Aluminum alloy ring piece rolling technique and device

Abstract

The invention relates to a method and equipment for processing metal material, particularly to a technology and equipment for rolling superlarge-diameter aluminium alloy ring pieces. The method and the equipment are characterized in that the rolling technology comprises the following steps: A. calculating parameters: calculating technical control parameters including the dimensions of a roughcast, the rolling linear speed, the radial-axial rolling force during various stages, the enlargement rate of the ring pieces, the radial-axial feed speed, the external diameter of the ring pieces, the height of the ring pieces and the wall thickness of the ring pieces according to the dimensions of a product ring; B. inputting parameters: inputting the various technical control parameters into a numerical control ring rolling mill computer according to the calculation results; C. numerically controlled rolling: fully automatic control is adopted during the rolling process. A radial rolling mechanism and an axial rolling mechanism are connected on the chassis of the equipment; and the radial rolling mechanism is connected with a king roller drive mechanism (1) and a core roller mechanism (7). The axial rolling mechanism is connected with an axial roller drive mechanism (14). The technology and the equipment for rolling superlarge-diameter aluminium alloy ring pieces lead to smooth rolling process and high-precision of the dimensions of product rings.

Description

technical field [0001] The invention relates to a metal material processing method and equipment, in particular to a rolling process and equipment for super-large aluminum alloy rings. Background technique [0002] Aluminum alloy materials are high in strength and light in weight, and are widely used in my country's aviation and aerospace industries. However, the forging temperature range of aluminum alloy materials is narrow, and some materials are soft and sticky; some materials are hard and brittle, which makes the process of producing aluminum alloy ring parts more difficult. The traditional method of processing aluminum alloy ring parts in China is mostly forging by free forging on hydraulic presses, which has poor precision, low efficiency, high labor intensity, low material utilization, limited outer diameter of ring parts, and the maximum diameter of billet making capacity. In addition, the larger the diameter of aluminum alloy ring parts is, the more difficult it i...

AI Technical Summary

Problems solved by technology

However, the forging temperature range of aluminum alloy materials is narrow, and some materials are soft and sticky; some materials are hard and brittle, which makes the process of producing aluminum alloy ring parts more difficult.

The traditional method of processing aluminum alloy ring parts in China is mostly forging by free forging on hydraulic presses, which has poor precision, low efficiency, high labor intensity, low material utilization, limited outer diameter of ring parts, and the maximum diameter of billet making capacity. In addition, the larger the diameter of aluminum alloy ring parts is, the more difficult it is to control the rolling process, and the higher the technical requirements, the recently published patent No. 200410060885.0 provides a continuous rolling aluminum alloy ring However, its technical effect is still not up to the quality requirements of large-diameter and high-strength precision aluminum alloy ring parts required by the aviation and aerospace industries. Especially for the rolling of aluminum alloy ring parts with a diameter of 5 meters, there is an urgent need for a Advanced technology to solve

[0003] At present, the largest ring diameter that domestic ring rolling equipment can roll is 3 meters. The limitations of this ring rolling equipment are: ① It cannot be used to roll rings of different materials, and the material of the ring is a single steel

The line speed of the main roll of the domestic ring rolling machine is not adjustable, and the equipment capacity cannot be fully utilized

[0004] ②The loading and unloading of the ring rolling machine is done vertically, and there is no core roller lifting device

It is especially not suitable for cutting large rings and thin-walled rings, and the vertical cutting of large rings and thin-walled rings is easy to deform

[0005] ③ Most of the axial rolls of the ring rolling machine adopt the transmission structure of the lower axial roll to drive the upper axial roll. The control system of this structure is simple, but the precision of the finished ring is poor

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