Explosive welding method for copper-aluminum transition wire clamp

Abstract

The invention discloses an explosive welding method for a copper-aluminum transition wire clamp. The explosive welding method comprises the following steps that the surfaces of copper blanks are polished, so that the bonding surfaces of the copper blanks have metallic luster, and the surfaces are smooth and flat; the surfaces of covering materials are polished, so that the bonding surfaces of the covering materials and base materials have metallic luster, and the surfaces are smooth and flat; the multiple copper blanks are evenly placed on a bottom plate with the bonding surfaces facing upwards, and supporting objects are placed at the corners of the bottom plate; required explosives are evenly laid in explosive grooves in the upper surfaces of the covering materials, and the detonation velocity of the explosives is 2000 + / -50 m / s; the positions, close to the end parts of the blanks, in the middles of the long sides of the covering materials are set as detonation points; and the explosives are detonated through detonating devices, explosive welding is completed, and copper-aluminum transition wire clamp semi-finished products produced in a large scale are obtained. Explosive welding can be carried out on the plurality of copper blanks on a welding bench at the same time after the copper blanks are spaced, and the manner is simple, few manpower and material resources are invested, and the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of explosive welding processing, in particular to an explosive welding method for copper-aluminum transition clips. Background technique [0002] As a typical copper-aluminum connection device widely used in the power industry, copper-aluminum transition clamps have a lot of space for use, but at this stage the main production methods for their products are as follows: flash welding, friction welding, brazing and explosion weld. The copper-aluminum transition clamps manufactured by flash welding and friction welding are prone to welding defects such as misalignment, lack of fusion and inclusions due to the production process. These defects often cause problems such as stress concentration, which not only reduces the strength of the copper-aluminum transition clamp, but also easily evolves into a source of cracks or corrosion. The problems of brazing wire clips are that the interface of brazing joints is no...

AI Technical Summary

Problems solved by technology

Copper-aluminum transition clamps manufactured by flash welding and friction welding are prone to welding defects such as misalignment, lack of fusion and inclusions due to the production process

These defects often cause problems such as stress concentration, which not only reduces the strength of the copper-aluminum transition clamp, but also easily evolves into a source of cracks or corrosion

The problems of brazing wire clips are that the interface of brazing joints is not fused, and the interface intermetallic compound is hard and brittle during the welding process. Explosive welding, as a traditional production process, has a high risk in the production process of copper-aluminum transition wire clips. Application, due to the complex production process, this method has more supply and demand for post-processing, and the input of manpower and material resources is relatively large, resulting in increased production costs and low production efficiency

unable to reach mass production

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