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Process for producing bright thin-wall copper pipe through up-draw method

A production process and technology for copper tubes, which are applied in the production process of thin-walled bright copper tubes by the upward drawing method, can solve the problems of complex process, long cycle and high product cost, and achieve excellent performance, low cost and energy consumption, and high precision. Effect

Inactive Publication Date: 2018-01-05
ZHONGTIAN ALLOY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of producing copper pipes has long period, complicated process and high product cost.

Method used

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Embodiment Construction

[0030] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments.

[0031] The production process of a kind of up-drawing thin-walled bright copper tube disclosed by the present invention comprises the following steps:

[0032] a, copper raw material smelting: select electrolytic copper and red copper scrap as copper raw material, wherein electrolytic copper accounts for 70-75% by weight, and red copper scrap accounts for 25-30% by weight, copper raw material is added in the melting furnace, and The surface is covered with dry charcoal with a thickness of 100-150mm, and its sulfur content is less than 0.5%. 1150±10℃;

[0033] b. Upward continuous casting oxygen-free copper pipe: When the liquid level in the holding furnace reaches the specified position, introduce the copper liquid in the holding furnace into the mold to form a copper billet, control the temperature of the cooling water in the mold...

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PUM

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Abstract

The invention discloses a process for producing a bright thin-wall copper pipe through an up-draw method. The process comprises the steps of cathode copper smelting, up-drawing and continuous castingof oxygen free copper tube, tube rolling, bull block drawing, compound wound cleaning, annealing and drawing. The invention provides the process for producing the bright thin-wall copper pipe throughthe up-draw method. A copper-tube bus produced through the process has the advantages of small dimension error, high electric conductivity, good thermal diffusivity and strong mechanical capacity, hasthe copper content higher than or equal to 99.99 percent, the oxygen content lower than or equal to 10 PPM, and dimension error less than or equal to + / -0.05m, and the electric conductivity higher than or equal to 100 percent IACS.

Description

technical field [0001] The invention relates to a production process of a copper tube, in particular to a production process of an up-drawing thin-walled bright copper tube. Background technique [0002] With the rapid development of electrical and air-conditioning industries, the requirements for wire and cable and air-conditioning pipe products are also getting higher and higher. The traditional copper tube production method——extrusion method is to extrude a continuous casting solid billet into a tube billet, and then process it into a tube by drawing. This method for producing copper pipes has a long period, complicated process and high product cost. Using the upward drawing method to cast the billet has the following characteristics. The uniformity of the radial grain distribution of the billet is good, and the proportion of equiaxed grains is relatively high. Therefore, the billet pipe is suitable for both cold processing and hot processing; the length of the billet I...

Claims

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Application Information

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IPC IPC(8): B23P15/00
Inventor 申晓强闫晨张达陈荣荣顾凯越
Owner ZHONGTIAN ALLOY TECH
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