Antibacterial and antitoxic austenitic stainless steel and preparation method thereof
A toxic austenitic and stainless steel technology, applied in the field of antibacterial toxic austenitic stainless steel and its preparation, can solve the problems of antibacterial performance decline, hot brittle cracking, etc., achieve cost control, improve corrosion resistance performance, and improve inclusions Effect
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[0023]A method for preparing antibacterial and poisonous austenitic stainless steel, comprising the following steps: step a, configuring raw materials according to a formula, said formula having the following elemental components and their contents, said contents being in mass percentage wt%, C≤0.03, Si≤0.75, Mn≤2.0, S≤0.030, P≤0.045, Cr=17.5~19.5, Ni=8.0~12.0, Cu≤1.0, N≤0.1, Ag=0.01~0.15, RE=0.010~0.045, the rest is iron and unavoidable impurities, wherein RE is at least one rare earth element in La and Ce; step b, the raw materials are sequentially subjected to primary smelting furnace, out-of-furnace refining, forging, hot rolling and cold rolling processes to obtain the For stainless steel plates or rods and wires of required specifications, a first annealing process is set between the forging and the hot rolling, a second annealing process is set between the hot rolling and the cold rolling, and after the cold rolling Set up a solid solution treatment process, and finally...
Embodiment 1
[0039] Embodiment 1: In this embodiment, an antibacterial and poisonous austenitic stainless steel has a chemical composition as shown in Table 1. The preparation method of the antibacterial and poisonous austenitic stainless steel of the present embodiment comprises the following steps:
[0040] a. Weigh the raw materials according to the prepared target stainless steel component mass percentage with the composition of Table 1:
[0041] C: 0.028%, Si: 0.27%, Mn: 1.17%, S: 0.001%, P: 0.012%, Cr: 18.89%, Ni: 9.25%, N: 0.06%, Cu: 0.023%, Ag: 0.034%, La+Ce: 0.016%, the rest is iron and unavoidable impurities;
[0042] b. The raw materials taken in the step a are subjected to induction melting, out-of-furnace refining of LF process, forging, hot rolling, and cold rolling to obtain stainless steel plates of required thickness; after forging and hot rolling, respectively An annealing process is set up, and after cold rolling, solution treatment at 1050-1100°C is carried out to fin...
Embodiment 2
[0043] Embodiment 2: In this embodiment, an antibacterial and poisonous austenitic stainless steel has a chemical composition as shown in Table 1. The preparation method of the antibacterial and poisonous austenitic stainless steel of the present embodiment comprises the following steps:
[0044] a. Weigh the raw materials according to the prepared target stainless steel component mass percentage with the composition of Table 1:
[0045] C: 0.027%, Si: 0.28%, Mn: 1.27%, S: 0.022%, P: 0.028%, Cr: 18.41%, Ni: 9.34%, N: 0.07%, Cu: 0.573%, Ag: 0.10%, The remainder is iron and unavoidable impurities;
[0046] b. The raw materials taken in the step a are subjected to a series of processes of electric arc furnace smelting, AOD smelting, LF refining, continuous casting, hot rolling, and cold rolling to obtain stainless steel plates of required thickness; After the hot rolling, an annealing process is set respectively, and after the cold rolling, a solution treatment at 1050-1100°C i...
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