Semi-sank large precise ring rolling machine

Abstract

The invention relates to a kind of equipment for processing large metal rings, which comprises a door-shaped frame for clamping the ring workpiece to be processed. The door-shaped frame includes a fixed frame and a movable frame. There is a moving mechanism for driving the moving frame to move relative to the fixed frame. The fixed frame is opposite to the clamping surface of the moving frame and parallel to the end face of the ring-shaped workpiece to be processed; a pair of parallel rollers, including respectively installed on the gate The fixed roll and the moving roll on the frame, the moving roll is installed on the composite beam, and it is set between the portal frame and the composite beam to push the composite beam and the moving roll to move relative to the fixed roll and force the moving roll to roll the ring The pushing mechanism of the workpiece; the rotating mechanisms for driving the fixed roller and the movable roller to rotate around their respective axes are respectively connected to the fixed roller and the movable roller. The products processed by the ring rolling machine of the present invention have high work efficiency, high precision and good mechanical performance.

Description

technical field [0001] The invention relates to a device for processing large metal rings, which belongs to the technical field of metal processing machinery. Background technique [0002] With the development of my country's major equipment manufacturing industry, the demand for large-scale high-tube rings is increasing, such as oil-film bearing sleeves for large-scale rolling mills, high-pressure steam drums for large-scale thermal power boilers, coal liquefaction vessels, and safety covers for nuclear power reactors. As well as the heavy chemical industry, there is a large demand for large-scale high-tube rings. At present, there are relatively suitable equipment and very Mature technology. [0003] However, for the forging process of large-scale high-tube ring forgings with a height of H≥1000mm and a diameter of >3000MM, the large-scale heavy machinery factories in my country still use the free forging process with a history of more than 40 years to solve it, that is, ...

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Problems solved by technology

[0003] However, for the forging process of large-scale high-tube ring forgings with a height of H≥1000mm and a diameter of >3000MM, the large-scale heavy machinery factories in my country still use the free forging process with a history of more than 40 years to solve it, that is, use it on large hydraulic presses or hydraulic presses. The manipulator or the crane hoisting turning machine clamps the special mandrel and the auxiliary device to operate on the horse bar. This process has low work efficiency and large margin. The consumption is large, the fire consumption reaches 8-10% of the weight of the forging, and the cracks caused by forging are easy to occur inside the forging, and the metallographic structure of the forging is repeatedly heated, the grain size is large, and the mechanical properties are reduced. So far, it has not been specially used for the production of large-scale high It is inconsistent with the economical development policy

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