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Copper and aluminum composite pipe of refrigerating machine and processing technology thereof

A technology of copper-aluminum compounding and processing technology, which is applied in the direction of layered products, chemical instruments and methods, and metal layered products, which can solve the problems of declining benefits and achieve the effects of low processing costs, cost reduction, and copper resource saving

Inactive Publication Date: 2014-11-12
HEFEI GREAT WALL REFRIGERATION TECH
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AI Technical Summary

Problems solved by technology

The processing cost of copper pipes has dropped to an unacceptable level, and the benefits of various copper pipe enterprises have gradually declined

Method used

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Embodiment Construction

[0016] A copper-aluminum composite tube for a refrigerator and its processing technology, characterized in that: the outside of the copper-aluminum composite tube is rust-proof aluminum alloy, the inside is oxygen-free copper, and the copper-aluminum composite tube is an interatomic metal bonding layer; The processing technology is:

[0017] (1) Continuous casting of copper-aluminum tube blanks: use high-efficiency copper-aluminum tube blank continuous casting equipment to cast tube blanks of the required size using a horizontal composite continuous casting process;

[0018] (2) Rolling process: hot rolling the tube billet to form a metallurgical bonding layer on the copper-aluminum composite surface to obtain a copper-aluminum composite pipe, and the rolling temperature is 120-150°C;

[0019] (3) Stretching: Copper-aluminum composite pipes are stretched at high speed by a coil drawing machine to achieve ultra-long and efficient production;

[0020] (4) Flaw detection: the co...

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Abstract

The invention discloses a copper and aluminum composite pipe of a refrigerating machine and a processing technology of the copper and aluminum composite pipe. The processing technology of the copper and aluminum composite pipe is characterized by comprising the steps of continuous casting of a copper and aluminum pipe blank; rolling process; stretching; flaw detecting; and annealing. Defects in the prior art are overcome; the outer side of the provided copper and aluminum composite pipe is provided with an anti-rust aluminum alloy, the inner side of the provided copper and aluminum composite pipe is provided with oxygen-free copper, and an interatomic metallic bonding layer is arranged between copper and aluminum, the pipe blank is cast by using a continuous casting technology for the copper and aluminum pipe blank, and then, a metallurgical bonding layer is formed on a copper and aluminum composite surface by using a hot rolling technology; and the copper and aluminum composite pipe is low in processing cost and can be widely applied into the refrigerating machine such as an air conditioner, a refrigerator to replace a copper pipe, so that a great number of copper resources are saved, and the cost of the refrigerating machine is reduced.

Description

technical field [0001] The invention relates to the technical field of refrigerating machine copper tubes, in particular to a refrigerating machine copper-aluminum composite tube and a processing technology thereof. Background technique [0002] After several years of development, the production capacity of precision copper tubes is greater than the demand. The processing cost of copper pipes has dropped to an unacceptable level, and the benefits of various copper pipe enterprises have gradually declined. How to develop new materials for refrigeration and air-conditioning, help the air-conditioning industry reduce production costs, improve product quality, enhance technological competitiveness, and expand the living space of pipe production is a severe test for enterprises. Contents of the invention [0003] The object of the present invention is to provide a copper-aluminum composite pipe for refrigerators and its processing technology. The outside of the copper-aluminum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/06B32B15/01B32B15/20
Inventor 马功权田四光李多春
Owner HEFEI GREAT WALL REFRIGERATION TECH
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