Novel martensite antibacterial stainless steel as well as heat treatment method and application thereof
A technology of antibacterial stainless steel and heat treatment method, applied in the field of stainless steel materials, can solve the problems of restricting product development and application, poor corrosion resistance, etc., achieve the effect of enriching material product types, excellent corrosion resistance, and improving the performance of stainless steel
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Embodiment 1
[0043] In this example, the chemical composition of martensitic antibacterial stainless steel is as follows (wt) %:
[0044] C: 0.20%; Si: 0.35%; Mn: 0.45%; P: 0.005%; S: 0.003%; Cr: 12.18%; Cu: 3.58%; Mo: 1.10%; V: 0.08%; N: 0.04%; B: 0.003%; the balance is Fe.
[0045] The above-mentioned martensitic antibacterial stainless steel is forged into rods at 1120° C. after vacuum induction smelting. The heat treatment process of martensitic antibacterial stainless steel is:
[0046] (1) Insulate at 1040°C for 0.5h, so that the copper in the steel can be fully dissolved in the matrix, and after the oil is cooled to room temperature, the copper in the steel is in a supersaturated state;
[0047] (2) Insulate at 700°C for 6 hours to allow supersaturated copper to precipitate a sufficient amount of copper-rich phase from the steel, and then air cool to room temperature;
[0048] (3) Insulate at 1000°C for 3 minutes, and cool the oil to room temperature;
[0049] (4) Temper at 150°...
Embodiment 2
[0053] In this example, the chemical composition of martensitic antibacterial stainless steel is as follows (wt) %:
[0054] C: 0.21%; Si: 0.25%; Mn: 0.40%; P: 0.008%; S: 0.010%; Cr: 12.76%; : 0.10%; N: 0.045%; B: 0.004%; the balance is Fe.
[0055] The above-mentioned martensitic antibacterial stainless steel is forged into rods at 1120° C. after vacuum induction smelting. The heat treatment process of martensitic antibacterial stainless steel is:
[0056] (1) Insulate at 1040°C for 0.5h, so that the copper in the steel can be fully dissolved in the matrix, and after water cooling to room temperature, the copper in the steel is in a supersaturated state;
[0057] (2) Insulate at 700°C for 6 hours to allow supersaturated copper to precipitate a sufficient amount of copper-rich phase from the steel, and then air cool to room temperature;
[0058] (3) After heat preservation at 1000°C for 5 minutes, the oil is cooled to room temperature;
[0059] (4) Heat at 150°C for 1 hour...
Embodiment 3
[0064] In this example, the main components of martensitic antibacterial stainless steel are (wt)%:
[0065] C: 0.22%; Si: 0.45%; Mn: 0.50%; P: 0.012%; S: 0.008%; Cr: 14%; Cu: 3.72%; Mo: 1.23%; Ti: 0.10%; Ni: 1.8%; N: 0.05%; B: 0.005%; the balance is Fe.
[0066] The above martensitic antibacterial stainless steel is forged into rods at 1120°C after vacuum induction smelting. The heat treatment process of martensitic antibacterial stainless steel is:
[0067] (1) Insulate at 1040°C for 0.5h, so that the copper in the steel can be fully dissolved in the matrix, and after water cooling to room temperature, the copper in the steel is in a supersaturated state;
[0068] (2) Insulate at 700°C for 6 hours to allow supersaturated copper to precipitate a sufficient amount of copper-rich phase from the steel, and then air cool to room temperature;
[0069] (3) After heat preservation at 1000°C for 3 minutes, the oil is cooled to room temperature;
[0070] (4) Heat at 150°C for 1 hou...
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