Rolling forming method for disc-type section forging

Abstract

The invention relates to a rolling forming method for a disc-type section forging, which comprises the following steps: heating an alloy ingot to a temperature of 1150-1180 DEG C; improving the cast structure of the alloy ingot through upsetting and stretching; conducting punching, reaming and rounding processes to manufacture an annular plate blank with a thickness of 1 / 2 of a final height; feeding the annular plate blank into a furnace and heating the annular plate blank to the temperature of 1150-1180 DEG C, taking out the annular plate blank and placing the annular plate blank on a ring mill; carrying out a process that a main roller bushing is sleeved with the main roller, and a core roller bushing is sleeved with the core roller; switching on the ring mill, the ring mill starts to rotate under the driving of the main roller and the core roller, pressing the tapered rollers a and b on two end surfaces of a prefabricated blank respectively, starting to roll, and switching off the ring mill after the size is in place to obtain the ring-milled special-shaped ring piece. By the adoption of the rolling forming method for the disc-type section forging, a utilization rate of the material is greatly improved; and after heat treatment, only small-margin mechanical processing is required, without cutting off metal fibers, so that the service life and the comprehensive performance ofa product are improved, and the manufacturing period is short.

Description

technical field [0001] The invention belongs to the technical field of forging, and mainly relates to a method for rolling and forming a disc-like section forging. Background technique [0002] The forging of the present invention is a key part of a certain equipment, such as figure 1 shown. The material is aluminum alloy. Due to the irregular shape, the height is much smaller than the wall thickness, and many places are irregular curved surfaces, so forging is very difficult. [0003] There are two conventional manufacturing methods: [0004] Method 1: Forging the forging into a ring according to the contour size, and then machining; [0005] Method 2: Forge a ring first, then bend it on a hydraulic press through a mold, and then machine it; [0006] However, due to the large size of the forging, more than 6,000 tons of hydraulic presses are required for forming. Due to the particularity of the structure, the material utilization rate of the existing method is very low...

AI Technical Summary

Problems solved by technology

[0006] However, due to the large size of the forging, more than 6,000 tons of hydraulic presses are required for forming

Due to the particularity of the structure, the material utilization rate of the existing method is very low (about 20%). At the same time, after a large margin of machining, the metal fiber is cut off, which reduces the service life and comprehensive performance of the product, and the manufacturing cycle is long.

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