Super carbonitriding process
A C-N, process technology, applied in the direction of metal material coating process, manufacturing tools, coating, etc., can solve the problems of complex heat treatment process, manual adjustment of inductors, and insignificant energy-saving effect, to improve hardness, save energy, structure stable effect
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Embodiment 1
[0019] A super C-N co-infiltration process, the process steps are as follows:
[0020] (1) Check whether the workpiece has cracks, bruises and other defects, and install the furnace;
[0021] (2) PPC sends the workpiece to the cleaning machine for cleaning and drying, and the time is 35 minutes;
[0022] (3) PPC sends the workpiece into the heating chamber for carburization, the radiant tube in the heating chamber is heated at full power, and the heating chamber is heated up. During the heating process, the amount of methanol introduced is 2L / h, the amount of propane is 4L / min, and the standard air is 90ml / min , the carbon potential is 1.0, the ammonia gas is 0.3m 3 / h, the temperature of the heating chamber rises to 840°C, and then maintains a constant temperature, and the holding time is 180min; after that, diffusion is carried out, the diffusion temperature is 840°C, and the carbon potential drops to 0.80; then the temperature is lowered to 800°C, and the holding time is 2...
Embodiment 2
[0030] A super C-N co-infiltration process, the process steps are as follows:
[0031] (1) Check whether the workpiece has cracks, bruises and other defects, and install the furnace;
[0032] (2) PPC sends the workpiece to the cleaning machine for cleaning and drying, and the time is 40 minutes;
[0033] (3) PPC sends the workpiece into the heating chamber for carburization, and the radiant tube in the heating chamber is heated at full power to raise the temperature of the heating chamber. During the heating process, the amount of methanol introduced is 1.5L / h, the amount of propane is 5L / min, and the standard air is 90ml / min. min, carbon potential is 1.1, ammonia gas is 0.2m 3 / h, the temperature of the heating chamber rises to 860°C, and then maintains a constant temperature, and the holding time is 150min; after that, diffusion is carried out, the diffusion temperature is 860°C, and the carbon potential drops to 0.85; then the temperature is lowered to 820°C, and the holdi...
Embodiment 3
[0041] A super C-N co-infiltration process, the process steps are as follows:
[0042] (1) Check whether the workpiece has cracks, bruises and other defects, and install the furnace;
[0043] (2) PPC sends the workpiece to the washing machine for cleaning and drying, and the time is 30 minutes;
[0044] (3) PPC sends the workpiece into the heating chamber for carburization, the radiant tube in the heating chamber is heated at full power, and the heating chamber is heated up. During the heating process, the amount of methanol introduced is 1L / h, the amount of propane is 4L / min, and the standard air is 80ml / min , the carbon potential is 0.9, the ammonia gas is 0.1m 3 / h, the temperature in the heating chamber rises to 840°C, and then maintains a constant temperature, and the holding time is 110min; then diffuses, the diffusion temperature is 840°C, and the carbon potential drops to 0.70; then the temperature is lowered to 810°C, and the holding time is 20min, and the carbon Po...
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