Machining method for D-shaped copper pipes and D-shaped copper pipes

Abstract

The invention provides a machining method for D-shaped copper pipes. The method comprises the following steps that 1, a solid copper plate is prepared, wherein the length of the copper plate is not smaller than that of the D-shaped copper pipes, and the thickness of the copper plate is not smaller than the outer diameter of the D-shaped copper pipes; 2, the copper plate is prepared into arrays by adopting an extrusion technology, the interiors of the arrays are provided with D-shaped holes which are communicated in the length direction of the copper plate and arranged in the transverse direction, the shape and the size of each D-shaped hole correspond to those of an inner cavity of each D-shaped copper pipe, and the flat side face of each D-shaped hole faces to and is parallel to the lower surface of the copper plate; 3, the upper surface of the copper plate is prepared into the arc-shaped outer side faces of the D-shaped copper pipes by adopting a cutting technology, the lower surface of the copper plate is prepared into the flat outer side faces of the D-shaped copper pipes by adopting the cutting technology, and then the D-shaped copper pipes of which the number corresponds to that of the D-shaped holes are obtained. By means of the method, multiple D-shaped copper pipes can be simultaneously machined, and the machining efficiency is high.

Description

technical field [0001] The invention belongs to the field of nonferrous metal processing, and in particular relates to a processing method of a D-shaped copper tube and the D-shaped copper tube. Background technique [0002] D-type copper pipes are used in high-voltage power transmission and transformation and high-voltage power grids. They have the advantages of cross-regional, large-capacity, long-distance, and low-loss power transmission. Therefore, the application of D-type copper pipes can save line corridors and reduce the price of transmission unit capacity. At the same time, it also reduces the transportation cost, which is very meaningful in the current situation of China's energy shortage. [0003] In the prior art, the typical processing and manufacturing methods of D-type copper pipes, such as the patent No. CN101239361B: melting and casting, heating, extrusion, finishing, pickling, inspection, head making, stretching, straightening, cutting, Cleaning, finishing...

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Problems solved by technology

[0003] In the prior art, the typical processing and manufacturing methods of D-type copper pipes, such as the patent No. CN101239361B: melting and casting, heating, extrusion, finishing, pickling, inspection, head making, stretching, straightening, cutting, Cleaning, finishing, inspection, warehousing; the extrusion process and drawing process are: using transitional similar D-shaped tube extrusion and transitional similar D-shaped tube stretching and finished product stretching to replace the previous round copper Extrusion and stretching process methods in pipe processing; the processing object is a single copper pipe, and the processing method is complicated so that the processing efficiency is low

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