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A kind of production method of special-shaped copper alloy strip

A technology for copper alloy strips and production methods, applied in furnace types, furnaces, heat treatment equipment and other directions, can solve problems such as poor mechanical properties, poor surface quality, long process flow, etc., to ensure dimensional accuracy, eliminate plate shape difference, size high precision effect

Active Publication Date: 2021-06-18
浙江力博实业股份有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages: the performance and surface quality of the cast blank are difficult to meet the requirements of subsequent processing
Disadvantages: low utilization rate of the strip, low yield, low density, poor mechanical properties, poor surface quality
Disadvantages: long process flow and low production efficiency

Method used

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  • A kind of production method of special-shaped copper alloy strip

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Embodiment Construction

[0041] The present invention will be further described below in combination with specific embodiments.

[0042] (1) Upward continuous casting

[0043] A power frequency smelting device is used for upward continuous casting of copper rods. The smelting device includes a melting furnace, a holding furnace, a traction device, and a coiling device.

[0044] The traction device includes crystallizer, graphite mold, sheath and traction motor.

[0045] The graphite mold is installed at the bottom of the crystallizer, and the joint between the graphite mold and the bottom of the crystallizer is plugged with asbestos thread and coated with graphite latex to prevent copper from seeping into the air.

[0046] The depth of the graphite mold inserted into the copper liquid is 50 mm, and the temperature difference between the inlet and outlet of the crystallizer cooling water is 15°C. The melting furnace temperature is 1205°C, the holding furnace temperature is 1155°C, the melting furnace...

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Abstract

The invention relates to a production method of a special-shaped copper alloy strip, which comprises the following steps: upward continuous casting, continuous extrusion, one-pass rolling, one-pass drawing, and annealing; the crystal grains of the special-shaped copper alloy strip prepared by the method The size is 0.007‑0.015mm, the conductivity is greater than 97% IACS, the tensile strength is greater than 250MPa, and the elongation is greater than 55%.

Description

technical field [0001] The invention relates to a nonferrous metal processing method, in particular to a production method of a special-shaped copper alloy strip. Background technique [0002] Special-shaped copper strips are mainly used in the manufacture of high-precision lead frames and new energy vehicles. According to their use characteristics, the main requirements are as follows: high electrical and thermal conductivity, and good strength, hardness, softening resistance, and electroplating properties. , Brazing and plastic sealing performance. [0003] The traditional production processes of special-shaped copper strip mainly include rolling method, milling method, forging method and so on. [0004] Rolling method: Represented by Japanese companies, the corresponding special-shaped copper strip blanks are rolled out through rolls, and then finished products are rolled out with shaped rolls. Its disadvantages: the performance and surface quality of the cast blank are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/02C22C9/00B22D11/14C22F1/08C21D9/52
CPCB21C37/02B22D11/145C21D9/52C22C9/00C22F1/08
Inventor 骆越峰姚幼甫徐高磊陈国权宋艳涛金月明秦晓宝吴建良张培鑫
Owner 浙江力博实业股份有限公司
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