Medical high-nitrogen nickel-free austenitic stainless steel material and production method thereof
A high-nitrogen stainless steel and stainless steel technology, used in prosthesis, medical science, etc., can solve the problems of short development time and no discussion of cytotoxicity, and achieve excellent mechanical properties, cytotoxicity and pyrogenicity determination performance. The effect of wear and corrosion resistance
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Embodiment 1
[0029] See Table 1 for the weight percentage of each component of the medical high-nitrogen nickel-free stainless steel material.
[0030] Table 1 Chemical composition of medical high-nitrogen nickel-free stainless steel materials (the following are mass percentages)
[0031] serial number Cr mn Mo C Ti N Ce S P 1 16.08 13.56 2.06 0.021 0.013 0.42 0.03 0.006 0.009 2 17.34 14.69 2.10 0.0075 0.022 0.54 0.05 0.003 0.006 3 17.62 15.34 2.10 0.0056 0.013 0.60 0.07 0.001 0.007
Embodiment 2
[0033] Get the ingredient formula of Example 1, and obtain the medical high-nitrogen nickel-free stainless steel material of the present invention by the following method.
[0034] The medical high-nitrogen nickel-free stainless steel of the present invention is smelted in a vacuum induction furnace and refined in an electroslag furnace, and processed into stainless steel in different product forms through forging, rolling, drawing and other processes. The processing and heat treatment processes are as follows:
[0035] Melting: Vacuum induction smelting and electroslag furnace remelting and refining are adopted. During vacuum induction smelting, the refining temperature is 1450-1500°C. During the refining process, the pressure of nitrogen protection is kept at 0.25-0.35MPa, and the pouring temperature is 1420-1440°C. Vacuum ingots are refined by electroslag remelting; homogenization treatment: heat treatment at 1050-1120°C for 4-6 hours, and then forging billets; forging: forg...
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