Hydraulic part servo valve body material formula and preparation process thereof
A preparation process and servo valve technology, applied in manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve the problems of graphite metal peeling, deep cutting depth, high cutting speed, and achieve the effect of preventing pitting and small holes
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Embodiment 1
[0031] A preparation process for a servo valve body of a hydraulic component, the steps comprising:
[0032] 1) Using an electric furnace for smelting, add 15 parts of pig iron, 40 parts of scrap steel, and 20 parts of returned material in the electric furnace in order by weight, and melt; the C content is guaranteed to be 2.8%, and the Si content is guaranteed to be 1.5%;
[0033] 2) After melting, reach 1400-1450°C and then add 0.035 parts of Sn into the electric furnace;
[0034] 3) continue to add 20 parts of ferrochrome in electric furnace again, wherein chromium content accounts for 0.25% of ferrochrome total amount;
[0035] 4) Then continue to add 0.55 parts of copper; that is, electrolytic copper.
[0036] 5) Then carry out the inoculation treatment in three times. When tapping the iron for the first time, add 0.3 parts of silicon-barium inoculant to the ladle, add 0.2 parts of silicon-barium inoculant when pouring the ladle for the second time, and use silicon-stron...
Embodiment 2
[0041] A preparation process for a servo valve body of a hydraulic component, the steps comprising:
[0042] 1) Using an electric furnace for smelting, add 25 parts of pig iron, 60 parts of scrap steel, and 40 parts of returned material in the electric furnace in order by weight, and melt; the C content is guaranteed to be 3.1%, and the Si content is guaranteed to be 1.8%;
[0043] 2) After melting, reach 1400-1450°C and then add 0.025 parts of Sn into the electric furnace;
[0044] 3) continue to add 30 parts of ferrochrome in electric furnace again, wherein chromium content accounts for 0.35% of ferrochrome total amount;
[0045] 4) Then continue to add 0.45 parts of copper; namely electrolytic copper;
[0046] 5) Then carry out the inoculation treatment in three times. When tapping the iron for the first time, add 0.3 parts of silicon-barium inoculant to the ladle, add 0.2 parts of silicon-barium inoculant when pouring the ladle for the second time, and use silicon-stronti...
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