Cutter ring manufacturing process
A technology of manufacturing process and knife ring, which is applied in the field of steel structure manufacturing process, can solve the problems of narrow application range, easy fracture and wear resistance, etc., and achieve the effects of reducing construction cost, increasing hardness and improving wear resistance
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Embodiment 1
[0014] The prepared steel ingot is selected according to the size of the knife ring, and the required cutting material is selected according to the size of the knife ring, and the knife ring blank is formed by die forging with a forging die. The knife ring blank is placed in the furnace, heated to 870 ° C, and then kept in the furnace for 4 hours. , and then lower the temperature at a rate of 2°C / min. When the temperature in the furnace drops to 730°C, keep the heat for 2 hours, then cool down at a rate of 2°C / min. When the temperature of the knife ring blank drops to 400°C, move the knife ring blank to Cool and anneal in the atmosphere outside the furnace, and cool to room temperature.
Embodiment 2
[0016] The annealed knife ring blank is processed into a finished shape, and then the precision hole inlaid with carbide teeth is processed on the outer circle, and the processed knife ring with carbide tooth holes is segmented in the heating furnace Heating, first heat the knife ring blank to 650°C, heat it for 60 minutes, then heat it to 1050°C, keep it for 60 minutes, then cool it to room temperature at a cooling rate above 100°C / min, and place the cooled knife ring blank Heat it in the furnace to 550°C for tempering treatment, keep it in the furnace at 550°C for 150 minutes, and then cool it to room temperature at a cooling rate of 50°C / min or more; place the cooled knife ring blank in the furnace to heat Tempering treatment at 550°C, heat preservation in a furnace at 550°C for 150 minutes, then quenching at room temperature at a cooling rate of 50°C / min or more. The hardness of the quenched knife ring is HRC50-53, the impact toughness is 18-20 / cm2, and the tensile strengt...
Embodiment 3
[0018] The finished steel ingot is then cut according to the hole of the knife ring, and the steel ingot is made into carbide teeth corresponding to the hole of the knife ring through semi-finishing turning, and then the hard alloy teeth corresponding to the hole of the knife ring are finished. For alloy teeth, heat the processed cemented carbide teeth in a heating furnace. First, heat the cemented carbide teeth to 650°C, hold for 60 minutes, then heat to 1050°C, hold for 60 minutes, and then heat at 100°C / min. Cooling rate to room temperature, place the cooled carbide teeth in the furnace and heat to 550°C for tempering treatment, keep it in the furnace at 550°C for 150 minutes, then cool to room temperature at a cooling rate of 50°C / min or more State: After placing the cooled carbide teeth in the furnace and heating them to 550°C for tempering treatment, after keeping them in the furnace at 550°C for 150 minutes, quenching at room temperature at a cooling rate above 50°C / min ...
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Abstract
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