Production process of semi-hard soft copper belts

A production process, soft copper strip technology, applied in the field of semi-hard soft copper strip production technology, can solve the problems of copper strip annealing is not soft, copper strip hard, different grain size, etc., to improve the strip shape Quality, meet the requirements of use, and the effect of uniform performance

Active Publication Date: 2012-10-03
ANHUI ZHONGYUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because low-temperature annealing is used to control product performance, that is, the annealing temperature is reduced, which is prone to insufficient recrystallization of the copper strip, resulting in hard copper strip after annealing, that is, the copper strip is not soft after annealing
At the same time, the lower temperature will also lead to greater differences in the degree of crystallization inside and outside the coil, resulting in uneven grain sizes and uneven physical properties.

Method used

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  • Production process of semi-hard soft copper belts
  • Production process of semi-hard soft copper belts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A production process of semi-hard and soft copper strip, including rough rolling process→annealing process→intermediate rolling process→annealing process→finish rolling process→normal annealing process→cleaning process→bending and straightening process→slitting process→packing process ;

[0032] Specifically:

[0033] (1) Rough rolling process:

[0034] Roll the strip with a four-high reversing rolling mill. The rolling schedule is 6 passes, the processing rate of each pass is 20%~40%, and the rolling force is controlled at 300t;

[0035] (2) Annealing process:

[0036] Anneal the strip treated in (1) in a bell-type furnace. The temperature of the outer cover of the bell-type furnace is controlled at 510°C, the temperature of the inner cover is controlled at 390°C, the heating time is controlled at 3h, the holding time is 5h, and the furnace temperature is controlled at at 100°C;

[0037] (3) Intermediate rolling process:

[0038] The strip treated in (2) is rolled...

Embodiment 2

[0057] A production process of semi-hard and soft copper strip, including rough rolling process→annealing process→intermediate rolling process→annealing process→finish rolling process→normal annealing process→cleaning process→bending and straightening process→slitting process→packing process ;

[0058] Specifically:

[0059] (1) Rough rolling process:

[0060] Roll the strip with a four-roll reversing rolling mill. The rolling schedule is 5 passes, the processing rate of each pass is 20%~40%, and the rolling force of each pass is controlled to 300t;

[0061] (2) Annealing process:

[0062] The strip treated in (1) is annealed in a bell-type furnace. The temperature of the outer cover of the bell-type furnace is controlled at 540°C, the temperature of the inner cover is controlled at 420°C, the heating time is controlled at 6h, the holding time is 8h, and the furnace temperature is controlled at 100°C;

[0063] (3) Intermediate rolling process:

[0064] Roll the strip treate...

Embodiment 3

[0081] A production process of semi-hard and soft copper strip, including rough rolling process→annealing process→intermediate rolling process→annealing process→finish rolling process→normal annealing process→cleaning process→bending and straightening process→slitting process→packing process ;

[0082] Specifically:

[0083] (1) Rough rolling process:

[0084] Roll the strip with a four-high reversing rolling mill. The rolling schedule is 6 passes, the processing rate of each pass is 20%~34%, and the rolling force is controlled at 290t;

[0085] (2) Annealing process:

[0086] The strip treated in (1) is annealed in a bell-type furnace. The outer cover temperature of the bell-type furnace is controlled at 530°C, the inner cover temperature is controlled at 410°C, the heating time is controlled at 5h, the holding time is 7h, and the furnace temperature is controlled 90°C;

[0087] (3) Intermediate rolling process:

[0088] The strip treated in (2) is rolled with a four-hig...

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Abstract

The invention discloses a production process of semi-hard soft copper belts. The process comprises a coarse rolling work procedure, an annealing work procedure, a middle rolling work procedure, an annealing work procedure, a fine rolling work procedure, a normal annealing work procedure, a cleaning work procedure, a bending pulling straightening work procedure, a cutting work procedure and a packing work procedure. Compared with the prior art, the production process has the advantages that the normal annealing is adopted. Compared with the low-temperature annealing process, the production process has the advantages that soft copper belt products can be obtained, in addition, the bending pulling straightening work procedure is added, the bending pulling straightening is mainly used for improving the belt form quality of hard belt materials, the process is equivalent to once rolling at an ultralow processing rate, and the belt materials can generate certain plastic deformation after the bending pulling straightening, so the products are processed into the semi-hard soft state from the soft-state processing, the product performance regulation is reached through controlling the elongation rate and the tension, the obtained copper belt products have uniform performance, in addition, the belt form quality of products is greatly improved, the product grade is improved, and the use requirements of customers are met.

Description

technical field [0001] The invention relates to a production process of a semi-hard and soft copper strip. Background technique [0002] There are two control methods for the finished state of copper plate and strip: the soft state is realized by softening annealing; the hard state is controlled by finished product rolling. The greater the rolling processing rate, the harder the finished product. And "Y4" means "1 / 4" hard state, and the copper strip is in a semi-hard to soft state. At present, it is difficult to realize the rolling of finished copper strips in this state, and the processing rate is too small. Usually in production, low-temperature annealing (lower than normal softening annealing temperature) is adopted to control the final properties of semi-hard and soft copper strips. The production process is generally: rough rolling→annealing→intermediate rolling→annealing→finish rolling → Low-temperature annealing → Cleaning → Slitting → Packing and storage. The low-te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/22B21B15/00
Inventor 张俊吴平陶俊兵吴小兵
Owner ANHUI ZHONGYUAN NEW MATERIALS CO LTD
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