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Preparation method of ESH-state C19400 copper alloy strips

A strip and state technology, applied in the direction of metal rolling, manufacturing tools, heat treatment equipment, etc., can solve the problems of reduced uniformity of composition and difficult processing

Inactive Publication Date: 2019-08-27
TAIYUAN JIN XI CHUNLEI COPPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because Fe and Cu are immiscible, C194 is difficult to process. During the casting process and hot rolling process, as the temperature decreases, Fe will precipitate and cause the uniformity of the composition to decrease.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) Alloy melting: Fe content 2.2%, P content 0.04%, Zn content 0.1%, Ni content 0.01%, Cu balance, melting temperature 1180℃-1200℃, heat preservation 40min.

[0015] (2) Solution treatment: the solution temperature after hot rolling is 780°C, the solution time is 50s, and the temperature after quenching is 150°C.

[0016] (3) Aging treatment: primary aging treatment temperature 550°C, heat preservation 5h, secondary aging treatment temperature 400°C, heat preservation 5h.

[0017] (4) Finished product rolling: The range of finished product processing rate is 35%, the finished strip is HV155, and the tensile strength is 560MPa.

Embodiment 2

[0019] (1) Alloy melting: Fe content 2.5%, P content 0.04%, Zn content 0.1%, Ni content 0.01%, Co content 0.01%, Cu balance, melting temperature 1180°C-1200°C, heat preservation 40min.

[0020] (2) Solution treatment: the solution temperature after hot rolling is 780°C, the solution time is 50s, and the temperature after quenching is 150°C.

[0021] (3) Aging treatment: primary aging treatment temperature 550°C, heat preservation 5h, secondary aging treatment temperature 400°C, heat preservation 5h.

[0022] (4) Finished product rolling: The range of finished product processing rate is 35%, the finished strip is HV155, and the tensile strength is 560MPa.

Embodiment 3

[0024] (1) Alloy melting: Fe content 2.4%, P content 0.04%, Zn content 0.1%, Cu balance, melting temperature 1180°C-1200°C, heat preservation 40min.

[0025] (2) Solution treatment: the solution temperature after hot rolling is 700°C, the solution time is 50s, and the temperature after quenching is 150°C.

[0026] (3) Aging treatment: primary aging treatment temperature 550°C, heat preservation 5h, secondary aging treatment temperature 400°C, heat preservation 5h.

[0027] (4) Finished product rolling: the range of finished product processing rate is 40%, the finished strip is HV155, and the tensile strength is 560MPa.

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Abstract

The invention relates to a modifying method of C 19400 copper alloy strips, in particular to a preparation method of ESH-state C19400 copper alloy strips. In the method, alloys are smelted as follows:microelements are fed on the basis of the contents of Cu, Fe and P elements meeting the national standard, and are one or combinations of different types of Si, Co, Sn, Zn, Ni and Mg; the total content of the microelements is controlled to be not more than 0.2%; the smelting temperature is 1150-1300 DEG C; and the insulation time is not shorter than 20 min; solid-solution treatment: the solid-solution temperature is controlled within 600-900 DEG C; the solid-solution time is not shorter than 30 s; and the temperature is not higher than 200 DEG C after quenching; aging: a graded aging mode isadopted; the first-grade and second-grade aging temperatures are controlled in a range of 400-600 DEG C; and the insulation time is 2 min to 10 h; and cold rolling of finished products: the finished product machining rate is in a range of 10-60%. The performance indexes of the C 19400 copper alloy strips are improved; the ESH-state requirements are met; the HV reaches above 150; and the tensile strength reaches 550 MPa to meet special function requirements.

Description

technical field [0001] The invention relates to a modification method of a C19400 copper alloy strip, in particular to a preparation method of a C19400 copper alloy strip in an ESH state. Background technique [0002] C19400 series Cu-Fe-P alloy is a medium-strength and medium-conductivity alloy with excellent electrical conductivity, thermal conductivity, stress relaxation resistance and machinability. It is widely used in the electronics and electrical industries, and is currently the most widely used copper alloy strip. However, the HV of C19400 copper alloy strip is generally 125-145, and it is difficult to reach more than 150. In order to improve the comprehensive index of C19400 strip, further research on the modification of C19400 alloy material is needed to meet the functional requirements of special products. [0003] The conventional process flow of C194 is: melting - casting - walking furnace heating - hot rolling - double-sided milling - cold rolling - annealing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C9/00C22F1/08C21D9/52B21B3/00
CPCB21B3/00B21B2003/005C21D9/52C22C1/02C22C9/00C22F1/08
Inventor 李辉张斌王满丰苏鹏续致恒
Owner TAIYUAN JIN XI CHUNLEI COPPER CO LTD
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