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A kind of preparation method of highly elastic tin phosphor bronze alloy foil

A technology of tin phosphor bronze and alloy foil, which is applied in the production field of C5210 alloy foil, can solve the problems of unstable electrical conductivity, insufficient normal force, and many punching burrs, so as to reduce the number of annealing times, improve the structure and properties, and improve the elasticity. The effect of modulus

Active Publication Date: 2015-08-05
FUJIAN ZIJIN COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the C5210 alloy foil produced through the above process is used by downstream customers, there are many stamping burrs, insufficient positive force, and poor physical properties, resulting in poor contact and unstable electrical conductivity.

Method used

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  • A kind of preparation method of highly elastic tin phosphor bronze alloy foil
  • A kind of preparation method of highly elastic tin phosphor bronze alloy foil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] To produce foils with C5210 SH specification of 0.15×400mm, melt the prepared materials in the melting furnace, control the temperature of the molten copper in the melting furnace at 1240±10°C, control the P content of the chemical composition at 0.22%, and control the Ni content at 0.01% , the Sn / P ratio is 35, and the balance is copper. Transfer the qualified copper liquid into the holding furnace, and the casting temperature is 1190±10°C. The horizontal continuous casting adopts the pull-stop-reverse process, the casting speed is controlled at 165mm / min, and the billet outlet temperature is 300-360°C. The thickness of the slab is controlled at 16mm, the width is 430mm, and the length is 100m.

[0025] Homogenize the produced slab, anneal at 680°C, and hold for 12 hours. After annealing, the slab is face milled. The upper and lower face milling amounts are 0.75 / 0.85mm respectively, and the total side milling amount is 2mm. Roll the milled blank to 2.5mm, transfer to...

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Abstract

The invention relates to a production technology of high-elasticity Sn-P bronze alloy foil which is used for electronic, electrical and mechanical industries and has high normal force, high elasticity and low lug manufacturing rate. The contents of P and Ni and a Sn / P ratio in the alloy component are formulated, and a produced casting blank is evenly annealed after being subjected to additional side milling; then, the casting blank is subjected to rough rolling and cogged to 1.0-2.5mm; after trimming, the casting blank is annealed and rolled to 0.2-0.4mm and is annealed in an air cushion furnace, wherein the annealing technology is as follows: the temperature is 710-750DEG C, the speed is 30-53m / min, the revolving speed of a heating fan is 600-1100r / min, and the revolving speed of a cooling fan is 300-600r / min; a strip is subjected to finish rolling to the finished product with the thickness of 0.04-0.15mm; a coiled material after finish rolling is subjected to stress relieving annealing in an immersion bell, wherein the annealing temperature is controlled to 190-230DEG C, and the temperature keeping time is 3-6 hours; and the obtained coiled material is packaged and put in storage after being subjected to surface cleaning and passivation, bent, straightened and slit. In the technology, the ingredient control, processing rate and the annealing technology are matched to ensure that the produced foil has the characteristics of high normal force, high elasticity and low lug manufacturing rate.

Description

technical field [0001] The invention relates to a manufacturing method of a high-elastic tin-phosphorus bronze alloy foil material used in electronics, electrical and mechanical industries, and particularly belongs to the technical field of a production method of a C5210 alloy foil material. Background technique [0002] Tin bronze has the advantages of high elasticity, wear resistance and antimagnetism, good corrosion resistance and easy welding, and is widely used in the electronic information industry. In recent years, with the development of my country's electronic information industry technology, various electronic information devices have developed in the direction of miniaturization and long life. Due to the sharp increase in the integration of components and the speed of signal transmission, the basic components used in electronic product connectors tend to be more and more Thin, small, integrated development, which has higher and higher requirements for tin bronze pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B21B3/00C22C9/02C21D1/26C22F1/08B23C3/13
Inventor 罗仁昆王矿金
Owner FUJIAN ZIJIN COPPER
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