Iron-based composite material and its preparation method and application
A technology of iron-based composite materials and pig iron, which is applied in the field of anti-corrosion and wear of liquid metals, can solve problems affecting the application of high-boron alloys, and achieve the effects of improving anti-corrosion efficiency, good bonding, and strengthening anti-corrosion performance of molten aluminum
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[0034]
[0035] The preparation method of iron-based composite material of the present invention comprises the steps:
[0036] (1) Add steel scrap, pig iron, ferrochrome and ferronickel into a vacuum intermediate frequency induction furnace, mix and melt to obtain a mixed solution;
[0037] (2) After the mixed liquid is completely cleared, the temperature is lowered to 1550±10°C, and the temperature is kept for 10-12min to obtain the alloy liquid;
[0038] (3) Add ferroboron, ferrosilicon and ferrotitanium into the alloy liquid, heat up to 1580±10°C, and roll for about 2 minutes to obtain molten steel;
[0039] (4) Controlling the temperature of the molten steel at 1530-1550° C., casting it into a preheated cast iron mold, and demoulding to obtain an iron-based composite material.
[0040] In fact, electromagnetic stirring is always applied during the above-mentioned melting process, so as to ensure uniform alloy composition and uniform dispersion of in-situ-generated ceram...
Embodiment 1
[0049] The iron-based composite material of the present embodiment comprises the following components:
[0050] 0.35wt% C, 3.5wt% B, 12.0wt% Cr, 0.7wt% Ti, 0.5wt% Ni, 2.0wt% Si, the balance being Fe.
[0051] The preparation method of the iron-based composite material of the present embodiment comprises the following steps:
[0052] (1) Add steel scrap, pig iron, ferrochrome and ferronickel into a vacuum intermediate frequency induction furnace, mix and melt to obtain a mixed solution;
[0053] (2) After the mixed liquid is completely cleared, the temperature is lowered to 1550°C, and the temperature is kept for about 10 minutes to obtain the alloy liquid;
[0054] (3) Add ferroboron, ferrosilicon and ferrotitanium into the alloy liquid, heat up to 1580°C, and roll for about 2 minutes to obtain molten steel;
[0055] (4) Control the temperature of the molten steel at 1530° C., pour it into a preheated cast iron mold, and demold it to obtain an iron-based composite material. ...
Embodiment 2
[0057] The content of added Ti element is 1.4wt%, and the content and preparation method of other components are the same as in Example 1.
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