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Short flow-path production of copper and copper alloy precise pipe

A preparation process, copper alloy technology, applied in the field of metal material processing, can solve the problems of complex production process, large energy consumption, long process, etc., achieve the effect of shortening process, reducing energy consumption, and improving production efficiency

Active Publication Date: 2009-06-10
LUOYANG COPPER PROCESSING GROUP +1
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Problems solved by technology

[0003] There are two common production methods for precision copper tubes: ①Semi-continuous billet casting→hot extrusion→cold-rolled tube→coil drawing; ②horizontal continuous casting tube blank→skinning→cold-rolled tube→coil drawing The process and characteristics of tube production, Shanghai Nonferrous Metals, 1999, Vol.20, No.1, p.22-25; edited by Li Yaoqun and Yi Yinfei, Modern Copper Coil Production Technology, Metallurgical Industry Press, 2005]; Semi-continuous ingot casting and horizontal continuous casting billet have the advantages of mature production technology and stable product quality, but there are disadvantages such as complex production process, long process, large energy consumption and high cost

Method used

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Embodiment Construction

[0013] The preparation process of the precision pure copper tube with the size of φ10.0×0.6mm. The oxygen-free copper with a copper content of 99.99% is used as the raw material, and the oxygen content is less than 10 ppm. First, the oxygen-free copper is melted at 1250℃, and a bright thin-walled copper tube of φ39.0×2.0mm is prepared on a special continuous directional solidification equipment with a drawing speed of 100mm / min using the down-draw method. The bright thin-walled copper tube is directly coiled and drawn into a precision tube of φ10.0×0.6mm after 7 passes, and the extension coefficient of the drawing pass is between 1.35 and 1.45.

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Abstract

A short-path technology for preparing the precise copper or copper-alloy tube by precise conticasting includes such steps as smelting copper or copper alloy at 1150-1300 deg.C, continuous pulling while continuous directional solidifying to obtain the copper or copper alloy tube with 15-50 mm for external diameter and 1-5 mm for wall thickness, and drawing by 5-12 passes.

Description

Technical field [0001] The invention belongs to the technical field of metal material processing, and particularly provides a short-flow preparation process for copper and copper alloy precision pipes. Background technique [0002] Copper and copper alloy precision pipes are a type of typical high value-added copper processing materials, which are widely used in various fields of national economy and national defense and military industry. Such as copper pipes used in the electronics and power industries, threading sleeves in the telecommunications industry, copper water pipes in the construction industry, condenser tubes in the power and shipbuilding industries, water tank radiators in the automobile manufacturing industry, and evaporators and condensers in air conditioners and refrigerators. Tube and so on. In addition, the large-length hollow wires used to manufacture large motors, particle accelerators, and controlled fusion reaction devices also put forward higher requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/14B22D11/16B21C1/16B21C37/06
Inventor 谢建新娄花芬王自东胡萍霞张鸿董亚正康敬乐苗国伟符学智闫敏关保红蒋小亮
Owner LUOYANG COPPER PROCESSING GROUP
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