Aluminum-carbon composite material used for tension-resisting joint fitting and preparing method of aluminum-carbon composite material

Abstract

The invention provides an aluminum-carbon composite material used for a tension-resisting joint fitting and a preparing method of the aluminum-carbon composite material. Aluminum powder and carbon powder dispersed in an organic solvent are evenly mixed, dried, subjected to ball grinding and pressed into an aluminum-carbon powder block; and the above aluminum-carbon powder block and an aluminum block are used as raw materials to be subjected to smelting, ingot casting, cogging and rolling, and a joint fitting material high in strength and resistant to loosening is obtained. The electric conductivity of the joint fitting prepared through the aluminum-carbon composite material is equivalent to that of pure aluminum. Due to the adding of carbon particles, the hardness, strength and high-temperature loosening resisting performance of the joint fitting are greatly improved. Due to the fact that carbon has very good stability in the atmosphere and does not form an alloy or a compound with aluminum, the corrosion resistance of aluminum is not obviously changed. Preparing steps are simple, operation is convenient, and practicability is high.

Description

technical field

[0001] The invention belongs to the technical field of electrical materials, in particular to an aluminum-carbon composite material for tension-resistant joint fittings and a preparation method thereof. Background technique

[0002] The increase of the voltage level, coupled with the complex and changeable external natural environment, causes overheating and corrosion of the connection fittings of the transmission line. Especially during the peak load period in summer, the thermal damage caused by the overheating of the crimping tube of the tension clamp and the diversion plate has become a prominent hidden danger to the safe operation of the power grid. The "Operation Regulations for Overhead Power Transmission Lines" (DL / T741) stipulates that the operating temperature of the strain clamp shall not be higher than the temperature of the wire (less than 70°C) by 10°C, and the relative temperature difference between the wire and the diversion device exceeds 35%...