Inner surface and outer surface protecting device in horizontal continuous casting tube bloom casting processing and operation method thereof

Abstract

The invention discloses an inner surface and outer surface protecting device in the process of casting horizontal continuous casting tube blooms, which comprises an outer surface protecting device and an inner surface protecting device, wherein the outer surface protecting device is arranged at the front end of a crystallizer and protects the outer surface of a tube bloom against oxidation, and the inner surface protecting device is arranged in the tube bloom and protects the inner surface of the tube bloom against oxidation. The invention also provides an operation method of the device. The device has a novel structural design, can minimize the loss of protective nitrogen and reduces the operation cost of horizontal continuous casting; and in the normal continuous casting process of a horizontal continuous casting machine, the tube bloom is always maintained to be not contacted with air under the protection of constant-pressure nitrogen above an oxidizing temperature so as to ensure the outer surface of a horizontal continuous casting copper or copper alloy tube bloom with the single-coil weight larger than or equal to 1100kg to be bright and non-oxidized, and high-efficiency short-process production and industrialization of copper and copper alloy tubes are realized.

Description

technical field [0001] The invention relates to the design and manufacture of non-ferrous metal billet melting and casting tooling, in particular to a protection device for inner and outer surfaces of a horizontal continuous casting billet melting and casting process and an operating method thereof. Background technique [0002] The copper and copper alloy tube billets cast by traditional smelting and casting equipment are directly in contact with air at the moment when they are pulled out of the crystallizer, and the inner and outer surfaces undergo oxidation reactions to form oxide films. For tube blanks without special requirements on length and surface, pickling can be used for treatment. However, for copper and copper alloy tubes with a single coil weight ≥ 1100kg, especially high-performance electronic copper tubes and high corrosion-resistant copper alloy tubes with a single coil weight ≥ 1100kg, the surface quality is far from meeting their use requirements. Conten...

AI Technical Summary

Problems solved by technology

However, for copper and copper alloy tubes with a single coil weight ≥ 1100kg, especially high-performance electronic copper tubes and high corrosion-resistant copper alloy tubes with a single coil weight ≥ 1100kg, the surface quality is far from meeting their use requirements.

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