Production method of CoCrMo alloy for artificial joints
A technology for artificial joints and production methods, which is applied to the improvement of process efficiency, tissue regeneration, medical science and other directions, can solve the problems of successful forging without CoCrMo alloy ingots, and achieve the effect of improving production yield and high purity
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Example Embodiment
[0038] Example one:
[0039] In this embodiment, the production method of CoCrMo alloy for artificial joints includes the following steps:
[0040] 1) Use a pollution-free crucible for smelting in a vacuum induction furnace;
[0041] 2) When selecting materials, use metallic cobalt (Co99.8wt%), metallic chromium (Cr99.95wt%), Mo-1 metallic molybdenum in GB / T3462 and other raw materials for smelting; vacuum the furnace to 15Pa and start sending Power smelting, keep the vacuum at 25Pa during the smelting process, quickly increase the power to clear after the material turns red, and then maintain this high power to increase the bath temperature;
[0042] 3) Refining starts when the bath temperature reaches 1600°C, the refining time is 20min, and the vacuum degree during refining is 15Pa; then the nitrogen filling operation is carried out, the nitrogen filling pressure is 54KPa, the nitrogen filling time is 12min, and the nitrogen content is 0.10wt. %;
[0043] 4) The ternary slag is used...
Example Embodiment
[0048] Embodiment two:
[0049] In this embodiment, the production method of CoCrMo alloy for artificial joints includes the following steps:
[0050] 1) Use a pollution-free crucible for smelting in a vacuum induction furnace;
[0051] 2) When selecting materials, use metallic cobalt (Co99.8wt%), metallic chromium (Cr99.95wt%), Mo-1 metallic molybdenum in GB / T3462 and other raw materials for smelting; vacuum the furnace to 14Pa and start sending Power smelting, maintain a vacuum of 24 Pa during the smelting process, and quickly increase the power to clear after the material turns red, and then maintain this high power to increase the temperature of the molten pool;
[0052] 3) Refining starts when the bath temperature reaches 1600℃, the refining time is 30min, and the vacuum degree during refining is 14Pa; after that, the nitrogen filling operation is carried out, the nitrogen filling pressure is 54KPa, the nitrogen filling time is 18min, and the nitrogen content is 0.18wt. %;
[005...
Example Embodiment
[0058] Example three:
[0059] In this embodiment, the production method of CoCrMo alloy for artificial joints includes the following steps:
[0060] 1) Use a pollution-free crucible for smelting in a vacuum induction furnace;
[0061] 2) When selecting materials, use metallic cobalt (Co99.8wt%), metallic chromium (Cr99.95wt%), Mo-1 metallic molybdenum in GB / T3462 and other raw materials for smelting; vacuum the furnace to 13Pa and start sending Power smelting, keep the vacuum at 23Pa during the smelting process, quickly increase the power to clear after the material turns red, and then keep this high power to increase the temperature of the molten pool;
[0062] 3) Refining starts when the bath temperature reaches 1600℃, the refining time is 25min, and the vacuum degree during refining is 13Pa; after that, the nitrogen filling operation is carried out, the nitrogen filling pressure is 54KPa, the nitrogen filling time is 14min, and the nitrogen content is 0.14wt. %;
[0063] 4) The te...
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