Method for manufacturing metal composite pipe blank and device for manufacturing metal composite pipe blank

Abstract

The invention discloses a manufacturing method and a manufacturing device used for manufacturing a metal compound tube blank. The manufacturing method of the metal compound tube blank is that a metal tube blank made from a first metal is used as a guiding tube, a continuous casting method is adopted to manufacture the metal compound tube blank which adopts the metal tube blank made from the first metal as an inner tube and adopts a second metal whose melting point is less than that of the first metal as an outer tube. The invention also provides a device used for manufacturing the compound tube blank. The method disclosed by the invention realizes the compound of the first metal and the second metal and can manufacture metal compound tube blank with better interface capability. The device of the invention used for manufacturing the compound tube blank is suitable for manufacturing the metal compound tube blank.

Description

technical field [0001] The invention relates to a method for manufacturing a metal tube blank and a device for manufacturing a metal tube blank, in particular to a method for manufacturing a metal composite tube blank and a device for manufacturing a metal composite tube blank. Background technique [0002] In the air-conditioning and refrigeration industry, copper pipes are widely used as efficient heat transfer materials. However, due to the rising copper price in the past two years, it has brought greater cost pressure to the air-conditioning and refrigeration industry, seriously restricting the development of air-conditioning and refrigeration enterprises. [0003] Copper-aluminum composite pipe is a kind of metal composite pipe. The inner pipe is composed of copper or copper alloy pipe, and the outer pipe is composed of aluminum or aluminum alloy pipe. Since the instantaneous heat absorption capacity of copper is better than that of aluminum, but the heat dissipation cap...

AI Technical Summary

Problems solved by technology

The interface of the composite pipe prepared by the plastic cold composite molding method is mechanically combined, and the composite is usually achieved by local plastic deformation of the base material or the base and cladding materials. However, due to the presence of air between the inner tube and the outer tube, During plastic deformation, a large amount of heat is generated at the interface, the metal is easy to oxidize, and the interface bonding strength is relatively low. Especially when the copper-aluminum composite pipe is prepared by the plastic cold composite molding method, the oxidation of the interface will also seriously affect the thermal conductivity of the product. It is difficult to Give full play to the real utility of copper-aluminum composite pipe

The interface of the composite pipe prepared by the plastic thermal composite molding method can achieve metallurgical bonding. This type of composite pipe has high bonding strength, but the cost is too high, which will greatly increase the burden on the enterprise

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