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Air cushion type continuous annealing process

An air cushion annealing furnace and annealing process technology, which is applied in the field of copper strip annealing processing, can solve problems such as waiting time, and achieve the effect of solving waiting time

Inactive Publication Date: 2020-03-31
中铜华中铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the present invention is to provide an air cushion type continuous annealing process to solve the problem of waiting time in the heating and cooling process

Method used

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Embodiment Construction

[0012] The air cushion type continuous annealing process of the present embodiment comprises steps:

[0013] Select a copper strip with a processing rate of 40% and a hardness of EH, and put the copper strip into an air-cushion annealing furnace for heating and cooling operations, and the temperature range is 450-700°C;

[0014] Adjust the annealing speed every 50°C during the heating and cooling process;

[0015] While heating and cooling, the copper strip is rolled to complete the annealing process.

[0016] The air-cushion type continuous annealing process of the present invention, by adjusting the strip annealing speed 0-10m / min to achieve the purpose of the annealing performance of the entire coil of the strip tending to the temperature when the copper strip is cooled, thereby solving the problem of waiting time in the heating and cooling process; through The processing characteristics of annealed materials, select materials that are complicated in subsequent processing ...

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Abstract

The invention relates to the technical field of copper strip annealing processing, in particular to an air cushion type continuous annealing process. The process comprises the following steps: selecting a red copper strip with the processing rate of 40% and the hardness of EH, and placing the red copper strip into an air cushion type annealing furnace for heating and cooling in the temperature interval of 450-700 DEG C; adjusting the annealing speed once every 50 DEG C in the heating and cooling process; and rolling the red copper strip while heating and cooling to finish annealing. The annealing performance of the whole roll of the strip tends to temperature by adjusting the annealing speed of the strip, and the problem of waiting in the heating and cooling process is solved; the materialprocessing characteristics of annealing are used, so that materials which are complex in subsequent machining or need a large machining rate (the large machining rate causes that the grain structuresof the materials are completely broken or tend to be the same) are annealed and produced; and material performance change caused by annealing temperature rising and falling are eliminated by machining, and subsequently-produced strip finished products are hard-state or ultra-hard-state materials.

Description

technical field [0001] The invention relates to the technical field of copper strip annealing processing, in particular to an air cushion type continuous annealing process. Background technique [0002] Annealing is a metal heat treatment process, which refers to slowly heating the metal to a certain temperature, keeping it for a sufficient time, and then cooling it at an appropriate speed. The purpose is to reduce hardness, improve machinability; reduce residual stress, stabilize size, reduce deformation and crack tendency; refine grain, adjust structure, and eliminate structure defects. To be precise, annealing is a heat treatment process for materials, including metal materials and non-metal materials. Moreover, the purpose of annealing new materials is similar to that of traditional metal annealing. In the existing air-cushion annealing furnace process, when the strips need to be annealed at different temperatures, the temperature needs to be raised and lowered to swit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/08C22F1/02
CPCC22F1/02C22F1/08
Inventor 张武
Owner 中铜华中铜业有限公司
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