Horizontal continuous casting graphite crystallizer

Abstract

The invention discloses a horizontal continuous casting graphite crystallizer, which comprises an outer sleeve body and an inner core; the tail end of the inner core is connected with the rear end ofthe outer sleeve body; a ring-shaped channel is arranged between the inner core and the outer sleeve body; a liquid inlet which is communicated with the ring-shaped channel is formed on the bottom wall of the rear end of the inner core; the shaft part of the inner core includes a first action part and a second action part, which are connected in sequence from the tail end of the shaft part to thefront end thereof; the cone angle Alfa of the first action part is larger than the cone angle Beta of the second action part; and the ratio of the cone angle Alfa to the cone angle Beta is equal to orlarger than 2.5. The connecting part between the first action part and the second action part is smooth transition. Copper roughcasts continuously cast by the continuous casting graphite crystallizerhave smooth inner surfaces without crystal lines, thus improving the shaping quality of roughcasts, eliminating hidden quality troubles, and being favorable for further deep processing for shaping.

Description

technical field [0001] The invention relates to a horizontal continuous casting graphite crystallizer. Background technique [0002] At present, there are basically two kinds of finishing processes for copper pipe billets at home and abroad, one is continuous casting and rolling, and the other is extrusion. Due to the low level of extrusion technology, large eccentricity of products, light weight, low yield, high cost and high energy consumption, the extrusion method will gradually withdraw from the market in the fierce competition. Compared with the traditional extrusion method, the continuous casting and rolling method has the characteristics of low cost, low energy consumption, high efficiency, and high yield, so it has developed rapidly, but there are also the following problems in the production process: due to There are problems in the structural design of the currently used graphite crystallizer. There are crystallization lines on the inner surface of the cast slab p...

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Problems solved by technology

Compared with the traditional extrusion method, the continuous casting and rolling method has the characteristics of low cost, low energy consumption, high efficiency, and high yield, so it has developed rapidly, but there are also the following problems in the production process: due to There are problems in the structural design of the currently used graphite crystallizer. There are crystallization lines on the inner surface of the cast slab produced by continuous casting and rolling technology. The existence of this defect will easily produce processing traces on the inner surface of the pipe product. Post-processing traces are particularly obvious, and a large amount of peeled copper powder is prone to appear during the plastic forming process, which will cause many problems when applied to end products, such as "" If it is serious, it will cause leakage and scrapping of the two air-conditioning products; and because it is easy to produce processing traces or a large amount of copper powder peeling off on the inner surface of the pipe products, it also limits the use of such products in pipe valves. Use in facilities and further further processing

In order to solve the defects of crystallization lines during molding, technicians also tried to design the inner core of the crystallizer as a structure with the same cone angle and shrink along the exit direction, and adopted a reverse push process to reduce the generation of crystallization lines, but it was not yet very good. Solve the problem of eliminating the crystallization line on the inner surface of the slab

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