A kind of titanium alloy surface nitriding process
A titanium alloy and nitriding technology, which is applied in metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of slow nitriding speed, brittle treatment time of the permeated layer, thin permeated layer, etc., and achieve smooth surface , hardness and wear resistance are improved, and the effect of no cracks on the surface
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Embodiment 1
[0041] A titanium alloy surface nitriding process, comprising the following steps:
[0042] Step 1. Pretreatment of the surface of the titanium alloy substrate: Cut the Ti-6Al-4V titanium alloy material into 15mm×80mm×10mm, grind it successively with 100 mesh, 200 mesh, and 500 mesh water abrasive paper, and then use ultrasonic waves at a frequency of 40Hz Wash it for 25 minutes under the condition, and dry it with the cold air mode of the hair dryer;
[0043] Step 2. Put the titanium alloy substrate into the nitriding device of SK-1600°C series vacuum / atmosphere tube electric furnace, seal the device, and evacuate the nitriding device to below 0.1Pa through a vacuum pump;
[0044] Step 3: Set the heating rate of the nitriding device to 5°C / min, raise the temperature to a nitriding temperature of 600°C, and maintain a vacuum environment in the furnace;
[0045] Step 4: Feed high-purity nitrogen gas into the nitriding device at a flow rate of 3 L / min, nitriding for 10 hours, a...
Embodiment 2
[0047] A titanium alloy surface nitriding process, comprising the following steps:
[0048] Step 1. Pretreatment of the surface of the titanium alloy substrate: Cut the TB6 titanium alloy material into 15mm×80mm×10mm, polish it successively with 100 mesh, 200 mesh, and 500 mesh water abrasive paper, and then clean it with ultrasonic waves for 30 minutes at a frequency of 35Hz , and blow dry with a hair dryer in cold mode;
[0049] Step 2. Put the titanium alloy substrate into the nitriding device of SK-1600°C series vacuum / atmosphere tube electric furnace, seal the device, and evacuate the nitriding device to below 0.1Pa through a vacuum pump;
[0050] Step 3. Set the heating rate of the nitriding device to 8°C / min, raise the temperature to a nitriding temperature of 950°C, and maintain a vacuum environment in the furnace;
[0051] Step 4: Feed a mixed gas of nitrogen and argon with a volume ratio of 1:2 into the nitriding device at a flow rate of 5 L / min, perform nitriding for...
Embodiment 3
[0053] A titanium alloy surface nitriding process, comprising the following steps:
[0054] Step 1. Pretreatment of the surface of the titanium alloy substrate: Cut the TA15 titanium alloy material into 15mm×80mm×10mm, grind it successively with 100 mesh, 200 mesh, and 500 mesh water abrasive paper, and then clean it with ultrasonic waves at a frequency of 45Hz for 20 minutes , and blow dry with a hair dryer in cold mode;
[0055] Step 2. Put the titanium alloy substrate into the nitriding device of SK-1600°C series vacuum / atmosphere tube electric furnace, seal the device, and evacuate the nitriding device to below 0.1Pa through a vacuum pump;
[0056] Step 3: Set the heating rate of the nitriding device to 10°C / min, raise the temperature to a nitriding temperature of 1200°C, and maintain a vacuum environment in the furnace;
[0057] Step 4: Feed a mixed gas of nitrogen and argon with a volume ratio of 1:5 into the nitriding device at a flow rate of 8 L / min, perform nitriding...
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