Method for processing copper tube having circular inside and quadrate outside

A processing method and external technology, applied in the field of inner circle and outer square copper pipe processing, can solve the problems of limited product length, large investment scale, low production efficiency, etc., and achieve the effect of excellent product quality, short process and high production efficiency

Inactive Publication Date: 2012-07-18
浙江力博实业股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The traditional production process of inner circle and outer square copper pipes has disadvantages such ...

Method used

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  • Method for processing copper tube having circular inside and quadrate outside
  • Method for processing copper tube having circular inside and quadrate outside
  • Method for processing copper tube having circular inside and quadrate outside

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Embodiment 1

[0024] A method for processing an inner circle and outer square copper tube in this embodiment includes the following steps: 1) Using the No. 1 cathode copper stipulated by the national standard, the high-purity cathode copper with a copper content of not less than 99.99% is used as a raw material and first heated at 1150 ° C ± 10 Melting and heat preservation at ℃ temperature, the vacuum state during melting is realized by covering with wood charcoal and graphite phosphorus sheet, adopting the copper liquid refining technology, using the online degassing and deoxidizing device, filling the copper liquid with inert gas, and the inert gas is argon Or nitrogen, using graphite shaft and rotor as a stirring device, press argon or nitrogen into the copper liquid and break it into tiny bubbles, so that they can be evenly dispersed in the copper liquid; the outlet pressure of the gas source is 0.5-1MPa, and the flow rate is 0.5-1 .5Nm 3 / n. Only when degassing, deoxidation, and high...

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Abstract

The invention discloses a method for processing a copper rube having a circular inside and a quadrate outside. The method comprises the steps of: 1) adopting high-pure cathode copper as a raw material and vacuum up-drawing in a clutch type way and continuously casting an oxygen-free copper rod by using a dragger group; 2) processing the oxygen-free copper rod from step 1) to form a copper tube blank having the circular inside and the quadrate outside by a continuous extruding machine group; 3) stretching the copper tube blank having the circular inside and the quadrate outside formed in step 2) by a high-precision stretcher; 4) annealing the stretched copper tube blank having the circular inside and the quadrate outside obtained in step 3) by bright annealing equipment; and 5) inspecting and packing the annealed copper tube blank having the circular inside and the quadrate outside obtained in step 4). The method provided by the invention has the characteristics of being low in energy consumption, high in yield, high in production efficiency, and long in the product length. In the method, the sum of content of copper and silver is not less than 99.99%; the content of oxygen is not more than 5ppm, and the electric conductivity is not less than 101% IACS (International Annealed Copper Standard).

Description

technical field [0001] The invention relates to a method for processing an inner circle and outer square copper tube, which belongs to the technical field of nonferrous metal processing. Background technique [0002] The copper tube with inner circle and outer square has the characteristics of large conductive cross-section, large flow rate of cooling medium per unit time, and good heat dissipation performance. It is used by the atomic energy industry and the electrical machinery industry as a key material for manufacturing various motors and accelerators. [0003] Copper tubes with inner circle and outer square are generally processed by one of the following five traditional techniques: [0004] A: Ingot casting—extrusion tube billet—rolling—intermediate annealing—stretching—annealing; [0005] B: Ingot casting—extrusion tube billet—stretching—annealing; [0006] C: ingot casting - piercing - rolling (stretching) - annealing; [0007] D: cast pipe - rolling - intermediat...

Claims

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Application Information

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IPC IPC(8): B21C37/06B21C23/00
Inventor 徐高磊姚幼甫骆越峰
Owner 浙江力博实业股份有限公司
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