Large-diameter high-purity oxygen-free copper cast blank horizontal continuous casting process and connected furnace

A horizontal continuous casting, oxygen-free copper technology, applied in the field of oxygen-free copper casting, can solve the problems of difficult control of oxygen content, low production efficiency, high production cost, etc., and achieve high yield, low cost, strong deoxidation and dehydrogenation Effect

CN103464709AInactive Publication Date: 2013-12-25JIANGSU XINGRONG MEILE COPPER IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-12-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a large-diameter high-purity oxygen-free copper cast blank horizontal continuous casting process. An oxide layer and particles are removed from the standby cathode copper surface, in addition, preheating treatment is carried out, and the preheating temperature is controlled to be 280 DEG C to 300 DEG C; pretreated cathode copper is placed into a smelting furnace to be smelted, the smelting temperature is controlled to be 1180 to 1230 DEG C, inert gas is introduced into the bottom of the smelting furnace, a calcined charcoal layer floats above molten copper to be used as the coverage, and the molten copper is stirred through electromagnetic stirring; then, the smelted molten copper flows into a heat insulation furnace, inert gas is introduced into the bottom of the heat insulation furnace, the calcined charcoal layer floats above molten copper to be used as the coverage, and the temperature inside the heat insulation furnace is controlled to be 1180 to 1230 DEG C; the molten copper in the heat insulation furnace is guided out, a graphite crystallizer is subjected to water cooling, and high-purity oxygen-free copper cast blanks are obtained. The process has the advantages that the oxygen content of the cast blanks can be effectively controlled, the production cost is reduced, products can completely reach TU1 standards, and the yield can reach more than 90 percent.
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Description

technical field

[0001] The invention relates to the technical field of oxygen-free copper casting, especially in the field of high-purity oxygen-free copper, and provides a large-diameter high-purity oxygen-free copper billet horizontal continuous casting process and a connected furnace. Background technique

[0002] Industrial pure copper (processed copper) is usually divided into tough copper, phosphorus deoxidized copper and oxygen-free copper, of which oxygen-free copper is the highest quality grade, oxygen-free copper is a kind of high-conductivity pure copper, with high purity in chemical composition, The impurity content is low, especially the oxygen content is very low. Its most notable physical characteristics are high electrical conductivity (at least 100% IACS in the annealed state), good deformation properties and good welding and brazing properties. It is widely used It is used in fields such as electronics, communication and electric vacuum.

[0003] TU1 (GBT5...

Examples

Embodiment

[0039] refer to figure 2 image 3 The conjoined furnace used in this embodiment includes a melting furnace 1, a holding furnace 2 and a crystallizer 7. The bottom of the melting furnace 1 is connected to the bottom of the holding furnace 2 through a pipeline, and the pipeline communicating between the melting furnace 1 and the holding furnace 2 includes The main channel 3-1 and the branch channel 3-2, one end of the main channel 3-1 communicates with the smelting furnace 1, and the other end flows into the holding furnace 2 through two branch channels 3-2.

[0040] like figure 2 , the smelting furnace 1 and the holding furnace 2 are provided with a bamboo charcoal layer 6, the molten liquid outlet of the holding furnace 2 is connected to the graphite crystallizer 7, the graphite crystallizer 7 is equipped with a spiral water jacket 8, and the spiral water jacket 8 has a cooling water outlet 8-1 and cooling water inlet 8-2.

[0041] The melting channel in the holding furna...