Metal surface nitriding technology
A technology for metal surfaces and metal workpieces, which is applied in the field of surface chemical treatment, can solve problems such as limited effects, and achieve the effects of improved effects, fast cleaning effects, and high reaction efficiency
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[0046] Example one
[0047] A process for nitriding a metal surface, including a metal workpiece to be processed, and processing the workpiece includes the following steps:
[0048] 1) Use water containing detergent to soak the workpiece, rinse the workpiece with 100℃ water after rinsing;
[0049] 2) Put the oil-removed workpiece in the pool for ultrasonic cleaning, the frequency of cleaning vibration is 80KHz, the power density is set at 0.6W / C, and the time of ultrasonic cleaning is 8min;
[0050] 3) Preheat the workpiece to 300℃, the preheating time is 6min;
[0051] 4) Place the workpiece in a nitriding furnace containing Li ion-based salts, and then extract the air from the nitriding furnace, and refill the nitriding furnace with mixed gas;
[0052] 5) The workpiece is placed in a nitriding furnace containing a base salt containing Li ions, and the nitriding furnace is raised to 520°C, and the nitriding time is 80min;
[0053] 6) Add solid sodium peroxide to the base salt, and the we...
Example Embodiment
[0066] Example two
[0067] A process for nitriding a metal surface, including a metal workpiece to be processed, and processing the workpiece includes the following steps:
[0068] 1) Use water containing detergent to soak the workpiece, rinse the workpiece with 100℃ water after rinsing;
[0069] 2) Put the oil-removed work piece in the pool for ultrasonic cleaning, the cleaning vibration frequency is 120KHz, the power density is set at 0.8W / C, and the ultrasonic cleaning time is 12min;
[0070] 3) Preheat the workpiece to 355℃, the preheating time is 15min;
[0071] 4) Place the workpiece in a nitriding furnace containing Li ion-based salts, and then extract the air from the nitriding furnace, and refill the nitriding furnace with mixed gas
[0072] 5) Place the workpiece in a nitriding furnace containing a base salt containing Li ions, raise the nitriding furnace to 550°C, and the nitriding time is 93 minutes;
[0073] 6) Add solid sodium peroxide to the base salt, and the weight ratio...
Example Embodiment
[0086] Example three
[0087] A process for nitriding a metal surface, including a metal workpiece to be processed, and processing the workpiece includes the following steps:
[0088] 1) Use water containing detergent to soak the workpiece, rinse the workpiece with 100℃ water after rinsing;
[0089] 2) Put the oil-removed workpiece in the pool for ultrasonic cleaning, the frequency of cleaning vibration is 160KHz, the power density is set at 1.0W / C, and the ultrasonic cleaning time is 15min;
[0090] 3) Preheat the workpiece to 385℃, and the preheating time is 25min;
[0091] 4) Place the workpiece in a nitriding furnace containing Li ion-based salts, and then extract the air from the nitriding furnace, and refill the nitriding furnace with mixed gas;
[0092] 5) Place the workpiece in a nitriding furnace containing a base salt containing Li ions, and raise the nitriding furnace to 580°C, and the nitriding time is 100min;
[0093] 6) Add solid sodium peroxide to the base salt, and the wei...
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