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Shortened method for producing oxygen-free copper belt

A production method and technology of oxygen-free copper, which is applied in the field of copper strip casting and processing, can solve the problems of high oxygen content, low efficiency, not as accurate as size and smoothness, etc., and achieves low oxygen content, short process flow and uniform size. Effect

Inactive Publication Date: 2009-08-12
SHANGHAI KANGCHENG COPPER GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hot rolling is the overlapping of two processes of work hardening and recrystallization. The coarse grains in the as-cast state are broken and elongated in the direction of metal flow during the deformation process, and thermal fiber structures are prone to appear, making the deformed metal It has different mechanical properties in the longitudinal and transverse directions, and has higher strength and plasticity along the direction of the fiber structure; it needs to be heated before hot rolling, and after hot rolling, the surface of the rolled piece produces scale and shrinks when cooled, so it is not as good as the size produced by cold processing Accurate and smooth; because hot rolling is not carried out under closed conditions, the product has high oxygen content, generally 0.02-0.04%; semi-continuous casting is less efficient than continuous casting

Method used

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  • Shortened method for producing oxygen-free copper belt
  • Shortened method for producing oxygen-free copper belt
  • Shortened method for producing oxygen-free copper belt

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A short-process oxygen-free copper strip production method, the specific steps are: the electrolytic copper plate is cleaned by a steel brush and then preheated and dried, then added to the melting chamber 1, melted at 1160 ° C, kept for about 15 minutes, and flowed through the launder to Insulation chamber 2 is kept at 1140°C, and the voltage is adjusted through a voltage regulator so that the temperature of the copper liquid in the insulation chamber 2 reaches the casting temperature, and the crystallizer 3 with circulating cooling water in the graphite mold is inserted into the copper liquid, and the cooling cycle The water inlet temperature is 25°C, the water pressure is 0.2Mpa, and it is drawn out with a dummy rod, and the solidified copper rod is continuously pulled out through the traction device 4, and is looped by the take-up device 5. During the production process, the melting chamber is evenly fed, and the heat preservation chamber is continuously drawn up for...

Embodiment 2

[0037] A short-process oxygen-free copper strip production method, the specific steps are: the electrolytic copper plate is cleaned by a steel brush, preheated and dried, and then added to the melting chamber 1. After melting at 1180 ° C, it is kept for about 15 minutes, and flows through the launder to Insulation cavity 2 is kept at 1160°C, and the voltage is adjusted through a voltage regulator so that the temperature of the copper liquid in the insulation cavity 2 reaches the casting temperature, and then the crystallizer 3 with circulating cooling water in the graphite mold is inserted into the copper liquid, and the cooling cycle The water inlet temperature is 35°C, the water pressure is 0.4Mpa, and it is drawn out with a dummy rod, and the solidified copper rod is continuously pulled out through the traction device 4, and formed into a loop by the take-up device 5. During the production process, the melting chamber is evenly fed, and the heat preservation chamber is conti...

Embodiment 3

[0041] A short-process oxygen-free copper strip production method, the specific steps are: the electrolytic copper plate is cleaned by a steel brush, preheated and dried, added to the melting chamber 1, melted at 1170 ° C, kept for about 15 minutes, and flowed through the launder to Insulation cavity 2 is kept at 1150°C, and the voltage is adjusted through a voltage regulator so that the temperature of the copper liquid in the insulation cavity 2 reaches the casting temperature, and then the crystallizer 3 with circulating cooling water in the graphite mold is inserted into the copper liquid, and the cooling cycle The water inlet temperature is 30°C, the water pressure is 0.3Mpa, and it is drawn out with a dummy rod, and the solidified copper rod is continuously pulled out through the traction device 4, and looped by the take-up device 5. During the production process, the melting chamber is evenly fed, and the heat preservation chamber is continuously drawn up for casting. Th...

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Abstract

The invention provides a short process oxygen-free copper strip production method which is characterized in that the method comprises the following steps: an electrolytic copperplate is cleaned and dried, melted and insulated; after an upward continuous casting step, a copper rod is obtained; a continuous squeezing step is carried out on the copper rod to obtain a strip stock; after cold rolling, annealing and post treatment, the strip stock is made into a copper strip finished product. An upward casting rod is used by the invention to be continuously squeezed into the strip stock. The upward casting rod is directly made into the thickness of the finished product by cold rolling without surface milling and middle annealing. The continuous bright non-oxidation annealing is realized under the protection of air. Hot water degreasing is adopted for substituting the natron degreasing. The advantages of the up-draw process and the continuous squeezing method are combined. The product has the advantages of low oxygen content, pure tissue, small grain and perfect comprehensive performance. The short process oxygen-free copper strip production method has the advantages of brief process, energy saving, environment protection, pollution-free and the like.

Description

Technical field [0001] The invention relates to a short-process oxygen-free copper strip production method and belongs to the technical field of copper strip casting and processing. Background technique [0002] The traditional oxygen-free copper strip production process mainly consists of the following two types: smelting-insulation-horizontal continuous casting-milling-rough rolling-annealing-pre-finish rolling-annealing-finish rolling-finished product annealing-cleaning, passivation and finishing-shearing. Cutting - packaging and storage, smelting - insulation - semi-continuous casting - heating - hot rolling - milling - rough rolling - annealing - pre-finishing rolling - annealing - finishing rolling - finished product annealing - cleaning, passivation and finishing - shearing - packaging Storage, referred to as two methods: horizontal continuous casting-cold rolling and semi-continuous casting-hot rolling-cold rolling. [0003] The horizontal continuous casting-cold ro...

Claims

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Application Information

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IPC IPC(8): B22D11/14B21C23/06B21C29/00
Inventor 徐恒雷杨卫良
Owner SHANGHAI KANGCHENG COPPER GROUP
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