Preparation method for copper strip for flexible connection

A technology of red copper strip and soft connection, applied in milling machine equipment, metal rolling, metal rolling and other directions, can solve the problems of large heat convection interlayer transfer resistance, long heat preservation time, interlayer bonding and other problems, and achieve good internal organization, The effect of small grains and easy processing

Active Publication Date: 2019-10-18
中色正锐(山东)铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In actual production, the bell furnace is mostly used for uniform annealing of blanks, thick strip annealing after rough machining, and intermediate annealing. However, since the strips for intermediate annealing are mostly coiled under the tension of the rolling mill, the coil layers are tightly packed. , when annealing in a bell furnace, the interlayer transfer resistance of heat convection is relatively large, so the proportion of heat conduction is large, and the holding time must be long, so it is easy to produce interlayer bonding when annealing in a bell furnace
Air-cushion continuous annealing furnace has the advantages of short production cycle, high efficiency, uniform annealing, continuous and rapid annealing, and avoiding the annealing and sticking phenomenon of thin strip finished products compared with bell-type furnace. Since such a long strip is in the heating zone, sufficient tension must be given, otherwise the strip will scratch the surface due to hanging down, and if the tension is too high, it is easy to break or wrinkle. The running speed in the furnace is as high as 80m / min or more, coupled with the influence of the plate shape, it is more difficult to realize the stable control of small tension in the furnace, so the broken belt often occurs, and it is also very difficult to connect the broken belt

Method used

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preparation example Construction

[0033] The application provides a method for preparing a copper strip for flexible connections, comprising the following steps in sequence:

[0034] 1) Smelting and casting: put the new raw material copper and the production recycled copper into the smelting furnace according to a certain ratio for melting, and then cast to obtain an ingot. The ingot includes the following components in mass percentage: the content of P≤0.001 %, the total content of impurity elements ≤ 0.01%, the balance of Cu;

[0035] 2) Hot rolling: the ingot obtained in step 1) is subjected to hot rolling treatment, and the ingot is heated in a walking furnace before hot rolling. The step length is 10min / piece, the heating time is 3.5h-4h, and the temperature of the ingot is guaranteed to be uniform before being released from the furnace. The hot rolling adopts 7 passes of rolling, and the final rolling temperature is controlled at 560°C-580°C to obtain an ingot. The thickness of the billet is 15mm~17mm, ...

Embodiment 1

[0057] Taking C1100 grade, specification: 0.1mm×305m, tolerance +0-0.01mm as an example, the production and processing technology of copper thin strip for flexible connection is described in detail below:

[0058] A preparation method of a red copper strip for soft connection, comprising the following steps carried out in sequence:

[0059] 1) Smelting and casting: put the new raw material copper and the production recycled copper into the smelting furnace according to a certain ratio for melting, and then cast to obtain an ingot. The ingot includes the following components in mass percentage: the content of P≤0.001 %, the total content of impurity elements ≤ 0.01%, the balance of Cu;

[0060] 2) Hot rolling: the ingot obtained in step 1) is subjected to hot rolling treatment, and the ingot is heated in a walking furnace before hot rolling. The step length is 10min / piece, the heating time is 3.5h-4h, and the temperature of the ingot is guaranteed to be uniform before being re...

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Abstract

The invention provides a preparation method for a copper strip for flexible connection. Cover type annealing in a cold-rolling in-process rolling process and a cold-rolling on-bottom rolling process in conventional copper strip production is changed into gas cushion type continuous annealing furnace annealing, gas cushion type continuous annealing furnace annealing in a cold-rolled finished product rolling process in conventional copper strip production is changed into the cover type annealing, and multi-position improvement is performed on the cover type annealing, so that the problem that the conventional copper strip is easily broken by pulling in the gas cushion type continuous annealing furnace is solved, and the problem that severe bonding is easily generated between layers of the conventional copper strip after cover type furnace annealing is also solved. The annealing process is improved while performances of a finished product copper strip are not affected, so that the performances of the produced finished product copper strip completely reach standards, and standards and needs of a client are met.

Description

technical field [0001] The invention relates to the technical field of copper material processing, in particular to a preparation method of a red copper strip for soft connection. Background technique [0002] With the rise of micro-electromechanical systems and the electronics industry, the development of copper strip processing technology has been greatly promoted. With the rapid development of electronic products in the direction of high precision, the requirements for copper strips are increasing day by day. Mainly used For radiators, soft connections, car belts, etc. For the annealing problem of copper thin strip, the commonly used annealing equipment includes bell furnace and air cushion continuous annealing furnace. The copper thin strip is annealed in bell furnace Severe bonding between the rear layers is easy to occur, and when annealed in an air-cushion continuous annealing furnace, due to the thin thickness of the copper thin strip, it is easy to produce a broken...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/02C22F1/08C22F1/02C21D1/26C21D9/56C21D9/663C21D1/70C23G3/02C23C22/73B21B1/22B21B45/02B21B37/16B21B37/74B23C3/13B23P15/00
CPCB21B1/22B21B37/16B21B37/74B21B45/0269B21B2001/221B21B2001/225B23C3/13B23P15/00C21D1/26C21D1/70C21D9/56C21D9/663C22C1/02C22C9/00C22F1/02C22F1/08C23C22/73C23G3/02Y02P10/20
Inventor 王晓腾田原晨李洪岩姜业欣刘晨亮田英明郑朋艳朱清涛
Owner 中色正锐(山东)铜业有限公司
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