A kind of high silicon vanadium, titanium stainless steel material and preparation method thereof
A technology of stainless steel and high silicon, which is applied in the field of titanium stainless steel and its preparation, high silicon and vanadium, can solve the problems that the strength, toughness and wear resistance of stainless steel cannot be satisfied, and the strength, toughness and wear resistance of stainless steel cannot meet the existing needs, etc. Achieve high hardness, high toughness, improve strength and toughness
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[0056] The application also provides a method for preparing a high-silicon vanadium- and titanium-containing stainless steel material, comprising the following steps:
[0057] Step S1, smelting molten steel, and then casting to obtain an ingot;
[0058] Specifically, step S1 includes: loading scrap steel, pig iron, ferrochrome, and nickel blocks into the induction melting furnace, and after the molten steel is dissolved, ferrosilicon, ferromanganese, titanium wire, and ferrovanadium are sequentially added through the secondary feeding device for vacuuming. During smelting, the maximum temperature of molten steel rises to 1550-1620°C, and after the temperature drops to 1420-1450°C, casting is performed, and air-cooled to room temperature; an ingot is obtained, and the diameter of the ingot is 70-90mm.
[0059] Step S2, forging an ingot to obtain a billet;
[0060] Specifically, step S2 includes: heating the ingot obtained in step S1 to 1150-1180° C., keeping the temperature fo...
Embodiment 1
[0075] The chemical composition of the steel of the present embodiment is shown in Table 1, and the preparation method comprises the following steps:
[0076] Step S1, load scrap steel, pig iron, ferrochromium, and nickel blocks into the induction melting furnace according to the alloy composition ratio. After the molten steel is dissolved, add ferrosilicon, ferromanganese, titanium wire, and ferrovanadium in turn through the secondary feeding device. In vacuum smelting, the maximum temperature of molten steel rises to 1550°C, and when the temperature drops to 1420°C, casting is performed to obtain an ingot with a diameter of Φ70mm, which is air-cooled.
[0077] Step S2, heating the above-mentioned ingot to 1150°C, holding the temperature for 2h to homogenize, and forging, the initial forging temperature is 1050°C, the final forging temperature is 850°C, and the forging process adopts three piers and three pulls, and the diameter is obtained after forging. Φ45mm billet, air-co...
Embodiment 2
[0081] The chemical composition of the steel of the present embodiment is shown in Table 1, and the preparation method comprises the following steps:
[0082] Step S1, load scrap steel, pig iron, ferrochromium, and nickel blocks into the induction melting furnace according to the alloy composition distribution ratio. After the molten steel is dissolved, add ferrosilicon, ferromanganese, titanium wire, and ferrovanadium in turn through the secondary feeding device. In vacuum smelting, the maximum temperature of molten steel rises to 1600 °C, and when the temperature drops to 1440 °C, casting is performed to obtain an ingot with a diameter of Φ80mm, which is air-cooled.
[0083] Step S2, heating the above-mentioned ingot to 1180°C, keeping the temperature for 1.5h for homogenization, and forging, the initial forging temperature is 1060°C, the final forging temperature is 870°C, and the forging process adopts three piers and three draws. Steel billet with a diameter of Φ47mm, air...
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Abstract
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