Forging forming technology for extra-high voltage composite insulator groove-shaped hardware

Abstract

The invention relates to a forging forming technology for an extra-high voltage composite insulator groove-shaped hardware, which mainly consists of three steps of heating, blanking and stamping, wherein the forming technology is utilized to forge the round steel blank into a groove-shaped hardware which has a double-lug structure at the end part of a rod body; and the innovative points lie in that: in the blanking technology, the round steel blank is flattened via a hydraulic machine, an oxide layer which is produced on the surface of the blank due to heating during the flattening process is removed, and the thickness of the flattened round steel blank is between the thicknesses of the external and the internal outlines of the double lugs of the groove-shaped hardware. The invention has the advantages that: during the blanking process, the thickness of the flattened round steel blank is controlled between the thicknesses of the external and the internal outlines of the double lugs of the groove-shaped hardware, so the subsequent stamping quality is greatly improved, the finished product ratio is ensured, the production cost is effectively reduced, and the enterprise competitiveness is improved.

Description

technical field [0001] The invention relates to a forming process for slot-type metal fittings of an ultra-high voltage composite insulator, in particular to a forging forming process for slot-type fittings of an ultra-high voltage composite insulator. Background technique [0002] UHV composite insulator slot fittings are used for the connection of high voltage lines on both sides of the railway, which consists of two ears at the end of the rod body. At present, there are two ways to produce this kind of groove-shaped fittings: one is the method of casting, and its disadvantages are: the internal structure is loose, there are defects such as shrinkage cavities, cracks, etc., the quality cannot meet the requirements, and there are large safety hazards , and more scrapped. The forging method can also be used. The forging process is mainly composed of three steps of heating, billet making and stamping. In the traditional forging process, the billet is slightly flattened in or...

AI Technical Summary

Problems solved by technology

At present, there are two ways to produce this kind of groove-shaped fittings: one is the method of casting, and its disadvantages are: the internal structure is loose, there are defects such as shrinkage cavities, cracks, etc., the quality cannot meet the requirements, and there are large safety hazards , and more waste

The forging method can also be used. The forging process is mainly composed of three steps of heating, billet making and stamping. In the traditional forging process, the billet is slightly flattened in order to remove the oxide layer produced by surface heating without reducing the thickness. Control, forged groove-shaped fittings are prone to insufficient punching, resulting in scrapped products, high energy consumption, low yield, and high manufacturing costs

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