White cast iron with anti-fracture property and heat treatment technology
A technology of white cast iron and nickel-hard white cast iron, which is applied in the field of iron-carbon alloys, can solve problems such as low impact resistance, low toughness, and poor fracture resistance, so as to improve toughness and wear resistance, increase service life, and save energy. The effect of processing time
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Embodiment 1
[0020] The chemical composition of white cast iron in terms of mass percentage is as follows: C 2.0%, Si 0.6%, Cr 6.0%, Mn 0.2%, Ni 3.6%, Mo ≤0.98%, P ≤ 0.045%, S ≤ 0.06%, Fe margin.
Embodiment 2
[0022] The chemical composition of white cast iron in terms of mass percentage is as follows: C 2.8%, Si 0.9%, Cr 7.0%, Mn 0.38%, Ni 4.2%, Mo ≤0.98%, P ≤ 0.045%, S ≤ 0.06%, Fe margin.
Embodiment 3
[0024] The chemical composition of white cast iron in terms of mass percentage is as follows: C 2.5%, Si 0.8%, Cr 6.5%, Mn 0.3%, Ni 3.9%, Mo ≤0.98%, P ≤ 0.045%, S ≤ 0.06%, Fe margin.
[0025] The white cast iron with anti-fracture performance and the heat treatment process proposed by the present invention have novel components and a reasonable and clear production process. After two times of quenching and tempering, and through experiments to determine the quenching and tempering temperature, the treatment is carried out at this temperature. Greatly improve the toughness and wear resistance of nickel-hard white cast iron, make the cast iron less prone to cracks during use, and improve the service life. Productivity.
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