Carburization quenching method for round hole thin wall work-piece
A technology of carburizing and quenching workpieces, which is applied in the field of carburizing and quenching of thin-walled workpieces with round holes. It can solve problems such as troublesome operation, low production efficiency, and increased costs, and achieve high production efficiency, low production costs, and guaranteed product quality. Effect
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[0012] Refer to the attached drawings. Workpiece 1 is a gear ring for a Mercedes-Benz car, and its inner and outer diameter drawings are as follows: D 1 = 227.78 0 + 0.046 , D 2 = 235 0 + 0.046 , d = 262 - 0.081 0 , After machining, it is placed in a carburizing furnace and carburized according to a conventional process. After being taken out of the carburizing furnace, a pre-expansion mold 2 is installed in the inner hole of the workpiece. The shrinkage of the aperture after quenching separately during mold expansion is determined and processed into d 1 =227.95, d 2 =235.20, the inner hole of...
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