High chromium cast iron containing SiC powder, preparation method thereof and wear resistant casting
A technology for high-chromium cast iron and wear-resistant parts. It is applied in the field of manufacturing wear-resistant castings and high-chromium cast iron. It can solve problems such as peeling off of the surface of castings and wear failure of castings, so as to improve friction and wear performance, resist high-temperature friction and wear, and improve The effect of abrasion resistance
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Embodiment 1
[0030] 1) Take SiC powder with a purity of 99.9%. The average particle size of SiC powder is 40 nanometers. SiC powder accounts for 6% of the total weight of the high-chromium cast iron. -3mm iron filings coverage;
[0031] 2) According to the composition of 3.9%C, 22%Cr, 1.0%Si, 1.6%Mo, 1.2%Mn, 0.4%Ni, 0.09%V, 0.031%S, 0.030%P, and the balance is Fe, the charge ratio is carried out , using a 250 kg medium-frequency induction furnace for melting, and the melting temperature is 1250 °C;
[0032] 3) During the smelting process, slag removal, deoxidation, refining, using graphite recarburizer to increase carbon, glass slag collection and deslagging to obtain refined metal liquid;
[0033] 4) Pour the refined metal liquid into the ladle after standing, and stir for 2 minutes to fully mix the SiC powder and the refined metal liquid, spread plant ash on it, and wait for pouring after standing for 10 minutes;
[0034] 5) Pour the refined molten metal mixed with SiC powder in step 4...
Embodiment 2
[0041] 1) Take SiC powder with a purity of 99.9%. The average particle size of SiC powder is 20 nanometers. SiC powder accounts for 3% of the total weight of high-chromium cast iron. covered by iron filings;
[0042] 2) According to the composition of 3.1%C, 18%Cr, 0.5%Si, 0.6%Mo, 0.6%Mn, 0.1%Ni, 0.04%V, 0.011%S, 0.018%P, and the balance is Fe, the charge ratio is carried out , using a 250 kg medium-frequency induction furnace for melting, and the melting temperature is 1550°C;
[0043] 3) During the smelting process, slag removal, deoxidation, refining, using graphite recarburizer to increase carbon, glass slag collection and deslagging to obtain refined metal liquid;
[0044] 4) Pour the refined metal liquid into the ladle after standing, and stir for 2 minutes to fully mix the SiC powder and the refined metal liquid, spread plant ash on it, and wait for pouring after standing for 10 minutes;
[0045] 5) Pour the refined molten metal mixed with SiC powder in step 4) into t...
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