Steel-aluminum composite contact rail and manufacturing method thereof

Abstract

The invention relates to a steel-aluminum composite contact rail, comprising an aluminum alloy guide rail main body. The steel-aluminum composite contact rail is characterized in that a stainless steel belt is arranged on the working face of the aluminum alloy guide rail main body. Meanwhile, solder layers are distributed at the contact end of the working surface of the stainless steel belt and the aluminum alloy guide rail main body. In a manufacturing process, a containing groove is machined on the working end face of the aluminum alloy guide rail main body; solders are paved in the containing groove to form the solder layer; the stainless steel belt is paved on the solder layer; and the stainless steel belt and the aluminum alloy guide rail main body are mutually combined through high-temperature welding. The steel-aluminum composite contact rail provided by the invention has the advantages of novel and simple structure and lower production cost. Meanwhile, two metals are mutually fused on a metal structure by using a welding technique to remove material contact resistance, so that the contact rail has a good conduction property. The steel-aluminum composite contact rail provided by the invention has a large friction face. Furthermore, the large friction face is an entire stainless steel face, so that electric corrosion is difficult to generate, and the steel-aluminum composite contact rail has high wear resistance and high durability. Furthermore, the effective combination of the stainless steel belt and the aluminum alloy guide rail main body is ensured due to the solder layer.

Description

technical field [0001] The invention relates to a contact rail and a manufacturing method thereof, in particular to a steel-aluminum composite contact rail and a manufacturing method thereof. Background technique [0002] The steel-aluminum composite contact rail used in urban rail transit as a power supply system can be roughly divided into three categories. One is the molded steel-aluminum composite contact rail. The process is complicated, the efficiency is low, and the cost is high. The second type is the half-clad riveting type of stainless steel belt. This product has a small contact surface, the contact surface is two different materials and there is a gap in the middle, which is prone to problems such as electric corrosion. The third type is the all-inclusive welding type of stainless steel strip. This product is difficult to weld thicker stainless steel plates and the local structure and properties of steel and aluminum materials change after welding, which will aff...

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Problems solved by technology

[0002] The steel-aluminum composite contact rail used in urban rail transit as a power supply system can be roughly divided into three categories, one is the molded steel-aluminum composite contact rail, which has complex procedures, low efficiency and high cost

The second type is the half-clad riveting type of stainless steel belt. This product has a small contact surface, the contact surface is made of two different materials, and there is a gap in the middle, which is prone to electrical corrosion and other problems.

The third type is the all-inclusive welding type of stainless steel strip. This product is difficult to weld thicker stainless steel plates and the local structure and properties of steel and aluminum materials change after welding, which will affect the shape and surface quality before compounding, and it is difficult to weld. Eliminate the shortcomings that affect the overall quality of the steel-aluminum composite rail

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