White cast iron with higher impact resistance and manufacturing method thereof
A technology of impact resistance, white cast iron, applied in the field of iron-carbon alloys, can solve the problems of low impact resistance, poor fracture resistance, low toughness, etc., to improve toughness and wear resistance, long working life, meet strong impact Effect
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[0018] The present invention will be further described below:
[0019] White cast iron with high impact resistance, the composition of white cast iron by weight percentage is as follows: C 8-12%, Si0.05-0.25%, Cr 6.0-7.0%, Mn 0.2-0.38%, Ni 3.6-4.2 %, Mo ≤0.98%, P ≤0.045%, S ≤0.06%, and the balance is Fe.
[0020] A method for manufacturing white cast iron with high impact resistance, comprising the following steps:
[0021] (1) Material preparation: Prepare materials according to the following weight percentages: C 8%, Si 0.05%, Cr 6.0%, Mn 0.2%, Ni3.6%, Mo ≤0.98%, P ≤ 0.045%, S ≤ 0.06%, and the balance is Fe;
[0022] (2) Heating: heat the above components to 1500°C and melt them into liquid white cast iron;
[0023] (3) pouring: pouring liquid white cast iron into the mould;
[0024] (4) mold opening: mold opening after being cooled to room temperature takes out solid white cast iron;
[0025] (5) Quenching: the solid white cast iron is placed in a continuous heat treat...
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