Method for manufacturing steel-aluminum composite conductor rail

Abstract

The invention discloses a method for manufacturing a steel-aluminum composite conductor rail, comprising the following steps of: a) preparing an aluminum rail: preparing an I-shaped aluminum rail by a mould through hot extrusion molding, wherein the two side surfaces of the upper end of the aluminum rail are provided with grooves; b) prefabricating a C-shaped stainless steel strip: cutting a stainless steel coil into stripy stainless steel strips, and cold bending and rolling by a cold bending unit to form a stainless steel strip with a C-shaped section, wherein the formed stainless steel strip comprises a base part, a first bending part, a second bending part and a clip part, the first bending part is formed by extending from the two sides of the base part and bending downwards, the second bending part is formed by extending from the first bending part and bending inwards, and the clip part is formed by extending from the second bending part; and c), compounding the C-shaped stainless steel strip and the aluminum rail, wherein the clip parts at two ends of the C-shaped stainless steel strip are embedded in the grooves on the two sides of the upper end of the aluminum rail, and the C-shaped stainless steel strip is completely attached to the upper part of the aluminum rail. According to the method in the invention, the stainless steel strip and the aluminum rail are closely combined, the combined surface is large, the transition resistance is small, deformation is not liable to occur after forming, a local heating mode is adopted during rolling compounding to facilitate forming, machining is not needed after rolling forming, and the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to conductive rail technology, in particular to a manufacturing method of a steel-aluminum composite conductive rail. Background technique [0002] With the development of the times, in order to reduce current loss, increase the primary transmission distance of the conductor rail, reduce mechanical wear and electrical corrosion, and improve economic and social benefits, a new type of conductor rail—steel rail—appeared in the late 1970s. Aluminum composite conductor rail. It is widely used at home and abroad because of its good electrical conductivity, large current capacity, light weight, easy installation, good wear resistance and corrosion resistance, and long service life. [0003] In this case, the composite form of steel and aluminum determines the performance of the conductor rail. The existing steel-aluminum composite forms in this field include riveting type, welding type and co-extrusion type. [0004] The "steel-alumi...

AI Technical Summary

Problems solved by technology

[0008] 1) The combination between the stainless steel strip and the aluminum rail is not tight, and a gap is easily formed, resulting in an increase in contact resistance;

[0009] 2) The preparation method is complex, difficult, low yield and low production efficiency;

[0010] 3) High investment in production equipment and high production costs;

[0011] 4) After the conductor rail is formed, it is easy to deform due to vibration and other factors, and the life of the conductor rail is low

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