Carburizing and Quenching Method for Large Excavator Gears
A carburizing quenching and excavator technology, applied in the field of heat treatment, can solve problems such as low carburizing temperature, fluctuation of carbon potential in the furnace, and difficulty in controlling carbon potential, so as to improve tooth surface hardness and wear resistance, and smooth carbon concentration gradient , The effect of shortening the heat treatment time
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[0026] See figure 1 As shown, the carburizing and quenching method of the large excavator gear of the present invention comprises the following steps.
[0027] ⑴. In the step of heating and uniform temperature, first place the gear in the carburizing furnace and heat it to 750±10°C, and keep it warm for 3-4h.
[0028] (2) Intensive carburizing step, the temperature of the carburizing furnace is raised, the gear is heated to 960-980°C with the furnace, and the carburizing agent is passed into the carburizing furnace for carburizing, and the carbon potential CP is controlled at 1.30±0.05C%, and the carbon potential is adjusted by adjusting the carburizing The flow of carbon agent is controlled to maintain a period of carburizing time t 强渗 , the carburizing time t during the strong infiltration of the present invention 强渗 It can be controlled within 8-10 hours. By increasing the temperature of strong infiltration and strong carburizing potential, a high carbon concentration is...
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