A double rare earth doped modified wear-resistant alloy cast iron and its preparation method
A wear-resistant alloy and dual rare earth technology, applied in the preparation of wear-resistant alloy cast iron, wear-resistant alloy cast iron field, can solve the problems of uneven structure, poor surface quality, segregation, etc., to reduce grain boundary segregation and inclusions, improve hardness and wear resistance, the effect of improving the bonding strength
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Embodiment 1
[0029] A double rare earth doped modified vermicular graphite cast iron, made of the following components in weight percent: C 3.1-3.2%, Si-0.9%, Mn-0.6%, Cu: 1.0-1.5%, P: 0.2-0.4, B: 0.02 to 0.04%, S to 0.0005%, La: 0.03 to 0.04%, Ce: 0.06 to 0.07%, and the rest are Fe and unavoidable impurities.
[0030] The preparation method comprises the following steps:
[0031] (1) Allocation of raw materials: Determine the ingredients of raw materials such as 45 steel, pig iron, ferrophosphorus, ferromanganese, ferroboron, ferrosilicon, and copper according to the above-mentioned cast iron composition ratio;
[0032] (2) Raw material smelting: In the smelting furnace, the prepared raw materials are smelted at 1450°C to obtain molten iron;
[0033] (3) Inoculation: Add the lanthanum-cerium double rare earth mixture before the ladle, and then pour the molten iron into the ladle for inoculation in the ladle. The incubation time is about 10 minutes, and the temperature of the molten iron ...
Embodiment 2
[0036] A double rare earth doped modified vermicular graphite cast iron, made of the following components in weight percent: C 3.1-3.2%, Si-0.9%, Mn-0.6%, Cu: 1.0-1.5%, P: 0.2-0.4, B: 0.02 to 0.04%, S to 0.0005%, La: 0.06 to 0.08%, Ce: 0.12 to 0.14%, and the rest are Fe and unavoidable impurities.
[0037] The preparation method comprises the following steps:
[0038] (1) Allocation of raw materials: Determine the ingredients of raw materials such as 45 steel, pig iron, ferrophosphorus, ferromanganese, ferroboron, ferrosilicon, and copper according to the above-mentioned cast iron composition ratio;
[0039] (2) Raw material smelting: In the smelting furnace, the prepared raw materials are smelted at 1500°C to obtain molten iron;
[0040] (3) Inoculation: Add the lanthanum-cerium double rare earth mixture before the ladle, and then pour the molten iron into the ladle for inoculation in the ladle. The incubation time is about 10 minutes, and the temperature of the molten iron ...
Embodiment 3
[0043] A double rare earth doped modified vermicular graphite cast iron, which is made of the following components in weight percentage: C: 3.1-3.2%, Si-0.9%, Mn-0.6%, Cu: 1.0-1.5%, P: 0.2-0.4 , B: 0.02-0.04%, S-0.0005%, La: 0.12-0.16%, Ce: 0.24-0.28%, and the rest are Fe and unavoidable impurities.
[0044] The preparation method comprises the following steps:
[0045] (1) Allocation of raw materials: Determine the ingredients of raw materials such as 45 steel, pig iron, ferrophosphorus, ferromanganese, ferroboron, ferrosilicon, and copper according to the above-mentioned cast iron composition ratio;
[0046] (2) Raw material smelting: In the smelting furnace, the prepared raw materials are smelted at 1500°C to obtain molten iron;
[0047] (3) Inoculation: Add the lanthanum-cerium double rare earth mixture before the ladle, and then pour the molten iron into the ladle for inoculation. The incubation time is about 10 minutes, and the temperature of the molten iron is 1450°C; ...
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