Liquid-phase modifier and method for preparing high-chromium iron
A technology of high chromium cast iron and modifier, applied in the field of metallurgy, can solve problems such as poor wear resistance of high chromium cast iron, and achieve the effects of improving toughness, improving wear resistance and saving electricity
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Embodiment 1
[0052] Step 1: Pre-furnace treatment: Melt the high-chromium cast iron whose composition is raw material A into a molten material, and rapidly raise the temperature to 1480 ° C ~ 1500 ° C, add aluminum, titanium iron, vanadium iron and boron iron alloy in turn, the alloy is melted and released from the furnace, and then Add zinc, copper and rare earth elements;
[0053] Step 2, pouring: the temperature is 1400°C to 1430°C to form a casting;
[0054] Step 3, heat treatment: including pre-pearlite treatment, austenite destabilization treatment and austenite homogenization treatment in sequence, the pre-pearlite treatment is to heat the casting to 650°C-850°C for 4h-6h , the austenite destabilization treatment is to raise the temperature of the casting to 950°C-1030°C for 4h-6h, and the austenite homogenization treatment is to keep the casting temperature at 950°C-1030°C for more than 8h.
[0055] Wherein, the chemical composition elements added in the above steps and their mass...
Embodiment 2
[0057] Step 1: Pre-furnace treatment: Melt the high-chromium cast iron whose composition is raw material B into a molten material, and rapidly raise the temperature to 1480°C-1500°C, add aluminum, ferro-titanium, ferro-vanadium and ferro-boron alloy in turn, the alloy is melted and released from the furnace, and then Add zinc, copper and rare earth elements;
[0058] Step 2, pouring: the temperature is 1400°C to 1430°C to form a casting;
[0059] Step 3, heat treatment: including pre-pearlite treatment, austenite destabilization treatment and austenite homogenization treatment in sequence, the pre-pearlite treatment is to heat the casting to 650°C-850°C for 4h-6h , the austenite destabilization treatment is to raise the temperature of the casting to 950°C-1030°C for 4h-6h, and the austenite homogenization treatment is to keep the casting temperature at 950°C-1030°C for more than 8h.
[0060] Wherein, the chemical composition elements added in the above steps and their mass pe...
Embodiment 3
[0062] Step 1: Pre-furnace treatment: Melt the high-chromium cast iron whose composition is raw material C into a molten material, and rapidly raise the temperature to 1480°C-1500°C, then add aluminum, ferro-titanium, ferro-vanadium and ferro-boron in sequence, and the alloy is melted and released from the furnace, and then Add zinc, copper and rare earth elements;
[0063] Step 2, pouring: the temperature is 1400°C to 1430°C to form a casting;
[0064] Step 3, heat treatment: including pre-pearlite treatment, austenite destabilization treatment and austenite homogenization treatment in sequence, the pre-pearlite treatment is to heat the casting to 650°C-850°C for 4h-6h , the austenite destabilization treatment is to raise the temperature of the casting to 950°C-1030°C for 4h-6h, and the austenite homogenization treatment is to keep the casting temperature at 950°C-1030°C for more than 8h.
[0065] Wherein, the chemical composition elements added in the above steps and their ...
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