High-chromium cast iron composite inoculant, preparation method and application thereof
A composite inoculant and high-chromium cast iron technology, which is applied in the field of chromium-containing cast iron alloys, can solve the problem that the comprehensive mechanical properties of high-chromium cast iron alloys cannot be effectively improved, and the crystal grain and structure refinement effect of the cast iron alloy matrix is not ideal, etc. problems, to achieve the effect of matrix grain refinement, increase interface energy, and reduce casting defects
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Embodiment 1
[0040] Weigh 1000 grams of commercially available Fe-Ce-Si-Ca master alloy and 100 grams of commercially available Fe-B master alloy, break them into small pieces, put them into the water-cooled copper crucible of the vacuum quenching furnace, and adjust the electrode position , so that the distance between it and the raw material alloy particles in the crucible is 0.5mm, close the furnace door, the inlet and outlet and the air release valve, and vacuumize to a temperature higher than 5×10 -3 Pa, wash the furnace with argon, then fill it with argon to 0.04Pa, adjust the arc current to gradually increase to 500A after arcing, melt the raw material alloy in the crucible, and when the alloy is completely melted into a liquid state, tilt the crucible so that The alloy liquid is led to the high-speed rotating water-cooled molybdenum wheel through the flow channel. The edge speed of the molybdenum wheel is 30m / s, and the surface temperature of the molybdenum wheel is 10°C. After cont...
Embodiment 2
[0042] Take by weighing 1200 grams of commercially available Fe-Ce-Si-Ca master alloy and 84 grams of commercially available Fe-B master alloy with embodiment 1, they are broken into fritters, put into the water-cooled copper crucible of vacuum quenching furnace , adjust the position of the electrode so that the distance between it and the raw material alloy particles in the crucible is 1.0 mm, close the furnace door, the inlet and outlet, and the air release valve, and evacuate to a temperature higher than 5×10 -3 After Pa, wash the furnace with argon gas, then fill it with argon gas to 0.045Pa, adjust the arc current to gradually increase to 550A after arcing, melt the raw material alloy in the crucible, and when the alloy is completely melted into a liquid state, tilt the crucible so that The alloy liquid is led to the high-speed rotating water-cooled molybdenum wheel through the flow channel. The edge speed of the molybdenum wheel is 35m / s, and the surface temperature of th...
Embodiment 3
[0044] Take by weighing 1100 grams of commercially available Fe-Ce-Si-Ca master alloys and 143 grams of commercially available Fe-B master alloys in Example 1, they are broken into fritters, and put into the water-cooled copper crucible of the vacuum quenching furnace , adjust the position of the electrode so that the distance between it and the raw material alloy particles in the crucible is 1.5 mm, close the furnace door, the inlet and outlet, and the air release valve, and evacuate to a temperature higher than 5×10 -3 Pa, wash the furnace with argon, then fill it with argon to 0.05Pa, adjust the arc current to gradually increase to 600A after arcing, melt the raw material alloy in the crucible, and when the alloy is completely melted into a liquid state, tilt the crucible so that The alloy liquid is led to the high-speed rotating water-cooled molybdenum wheel through the flow channel. The edge speed of the molybdenum wheel is 40m / s, and the surface temperature of the molybde...
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