Martensite aging anti-microbial stainless steel and preparation method thereof
An antibacterial stainless steel and martensite technology, applied in the field of materials, can solve the problems of poor material quality, no antibacterial performance, and unstable raw material quality, and achieve excellent strength and toughness matching, hardness and strength improvement, and excellent corrosion resistance. Effect
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[0047] Example 1
[0048] In this embodiment, the chemical composition of the maraging antibacterial stainless steel is: C: 0.39wt.%, Cr: 13.94wt.%, Cu: 2.52%, Mo: 0.54wt.%, V: 0.12wt.%, Mn : 0.49wt.%, Si: 0.45wt.%, O: 20ppm, N: 250ppm, S: 30ppm, P: 80ppm, the balance is iron.
[0049] In this embodiment, the heat treatment process after cold rolling: firstly heat at 1050°C for 30 minutes and then quench, then heat at 160°C for 150 minutes and then air-cool to room temperature, and finally age at 500°C for 30 minutes and air-cool to room temperature.
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[0050] Example 2
[0051] In this embodiment, the chemical composition of the maraging antibacterial stainless steel is: C: 0.49wt.%, Cr: 16.42wt.%, Cu: 3.34%, Mo: 0.86wt.%, V: 0.17wt.%, Mn : 0.82wt.%, Si: 0.76wt.%, O: 35ppm, N: 330ppm, S: 40ppm, P: 67ppm, the balance is iron.
[0052] In this embodiment, the heat treatment process after cold rolling: firstly heat at 1060°C for 40 minutes and then quench, then heat at 170°C for 120 minutes and then air-cool to room temperature, and finally age at 510°C for 40 minutes and air-cool to room temperature.
Example Embodiment
[0053] Example 3
[0054] In this embodiment, the chemical composition of the maraging antibacterial stainless steel is: C: 0.43wt.%, Cr: 15.07wt.%, Cu: 2.81%, Mo: 0.57wt.%, V: 0.15wt.%, Mn : 0.52wt.%, Si: 0.48wt.%, O: 28ppm, N: 245ppm, S: 50ppm, P: 52ppm, the balance is iron.
[0055] In this embodiment, the heat treatment process after cold rolling: first heat at 1030°C for 50 minutes and then quench, then heat at 180°C for 180 minutes and then air-cool to room temperature, and finally age at 520°C for 50 minutes and air-cool to room temperature.
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