Thermomechanical treatment strengthening process of cu-ni-be alloy

A thermomechanical treatment, cu-ni-be technology, applied in the strengthening process of high-conductivity and high-strength copper alloys, can solve the problems of long process, complicated process, and increased production costs, so as to simplify the process steps and strengthen the process , cost-saving effect

Active Publication Date: 2019-03-19
JIANGSU UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Conventional Cu-Ni-Be alloy products, the production process is ingot forging + solid solution + water cooling + cold deformation + aging, the process is long, the metallographic diagram of the alloy after solution aging treatment is shown in the attached figure 1 Shown; and in the production process, the production cost of the product is also increased due to the complicated process flow

Method used

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  • Thermomechanical treatment strengthening process of cu-ni-be alloy
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  • Thermomechanical treatment strengthening process of cu-ni-be alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A Cu-Ni-Be alloy thermomechanical treatment strengthening process specifically comprises the following steps:

[0034] Step 100: heating the Cu-Ni-Be alloy ingot to 960-980°C at a heating rate of 10°C / min, and then keeping the temperature for 60-180min;

[0035] Step 200: Perform 30-60% hot extrusion on the cast ingot processed in step 100 at a speed of 0.05-1 m / s, and then water-cool the billet after hot extrusion. The water temperature does not exceed 30°C;

[0036] Step 300: Perform aging treatment at 470° C. for 3 hours on the billet treated in step 200, and then air-cool.

Embodiment 2

[0038] A Cu-Ni-Be alloy thermomechanical treatment strengthening process specifically comprises the following steps:

[0039] Step 100: Hot forging the Cu-Ni-Be alloy ingot to form a round or square forging billet, then heating the forging billet to 960-980°C at a heating rate of 10°C / min, and then keeping it warm for 60-180min ;

[0040] Step 200: Perform 30-60% hot extrusion or hot-press forming on the forged billet processed in step 100 at a hot-extrusion speed or hot-press speed of 0.05-1m / s, then water-cool, hot-extrude or hot-press the billet The temperature of the ingot entering water is not less than 950°C, and the cooling water temperature of the circulating water is not more than 30°C;

[0041] Step 300: Perform aging treatment at 470° C. for 3 hours on the billet treated in step 200, and then air-cool.

[0042] In Examples 1 and 2, the raw material Cu-Ni-Be alloy ingot, the composition is Ni 1.9wt%, Be 0.38wt%, impurity is not more than 0.1wt%, balance Cu, Ni is a...

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Abstract

The invention discloses a Cu-Ni-Be alloy thermomechanical treatment strengthening process: heating the Cu-Ni-Be alloy ingot to 960-980°C, keeping it warm for 60-180min; then performing 30-60% hot extrusion forming, The speed of hot extrusion is 0.05~1m/s, and then water cooling. After hot extrusion, the water temperature of the ingot entering the billet is not less than 950°C, and the cooling water temperature of the circulating water is not more than 30°C; finally, the aging treatment is carried out at 470°C×3h, and then air-cooled. The advantages of the present invention are: according to the strengthening basic principle of Cu-Ni-Be alloy products, an integrated treatment process of heating, hot extrusion or hot pressing, water cooling and aging is designed, which promotes the further precipitation of alloy aging precipitation phases, and the precipitation phases The alloy is more fine, uniform and dispersed, and has good comprehensive performance; the invention strengthens the process, simplifies the process steps, saves costs, and at the same time enables the alloy to obtain good comprehensive performance.

Description

technical field [0001] The invention relates to a strengthening process of high-conductivity and high-strength copper alloy, in particular to a strengthening process of Cu-Ni-Be alloy. Background technique [0002] High-strength and high-conductivity copper alloy not only has high strength and good plasticity, but also has excellent electrical conductivity, thermal conductivity, corrosion resistance, non-ferromagnetic, beautiful color, and has a wide range of uses in modern industry. The common types of high-conductivity and high-strength copper alloys mainly include copper alloys for lead frames, copper alloys for electrical contacts, copper alloys for electrified railway contact wires, etc. The strengthening methods generally include alloying and composite materials. [0003] Conventional Cu-Ni-Be alloy products, the production process is ingot forging + solid solution + water cooling + cold deformation + aging, the process is long, the metallographic diagram of the alloy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/06C22F1/08
CPCC22C9/06C22F1/002C22F1/08
Inventor 朱治愿隋毅蔡远飞徐玲利王泽鑫陈洪美
Owner JIANGSU UNIV OF SCI & TECH
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