Si45.5%; 0.4kg of ferromolybdenum containing Mo57.3%; metal nickel powder containing Ni99.8% 0.6kg; 4.5kg of metallic chromium containing Cr99.1%.
[0098] After mixing the above powder evenly, add 6.8 kg of potassium sodium water glass with a concentration of 40°-45° and mix evenly, then send it into the plodder to wrap it on the welding core, and then ...
Embodiment 2
[0102] This embodiment is all the same as Example 1 except that the weights of the ingredients in the drug skin are different.
[0103] The weight of each component in the medicine skin in the present embodiment is as follows: 10.0kg of marble containing 98.40% of CaCO3; 3.5kg of fluorite containing 97.30% of CaF2; 3.0kg stone powder; 8.0kg rutile containing TiO296.5%; 0.5kg electrolytic manganese containing Mn99.7%; 1.0kg silicon dioxide containing Si45.5%; 0.2kg ferromolybdenum containing Mo57.3%; containing Ni99 .8% metallic nickel powder 0.8kg; 6.0kg metallic chromium containing Cr99.1%.
[0104] The obtained rutile stainless steel electrode 2 used for repairing corrosion and wear resistance of hydropower units was subjected to welding experiments, and its deposited metal composition: C: 0.032%, Mn: 0.50%, Si: 0.15%, Cr: 13.80%, Ni : 4.85%, Mo: 0.45%, Cu: 0.025%, S: 0.009%, P: 0.015%, and the balance is unavoidable impurities.
[0105] Deposited metal heat treatment 610℃...
Embodiment 3
[0107] This embodiment is all the same as Example 1 except that the weights of the ingredients in the drug skin are different.
[0108] The weight of each component in the drug skin in the present embodiment is as follows: 8.0kg of marble containing 98.40% of CaCO3; 0.5kg of fluorite containing 97.30% of CaF2; 5.0kg stone powder; 16.0kg rutile containing 96.5% TiO2; 1.5kg electrolytic manganese containing 99.7% Mn; 1.5kg silicon dioxide containing 45.5% Si; 0.6kg ferromolybdenum containing 57.3% Mo; .8% metallic nickel powder 0.4kg; metallic chromium containing 99.1% Cr 5.2kg.
[0109] The obtained rutile stainless steel electrode 3 used for repairing corrosion and wear resistance of hydropower units was subjected to welding experiments, and its deposited metal composition: C: 0.030%, Mn: 0.90%, Si: 0.30%, Cr: 13.44%, Ni : 4.32%, Mo: 0.63%, Cu: 0.020%, S: 0.010%, P: 0.020%, and the balance is unavoidable impurities.
[0110]Deposited metal heat treatment 610℃×1h, its mechani...
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