Thermal compounded steel-aluminum compounded conductive rail and manufacturing method

Abstract

The invention relates to a heat-composite steel-aluminum composite conductive rail and a manufacturing method thereof, belonging to equipment for supplying power to the third rail of urban rail transit. It mainly adopts steel side knurling, and the inner side of the two lugs of the corresponding aluminum rail has wavy intersecting ribs and grooves. It is heated in the uniform temperature tube of the tunnel kiln, and multiple pairs are arranged in the middle of the steel-aluminum composite production line. After the special burner is used to control the aluminum lugs to be in a superplastic deformation state, 4 pairs of upper, lower, left, and right pressure wheels of the production line exert force to make the lugs rotate and move inward, and the protruding ribs of the lugs are squeezed into the knurls on the side of the stainless steel In the tank, the thermal compounding of steel and aluminum is completed, followed by T6 heat treatment and aging treatment, so that the steel-aluminum composite conductive rail has low resistance, high strength, small contact resistance, high-speed production and high yield.

Description

technical field [0001] The invention discloses a thermally composited steel-aluminum composite conductive rail and a manufacturing method thereof, which belong to equipment used for power supply of the third rail of urban rail transit. Background technique [0002] Before the present invention was made, in the existing third rail power supply equipment of urban rail transit, the steel-aluminum composite conductive rail was mostly formed by stamping, riveting or welding, the contact resistance between steel and aluminum was large, and the combination of steel and aluminum was not firm enough. 201520437654.0’s heat-composite steel-aluminum composite conductor rail has the advantages of firm combination of steel and aluminum, but the processing technology is complicated, the superplastic deformation process of the aluminum profile lug is not easy to control, the yield is low, and the crescent-shaped gap on the side of the stainless steel tank The processing is troublesome and t...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages that the superplastic deformation process of aluminum profiles is not easy to control, and to overcome the shortcomings of low productivity and low yield of steel-aluminum composite conductor rails, and to invent a thermal composite that can well control the superplastic deformation process of aluminum profiles. The manufacturing method of the steel-aluminum composite rail, and then invented a steel-aluminum composite conductive rail that can be produced efficiently and has a high yield, so that the steel and aluminum are firmly bonded, and the contact resistance between the steel and aluminum is small

Images